Blockchain Developer
Developing blockchain applications, smart contracts, and decentralized systems
Level:
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 | Working | Advanced | Advanced |
| Design Patterns | Awareness | Working | Working | Advanced | Advanced |
| Concurrency & Parallelism | |||||
| Multithreading | Awareness | Working | Working | Advanced | Advanced |
| Async Programming | Awareness | Working | Working | Advanced | Advanced |
| Clean Code & Refactoring | |||||
| Code Quality & Refactoring | Awareness | Working | Working | Advanced | Advanced |
| Clean Code | Awareness | Working | Advanced | Advanced | Expert |
| Type Systems | |||||
| Type Safety & Type Systems | Awareness | Working | Working | Advanced | Advanced |
Backend Development
2 skills · 10 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| Web Frameworks | |||||
| Node.js Frameworks | Awareness | Working | Working | Advanced | Advanced |
| Caching | |||||
| Redis | Awareness | Working | Working | Advanced | Advanced |
Frontend Development
1 skills · 5 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| React Ecosystem | |||||
| React Core | Awareness | Working | Working | Advanced | Advanced |
Database Management
2 skills · 10 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| Relational Databases | |||||
| PostgreSQL | Awareness | Working | Working | Advanced | Advanced |
| Database Optimization | |||||
| Database Indexing | Awareness | Working | Working | Advanced | Advanced |
API & Integration
4 skills · 20 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| REST API | |||||
| REST API Design | Awareness | Working | Working | Advanced | Advanced |
| GraphQL | |||||
| GraphQL Design | Awareness | Working | Working | Advanced | Advanced |
| API Protocols | |||||
| WebSocket API Design | Awareness | Working | Working | Advanced | Advanced |
| API Management | |||||
| API Documentation | Awareness | Working | Working | Advanced | Advanced |
Cloud & Infrastructure
6 skills · 30 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| Containerization | |||||
| Docker | Awareness | Working | Working | Advanced | Advanced |
| Kubernetes & Orchestration | |||||
| Kubernetes Core | Awareness | Working | Working | Advanced | Advanced |
| Kubernetes Orchestration | Awareness | Working | Working | Advanced | Advanced |
| Infrastructure as Code | |||||
| Terraform | Awareness | Working | Working | Advanced | Advanced |
| Cloud Providers | |||||
| AWS | Awareness | Working | Working | Advanced | Advanced |
| Networking | |||||
| Network Fundamentals | Awareness | Working | Working | Advanced | Advanced |
DevOps & CI/CD
1 skills · 5 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| CI/CD | |||||
| GitHub Actions / GitLab CI | Awareness | Working | Working | Advanced | Advanced |
Testing & QA
5 skills · 25 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| Unit Testing | |||||
| Unit Testing | Awareness | Working | Working | Advanced | Advanced |
| Unit Testing | Awareness | Working | Advanced | Advanced | Expert |
| Integration Testing | |||||
| Integration Testing | Awareness | Working | Working | Advanced | Advanced |
| E2E Testing | |||||
| E2E Testing | Awareness | Working | Working | Advanced | Advanced |
| Performance Testing | |||||
| Performance Testing | Awareness | Working | Working | Advanced | Advanced |
Security
3 skills · 15 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| Application Security | |||||
| OWASP & Application Security | Awareness | Working | Working | Advanced | Advanced |
| Secure Coding Practices | Awareness | Working | Working | Advanced | Advanced |
| Threat Modeling | Awareness | Working | Working | Advanced | Advanced |
AI-Assisted Development
4 skills · 20 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| AI Coding Assistants | |||||
| GitHub Copilot | Awareness | Working | Working | Advanced | Advanced |
| Cursor IDE | Awareness | Working | Working | Advanced | Advanced |
| ChatGPT / Claude | Awareness | Working | Working | Advanced | Advanced |
| Prompt Engineering | |||||
| Prompt Engineering for Code | Awareness | Working | Working | Advanced | Advanced |
Architecture & System Design
