Database Engineering

Database Engineer / DBA

Designing, optimizing, and administering databases

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56 skills

278 requirements

113 mandatory

14 domains

Awareness 56 Working 88 Advanced 107 Expert 27

Level:

All domains Programming Fundamentals 7 Backend Development 1 Database Management 16 API & Integration 1 Cloud & Infrastructure 5 DevOps & CI/CD 1 Testing & QA 2 Security 3 AI-Assisted Development 3 Architecture & System Design 3 Observability & Monitoring 6 Version Control & Collaboration 2 Documentation 2 Performance Engineering 4

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

Programming Fundamentals

7 skills · 35 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

Backend Development

1 skills · 5 requirements

Skill	Junior	Middle	Senior	Lead	Principal
Caching
Redis	Awareness	Working	Working	Advanced	Advanced

Database Management

16 skills · 80 requirements

Skill	Junior	Middle	Senior	Lead	Principal
Relational Databases
PostgreSQL	Awareness	Working	Working	Advanced	Advanced
MySQL / MariaDB	Awareness	Working	Advanced	Advanced	Expert
NoSQL Databases
MongoDB	Awareness	Working	Advanced	Advanced	Expert
ClickHouse	Awareness	Working	Advanced	Advanced	Expert
Apache Cassandra	Awareness	Working	Advanced	Advanced	Expert
DynamoDB	Awareness	Working	Advanced	Advanced	Expert
Neo4j	Awareness	Working	Advanced	Advanced	Expert
NewSQL Databases
CockroachDB	Awareness	Working	Advanced	Advanced	Expert
Vitess	Awareness	Working	Advanced	Advanced	Expert
Database Optimization
Database Indexing	Awareness	Working	Working	Advanced	Advanced
Query Optimization	Awareness	Working	Working	Advanced	Expert
Transactions & Concurrency	Awareness	Working	Advanced	Advanced	Expert
Database Administration
Replication & High Availability	Awareness	Working	Advanced	Advanced	Expert
Backup & Disaster Recovery	Awareness	Working	Advanced	Advanced	Expert
Data Modeling
Data Modeling & Schema Design	Awareness	Working	Advanced	Advanced	Expert
Database Migrations	Awareness	Working	Advanced	Advanced	Expert

API & Integration

1 skills · 5 requirements

Skill	Junior	Middle	Senior	Lead	Principal
REST API
REST API Design	Awareness	Working	Working	Advanced	Advanced

Cloud & Infrastructure

5 skills · 25 requirements

Skill	Junior	Middle	Senior	Lead	Principal
Containerization
Docker	Awareness	Working	Working	Advanced	Advanced
Kubernetes & Orchestration
Kubernetes Core	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 · 3 requirements

Skill	Junior	Middle	Senior	Lead	Principal
CI/CD
GitHub Actions / GitLab CI	Awareness	Working	Advanced	—	—

Testing & QA

2 skills · 10 requirements

Skill	Junior	Middle	Senior	Lead	Principal
Unit Testing
Unit Testing	Awareness	Working	Working	Advanced	Advanced
Integration Testing
Integration 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
Infrastructure Security
Secrets Management	Awareness	Working	Advanced	Advanced	Expert

AI-Assisted Development

3 skills · 15 requirements

Skill	Junior	Middle	Senior	Lead	Principal
AI Coding Assistants
GitHub Copilot	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
Capacity Planning	Awareness	Working	Advanced	Advanced	Expert
Disaster Recovery Design	Awareness	Working	Advanced	Advanced	Expert

Observability & Monitoring

6 skills · 30 requirements

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

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

Documentation

2 skills · 10 requirements

Skill	Junior	Middle	Senior	Lead	Principal
Technical Documentation
Architecture Documentation: C4, arc42	Awareness	Working	Advanced	Advanced	Expert
Runbook & Playbook Writing	Awareness	Working	Advanced	Advanced	Expert

Performance Engineering

4 skills · 20 requirements

Skill	Junior	Middle	Senior	Lead	Principal
Profiling
CPU Profiling	Awareness	Working	Working	Advanced	Expert
I/O & Disk Profiling	Awareness	Working	Advanced	Advanced	Expert
Optimization
Database Performance Tuning	Awareness	Working	Advanced	Advanced	Expert
Benchmarking
Benchmarking Tools & Methodology	Awareness	Working	Advanced	Advanced	Expert

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