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 with monitoring and observability
Collaborate with DevOps and infrast

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