Level path

Platform Foundations

Build reliable foundations and enough context to contribute safely with guidance.

Total concepts119

Curated for this specific career level.

Specific to this level13

Concepts explicitly listed in this level.

Knowledge tracks6

Concepts span multiple tracks and layers.

Job description signalsTypical responsibilities

Build internal platforms, deployment workflows, infrastructure automation, and CI/CD capabilities.
Improve developer experience, operational safety, environment consistency, and release velocity.
Partner with application teams on infrastructure, reliability, security, and observability practices.
Implement well-scoped tasks with guidance from more senior engineers.
Write readable code, tests, and documentation for small features or fixes.
Participate in code reviews, debugging sessions, and team ceremonies.
Learn the team codebase, delivery workflow, and production support expectations.

Cumulative view includes

Dev / Junior DevSE / Junior SEInfrastructure Engineering / Junior Infrastructure Engineer

Specific to this level 13Cumulative 119

Track / layer masteryConcept coverage by layer

OPS

Operations

10 concepts

Build & Packaging3 Continuous Integration2 Runtime Infrastructure2 Deployment1 Observability1 Orchestration1

Product

3 concepts

Developer Tools3

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Software

66 concepts

Software Design15 Programming13 Algorithms & Data Structures12 Programming Languages7 Operating Systems5 Databases5 Computer Networks3 Quality Assurance2 Security2 Software Architecture1 System Design1

OPS

Operations

29 concepts

Build & Packaging7 Runtime Infrastructure6 Observability6 Continuous Integration3 Reliability2 Local Development1 Deployment1 Cloud Infrastructure1 Orchestration1 Security Operations1

MGT

Management

11 concepts

Business Foundations10 Requirements & Planning1

Product

8 concepts

Developer Tools7 Web Applications1

Theory

3 concepts

Algorithmic Analysis3

DATA

Data

2 concepts

Data Foundations2

Learning scopeConcepts by learning area

Specific to this level

Concepts introduced by this level

Level concepts

Platform Product Foundations

Understand platform engineering as an internal product discipline.

Platform EngineeringOperations · Orchestrationnew Developer ExperienceProduct · Developer Toolsnew Internal Developer PlatformProduct · Developer Toolsnew Self-service PlatformProduct · Developer Toolsnew

Level concepts

Developer Workflow

Turn source code into tested and deployable artifacts through standardized workflows.

Build SystemOperations · Build & Packagingnew Container ImageOperations · Build & Packagingnew Software DeploymentOperations · Deploymentnew Continuous Integration PracticeOperations · Continuous Integrationnew Continuous DeliveryOperations · Continuous Integrationnew Image RegistryOperations · Build & Packagingnew

Level concepts

Platform Runtime

Package application runtime capabilities for repeatable developer use.

ContainerOperations · Runtime Infrastructurenew DockerOperations · Runtime Infrastructurenew Distributed TracingOperations · Observabilitynew

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.

GitProduct · Developer Toolsawareness CompilerSoftware · Programming Languagesawareness InterpreterSoftware · Programming Languages Package ManagerOperations · Build & Packaging LintingOperations · Build & Packaging Code EditorProduct · Developer Tools CLISoftware · Operating Systems Version ControlProduct · Developer Tools DependencyOperations · Build & Packaging ArtifactOperations · Build & Packaging Development EnvironmentOperations · Local Development Software EcosystemSoftware · Programming

Inherited path

Testing & Debugging

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

Unit TestSoftware · quality-assuranceawareness DebuggerProduct · Developer Toolsawareness Error HandlingSoftware · Programming Code DocumentationSoftware · Software Design

Inherited path

Employment Basics

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

EmployeeManagement · business-foundationsawareness ContractorManagement · business-foundationsawareness EORManagement · business-foundations Offer LetterManagement · business-foundations Employment ContractManagement · business-foundations CompensationManagement · business-foundations Employee BenefitsManagement · business-foundations Equity CompensationManagement · business-foundations PayrollManagement · business-foundations Statement of WorkManagement · business-foundations

Inherited path

Programming Foundations

Learn the basic building blocks used to express behavior in code.

Graph Data StructureSoftware · Algorithms & Data Structuresawareness Big O NotationTheory · Algorithmic Analysisawareness Requirements EngineeringManagement · Requirements & Planning Time ComplexityTheory · Algorithmic Analysis Space ComplexityTheory · Algorithmic Analysis TreeSoftware · Algorithms & Data Structures HeapSoftware · Algorithms & Data Structures Breadth-First SearchSoftware · Algorithms & Data Structures Depth-First SearchSoftware · Algorithms & Data Structures

Inherited path

Software Design

Structure code so it remains readable, testable, and maintainable as it grows.

Inherited path

Data & Persistence

Understand how applications store, retrieve, and protect durable state.

Relational DatabaseSoftware · Databasesawareness SQLSoftware · Databasesawareness Database IndexSoftware · Databases TransactionSoftware · Databases ACIDSoftware · Databases QueryData · Data Foundations Data ModelData · Data Foundations

Inherited path

Architecture & Systems

Design systems that handle growth, latency, failure, and multiple communicating components.

Clean ArchitectureSoftware · Software Architectureawareness Client-Server ArchitectureProduct · Web Applicationsawareness Functional RequirementSoftware · System Design

Inherited path

Production Awareness

Know how software is built, deployed, observed, and recovered in production.

CI/CD PipelineOperations · Continuous Integrationawareness Integration TestSoftware · quality-assuranceawareness System ObservabilityOperations · Observability

Inherited path

Systems Foundations

Understand the operating-system and compute foundations beneath production software.

Infrastructure EngineeringOperations · Runtime Infrastructure LinuxOperations · Runtime Infrastructure ServerOperations · Runtime Infrastructure KernelSoftware · Operating Systems ProcessSoftware · Operating Systems ShellSoftware · Operating Systems File SystemSoftware · Operating Systems Block StorageOperations · Runtime Infrastructure Object StorageOperations · Cloud Infrastructure

Inherited path

Network & Access

Operate basic connectivity and access controls for infrastructure.

IPSoftware · Computer Networks DNSSoftware · Computer Networks SubnetSoftware · Computer Networks FirewallSoftware · Security IAMSoftware · Security

Inherited path

Operations Basics

Observe, maintain, and recover infrastructure safely.

MonitoringOperations · Observability LoggingOperations · Observability AlertingOperations · Observability RunbookOperations · Reliability BackupOperations · Reliability Patch ManagementOperations · Security Operations Infrastructure MetricsOperations · Observability

Path concepts

Platform Product Foundations

Understand platform engineering as an internal product discipline.

Path concepts

Developer Workflow

Turn source code into tested and deployable artifacts through standardized workflows.

Path concepts

Platform Runtime

Package application runtime capabilities for repeatable developer use.

ContainerOperations · Runtime Infrastructurenew DockerOperations · Runtime Infrastructurenew Distributed TracingOperations · Observabilitynew