Data Engineering

Data Analyst

Analyzing data for business decisions, building reports and dashboards

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48 skills
240 requirements
98 mandatory
14 domains
Awareness 48 Working 75 Advanced 94 Expert 23
Level:
All domains Programming Fundamentals 7 Backend Development 3 Database Management 6 API & Integration 3 Cloud & Infrastructure 4 DevOps & CI/CD 1 Testing & QA 2 Security 2 Data Engineering 10 Machine Learning & AI 2 AI-Assisted Development 3 Architecture & System Design 1 Observability & Monitoring 2 Version Control & Collaboration 2
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

3 skills · 15 requirements
Skill Junior Middle Senior Lead Principal
Web Frameworks
Python Web Frameworks Awareness Working Advanced Advanced Expert
Caching
Redis Awareness Working Working Advanced Expert
Search Engines
Elasticsearch / OpenSearch Awareness Working Advanced Advanced Expert

Database Management

6 skills · 30 requirements
Skill Junior Middle Senior Lead Principal
Relational Databases
PostgreSQL Awareness Working Advanced Advanced Expert
MySQL / MariaDB Awareness Working Advanced Advanced Expert
NoSQL Databases
ClickHouse Awareness Working Advanced Advanced Expert
Database Optimization
Database Indexing Awareness Working Advanced Advanced Expert
Query Optimization Awareness Working Advanced Advanced Expert
Data Modeling
Data Modeling & Schema Design Awareness Working Advanced Advanced Expert

API & Integration

3 skills · 15 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 Management
API Documentation Awareness Working Advanced Advanced Expert

Cloud & Infrastructure

4 skills · 20 requirements
Skill Junior Middle Senior Lead Principal
Containerization
Docker Awareness Working Working Advanced Advanced
Kubernetes & Orchestration
Kubernetes Core 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

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

2 skills · 10 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

Data Engineering

10 skills · 50 requirements
Skill Junior Middle Senior Lead Principal
Batch Processing
dbt Awareness Working Advanced Advanced Expert
Pandas / Polars Awareness Working Advanced Advanced Expert
SQL-based ETL Awareness Working Advanced Advanced Expert
Data Warehousing
Data Warehouse Design Awareness Working Advanced Advanced Expert
Data Governance
Data Catalog Awareness Working Advanced Advanced Expert
Data Lineage Awareness Working Advanced Advanced Expert
Data Contracts Awareness Working Advanced Advanced Expert
Data Quality
Data Quality Awareness Working Advanced Advanced Expert
Data Orchestration
Apache Airflow Awareness Working Advanced Advanced Expert
Data Visualization
BI Dashboards Awareness Working Advanced Advanced Expert

Machine Learning & AI

2 skills · 10 requirements
Skill Junior Middle Senior Lead Principal
Classical Machine Learning
Classical ML (scikit-learn) Awareness Working Advanced Advanced Expert
MLOps
Experiment Tracking 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

1 skills · 5 requirements
Skill Junior Middle Senior Lead Principal
System Design
System Design Fundamentals Awareness Working Working Advanced Advanced

Observability & Monitoring

2 skills · 10 requirements
Skill Junior Middle Senior Lead Principal
Logging
Structured Logging Awareness Working Working Advanced Advanced
Metrics & Monitoring
Prometheus & Grafana Awareness Working Working 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
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