> Markdown version of [/jobs/ext/138621-sr-full-stack-engineer-frontend-heavy](https://www.wearedevelopers.com/jobs/ext/138621-sr-full-stack-engineer-frontend-heavy). 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). --- # Sr. Full-Stack Engineer (Frontend Heavy) - **Company:** PASONA INC - **Location:** Irvine, CA, United States - **Experience:** Expert - **Salary:** $110,000.0 - $120,000.0 - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Computing Platforms, Cascading Style Sheets (CSS), Mobile Application Development, Software as a Service, Software Quality, Code Review, Relational Databases, Design of User Interfaces, PostgreSQL, Node.Js, Performance Tuning, RabbitMQ, Software Engineering, TypeScript, ReactJS, Caching, Backend, Material UI, Graphql, React Native, Front End Software Development, Restful APIs, Docker - **Published:** May 27, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=14f43abe95393fdb ## About the Role Do you have experience in UI implementation?, Candidates must be legally authorized to work in the United States on a permanent basis. Applicants requiring visa sponsorship cannot be considered., * 7+ years of software engineering experience * Strong recent experience with React and TypeScript- You have led and taken ownership of complex React applications, not just contributed as part of a larger team. * Deep understanding of modern React concepts including: + Hooks, Suspense, Code splitting, Lazy loading, Performance optimization * Strong experience with frontend state management and caching strategies * Experience modernizing and scaling production applications * Solid understanding of responsive UI development and modern CSS * Experience building accessible and polished user interfaces * Full-stack development experience including backend development with Node.js or similar technologies * Experience working with relational databases such as PostgreSQL * Strong communication and collaboration skills * Ability to work independently within a small agile team * Business-level English communication skills, * Experience with GraphQL (Apollo, urql, etc.) or tRPC * Experience with Bun, Hono, or modern JavaScript runtimes/frameworks * Familiarity with RabbitMQ, Meilisearch, or vector databases * Experience with Docker and Kubernetes * Experience building or maintaining design systems/component libraries * Familiarity with TipTap or ProseMirror * React Native or mobile development experience * Experience working on SaaS, B2B, or ticketing/support platforms * Japanese language skills are a plus ## Description This is a unique opportunity to join a small, collaborative product team where your work directly impacts customers and product direction. The team works closely with global counterparts and values ownership, technical excellence, and thoughtful product development., We are looking for a Senior Full-Stack Engineer with strong frontend expertise to help build and scale a modern SaaS platform. This is a full-stack role with a strong emphasis on React + TypeScript frontend development, while also contributing to backend APIs and platform architecture as needed. You will collaborate closely with engineering, product, and leadership teams to deliver scalable, high-quality user experiences and technical solutions., * Modernize and scale a React + TypeScript application while improving architecture and code quality * Build and expand a reusable UI component library using MUI * Design and improve frontend state management and data-fetching architecture * Drive frontend performance improvements including code splitting, lazy loading, caching, and optimization * Develop responsive and polished user experiences across devices and screen sizes * Deliver full-stack features from backend APIs through frontend implementation * Improve and maintain backend services including REST APIs, GraphQL APIs, background workers, and scheduled jobs * Establish engineering best practices, code review standards, and scalable development patterns * Collaborate closely with cross-functional and international teams ## Related Videos - [The Pragmatic Architect: Balancing Necessity vs. Sufficiency in React Systems](https://www.wearedevelopers.com/videos/2101-the-pragmatic-architect-balancing-necessity-vs-sufficiency-in-react-systems) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [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) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [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) - [GraphQL + Apollo + Next.js: A Lovely Trio](https://www.wearedevelopers.com/videos/311-graphql-apollo-next-js-a-lovely-trio) ## Related Articles - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Dev Digest 131 - AI'm not sure about OSS](https://www.wearedevelopers.com/magazine/472-dev-digest-131-ai-m-not-sure-about-oss) - [The Best 7 Frontend Frameworks for Developers in 2025](https://www.wearedevelopers.com/magazine/400-the-best-7-frontend-frameworks-for-developers-in-2025)