Backend Engineering

Backend Developer (Python)

Developing and maintaining server-side logic, APIs, and microservices in Python

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75 skills

362 requirements

137 mandatory

14 domains

Awareness 73 Working 120 Advanced 139 Expert 30

Level:

All domains Programming Fundamentals 9 Backend Development 8 Frontend Development 1 Database Management 8 API & Integration 9 Cloud & Infrastructure 6 DevOps & CI/CD 2 Testing & QA 4 Security 4 AI-Assisted Development 4 Architecture & System Design 7 Observability & Monitoring 6 Version Control & Collaboration 3 Performance Engineering 4

Profiles: Awareness Working Advanced Expert -- Click level to expand, click requirement for details and voting

Programming Fundamentals

9 skills · 45 requirements

Skill	Junior	Middle	Senior	Lead	Principal
Algorithms & Data Structures
Algorithms & Complexity	Awareness	Working	Working	Advanced	Advanced
Data Structures	Awareness	Working	Working	Advanced	Advanced
OOP & Design Patterns
OOP & SOLID Principles	Awareness	Working	Advanced	Advanced	Expert
Design Patterns	Awareness	Working	Advanced	Advanced	Expert
Concurrency & Parallelism
Multithreading	Awareness	Working	Working	Advanced	Advanced
Async Programming	Awareness	Working	Advanced	Advanced	Expert
Clean Code & Refactoring
Code Quality & Refactoring	Awareness	Working	Advanced	Advanced	Expert
Type Systems
Type Safety & Type Systems	Awareness	Working	Working	Advanced	Advanced
Memory Management
Memory Management	Awareness	Working	Working	Advanced	Advanced

Backend Development

8 skills · 40 requirements

Skill	Junior	Middle	Senior	Lead	Principal
Web Frameworks
Python Web Frameworks	Awareness	Working	Advanced	Advanced	Expert
Message Queues & Event Streaming
Apache Kafka	Awareness	Working	Advanced	Advanced	Expert
RabbitMQ	Awareness	Working	Working	Advanced	Advanced
Message Broker Patterns	Awareness	Working	Working	Advanced	Advanced
Caching
Redis	Awareness	Working	Advanced	Advanced	Expert
Caching Strategies	Awareness	Working	Advanced	Advanced	Expert
Background Jobs & Task Queues
Task Queues	Awareness	Working	Advanced	Advanced	Expert
Search Engines
Elasticsearch / OpenSearch	Awareness	Working	Working	Advanced	Advanced

Frontend Development

1 skills · 5 requirements

Skill	Junior	Middle	Senior	Lead	Principal
State Management
Data Fetching	Awareness	Working	Working	Advanced	Advanced

Database Management

8 skills · 40 requirements

Skill	Junior	Middle	Senior	Lead	Principal
Relational Databases
PostgreSQL	Awareness	Working	Advanced	Advanced	Expert
NoSQL Databases
MongoDB	Awareness	Working	Working	Advanced	Advanced
Database Optimization
Database Indexing	Awareness	Working	Advanced	Advanced	Expert
Query Optimization	Awareness	Working	Advanced	Advanced	Expert
Connection Pooling	Awareness	Working	Working	Advanced	Advanced
Database Sharding	Awareness	Working	Working	Advanced	Advanced
Data Modeling
Data Modeling & Schema Design	Awareness	Working	Advanced	Advanced	Expert
Database Migrations	Awareness	Working	Advanced	Advanced	Expert

API & Integration

9 skills · 45 requirements

Skill	Junior	Middle	Senior	Lead	Principal
REST API
REST API Design	Awareness	Working	Advanced	Advanced	Expert
GraphQL
GraphQL Design	Awareness	Working	Working	Advanced	Advanced
API Protocols
WebSocket API Design	Awareness	Working	Working	Advanced	Advanced
gRPC & Protocol Buffers	Awareness	Working	Working	Advanced	Advanced
gRPC
gRPC & Protocol Buffers	Awareness	Working	Working	Advanced	Advanced
API Management
API Versioning Strategies	Awareness	Working	Advanced	Advanced	Expert
API Documentation	Awareness	Working	Advanced	Advanced	Expert
API Testing	Awareness	Working	Advanced	Advanced	Expert
Rate Limiting & Throttling	Awareness	Working	Working	Advanced	Advanced

