Level path

Advanced Data

Senior DE

Design, evolve, and debug systems across boundaries with strong tradeoff awareness.

Total concepts 346

Curated for this specific career level.

Specific to this level 17

Concepts explicitly listed in this level.

Knowledge tracks 6

Concepts span multiple tracks and layers.

Job description signals Typical responsibilities

Build data ingestion, transformation, orchestration, storage, quality, lineage, and serving pipelines.
Model analytical and operational data for correctness, scalability, privacy, and downstream usability.
Support analytics, BI, ML, compliance, and product teams with reliable data platforms.
Lead the technical design and delivery of complex work across a team-owned system area.
Review architecture, mentor engineers, and raise engineering quality standards.
Anticipate scalability, security, operability, and migration risks before implementation.
Coordinate cross-functional work and make durable tradeoffs under ambiguity.

Cumulative view includes

Dev / Junior DevSE / Junior SEDE / Junior DEDev / DevSE / Mid SEDE / DEDev / Senior DevSE / Senior SE

Specific to this level 17 Cumulative 346

Track / layer mastery Concept coverage by layer

DATA

Data

12 concepts

Data Platforms 10 Data Engineering 2

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Software

5 concepts

Databases 2 Security 2 System Design 1

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Software

191 concepts

Software Design 41 System Design 28 Programming 27 Databases 18 Programming Languages 14 Algorithms & Data Structures 12 Software Architecture 12 Security 12 Computer Networks 9 Distributed Systems 6 Quality Assurance 6 Operating Systems 5 Enterprise Architecture 1

DATA

Data

65 concepts

Data Platforms 33 Data Engineering 20 Data Foundations 12

OPS

Operations

42 concepts

Deployment 14 Observability 8 Build & Packaging 7 Runtime Infrastructure 5 Reliability 4 Continuous Integration 3 Local Development 1

Product

23 concepts

Developer Tools 11 API Products 10 Web Applications 2

MGT

Management

22 concepts

Business Foundations 10 Requirements & Planning 8 Delivery Methodologies 3 Team Leadership 1

Theory

3 concepts

Algorithmic Analysis 3

Learning scope Concepts by learning area

Specific to this level

Concepts introduced by this level

Level concepts

Data foundations

Understand datasets, schemas, quality, SQL, and analytical storage basics.

Data Federation Data · Data Platforms new Query Planner Software · Databases new Query Optimizer Software · Databases new Data Lakehouse Data · Data Platforms new Data Mesh Data · Data Platforms new Data Product Data · Data Engineering new Data Fabric Data · Data Platforms new

Level concepts

Pipeline orchestration

Build and operate data movement and transformation workflows at scale.

Apache Spark Data · Data Engineering new Snowflake Data · Data Platforms new Delta Lake Data · Data Platforms new Apache Iceberg Data · Data Platforms new Apache Hudi Data · Data Platforms new Data Compaction Data · Data Platforms new Small Files Problem Data · Data Platforms new

Level concepts

Data platform production

Make data platforms reliable, discoverable, observable, and ready for analytics and ML consumers.

Access Control Software · Security new Secrets Management Software · Security new System Workload Software · System Design new

Cumulative level expectation

All concepts expected at this level

Inherited path

Coding Foundations

Developers begin by learning to translate requirements into working, readable code.

Inherited path

Developer Tooling

Daily development depends on version control, language tooling, static checks, and repeatable local workflows.

Git Product · Developer Tools awareness Compiler Software · Programming Languages awareness Interpreter Software · Programming Languages Package Manager Operations · Build & Packaging Linting Operations · Build & Packaging Code Editor Product · Developer Tools CLI Software · Operating Systems Version Control Product · Developer Tools Dependency Operations · Build & Packaging Artifact Operations · Build & Packaging Development Environment Operations · Local Development Software Ecosystem Software · Programming Repository Product · Developer Tools awareness Commit Product · Developer Tools awareness Branch Product · Developer Tools awareness Pull Request Product · Developer Tools awareness

Inherited path

Testing & Debugging

A developer owns not only writing code, but proving that it behaves as intended.

Unit Test Software · quality-assurance awareness Debugger Product · Developer Tools awareness Error Handling Software · Programming Code Documentation Software · Software Design Software Testing Software · quality-assurance awareness Test Case Software · quality-assurance awareness

Inherited path

Software Systems Basics

Even implementation-focused developers need a working vocabulary for clients, servers, interfaces, web requests, and the lifecycle surrounding a change.