Note: The job is a remote job and is open to candidates in USA. Avenue Code is a consultancy company seeking a Senior Full Stack Engineer with a focus on back-end development. This role involves designing and building scalable back-end APIs, managing database architectures, and contributing to full-stack integrations while mentoring junior engineers.
Responsibilities
- System Architecture & API Development — Designing, building, and scaling robust, efficient back-end APIs that power our front-end, with a strong sense of what makes an API clean, secure, and performant
- Data & Storage — Owning database schemas, querying patterns, and storage strategies; understanding how data architecture decisions directly affect the product experience and system scalability
- Full-Stack Integration — Owning the full request lifecycle, from data persistence and messaging layers up to the API and UI interaction
- Back-End Performance & Security — Implementing caching strategies, optimizing database queries, managing asynchronous events/messaging, and ensuring robust authentication/authorization
- Front-End Contribution — Writing clean, maintainable code within our React/Next.js ecosystem to consume APIs and deliver cohesive user experiences
- Test Coverage — Writing comprehensive unit, integration, and functional tests (focusing heavily on API and database reliability) that keep the codebase stable as it scales
- Engineering Culture — Leading code reviews, mentoring junior and mid-level engineers, and helping define the engineering standards we hold ourselves to
Skills
- Back-End Framework & Messaging: NestJS on Node.js / Express, REST + OpenAPI/Swagger (Scalar), Kafka, Typescript
- Data & Storage: MongoDB + Mongoose (migrations via ts-migrate-mongoose), AWS S3
- Auth & Integrations: NextAuth, JWT, Stripe, Persona
- Build / Infra / DevOps: Docker & docker-compose, GitHub Actions, AWS
- Core Front-End: React, Next.js (App Router), TypeScript
- Client State & Data: TanStack React Query, Zustand, Immer
- Styling: Tailwind CSS, Emotion, CSS Modules, PostCSS
- Observability: PostHog, Winston
- I18n: next-intl, i18next / react-i18next, Ditto
- Testing: API: Vitest, Supertest, mongodb-memory-server
- Web: Jest, React Testing Library, Storybook
- Code Quality: ESLint 9, Prettier, Husky, lint-staged, Knip, Code Coverage
Company Overview
Avenue Code is an IT consulting firm that specializes on Agile ecommerce software development. It was founded in 2008, and is headquartered in San Francisco, California, USA, with a workforce of 1001-5000 employees. Its website is http://www.avenuecode.com.Company H1B Sponsorship
Avenue Code has a track record of offering H1B sponsorships, with 4 in 2026, 4 in 2025, 6 in 2024, 7 in 2023, 11 in 2022, 11 in 2021, 12 in 2020. Please note that this does not guarantee sponsorship for this specific role.