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 modern 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 infrastructure teams on deployment strategies

Engineering & Product Ownership
- Write clean, maintainable, and production-grade code
- Participate in architecture and technical design discussions
- Write technical documentation and implementation plans
- Review code and maintain engineering best practices
- Collaborate cross-functionally to ship features quickly and reliably

Requirements

Must-Have
- Strong hands-on experience building SaaS platforms or full-stack applications
- Strong full stack engineering experience across frontend and backend systems
- Strong experience with databases including PostgreSQL, MongoDB, MySQL, and SQL systems
- Experience with scalable multi-tenant SaaS architectures
- Solid understanding of APIs, authentication systems, and application security
- Experience deploying and maintaining production systems in cloud environments
- Strong JavaScript/TypeScript and Python backend engineering skills

Preferred




- Experience with modern frontend frameworks such as React or Next.js
- Experience with Node.js, Python, or Go backend systems
- Familiarity with AI integrations and API-based AI products
- Experience with Redis, queues, caching systems, and event-driven architectures
- Familiarity with Kubernetes and distributed systems
- Startup or high-growth product experience

What We’re Looking For
- Someone who has built real SaaS products used by customers
- Strong product and systems-thinking mindset
- Ability to move quickly while maintaining engineering quality
- Ownership mentality with strong execution skills
- Someone comfortable working across the full stack without heavy supervision
- Must be a coder, not just a user or project manager

CompensationCompetitive salary depending on experience and current verifiable (paychecks) compensation.

To apply, please include:

- Relevant SaaS products or platforms built
- GitHub, portfolio, or technical project links
- Technologies and frameworks worked with
- Brief description of systems you have architected or scaled

Company DescriptionHeadquartered in McLean, Virginia, USA, Qubrid is a global provider of Artificial Intelligence (AI), Data Center and IoT products, solutions, and services. As pioneers in the realm of advanced computing technologies, we pride ourselves on being at the forefront of innovation, empowering businesses with the transformative capabilities of GPUs, Artificial Intelligence, Quantum Computing, IoT and more. We specialize in offering a wide array of hardware and software solutions for industries such as healthcare, manufacturing, finance, government, education and more.

📌 Junior Full Stack Engineer (Hands-On Coder) - WFH (Kolkata)
🏢 Qubrid AI
📍 Kolkata