> Markdown version of [/jobs/ext/2723048-frontend-software-engineer](https://www.wearedevelopers.com/jobs/ext/2723048-frontend-software-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Frontend Software Engineer

- **Company:** Joseph Sleeper & Sons, Inc.
- **Location:** United States
- **Experience:** Expert
- **Salary:** $180,000.0 - $235,000.0
- **Contract:** Permanent contract
- **Skills:** Clean Code Principles, JavaScript (Programming Language), Application Programming Interfaces (APIs), Mobile Application Development, Software Debugging, Web Development, Human-Computer Interaction, TypeScript, Web Content Accessibility Guidelines, ReactJS, Backend, Information Technology, Graphql, React Native, Front End Software Development, Software Coding, Restful APIs, Data Caching
- **Published:** September 4, 2026
- **Apply:** https://startup.jobs/senior-frontend-engineer-mobile-sleeper-6236557

## About the Role

* A degree in Computer Science or equivalent experience
 * 5+ years of mobile / web development with an emphasis on frontend
 * Desire to take on and own a large scale product with freedom to design and develop a best in class product
 * Proven ability to develop and implement algorithms or systems in a professional setting, with strong coding skills in Javascript and knowledge of best practices
 * Highly proactive, with a track record of building processes from scratch and a willingness to challenge traditional risk management paradigms.
 * Comfortable in fast-paced, ambiguous environments, thriving on innovation and the challenge of creating something new.

## Description

We are searching for a highly intelligent and innovative Frontend Software Engineer to join our team. At Sleeper, we believe in the power of smart, creative individuals to drive change and build incredible things, regardless of their background in specific technologies. You will play a crucial role in developing our mobile and web products to ensure scalability, reliability, and quality, impacting millions of dedicated users every day., * Collaborate with designers to understand user requirements and translate them into technical specifications for our products.

 * Write clean, maintainable, and efficient code using React Native, TypeScript, and related libraries (React Query, Navigation, Reanimated, etc).
 * Develop reusable UI components and implement a well-structured component hierarchy for the application.
 * Implement user interface (UI) functionality and logic using React features like state management, props, hooks, and lifecycle methods.
 * Integrate front-end components with back-end services using APIs (RESTful or GraphQL).
 * Troubleshoot and debug complex performance, socket, data caching and other issues
 * Stay up-to-date on the latest advancements in React, mobile development best practices, and accessibility guidelines.


## Related Videos

- [Watch Tests Go Brrrr! : Getting Started with Cypress in ReactJS](https://www.wearedevelopers.com/videos/282-watch-tests-go-brrrr-getting-started-with-cypress-in-reactjs)
- [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock)
- [Putting the Graph In GraphQL With The Neo4j GraphQL Library](https://www.wearedevelopers.com/videos/257-putting-the-graph-in-graphql-with-the-neo4j-graphql-library)
- [But, you're not Facebook](https://www.wearedevelopers.com/videos/378-but-you-re-not-facebook)
- [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape)
- [Nest.js - TypeScript in the backend can also be clean](https://www.wearedevelopers.com/videos/1033-nest-js-typescript-in-the-backend-can-also-be-clean)

## Related Articles

- [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers)
- [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023)
- [Web Development Best Practices: What The Data Tells us](https://www.wearedevelopers.com/magazine/84-web-development-best-practices-what-the-data-tells-us)
- [Dev Digest 133 - Back to Front](https://www.wearedevelopers.com/magazine/474-dev-digest-133-back-to-front)
- [The Best 7 Frontend Frameworks for Developers in 2025](https://www.wearedevelopers.com/magazine/400-the-best-7-frontend-frameworks-for-developers-in-2025)
- [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025)