3 skills · 15 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| System Design | |||||
| System Design Fundamentals | Awareness | Working | Working | Advanced | Advanced |
| Architecture Patterns | |||||
| Distributed Systems | Awareness | Working | Advanced | Advanced | Expert |
| Event-Driven Architecture | |||||
| Event Sourcing | Awareness | Working | Advanced | Advanced | Expert |
Observability & Monitoring
3 skills · 15 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| Logging | |||||
| Structured Logging | Awareness | Working | Working | Advanced | Advanced |
| Metrics & Monitoring | |||||
| Prometheus & Grafana | Awareness | Working | Working | Advanced | Advanced |
| Distributed Tracing | |||||
| OpenTelemetry | Awareness | Working | Working | Advanced | Advanced |
Version Control & Collaboration
2 skills · 10 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| Git & Workflows | |||||
| Git Advanced | Awareness | Working | Working | Advanced | Advanced |
| Code Review | |||||
| Code Review | Awareness | Working | Working | Advanced | Advanced |
Blockchain & Web3
32 skills · 160 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| Blockchain Fundamentals | |||||
| Blockchain Fundamentals | Awareness | Working | Advanced | Advanced | Expert |
| Consensus Mechanisms: PoW, PoS, BFT | Awareness | Working | Advanced | Advanced | Expert |
| Applied Cryptography | Awareness | Working | Advanced | Advanced | Expert |
| Applied Cryptography | Awareness | Working | Advanced | Advanced | Expert |
| Merkle Trees | Awareness | Working | Advanced | Advanced | Expert |
| Zero-Knowledge Proofs | Awareness | Working | Advanced | Advanced | Expert |
| Smart Contracts | |||||
| Solidity | Awareness | Working | Working | Advanced | Advanced |
| Smart Contract Security & Auditing | Awareness | Working | Advanced | Advanced | Expert |
| Smart Contract Testing: Foundry, Hardhat | Awareness | Working | Advanced | Advanced | Expert |
| Solidity Development | Awareness | Working | Advanced | Advanced | Expert |
| Vyper Development | Awareness | Working | Working | Advanced | Advanced |
| Smart Contract Audit | Awareness | Working | Advanced | Advanced | Expert |
| Smart Contract Platforms | Awareness | Working | Advanced | Advanced | Expert |
| DeFi | |||||
| DeFi Protocols: AMM, Lending, DEX | Awareness | Working | Advanced | Advanced | Expert |
| Tokenomics Design | Awareness | Working | Working | Advanced | Advanced |
| Crypto Economics | Awareness | Working | Advanced | Advanced | Expert |
| Blockchain Infrastructure | |||||
| Ethereum Ecosystem | Awareness | Working | Advanced | Advanced | Expert |
| Layer 2 Solutions: Rollups, Sidechains | Awareness | Working | Advanced | Advanced | Expert |
| Blockchain Indexing: The Graph, Subgraph | Awareness | Working | Advanced | Advanced | Expert |
| Node Operation | Awareness | Working | Advanced | Advanced | Expert |
| ZK-Rollups | Awareness | Working | Advanced | Advanced | Expert |
| Web3 Development | |||||
| Web3 Frontend: ethers.js, wagmi | Awareness | Working | Working | Advanced | Advanced |
| Wallet Integration: MetaMask, WalletConnect | Awareness | Working | Working | Advanced | Advanced |
| IPFS & Decentralized Storage | Awareness | Working | Advanced | Advanced | Expert |
| NFT Development | Awareness | Working | Advanced | Advanced | Expert |
| Cross-Chain Bridges | Awareness | Working | Advanced | Advanced | Expert |
| DAO Governance | Awareness | Working | Working | Advanced | Advanced |
| DApp Development | Awareness | Working | Advanced | Advanced | Expert |
| NFT Standards | Awareness | Working | Working | Advanced | Advanced |
| Token Standards | Awareness | Working | Advanced | Advanced | Expert |
| Web3 Libraries | Awareness | Working | Advanced | Advanced | Expert |
| Cross-Chain Bridges | Awareness | Working | Advanced | Advanced | Expert |
Embedded & IoT
1 skills · 5 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| Embedded Programming | |||||
| Rust Language | Awareness | Working | Advanced | Advanced | Expert |
Documentation
1 skills · 5 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| Technical Documentation | |||||
| API Documentation Writing | Awareness | Working | Working | Advanced | Advanced |