Cloud & Infrastructure

6 skills · 27 requirements

Skill	Junior	Middle	Senior	Lead	Principal
Containerization
Docker	Awareness	Working	Advanced	Advanced	Expert
Container Security
Container Security Scanning	Awareness	Working	Working	Advanced	Advanced
Kubernetes & Orchestration
Kubernetes Core	Awareness	Working	Advanced	Advanced	Expert
Infrastructure as Code
Terraform	Awareness	Working	Working	Advanced	—
Cloud Providers
AWS	Awareness	Working	Working	Advanced	Advanced
Networking
Network Fundamentals	Awareness	Working	Advanced	—	—

DevOps & CI/CD

2 skills · 8 requirements

Skill	Junior	Middle	Senior	Lead	Principal
CI/CD
GitHub Actions / GitLab CI	Awareness	Working	Advanced	Advanced	Expert
Release Management
Feature Flags	Awareness	Working	Working	—	—

Testing & QA

4 skills · 20 requirements

Skill	Junior	Middle	Senior	Lead	Principal
Test Strategy
TDD & BDD	Awareness	Working	Working	Advanced	Advanced
Unit Testing
Unit Testing	Awareness	Working	Advanced	Advanced	Expert
Integration Testing
Integration Testing	Awareness	Working	Advanced	Advanced	Expert
E2E Testing
E2E Testing	Awareness	Working	Working	Advanced	Advanced

Security

4 skills · 20 requirements

Skill	Junior	Middle	Senior	Lead	Principal
Application Security
OWASP & Application Security	Awareness	Working	Advanced	Advanced	Expert
Secure Coding Practices	Awareness	Working	Advanced	Advanced	Expert
Infrastructure Security
Secrets Management	Awareness	Working	Working	Advanced	Advanced
Authentication & Authorization
JWT / OAuth2 / OIDC	Awareness	Working	Advanced	Advanced	Expert

AI-Assisted Development

4 skills · 18 requirements

Skill	Junior	Middle	Senior	Lead	Principal
AI Coding Assistants
GitHub Copilot	Awareness	Working	Working	Advanced	Advanced
Cursor IDE	Awareness	Working	Working	Advanced	—
ChatGPT / Claude	Awareness	Working	Working	Advanced	Advanced
Prompt Engineering
Prompt Engineering for Code	Awareness	Working	Working	Advanced	—

Architecture & System Design

7 skills · 31 requirements

Skill	Junior	Middle	Senior	Lead	Principal
System Design
System Design Fundamentals	Awareness	Working	Working	Advanced	Advanced
High Load Architecture	Awareness	Working	Working	Advanced	Advanced
Microservices Patterns
Microservices Decomposition	—	Working	Working	Advanced	—
Architecture Patterns
Clean Architecture	Awareness	Working	Working	Advanced	Advanced
Event-Driven Architecture
CQRS	Awareness	Working	Working	Advanced	Advanced
Event-Driven Architecture	Awareness	Working	Working	Advanced	Advanced
Domain-Driven Design
DDD Tactical Patterns	—	Working	Working	Advanced	—

Observability & Monitoring

6 skills · 28 requirements

Skill	Junior	Middle	Senior	Lead	Principal
Logging
Structured Logging	Awareness	Working	Advanced	Advanced	Expert
ELK Stack	Awareness	Working	Working	Advanced	Advanced
Metrics & Monitoring
Prometheus & Grafana	Awareness	Working	Working	Advanced	Expert
Distributed Tracing
OpenTelemetry	Awareness	Working	Working	Advanced	Advanced
Alerting & On-Call
SLI / SLO / SLA	Awareness	Working	Working	—	—
Incident Management
On-Call Management	Awareness	Working	Working	Advanced	Advanced

Version Control & Collaboration

3 skills · 15 requirements

Skill	Junior	Middle	Senior	Lead	Principal
Git & Workflows
Git Advanced	Awareness	Working	Advanced	Advanced	Expert
Code Review
Code Review	Awareness	Working	Advanced	Advanced	Expert
Collaboration Tools
Documentation as Code	Awareness	Working	Working	Advanced	Advanced

Performance Engineering

4 skills · 20 requirements

Skill	Junior	Middle	Senior	Lead	Principal
Profiling
CPU Profiling	Awareness	Working	Working	Advanced	Advanced
Memory Profiling	Awareness	Working	Working	Advanced	Advanced
Optimization
Latency Optimization	Awareness	Working	Working	Advanced	Advanced
Benchmarking
Performance Budgets	Awareness	Working	Working	Advanced	Advanced

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