Junior Full Stack SaaS Engineer

About the Role

We are looking for a highly motivated Junior Full Stack SaaS Engineer to architect, build, and scale contemporary SaaS platforms from the ground up.
This role is for someone who has hands-on experience building complete SaaS products—not just isolated frontend or backend features. The ideal candidate understands how to design and ship scalable, production-grade applications across the full stack, including:
- frontend systems,
- backend APIs,
- databases,
- authentication,
- billing,
- infrastructure,
- deployment pipelines,
- and multi-tenant SaaS architecture.

You will work closely with product, design, AI, and infrastructure teams to build reliable and scalable software products used in production environments.

Responsibilities

Full Stack Product Development
- Design and develop end-to-end SaaS applications from scratch
- Build responsive and scalable frontend applications
- Develop secure backend APIs and microservices
- Implement authentication, authorization, RBAC, and user management systems
- Build billing, subscription,



and usage-based systems
- Develop dashboards, admin panels, and workflow management systems

Backend & API Engineering
- Design scalable backend architecture and APIs
- Build high-performance REST and/or GraphQL services
- Implement asynchronous systems, queues, caching, and background jobs
- Optimize application performance, reliability, and scalability
- Integrate third-party APIs and services

Database Engineering
- Design and manage scalable database systems
- Work extensively with:
- PostgreSQL
- MongoDB
- MySQL
- SQL-based systems
- Design schemas, indexing strategies, query optimization, and data models
- Build systems for high availability, backups, migrations, and scaling

Infrastructure & Deployment
- Deploy and manage applications across cloud environments
- Work with:
- Docker
- CI/CD pipelines
- cloud infrastructure
- containerized deployments
- Build scalable production environments

📌 Junior Full Stack Engineer (Kolkata)
🏢 Qubrid AI
📍 Kolkata