These skills do not affect the main grade but show the breadth of your profile.
AI Coding Assistants
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Familiar with Cursor IDE and its AI capabilities for accelerating language tooling development. Uses built-in AI features for writing parsers and code analyzers.
Effectively uses Cursor IDE for developing and debugging language servers. Applies AI generation for creating tests, refactoring AST handlers, and documenting APIs.
Integrates language tool development with Cursor IDE capabilities at an advanced level. Creates custom configurations for compiler debugging and performance analysis.
Defines best practices for Cursor IDE usage for teams developing language tools. Establishes recommendations for AI-assisted compiler and analyzer development.
Algorithms & Data Structures
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Understands the fundamentals of Graph Algorithms at a basic level. Applies simple concepts in work tasks using TypeScript/Rust. Follows recommendations from senior developers when solving problems.
Independently applies graph algorithms (DFS, BFS, topological sort) for AST traversal, dependency resolution, and symbol table construction. Understands trade-offs between adjacency list and matrix representations for compiler IR. Explains graph coloring for register allocation and cycle detection in code reviews.
Designs IR optimization passes using dominance frontiers, control flow graphs, and SSA construction algorithms. Architects incremental re-parsing with graph-diffing for IDE responsiveness. Mentors developers on advanced graph algorithms for type inference, escape analysis, and inter-procedural data flow.
Defines standards for applying Graph Algorithms at the team/product level. Conducts architectural reviews. Establishes best practices and training materials for the entire team.
Application Security
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Familiar with key OWASP Top 10 vulnerabilities and understands their relevance to language tools. Applies basic security checks when processing user code with parsers.
Integrates OWASP checks into language tools for identifying vulnerabilities in analyzed code. Implements secure input handling in LSP servers and linters.
Designs static security analysis modules based on OWASP for language tools. Develops vulnerability detection rules integrated into IDEs through language servers.
Defines OWASP check integration strategy for all organizational language tools. Coordinates security linter development and ensures coverage of all vulnerability categories.
Applies basic secure coding practices when developing language tools. Understands risks of processing untrusted code and validates parser input data.
Implements protection against injections and overflows when processing arbitrary code in language tools. Applies the principle of least privilege for plugins and extensions.
Designs security models for language tools processing untrusted code. Implements sandboxes for executing macros and user analyzers with process isolation.
Defines secure development standards for all language tools. Conducts threat modeling and ensures security by design implementation across all toolchain components.
Benchmarking
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Understands fundamentals of benchmarking methodology for language tooling components. Uses micro-benchmark frameworks to measure compiler pass performance and parsing throughput. Follows team guidelines for setting up reproducible benchmark environments and avoiding common measurement pitfalls.
Independently designs benchmark suites for compiler and language tool performance evaluation. Implements regression detection benchmarks integrated into CI pipelines. Applies statistical methods to distinguish real performance changes from measurement noise in compiler optimization passes.
Architects benchmarking infrastructure for language tooling projects with automated regression tracking across releases. Designs representative benchmark corpora covering diverse codebases and compilation scenarios. Implements performance budgets for compiler passes and IDE responsiveness. Mentors team on measurement methodology.
Defines Benchmarking Tools strategy at the team/product level. Establishes standards and best practices. Conducts reviews.
Caching
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Understands basics of Redis for caching language server analysis results and compilation artifacts. Reads cached symbol tables and AST data for improved IDE responsiveness. Follows team guidelines for cache invalidation when source files change.
Designs caching strategy with Redis for accelerating language tools. Caches AST trees, type analysis results, and dependencies with TTL and invalidation configuration.
Develops distributed caching system with Redis for language tools. Designs invalidation on code changes and ensures cache consistency in cluster environments.
Defines caching strategy for the entire language tooling platform. Designs multi-level cache with Redis for optimizing large codebase analysis performance.
CI/CD
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Understands basic GitHub Actions for language tooling: running compiler build and test pipelines, reading CI logs for regression test failures, understanding workflow triggers for language ecosystem package builds. Follows team conventions for compiler CI automation.
