Senior Full-Stack JavaScript Developer (Next.js & NestJS)

Role Overview

We are seeking a seasoned Senior Full-Stack JavaScript Developer with over 5 years of professional experience to join our engineering team. You will lead the development of complex, mission-critical web applications, leveraging Next.js for high-performance frontends and NestJS for robust, enterprise-grade backends. As a senior member of the team, you will be expected to make high-level architectural decisions and mentor junior developers.

Key Responsibilities

• Architectural Leadership: Lead the design and implementation of end-to-end features, ensuring the overall system architecture is scalable, secure, and maintainable.
• Advanced Frontend Development: Build highly performant, accessible, and responsive user interfaces using Next.js (App Router, Server Components, and optimized rendering strategies).
• Enterprise Backend Design: Architect modular and testable services using NestJS, implementing complex business logic, dependency injection, and microservices where applicable.
• Database & Infrastructure: Design sophisticated database schemas, optimize complex queries, and oversee data integrity across SQL/NoSQL environments.
• Code Excellence & Mentorship: Conduct rigorous code reviews, establish engineering best practices, and mentor junior and mid-level developers to foster technical growth.
• Strategic Collaboration: Partner with stakeholders and product owners to translate business goals into technical roadmaps and architectural designs.
• Security & Reliability: Implement advanced security protocols (OAuth, JWT, Rate Limiting) and comprehensive testing suites (Unit, Integration, E2E).

Technical Requirements

Core Languages - JavaScript (ES6+), TypeScript (Expert Level)

Frontend - Next.js, React, Tailwind CSS, State Management (Zustand, Redux, or Context API)

Backend - NestJS, Node.js, TypeORM / Prisma, Microservices, Event-driven architecture

Databases - PostgreSQL, MySQL, or MongoDB; Advanced Redis usage

APIs - RESTful APIs, GraphQL, WebSockets, gRPC

DevOps & Tools - Git, Docker, Kubernetes, CI/CD, AWS/Vercel/Azure

Qualifications

• Experience: 5+ years of professional software development experience, with a significant focus on full-stack JavaScript/TypeScript environments.
• Expertise: Deep, demonstrable experience shipping production-grade applications using Next.js and NestJS.
• System Design: Proven ability to design distributed systems and manage complex data flows between the client and server.
• Problem Solving: Experience solving "at-scale" challenges, such as performance bottlenecks, memory leaks, and high-concurrency issues.
• Education: Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field (or equivalent senior-level industry experience).