EJ 1516 Senior Full Stack Developer

Role Summary

Softobiz is looking for a Senior MERN Stack Developer to join the engineering team. You will be responsible for designing and delivering end-to-end features across our Node.js backend and React frontend, taking ownership from API design through to UI delivery. This role is being hired to backfill a departing team member, so the ideal candidate can ramp up quickly and take over an existing area of the codebase with minimal disruption to delivery. AI-based development is central to how the engineering team works. We are specifically looking for someone well versed in AI-assisted development - comfortable using AI coding assistants as part of their daily workflow to design, build, test, and ship features faster and with higher quality.

Key Responsibilities

Backend Development

• Design and implement RESTful APIs using Node.js and Express, with clean, well-tested, maintainable code.
• Model data and optimize MongoDB queries for large data volumes, keeping performance and scalability in mind.
• Integrate with third-party services and internal systems, handling authentication, validation, and error management. Frontend Development
• Build and maintain complex front-end applications using React, including state management, component testing, and performance tuning.
• Collaborate closely with product management, design, and QA to define requirements and deliver high-quality features.

AI-Assisted Development

• Use AI coding assistants (Claude Code, GitHub Copilot, Cursor, or similar) as a core part of the daily development workflow - for code generation, refactoring, review, and test creation.
• Apply AI-assisted approaches to accelerate feature delivery without compromising code quality or test coverage.
• Share learnings and best practices on AI-assisted development with the wider team.

Quality, Delivery & Operations

• Drive best practices in code quality, testing, and CI/CD across the codebase.
• Troubleshoot production issues and lead performance optimization efforts.
• Take end-to-end ownership of features, ensuring consistency and reliability across the full stack.

Required Technical Skills

Domain Skills & Technologies

JavaScript, TypeScript, SQL Must

Backend Node.js, Express.js, RESTful API design, Webhook integrations Must

Frontend React 18, Redux / Context API, HTML5, CSS3 Must

Database MongoDB - data modeling and query optimization for large data volumes Must

Testing Jest, React Testing Library (or similar) - unit, integration, and end-to-end testing Must

DevOps / CI-CD Git, GitHub Actions (or equivalent), CI/CD pipeline management Must

AI-Assisted Development - Daily, hands-on use of AI coding assistants (Claude Code, GitHub Copilot, Cursor) for code generation, review, and testing - primary hiring criterion for this role Must

Preferred:

Auth & Security OAuth, JWT, session management

Cloud Platforms AWS, GCP, or Azure - deployment, scaling, infrastructure management

API & Architecture Patterns Container Orchestration GraphQL, microservices, serverless architectures

Docker

Experience building AI agents or LLM-powered AI Agent Development features (e.g., agentic workflows, RAG, tool Preferred calling)

Qualifications & Certifications

• Bachelor's degree in Computer Science, Information Technology, Software Engineering, or equivalent practical experience.
• 6-9 years of professional, hands-on full stack development experience with Node.js, React, and MongoDB (MERN) in production environments. • Demonstrated, hands-on experience with AI-assisted development tools and workflows in real projects - mandatory, not just casual/occasional use. • Deep understanding of REST API design, microservices, and scalability patterns. • Strong testing skills (unit, integration, end-to-end) using Jest, React Testing Library, or similar. • Familiarity with cloud platforms (AWS, GCP, or Azure) and CI/CD pipelines.

Soft Skills & Cultural Fit

• Excellent written and verbal communication skills, with effective cross-functional collaboration.
• Comfortable working independently during IST hours while collaborating with international clients and team members across time zones.
• High sense of ownership - able to pick up an existing codebase quickly and take it forward with minimal hand-holding.
• Curious, growth-oriented mindset, with genuine enthusiasm for AI-assisted engineering practices. Confidential 3 PEOPLE & DELIVERY

What We Offer

• Opportunity to work on real-world product engineering platform.
• A team culture built around AI-first development - access to modern AI coding tools and workflows from day one.
• Collaborative, technically strong team with a culture of code quality and continuous improvement.
• Competitive compensation and professional development support.