Independently creates GitHub Actions workflows for language tooling: configures multi-platform compiler build matrices, implements regression test suites and benchmark tracking, automates package publishing for language ecosystem releases. Manages compiler CI/CD configurations.
Designs CI/CD architecture for language tooling: optimizes multi-platform compiler build pipelines, implements progressive release strategies for language ecosystem packages, architects benchmark regression detection in CI. Mentors team on compiler CI/CD best practices.
Defines DevOps strategy for language tooling teams: establishes CI/CD standards for compiler release management, implements platform engineering approaches for language ecosystem builds, drives adoption of automated regression and benchmark testing.
Clean Code & Refactoring
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Understands the fundamentals of Code Quality & Refactoring at a basic level. Applies simple concepts in work tasks using TypeScript/Rust. Follows recommendations from senior developers when solving problems.
Independently applies code quality practices in compiler and language tooling development. Writes clean AST manipulation code with proper visitor patterns and error recovery. Understands trade-offs between parser performance and error message quality. Reviews tooling code for semantic correctness and regression test coverage.
Designs code quality standards for compiler and language tooling codebases: AST manipulation clarity, visitor pattern consistency, parser maintainability. Refactors complex code generation pipelines for testability. Establishes review practices for semantic correctness, performance regression prevention, and cross-platform compatibility.
Defines code quality standards for language tooling team: AST code conventions, parser maintainability guidelines, code generation quality criteria. Conducts architectural reviews of compiler pipeline changes. Establishes quality gates for semantic correctness and performance regression.
Cloud Providers
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Knows basic AWS services and can deploy language servers in the cloud. Uses S3 for storing compiler build artifacts and Lambda for simple code analysis tasks.
Deploys language tools on AWS using ECS/EKS, configures autoscaling for handling peak loads. Optimizes cloud resource costs for CI/CD pipelines.
Designs cloud architecture for distributed language tool execution. Uses Step Functions for orchestrating complex code analysis pipelines and CodeBuild for builds.
Defines cloud strategy for the language tooling platform. Designs multi-regional infrastructure with optimal balance of performance, cost, and fault tolerance.
Collaboration Tools
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Understands docs-as-code principles for language tooling projects: grammar documentation, parser behavior specs, and API references in version-controlled formats. Writes documentation alongside compiler/LSP code changes. Follows team standards for technical documentation.
Implements docs-as-code for language tooling: auto-generated API docs from source, interactive grammar playground documentation, and versioned language specification. Uses documentation generators (TypeDoc, rustdoc, godoc) as part of build pipeline. Maintains changelog automation from commit history.
Designs comprehensive documentation systems for language tools: interactive documentation with embedded code execution, version-aware API references, and migration guides generated from breaking change detection. Implements documentation testing (doctests) as part of CI. Mentors team on documentation architecture.
Defines documentation strategy for language tooling platform: unified documentation portal, multi-version documentation hosting, and contributor documentation standards. Establishes documentation review processes and quality gates. Creates guidelines for interactive examples and playground integration in documentation.
Compiler Theory
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Understands lexer/parser fundamentals: tokenization, grammar rules, and AST construction. Writes simple lexers using regular expressions and modifies existing parser rules for language tooling.
Implements recursive descent and PEG parsers for DSLs. Builds error-recovery mechanisms for partial parsing to support IDE features. Generates syntax-highlighted token streams from lexer output.
Designs incremental parsing architectures (tree-sitter style) for real-time editor feedback. Implements grammar composition for embedded languages and optimizes parser performance for large source files.
Defines compiler architecture. Establishes development standards. Coordinates compiler team.
Learns basics of type inference algorithms such as Hindley-Milner and unification. Reads compiler source code to understand how type checking passes work in practice.
Implements type inference passes and integrates them with IR transformations. Writes comprehensive test suites for type checker correctness including edge cases with generics and variance.
