Senior Full-Stack Engineer (React and Node.Js)

Title: Senior Full-Stack Engineer (React and Node.Js)

Location: Onsite in CA (all 5 days in office)

Only for W2 / Full-Time candidates

Responsibilities
The UI architecture component library, design system, and the standards that govern how we build interfaces across the platform.
Front-end performance code splitting, caching strategies, accessibility (WCAG), and
cross-browser reliability.
API development designing and writing back-end APIs that power the front-end, with a strong sense of what makes an API clean and efficient to consume.
Data and storage working with databases and storage technologies; understanding
schemas, querying patterns, and how data architecture decisions affect the product
experience.
Full-stack integration owning the full request lifecycle, from UI interaction to API layer to data persistence and back.
Test coverage unit, integration, and functional tests that keep the codebase reliable as it scales.
Engineering culture code reviews, mentoring junior and mid-level engineers, and helping define the standards we hold ourselves to.
Technical Stack
- Core Front-End: React , Next.js (App Router),TypeScript
- Styling: Tailwind CSS, Emotion, CSS Modules, PostCSS
- Back-End Framework: NestJS on Node.js / Express APIs & Messaging REST + OpenAPI/Swagger (Scalar), Kafka
- Data & Storage: MongoDB + Mongoose
- Build / Infra / DevOps: Docker & docker-compose, Webpack + SWC, GitHub Actions,
- AWS
What We're Looking For
Full-stack depth
Someone with 10+ years building production-grade web applications not just familiarity with the tools, but genuine mastery of the front-end. They also have real back-end experience: they've written APIs, worked with databases, and understand how the full stack fits together.
Back-end and infrastructure awareness
Comfort with Node.js, database and storage technologies, and deploying to cloud infrastructure (AWS or similar). An understanding of SSR and SSG patterns in Next.js.
Communicator and mentor
As a senior member of the team, they should be able to lead technical conversations, write clearly, and help grow the people around them.

Build / Infra / DevOps Docker & docker-compose, Webpack + SWC, GitHub Actions, AWS