Job Title
-
Back End Developer - Technical Lead

Location – Chennai (Onsite)

Role Summary

We are hiring a
Lead Backend Engineer
with
10+ years of experience
who will own backend architecture and system design while
remaining
deeply hands-on. This role is for someone already making architectural decisions.

You will design, build, and evolve distributed backend systems, define architectural standards, and guide teams through complex technical decisions.

Core Responsibilities

System Design & Architecture

• 
  Design end-to-end backend systems with a focus on
  scalability, resilience, and maintainability

• 
  Define service boundaries, data ownership, and communication patterns

0. 
   Select and apply
   appropriate
   architecture
   patterns
   : Modular monoliths

1. 
   Microservices

2. 
   Event-driven systems

3. 
   Layered and hexagonal architectures

5. 
   Drive trade-off decisions (performance vs cost vs complexity)

6. 
   Produce architecture diagrams, ADRs, Data Flow Diagrams and technical design documents

Backend Engineering

• 
  Design and develop high-performance backend services using
  Python and
  FastAPI

• 
  Build and
  maintain
  RESTful APIs and async services

• 
  Handle concurrency, background processing, and IO-heavy workloads

• 
  Enforce clean code, SOLID principles, and testability

• 
  Lead code reviews with a focus on correctness, performance, and long-term design

Data Engineering & Storage

0. 
   Design and
   optimize
   schemas in
   RDBMS
   (PostgreSQL/MySQL) Indexing, query optimization, transactions, isolation levels

2. 
   Design data models for
   NoSQL
   systems (MongoDB, DynamoDB, Redis, etc.)

3. 
   Choose the right data store based on access patterns and consistency needs

4. 
   Handle migrations, versioning, and backward compatibility

Distributed Systems

0. 
   Design systems that handle: Partial failures

1. 
   Retries, timeouts, and idempotency

2. 
   Horizontal scaling