Designs advanced type system features including dependent types, GADTs, and type-level computation. Architects compiler optimization passes that leverage type information for better code generation. Mentors the team on type theory.
Defines compiler architecture. Establishes development standards. Coordinates compiler team.
Concurrency & Parallelism
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Understands the fundamentals of Async Programming at a basic level. Applies simple concepts in work tasks using TypeScript/Rust. Follows recommendations from senior developers when solving problems.
Independently applies async programming in language tools: concurrent compilation passes, async file I/O for source processing, non-blocking LSP request handling. Understands trade-offs between parallel and sequential compilation strategies.
Designs async architectures for language tools: parallel compilation strategies, async LSP server architecture, concurrent file watching and incremental compilation. Mentors team on async patterns for compiler performance optimization.
Defines async programming standards for language tooling team: parallel compilation architecture guidelines, async LSP design reviews, concurrent file processing patterns. Establishes best practices for async patterns in compiler and tooling systems.
Understands the fundamentals of Multithreading at a basic level. Applies simple concepts in work tasks using TypeScript/Rust. Follows recommendations from senior developers when solving problems.
Independently applies multithreading for language tools: parallel compilation passes, concurrent symbol resolution in language servers, thread-safe caching for incremental compilation. Explains concurrency trade-offs for compilation speed vs correctness guarantees.
Has deep expertise in multithreading for compilers: designs parallel compilation architectures for build speed optimization, implements concurrent type checking and code analysis passes, optimizes thread scheduling for incremental compilation. Mentors team on concurrent programming patterns for language tool performance.
Defines multithreading standards for language tooling teams: establishes guidelines for parallel compilation architectures, conducts reviews of concurrent language server designs, creates training materials on thread-safe compiler data structures and caching patterns.
Containerization
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Knows containerization basics and can build simple Docker images for code analysis tools. Understands Dockerfile instructions and can run containers locally for testing language servers.
Creates multi-stage Docker builds for compilers and linters, optimizes image sizes. Configures docker-compose for integration testing of language tools in isolated environments.
Designs containerization strategy for the entire language toolchain with layer caching and minimal size. Implements image security best practices and automated CI/CD builds.
Defines containerization architecture standards for the language tooling development team. Designs reusable base images and versioning strategy for all toolchain components.
Distributed Tracing
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Understands basics of OpenTelemetry for language tooling observability. Follows team guidelines for instrumenting language server and compiler services with OTel SDK. Reads traces to debug LSP request processing latency and compilation pipeline performance bottlenecks.
Implements OpenTelemetry for end-to-end tracing of operations in language tools. Instruments key paths: parsing, AST construction, type analysis, autocompletion.
Designs comprehensive observability strategy for language tools based on OpenTelemetry. Creates custom metrics and traces for deep compiler performance analysis.
Defines telemetry standards for all organizational language tools. Designs a unified observability platform with cross-service trace and metric correlation.
DSL & Interpreters
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Understands DSL grammar specifications and basic parser construction. Writes simple DSL expressions following existing language syntax. Tests DSL programs against expected output under mentorship.
Designs and implements domain-specific languages with custom parsers and semantic analysis. Builds error reporting and IDE integration for DSL tooling. Writes comprehensive test suites covering DSL edge cases and error handling.
Architects DSL ecosystems with composable grammars, type systems, and compilation targets. Designs language server protocols for DSL IDE support. Mentors the team on language design principles and user experience trade-offs.
Defines compiler architecture. Establishes development standards. Coordinates compiler team.
Functional Programming
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Understands the fundamentals of Functional Programming Principles at a basic level. Applies simple concepts in work tasks using TypeScript/Rust. Follows recommendations from senior developers when solving problems.
Applies FP principles when building compiler passes and language tools: pure transformations on ASTs, immutable intermediate representations, and referential transparency in analysis phases. Understands algebraic data types for modeling syntax trees and uses pattern matching for tree traversal.
