Database Engineer / DBA
Designing, optimizing, and administering databases
Level:
Programming Fundamentals
7 skills · 35 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| Algorithms & Data Structures | |||||
| Algorithms & Complexity | Awareness | Working | Advanced | Expert | Expert |
| Data Structures | Awareness | Working | Advanced | Expert | Expert |
| OOP & Design Patterns | |||||
| OOP & SOLID Principles | Awareness | Working | Advanced | Expert | Expert |
| Design Patterns | Awareness | Working | Advanced | Expert | Expert |
| Concurrency & Parallelism | |||||
| Multithreading | Awareness | Working | Advanced | Expert | Expert |
| Async Programming | Awareness | Working | Advanced | Expert | Expert |
| Clean Code & Refactoring | |||||
| Code Quality & Refactoring | Awareness | Working | Advanced | Expert | Expert |
Backend Development
1 skills · 5 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| Caching | |||||
| Redis | Awareness | Working | Advanced | Expert | Expert |
Database Management
16 skills · 80 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| Relational Databases | |||||
| PostgreSQL | Awareness | Working | Advanced | Expert | Expert |
| MySQL / MariaDB | Awareness | Working | Advanced | Expert | Expert |
| NoSQL Databases | |||||
| MongoDB | Awareness | Working | Advanced | Expert | Expert |
| ClickHouse | Awareness | Working | Advanced | Expert | Expert |
| Apache Cassandra | Awareness | Working | Advanced | Expert | Expert |
| DynamoDB | Awareness | Working | Advanced | Expert | Expert |
| Neo4j | Awareness | Working | Advanced | Expert | Expert |
| NewSQL Databases | |||||
| CockroachDB | Awareness | Working | Advanced | Expert | Expert |
| Vitess | Awareness | Working | Advanced | Expert | Expert |
| Database Optimization | |||||
| Database Indexing | Awareness | Working | Advanced | Expert | Expert |
| Query Optimization | Awareness | Working | Advanced | Expert | Expert |
| Transactions & Concurrency | Awareness | Working | Advanced | Expert | Expert |
| Database Administration | |||||
| Replication & High Availability | Awareness | Working | Advanced | Expert | Expert |
| Backup & Disaster Recovery | Awareness | Working | Advanced | Expert | Expert |
| Data Modeling | |||||
| Data Modeling & Schema Design | Awareness | Working | Advanced | Expert | Expert |
| Database Migrations | Awareness | Working | Advanced | Expert | Expert |
API & Integration
1 skills · 5 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| REST API | |||||
| REST API Design | Awareness | Working | Advanced | Expert | Expert |
Cloud & Infrastructure
5 skills · 25 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| Containerization | |||||
| Docker | Awareness | Working | Advanced | Expert | Expert |
| Kubernetes & Orchestration | |||||
| Kubernetes Core | Awareness | Working | Advanced | Expert | Expert |
| Infrastructure as Code | |||||
| Terraform | Awareness | Working | Advanced | Expert | Expert |
| Cloud Providers | |||||
| AWS | Awareness | Working | Advanced | Expert | Expert |
| Networking | |||||
| Network Fundamentals | Awareness | Working | Advanced | Expert | Expert |
DevOps & CI/CD
1 skills · 3 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| CI/CD | |||||
| GitHub Actions / GitLab CI | Working | Advanced | Expert | — | — |
Testing & QA
2 skills · 10 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| Unit Testing | |||||
| Unit Testing | Awareness | Working | Advanced | Expert | Expert |
| Integration Testing | |||||
| Integration Testing | Awareness | Working | Advanced | Expert | Expert |
Security
3 skills · 15 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| Application Security | |||||
| OWASP & Application Security | Awareness | Working | Advanced | Expert | Expert |
| Secure Coding Practices | Awareness | Working | Advanced | Expert | Expert |
| Infrastructure Security | |||||
| Secrets Management | Awareness | Working | Advanced | Expert | Expert |
AI-Assisted Development
3 skills · 15 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| AI Coding Assistants | |||||
| GitHub Copilot | Awareness | Working | Advanced | Expert | Expert |
| ChatGPT / Claude | Awareness | Working | Advanced | Expert | Expert |
| Prompt Engineering | |||||
| Prompt Engineering for Code | Awareness | Working | Advanced | Expert | Expert |
Architecture & System Design
3 skills · 15 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| System Design | |||||
| System Design Fundamentals | Awareness | Working | Advanced | Expert | Expert |
| Capacity Planning | Awareness | Working | Advanced | Expert | Expert |
| Disaster Recovery Design | Awareness | Working | Advanced | Expert | Expert |
Observability & Monitoring
6 skills · 30 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| Logging | |||||
| Structured Logging | Awareness | Working | Advanced | Expert | Expert |
| ELK Stack | Awareness | Working | Advanced | Expert | Expert |
| Metrics & Monitoring | |||||
| Prometheus & Grafana | Awareness | Working | Advanced | Expert | Expert |
| Custom Business Metrics | Awareness | Working | Advanced | Expert | Expert |
| Alerting & On-Call | |||||
| SLI / SLO / SLA | Awareness | Working | Advanced | Expert | Expert |
| Incident Management | |||||
| On-Call Management | Awareness | Working | Advanced | Expert | Expert |
Version Control & Collaboration
2 skills · 10 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| Git & Workflows | |||||
| Git Advanced | Awareness | Working | Advanced | Expert | Expert |
| Code Review | |||||
| Code Review | Awareness | Working | Advanced | Expert | Expert |
Documentation
2 skills · 10 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| Technical Documentation | |||||
| Architecture Documentation: C4, arc42 | Awareness | Working | Advanced | Expert | Expert |
| Runbook & Playbook Writing | Awareness | Working | Advanced | Expert | Expert |
Performance Engineering
4 skills · 20 requirements| Skill | Junior | Middle | Senior | Lead | Principal |
|---|---|---|---|---|---|
| Profiling | |||||
| CPU Profiling | Awareness | Working | Advanced | Expert | Expert |
| I/O & Disk Profiling | Awareness | Working | Advanced | Expert | Expert |
| Optimization | |||||
| Database Performance Tuning | Awareness | Working | Advanced | Expert | Expert |
| Benchmarking | |||||
| Benchmarking Tools & Methodology | Awareness | Working | Advanced | Expert | Expert |