Fullstack Developer

Full-stack development: frontend, backend, databases, and deployment

Frontend Engineering Junior Middle Senior Lead / Staff Principal
Full Matrix Career Track PDF
65 skills
5 levels
185 mandatory
320 requirements

Fullstack Developer is a role in the Frontend Engineering family. It has 65 skills across 5 levels (from Junior to Principal). 185 skills are mandatory. Key domains: Programming Fundamentals, Backend Development, Frontend Development.

Technology Stack

Junior TypeScript, React/Vue, Node.js (Express/NestJS) ╨╕╨╗╨╕ Python (FastAPI), PostgreSQL, Docker, Git
Middle TypeScript strict, Next.js/Nuxt, NestJS/FastAPI, PostgreSQL/Redis, Prisma/SQLAlchemy, Docker Compose, CI/CD
Senior Next.js/Remix + NestJS/FastAPI, PostgreSQL/Redis/MongoDB, Kubernetes basics, GraphQL/tRPC, Terraform basics, Monitoring
Lead / Staff Fullstack architecture, Mono-repo (Nx/Turborepo), Multi-DB strategy, Cloud (AWS/GCP/Yandex Cloud), Feature flags
Principal Product platform architecture, Multi-stack strategy, Serverless, Edge computing

Focus by Level

Junior

Building simple features from UI to API. Working with React/Vue + Node.js/Python. Writing basic tests. Fixing bugs on both sides.

Middle

Independent end-to-end feature development. Designing APIs and UIs. Setting up CI/CD. Working with databases. Performance optimization.

Senior

Application architecture (frontend + backend). Technology selection. UX and performance optimization. Mentoring. Data model design.

Lead / Staff

Technical leadership of fullstack team. Architectural decisions. Frontend and backend standards. Coordination with design and product.

Principal

Product engineering strategy. Choosing technology stack for the company. Architecture for fast time-to-market.

Skill Matrix

65 skills × 5 levels. Click on a cell for details.

A Awareness W Working V Advanced E Expert

AI-Assisted Development

4 skills
Skills Jun Mid Sen Lead Princ
GitHub Copilot A W A E E
Cursor IDE A W A A
ChatGPT / Claude A W A E E
Prompt Engineering for Code A W A E

API & Integration

6 skills
Skills Jun Mid Sen Lead Princ
REST API Design A W A E E
GraphQL Design A W A E E
WebSocket API Design A W A E E
gRPC & Protocol Buffers A W A E E
API Versioning Strategies A W A E E
API Documentation A W A E E

Architecture & System Design

1 skills
Skills Jun Mid Sen Lead Princ
System Design Fundamentals A W A E E

Backend Development

4 skills
Skills Jun Mid Sen Lead Princ
Python Web Frameworks A W A E E
Node.js Frameworks A W A E E
Apache Kafka A W A E E
Redis A W A E E

Cloud & Infrastructure

5 skills
Skills Jun Mid Sen Lead Princ
Docker A W A E E
Kubernetes Core A W A E E
Terraform A W A E E
AWS A W A E E
Network Fundamentals A W A

Database Management

6 skills
Skills Jun Mid Sen Lead Princ
PostgreSQL A W A E E
MongoDB A W A E E
Database Indexing A W A E E
Query Optimization A W A E
Data Modeling & Schema Design A W A E E
Database Migrations A W A E E

DevOps & CI/CD

1 skills
Skills Jun Mid Sen Lead Princ
GitHub Actions / GitLab CI A W A E E

Frontend Development

14 skills
Skills Jun Mid Sen Lead Princ
React Core A W A E E
Next.js A W A E E
Modern CSS A W A E E
Tailwind CSS A W A E E
Design System Development A W A E E
Web Accessibility A W A E E
Core Web Vitals A W A E E
Bundle Optimization A W A E E
Vite & Modern Bundlers A W A E E
Component Testing A W A E E
State Management A W A E E
Data Fetching A W A E E
Micro Frontends A W A E E
SSR/SSG/ISR Patterns A W A E E

Observability & Monitoring

5 skills
Skills Jun Mid Sen Lead Princ
Structured Logging A W A E E
ELK Stack A W A E E
Prometheus & Grafana A W A E E
OpenTelemetry A W A E E
SLI / SLO / SLA A W A E E

Performance Engineering

1 skills
Skills Jun Mid Sen Lead Princ
Latency Optimization A W A E E

Programming Fundamentals

9 skills
Skills Jun Mid Sen Lead Princ
Algorithms & Complexity A W A E E
Data Structures A W A E E
OOP & SOLID Principles A W A E E
Design Patterns A W A E E
Multithreading A W A E E
Async Programming A W A E E
Code Quality & Refactoring A W A E E
Type Safety & Type Systems A W A E E
Memory Management A W A E E

Security

3 skills
Skills Jun Mid Sen Lead Princ
OWASP & Application Security A W A E E
Secure Coding Practices A W A E E
JWT / OAuth2 / OIDC A W A E E

Testing & QA

4 skills
Skills Jun Mid Sen Lead Princ
TDD & BDD A W A E E
Unit Testing A W A E E
Integration Testing A W A E E
E2E Testing A W A E E

Version Control & Collaboration

2 skills
Skills Jun Mid Sen Lead Princ
Git Advanced A W A E E
Code Review A W A E E

FAQ

What skills are needed for the Fullstack Developer role?

The Fullstack Developer role requires 65 skills, of which 185 are mandatory. Skills are distributed across 5 levels: from Junior to Principal. See full matrix.

How to advance to the next level in the Fullstack Developer role?

Use the Grade Calculator to assess your current level and get personalized recommendations. The system will show which skills need to be developed for the next level.

What tech stack is used in the Fullstack Developer role?

The stack includes 5 technologies at different levels. TypeScript, React/Vue, Node.js (Express/NestJS) ╨╕╨╗╨╕ Python (FastAPI), PostgreSQL, Docker, Git, TypeScript strict, Next.js/Nuxt, NestJS/FastAPI, PostgreSQL/Redis, Prisma/SQLAlchemy, Docker Compose, CI/CD, Next.js/Remix + NestJS/FastAPI, PostgreSQL/Redis/MongoDB, Kubernetes basics, GraphQL/tRPC, Terraform basics, Monitoring...

How does the community define requirements for the Fullstack Developer role?

Role requirements are shaped by the community through a proposal system. Any member can suggest changes that go through voting and expert review.

Community

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