Architects compiler internals using advanced FP: optimization passes as composable pure transformations, type checkers with monadic constraint solvers, and complex language semantics modeled via GADTs. Mentors team on recursion schemes for AST transformations and catamorphisms for code generation.
Defines standards for applying Functional Programming Principles at the team/product level. Conducts architectural reviews. Establishes best practices and training materials for the entire team.
Understands basic immutability concepts for language tool data structures — immutable syntax trees, read-only type representations, and snapshot-based document models. Follows team patterns for creating new tree nodes during refactoring operations instead of mutating existing AST structures. Recognizes how immutability enables undo/redo functionality and concurrent analysis in language servers.
Independently applies immutability patterns in language tool development including red-green syntax trees, immutable rope data structures for text editing, and persistent type environments for incremental type checking. Writes analysis passes that operate on immutable snapshots enabling safe concurrent diagnostics and code action computation. Understands memory management strategies for immutable tree structures in long-running language server processes.
Designs language tooling architectures leveraging immutability for incremental analysis, concurrent processing, and reliable IDE experiences. Implements advanced patterns including Salsa-style incremental computation frameworks with immutable inputs, persistent syntax tree designs for zero-copy editing, and lock-free concurrent analysis on shared immutable snapshots. Optimizes immutable data structures for responsive IDE performance with efficient structural sharing and lazy evaluation.
Defines immutability standards for language tooling infrastructure across the organization's developer tools portfolio. Establishes guidelines for immutable document models, incremental computation frameworks, and memory management policies for long-running analysis processes. Conducts architecture reviews ensuring immutable designs enable responsive IDE experiences and correct concurrent analysis at scale.
GraphQL
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Understands basics of GraphQL schema design for language service APIs and developer tool integrations. Writes simple queries for code analysis results and symbol information endpoints. Follows team conventions for exposing compiler/analyzer data through GraphQL interfaces.
Designs GraphQL schemas for language tools with efficient resolvers. Implements queries for code navigation, symbol search, and project dependency visualization.
Develops scalable GraphQL APIs for the language tooling platform. Designs federated schemas for integrating multiple analyzers and optimizes N+1 queries.
Defines GraphQL API standards for all organizational language tools. Designs a unified codebase graph model with subscription support and incremental updates.
Integration Testing
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Understands basics of integration testing for language tool components. Writes simple tests verifying parser-to-analyzer data flow and LSP server-client protocol interactions. Follows team testing guidelines for compiler pipeline stage integration validation.
Independently designs integration tests for compiler/analyzer pipeline stages and IDE plugin interactions. Applies contract testing for LSP protocol message boundaries. Integrates syntax tree validation and code action tests into CI/CD.
Designs integration testing strategy for language toolchain components from lexer through code generation. Implements automated testing across parser, type checker, and IDE integration layers. Optimizes test pyramid balancing grammar unit tests with end-to-end compilation integration validation. Mentors team on testing language server protocol compliance and cross-editor compatibility.
Defines integration testing strategy for language toolchain products across multiple target platforms and editor integrations. Establishes quality standards for compiler-IDE integration points including LSP conformance and debug adapter protocol compliance. Implements shift-left testing culture with early validation of grammar specifications and type system soundness.
Kubernetes & Orchestration
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Knows Kubernetes basics and understands how to deploy language servers in a cluster. Works with basic resources: Pod, Deployment, Service for running code analysis tools.
Deploys language tools in Kubernetes with autoscaling and health check configuration. Configures resource limits for parsers and compilers considering memory consumption.
Designs Kubernetes infrastructure for the language tooling platform with operators and CRDs. Implements deployment strategies ensuring zero downtime during compiler updates.
Defines container orchestration strategy for all language tools. Designs multi-cluster solutions with federation and ensures development tool platform reliability.
Logging
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Understands structured logging principles and can add JSON logs to language servers. Uses basic logging levels for diagnosing parser and code analyzer operation.
