Level path

Software Developer

Dev

Own features and services with solid implementation judgment across neighboring layers.

Total concepts 126

Curated for this specific career level.

Specific to this level 61

Concepts explicitly listed in this level.

Knowledge tracks 5

Concepts span multiple tracks and layers.

Job description signals Typical responsibilities

Own features end to end from design through implementation, testing, release, and support.
Make local technical tradeoffs and explain them clearly to teammates.
Improve reliability, maintainability, and observability of the systems you touch.
Collaborate with product, design, QA, operations, and adjacent engineering teams.

Cumulative view includes

Dev / Junior Dev

Specific to this level 61 Cumulative 126

Track / layer mastery Concept coverage by layer

{}

Software

40 concepts

Software Design 17 Programming 10 Programming Languages 6 Databases 5 Quality Assurance 2

OPS

Operations

11 concepts

Deployment 5 Build & Packaging 3 Continuous Integration 2 Observability 1

MGT

Management

5 concepts

Requirements & Planning 3 Delivery Methodologies 1 Team Leadership 1

Product

3 concepts

Developer Tools 3

DATA

Data

2 concepts

Data Foundations 2

{}

Software

74 concepts

Programming 22 Software Design 18 Programming Languages 13 Algorithms & Data Structures 7 Databases 5 Quality Assurance 5 System Design 2 Operating Systems 1 Computer Networks 1

MGT

Management

18 concepts

Business Foundations 10 Requirements & Planning 5 Delivery Methodologies 2 Team Leadership 1

OPS

Operations

17 concepts

Build & Packaging 7 Deployment 5 Continuous Integration 2 Local Development 1 Runtime Infrastructure 1 Observability 1

Product

15 concepts

Developer Tools 11 API Products 2 Web Applications 2

DATA

Data

2 concepts

Data Foundations 2

Learning scope Concepts by learning area

Specific to this level

Concepts introduced by this level

Level concepts

Application Design

Mid-level developers own complete features and make local design choices inside an established architecture.

Level concepts

Runtime & Data

Feature ownership requires practical knowledge of runtimes, memory management, and relational persistence.

Runtime Software · Programming Languages working new Garbage Collection Software · Programming Languages working new Relational Database Software · Databases new SQL Software · Databases new Database Index Software · Databases new Query Data · Data Foundations new Data Model Data · Data Foundations new Call Stack Software · Programming new Heap Memory Software · Programming new Event Loop Software · Programming new Serialization Software · Programming new Join Software · Databases new Write-Ahead Log Software · Databases new Abstract Syntax Tree Software · Programming Languages new Lexer Software · Programming Languages new Parser Software · Programming Languages new Bytecode Software · Programming Languages new

Level concepts

Delivery & Collaboration

Professional development includes the complete implementation loop, not only editing source files.

Code Review Management · Team Leadership working new Contract Testing Software · quality-assurance working new Software Deployment Operations · Deployment new Environment Operations · Deployment new CI/CD Pipeline Operations · Continuous Integration new Logging Operations · Observability new Integration Test Software · quality-assurance new Mock Software · Software Design new Semantic Versioning Operations · Build & Packaging new PRD Management · Requirements & Planning new TSD Software · Software Design new Product Backlog Management · Requirements & Planning new Backlog Refinement Management · Requirements & Planning new Sprint Management · Delivery Methodologies new Branching Strategy Product · Developer Tools new Trunk-Based Development Operations · Continuous Integration working new Merge Product · Developer Tools new Merge Conflict Product · Developer Tools new Release Operations · Deployment working new Release Notes Operations · Deployment new Changelog Operations · Build & Packaging new Immutable Artifact Operations · Build & Packaging new Environment Promotion Operations · Deployment 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.

Client Product · Web Applications awareness Server Operations · Runtime Infrastructure awareness Client-Server Architecture Product · Web Applications awareness Request-Response Product · API Products awareness API Product · API Products awareness HTTP Software · Computer Networks awareness Requirements Engineering Management · Requirements & Planning awareness Functional Requirement Software · System Design awareness NFR Software · System Design awareness Acceptance Criteria Management · Requirements & Planning awareness SDLC Management · Delivery Methodologies awareness

Inherited path

Employment Basics

Technical candidates benefit from understanding who employs them, how they are paid, and which terms govern the working relationship.

Path concepts

Application Design

Mid-level developers own complete features and make local design choices inside an established architecture.

Path concepts

Runtime & Data

Feature ownership requires practical knowledge of runtimes, memory management, and relational persistence.

Path concepts

Delivery & Collaboration

Professional development includes the complete implementation loop, not only editing source files.