Senior Backend Engineer

Unico Connect LLP.; Mumbai; On-site; INR 1,500,000 - 2,500,000; Full time

Job summary

Unico Connect LLP. is looking for a Senior Backend Engineer to architect and deliver production backends for enterprise products. The role focuses on system design, data ownership, and mentoring junior engineers.

Applicants should have more than 5 years of experience, with strong capabilities in Node.js and Python, as well as multiple database experiences. This position involves leading architecture for enterprise projects and emphasizes mentorship and code quality.

Qualifications

• 5+ years of backend engineering with at least 2 years in a senior or lead role.
• Deep expertise in Node.js with TypeScript or Python at production scale.
• Production experience across multiple databases.

Responsibilities

• Lead backend architecture for enterprise client products.
• Design event-driven and microservice systems.
• Own the data layer including schema design and optimization.

Skills

Node.js with TypeScript

Python (FastAPI or Django)

PostgreSQL

MySQL

MongoDB

Kubernetes

Docker

CI/CD on GCP or AWS

Distributed systems

Mentorship

Education

Bachelor's degree in Computer Science, Engineering, or a related field

Job description

Unico Connect is seeking a Senior Backend Engineer to architect and deliver production backends for enterprise client products. The role spans system design, data-layer ownership, performance engineering, and the mentorship that scales the backend practice. The position is well suited to senior engineers with multi-database production experience, strong distributed systems instincts, and a track record of mentoring junior engineers through complex change.

Responsibilities

• Lead backend architecture for 1-2 enterprise client products
• Design event-driven and microservice systems where the trade-offs pay off; keep simpler architectures where they do not
• Own the data layer: schema design, query optimisation, indexing strategy, and caching architecture
• Implement complex business logic, workflows, and integrations spanning multiple services
• Mentor 2-3 junior backend engineers through code reviews, design reviews, and 1:1s
• Drive backend standards covering testing, observability, security, and performance
• Partner with DevOps on deployment, scaling, and on-call practices
• Lead production incident response for backend systems including post-mortems and remediation
• Govern security posture across owned services including OWASP, SAST, and DAST practices
• Author internal backend playbooks and onboarding documentation
• Calibrate the backend interview bar and conduct senior interview loops

Qualifications

• 5+ years of backend engineering with at least 2 in a senior or lead role
• Deep expertise in Node.js with TypeScript or Python (FastAPI or Django) at production scale
• Production experience across multiple databases (PostgreSQL, MySQL, MongoDB)
• Strong fundamentals in distributed systems, caching, queues, and async patterns
• Hands-on with Kubernetes, Docker, and CI/CD on GCP or AWS
• Excellent code review and mentorship skills
• Experience leading architecture decisions in regulated industries (SOC 2, HIPAA, GDPR)
• Track record of owning at least 1 system at production scale (high QPS, multi-tenant, or compliance-heavy)
• Capacity to read product requirements and translate to technical scope
• Bachelor's degree in Computer Science, Engineering, or a related field