# SOLID Principles

Skill · Software Development and Engineering Practices

Canonical page: https://career.thegoodapps.co/skills/solid-principles

SOLID Principles are five object-oriented design guidelines—Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, and Dependency Inversion—coined by Robert C. Martin ("Uncle Bob") to help developers write maintainable, extensible, and testable code. They are widely taught in software engineering education and applied by developers working in object-oriented languages like Java, C#, and Python. Following SOLID principles helps reduce tight coupling and makes codebases easier to refactor and extend over time.

## SOLID Principles in the job market

- Open roles: 3
- Employers hiring: 3
- Last checked: September 13, 2026

## Roles that use SOLID Principles

- [Software Engineer](https://career.thegoodapps.co/occupations/software-engineer) — 3

Related skills: [Design Patterns](https://career.thegoodapps.co/skills/design-patterns), [Software Design Patterns](https://career.thegoodapps.co/skills/software-design-patterns), [Dependency Injection](https://career.thegoodapps.co/skills/dependency-injection), [Object Oriented Design](https://career.thegoodapps.co/skills/object-oriented-design), [Object-Oriented Design (OOD)](https://career.thegoodapps.co/skills/object-oriented-design-ood), [Decorator Patterns](https://career.thegoodapps.co/skills/decorator-patterns), [Programming Principles](https://career.thegoodapps.co/skills/programming-principles)

## Open roles requiring SOLID Principles (3)

- [Sr Software Engineer – API Platform, Product Engineering (Python/Typescript)](https://career.thegoodapps.co/jobs/14601089-1049-4176-97cb-cb486ac5a770/sr-software-engineer-api-platform-product-engineering-python-typescript-at) at [Workday](https://career.thegoodapps.co/organizations/workday) — Full-time, Pleasanton, CA, $176,000 – $264,000
- [Principal Engineer, DI&F Product Engineering](https://career.thegoodapps.co/jobs/16ab844f-b062-4ecc-addf-859390b30c92/principal-engineer-di-f-product-engineering-at-lseg) at [LSEG](https://career.thegoodapps.co/organizations/lseg) — Allen, TX
- [Senior Software Engineer, Platform](https://career.thegoodapps.co/jobs/c25b2854-30dc-42fc-b5f7-9756e499fa47/senior-software-engineer-platform-at-wp-engine) at [WP Engine](https://career.thegoodapps.co/organizations/wp-engine) — PLN 244,000 – PLN 335,500