Designs structured log schema for language tools with AST operation context and request tracing. Configures log correlation between language server components.
Develops unified logging strategy for the entire language tools ecosystem. Implements semantic logging with metadata on parsing and code analysis performance.
Defines logging standards for all language tooling development teams. Designs a centralized log analysis platform with alerting on toolchain operation anomalies.
Memory Management
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Understands the fundamentals of Memory Management at a basic level. Applies simple concepts in work tasks using TypeScript/Rust. Follows recommendations from senior developers when solving problems.
Manages memory for parser/compiler data structures: AST node allocation, intern tables for identifiers, and arena allocators for compilation units. Understands memory implications of recursive descent parsing. Profiles memory usage during large file processing and implements incremental strategies.
Designs memory-efficient compiler/LSP architectures: incremental compilation with selective invalidation, persistent data structures for immutable ASTs, and memory-mapped source files. Implements custom allocators for type-checking passes and code generation. Optimizes IDE responsiveness through lazy evaluation and demand-driven computation. Mentors team on memory profiling for language tools.
Defines memory management standards for language tooling teams. Establishes memory budgets for IDE features, compiler passes, and LSP operations. Conducts architectural reviews of memory-intensive language processing systems. Creates best practices for incremental computation and demand-driven evaluation to minimize memory footprint.
Metrics & Monitoring
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Understands basic Prometheus & Grafana for language tooling: reading compiler/LSP server performance dashboards, understanding build time and memory usage metrics, navigating Grafana panels for language service health. Follows team conventions for monitoring language tool infrastructure.
Configures detailed monitoring of language tools: AST construction performance metrics, autocompletion latency, parser memory usage. Creates informative dashboards.
Designs comprehensive performance monitoring system for the entire language toolchain. Implements SLI/SLO for critical operations: parsing, type analysis, refactoring.
Defines monitoring strategy for all organizational language tools. Designs a unified observability platform with cross-service correlation of compiler and analyzer metrics.
Networking
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Understands basic networking concepts for language server communication — LSP transport protocols, JSON-RPC over TCP/stdio, and debug adapter protocol connectivity. Follows team guidelines for configuring network-based language server deployments and debugging protocol communication issues.
Configures network communication between language tool components. Optimizes LSP communications, implements efficient message serialization and timeout handling.
Designs network architecture for distributed language tools with minimal latency. Implements communication protocols between remote code analysis components.
Defines network architecture for the language tooling platform. Designs solutions for working through proxies, firewalls, and in hybrid environments with fault tolerance.
OOP & Design Patterns
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Understands the fundamentals of Design Patterns at a basic level. Applies simple concepts in work tasks using TypeScript/Rust. Follows recommendations from senior developers when solving problems.
Independently applies design patterns for language tooling: visitor pattern for AST traversal, interpreter pattern for expression evaluation, composite for tree structures, strategy for pluggable compiler passes. Explains pattern trade-offs for extensible compiler architectures.
Has deep expertise in design patterns for compilers: designs extensible compiler architectures with visitor and interpreter patterns, implements plugin systems for compiler passes and code generators, optimizes pattern usage for compilation performance. Mentors team on compiler design patterns for language ecosystem tools.
Defines design pattern standards for language tooling teams: establishes architectural review practices for compiler and tooling patterns, creates guidelines for extensible language tool architectures, conducts training on visitor, interpreter, and composite patterns for compiler development.
Understands the fundamentals of OOP & SOLID Principles at a basic level. Applies simple concepts in work tasks using TypeScript/Rust. Follows recommendations from senior developers when solving problems.
Independently applies OOP/SOLID in compiler/tooling code: proper AST node hierarchies with visitor pattern, interface-based pass design for compilation stages, single responsibility in parser/analyzer/emitter modules. Understands trade-offs between OOP patterns and algebraic data types for language tool design.
Applies OOP/SOLID in compiler architecture: visitor pattern for AST traversal, abstract factory for syntax node creation, strategy pattern for code generation backends. Designs extensible compiler pipelines with clean separation between parsing, semantic analysis, and code generation phases.
