Senior Full Stack Engineer

Location: Remote, India

Employment Type: Freelancer

Experience: 5–8+ Years

About the Role

We are building a next-generation AI-powered HR-Tech platform that will transform recruitment, talent acquisition, candidate management, and online technical assessments. We are looking for a passionate Full Stack Engineer who enjoys building scalable SaaS applications using up-to-date technologies and cloud-native architecture.

You will work alongside product, AI, UI/UX, and DevOps teams to build secure, high-performance web and mobile solutions used by recruiters, enterprises, staffing firms, and job seekers.

Responsibilities

- Design and develop scalable SaaS applications using modern full-stack technologies.
- Build responsive web applications and reusable UI components.
- Develop secure backend APIs and business logic.
- Design relational database architecture and optimize queries.
- Integrate AI services and third-party APIs.
- Develop authentication and authorization systems.
- Build search and recommendation capabilities.
- Develop asynchronous background jobs and event-driven workflows.
- Implement CI/CD pipelines and deployment automation.
- Optimize application performance, scalability, and security.
- Participate in sprint planning, code reviews, and Agile ceremonies.
- Collaborate with UI/UX designers and Product Managers.
- Write unit, integration, and end-to-end tests.
- Troubleshoot production issues and improve system reliability.

Required Technical Skills

Frontend

- React.js
- Next.js
- TypeScript




- JavaScript (ES6+)
- Tailwind CSS
- HTML5
- CSS3
- Responsive Web Design
- REST API Integration
- shadcn/ui
- Component-based architecture

Backend

- Next.js Route Handlers
- Server Actions
- Node.js
- TypeScript
- REST APIs
- Webhooks
- Serverless Architecture
- Background Jobs
- API Security

Database

- PostgreSQL
- Drizzle ORM
- Database Design
- Query Optimization
- Data Modeling

Search & AI Experience working with one or more of:

- OpenAI APIs
- Vector Search
- pgvector
- Semantic Search
- Embeddings
- AI Prompt Engineering
- AI-powered Data Processing
- Retrieval-Augmented Generation (RAG)

Authentication & Security

- JWT Authentication
- OAuth 2.0
- Google OAuth
- LinkedIn OAuth
- Role-Based Access Control (RBAC)
- Secure Password Hashing
- Refresh Tokens
- HttpOnly Cookies
- API Security Best Practices

Cloud & DevOps

- Vercel
- GitHub Actions
- CI/CD Pipelines
- Docker (Preferred)
- Redis
- Upstash
- Cloud Storage (Google Cloud Storage / AWS S3)
- Environment Management

Testing

- Vitest
- Jest
- Playwright
- API Testing
- Unit Testing
- Integration Testing
- End-to-End Testing

Mobile (Preferred)

Experience with

- React Native
- Expo
- Expo Router
- EAS Build

Monitoring & Performance

- OpenTelemetry
- Sentry
- SigNoz
- Application Monitoring
- Performance Optimization
- Logging & Error Tracking

Development Practices

- Git
- Agile/Scrum
- Sprint Planning
- Code Reviews
- Technical Documentation
- Design Patterns
- Clean Architecture
- SOLID Principles

📌 AI Full Stack Development (India)
🏢 Aptivision Technologies
📍 India