About the Position

Senior Backend Engineer

Senior (5+ Years)

Mumbai, India

Full-time, on-site

Apply for this role

Send your CV to [email protected]

Overview

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

Requirements

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

Nice to Have

GraphQL federation experience (Apollo, Hive)
Performance engineering including profiling and query optimisation
Security hardening track record
Open-source contributions to backend libraries or frameworks
Conference talks or technical writing

AI Tools Proficiency

Production engineering at Unico Connect assumes AI tools form part of the daily workflow rather than an experimental augmentation. For this role specifically:

Claude Code or Cursor as the default integrated development environment
ChatGPT or Claude for system design review and architecture decisions
AI-assisted SQL and query optimisation tooling
Perplexity for technical research during architecture work

Required Skills

Node.js / NestJS / Fastify
Python / FastAPI
PostgreSQL / MySQL / MongoDB
Redis
REST + GraphQL

We Offer

Hybrid working model - 1 day work-from-home per week
MacBook Pro and external monitor for work
Paid subscriptions to Claude, ChatGPT, and Cursor
Team events, offsites, and outings
Referral bonus when you bring in a successful hire

About the Company

What we look for at Unico Connect

Every Unico role expects the same underlying traits - regardless of department or seniority. If these resonate, apply.

AI-augmented by default

Fluent with Claude, ChatGPT, Cursor, Figma AI, or whatever is relevant to your craft. We expect AI tools in the loop, not as a novelty.
Comfortable with startup pace

Fast cycles, real ownership, low ceremony. You will not be a cog.
Driven by value creation

Output and outcomes matter more than process. You ship work that moves a metric.
Ownership mindset

You treat the codebase, the deliverable, and the client relationship as your own.
Builder energy

You joined because you want to ship amazing tech products, not warm a seat.

Ready to build the future?

Join our team of engineers and help us shape the next generation of AI-native software for clients across the globe.

Apply via email

Send your CV to [email protected]

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Senior Backend Engineer

Job description