Defines OOP/SOLID standards for language tooling team: AST node hierarchy guidelines, compiler pass interface contracts, visitor pattern implementation standards. Conducts reviews of class design decisions in parser, analyzer, and code generation components.
Profiling
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Understands basics of CPU profiling for language tooling. Uses profilers like perf or pprof to identify hot functions in compilers and interpreters. Follows established profiling workflows and reads flame graphs under guidance.
Independently profiles compiler and language runtime performance using perf, pprof, and VTune. Identifies CPU bottlenecks in parsing, type checking, and code generation stages. Understands trade-offs between sampling and instrumentation profiling for tooling workloads.
Designs CPU profiling strategies for complex language toolchains including LSP servers, compilers, and debuggers. Builds custom profiling harnesses for measuring instruction-level performance. Mentors the team on interpreting IPC, cache miss, and branch prediction data from hardware counters.
Defines CPU Profiling strategy at the team/product level. Establishes standards and best practices. Conducts reviews.
Prompt Engineering
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Uses AI to assist with parser and compiler code generation. Formulates prompts with grammar specifications and AST structure context. Understands how to provide technical context for language tooling tasks to AI models.
Creates effective prompts for integrating LLMs into language tools — autocompletion, refactoring, documentation generation. Optimizes context window for quality improvement.
Designs AI functionality for language tools using advanced prompting techniques. Develops prompt chains for complex code analysis and transformation tasks.
Defines AI integration strategy for organizational language tools. Designs frameworks for systematic creation and testing of prompts for various language tasks.
Relational Databases
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Understands basic PostgreSQL for language tooling: storing symbol tables and package registry data, basic queries for dependency resolution, understanding schema design for language server index storage. Follows team conventions for tooling data persistence patterns.
Designs efficient PostgreSQL schemas for storing AST data, code indexes, and analysis results. Optimizes queries for fast symbol search and codebase navigation.
Develops high-performance PostgreSQL storage for language tools using full-text search and JSONB. Designs schemas for incremental code analysis.
Defines PostgreSQL usage strategy for all language tools. Designs scalable data schemas and partitioning strategies for large codebases.
REST API
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Understands basic REST API concepts for language tool services: LSP-over-HTTP patterns, code analysis API endpoints, compilation service request/response formats. Follows team conventions for language server API design.
Independently designs REST APIs for language services: code analysis endpoints, compilation service APIs, code formatting and linting endpoints. Understands best practices for streaming compilation results, source location references in API responses, and IDE integration patterns.
Designs API architecture for language services: code analysis API at scale, compilation-as-a-service endpoints, IDE integration APIs with real-time capabilities. Defines API contracts for language tool ecosystem. Mentors team on API design for developer tooling.
Defines API strategy for language tool ecosystem at product level: language service API standards, IDE integration API governance, compilation service endpoint policies. Conducts API architecture reviews for developer tooling platform.
System Design
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Understands basic system design principles and applies them when developing language tool components. Knows client-server interaction patterns in the LSP context.
Designs modular language servers with clear separation of concerns. Applies design patterns for extensible code analysis systems with plugin support.
Develops architecture for distributed language tools considering scalability and fault tolerance. Designs incremental compilation and analysis result caching systems.
Defines architectural principles for the entire language tooling platform. Designs systems with horizontal scaling support and ensures component consistency.
Test Strategy
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Understands the fundamentals of property-based testing for language tooling. Writes basic property tests for parser round-trips and AST invariants. Follows team conventions for generator construction of syntactic structures.
Independently designs property tests for compiler passes and code transformations. Builds custom generators for complex AST structures. Integrates property-based test suites into CI/CD pipelines to catch semantic regressions.
Designs property-based testing strategy for the entire language toolchain. Implements automated verification of compiler correctness, optimizer invariants, and code generation properties. Mentors the team on effective generator design and shrinking.
