Full Stack Engineer

Senior Full Stack Engineer (MERN + GraphQL) – Contract Role

Location: Basaveshwara Nagar, Bangalore

Work Mode: 5 Days Work From Office (Onsite)

Contract Duration: 2 Months

Joining: Immediate / Within 15 Days Preferred

Experience: 4+ Years

Compensation: Up to ₹1.5 Lakhs per Month (Based on Interview Performance and Evaluation)

About the Role

Digi9 is hiring a Senior Full Stack Engineer for our AI-powered B2B SaaS voice automation platform.

You will be responsible for building and scaling core product modules, developing and optimizing GraphQL APIs, contributing across frontend and backend systems, and helping maintain a robust multi-tenant SaaS architecture.

Key Responsibilities

• Develop and maintain scalable applications using the MERN stack
• Design, build, and optimize GraphQL APIs
• Collaborate with product and engineering teams to deliver high-quality features
• Improve application performance, scalability, and reliability
• Participate in architecture discussions and technical decision-making
• Work on deployment, monitoring, and maintenance of production systems
• Contribute to the development of a secure and scalable multi-tenant SaaS platform
  

Must-Have Requirements

• 4+ years of professional Full Stack development experience
• Strong expertise in MongoDB, Express.js, React.js, and Node.js
• Hands-on experience with GraphQL API development and deployment
• Prior experience working on an AI-powered B2B SaaS product
• Experience with AWS or GCP cloud platforms
• Familiarity with CI/CD pipelines and Git-based workflows
• Experience working on multi-tenant SaaS architectures
• Ability to work from the Bangalore office on all working days
  

Preferred Qualifications

• Experience with microservices architecture
• Containerization experience (Docker, Kubernetes)
• Caching and performance optimization expertise
• Experience working on voice AI, conversational AI, or automation platforms
  

Application Process

Candidates who meet the above criteria and are available to join immediately or within 15 days are encouraged to apply.