Backend Technical Lead (Must have : Python, Fast API, Rest API, PostgreSQL/MySQL, MongoDB)

10+

Chennai only

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

 Select and apply appropriate architecture patterns:

 Modular monoliths

 Microservices

 Event-driven systems

 Layered and hexagonal architecture

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

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

Design and optimize schemas in RDBMS (PostgreSQL/MySQL) Indexing,

query optimization, transactions, isolation levels

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

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

Handle migrations, versioning, and backward compatibility

Distributed Systems

Design systems that handle: Partial failures

Retries, timeouts, and idempotency

Horizontal scaling

Experience with message brokers and async communication (Kafka,

RabbitMQ, SQS, etc.)

Understand consistency models, eventual consistency, and data replication

DevOps & Cloud (Hands-on but not DevOps-only)

• Work in cloud environments (AWS / Azure / GCP)

• Containerize services using Docker

• Deploy using CI/CD pipelines

• Understand Kubernetes concepts (pods, services, autoscaling) or managed

alternatives

• Collaborate with DevOps/SRE on observability, logging, and monitoring

Technical Leadership

• Act as technical owner for backend systems

• Mentor senior and mid-level engineers

• Set engineering standards and best practices

• Work closely with product and business stakeholders to translate requirements

into technical designs

Required Qualifications

• 10+ years of backend/software engineering experience

• 3+ years of production experience with FastAPI

• Expert-level Python knowledge

• Strong experience with: Relational databases (PostgreSQL/MySQL)

• At least one NoSQL datastore

• Deep understanding of: Backend architecture patterns

• Design patterns (GoF, SOLID, DDD concepts)

• Distributed systems fundamentals

• Experience designing and evolving large-scale systems

• Practical experience with cloud services and deployments

• Proven ability to lead technical decisions and architecture discussions

Nice-to-Have

• Experience migrating monoliths to microservices (or deciding not to)

• Event-driven or streaming systems experience

• API gateways, rate limiting, auth systems (OAuth2, JWT)

• Prior experience acting as Senior Backend Developer, Tech Lead or Solution

Architect