Defines property-based testing strategy at the product level for language tooling platforms. Establishes quality standards for compiler and parser verification using formal properties. Drives adoption of specification-driven testing culture across the engineering organization.
Understands TDD fundamentals for language tools: test-first development for parser rules, grammar test cases, and AST transformation verification. Writes basic tests for lexer/parser outputs. Follows team BDD practices for language feature specification testing.
Applies TDD for language tool development: test-driven parser rule implementation, comprehensive grammar test suites with edge cases, and BDD scenarios for language feature specifications. Uses snapshot testing for AST/IR outputs. Implements test fixtures for complex language constructs. Integrates language conformance tests into CI.
Designs testing architecture for language tooling platform: conformance test suites for language specification, fuzz testing for parser robustness, and BDD-driven feature acceptance. Implements golden file testing for code generation and formatting. Creates testing infrastructure for cross-platform language tool validation. Mentors team on test-driven compiler/LSP development.
Defines testing strategy for language tooling platform: conformance testing standards, performance regression testing requirements, and cross-platform validation processes. Establishes BDD practices for language feature specification and acceptance. Drives adoption of test-driven development culture in language tooling teams.
Type Systems
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Understands the fundamentals of Generics & Parametric Polymorphism at a basic level. Applies simple concepts in work tasks using TypeScript/Rust. Follows recommendations from senior developers when solving problems.
Implements generic type resolution in language tooling: builds type parameter substitution maps during type checking, handles generic method inference and constraint solving. Understands generic instantiation strategies (monomorphization vs type erasure) and their impact on tooling — code completion, refactoring, and type display in IDE features.
Designs cross-language generic type system tooling: implements constraint solvers for generic type inference (Hindley-Milner extensions, local type inference), builds incremental type checkers that efficiently handle generic instantiation caching. Architects IDE features for generic code — smart completion with type parameter inference, generic refactoring (extract type parameter, inline type alias), and diagnostic messages that clearly explain constraint violation chains in complex generic contexts.
Defines standards for applying Generics and Parametric Polymorphism at the team/product level. Conducts architectural reviews. Establishes best practices and training materials for the entire team.
Understands the fundamentals of Type Safety & Type Systems at a basic level. Applies simple concepts in work tasks using TypeScript/Rust. Follows recommendations from senior developers when solving problems.
Independently applies type system theory in language tool development — implementing type checkers, designing type inference algorithms, and building type-aware code analysis. Understands trade-offs between structural and nominal typing, soundness vs completeness. Explains type system design decisions to colleagues.
Has deep expertise in type system theory and implementation — designs type inference engines, implements constraint-based type solvers, and builds type-aware refactoring tools. Architects gradual typing systems balancing soundness with adoption ergonomics. Mentors team on formal type theory foundations, decidability trade-offs in type checking, and practical type system design patterns.
Defines type system design standards for language tooling products — establishes type inference algorithm requirements, error reporting quality standards, and type checker performance benchmarks. Conducts architectural reviews ensuring consistent type system implementation across compiler stages and IDE integration layers.
Unit Testing
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Understands basic unit testing for language tools: test cases for parser/lexer output, AST node assertion patterns, simple compiler pass verification. Follows team practices for testing language features with input/output snapshot tests.
Independently writes unit tests for language tools: snapshot tests for parser/compiler output, test cases for error recovery paths, edge case coverage for unicode/encoding/whitespace handling. Integrates compiler tests into CI/CD with regression test suites for language spec compliance.
Designs testing strategy for language tooling: test pyramid for lexer/parser/analyzer/codegen stages, conformance test suites for language spec, fuzzing for parser robustness. Optimizes compiler test execution with incremental test selection. Mentors team on snapshot-based testing and regression prevention.
Defines testing strategy at product level for language tools: conformance test suite standards, parser robustness testing governance, performance regression testing frameworks. Establishes shift-left testing culture with automated quality gates for compiler releases.