Backend Developer – Lead | Onsite | Chennai

Lead Backend Engineer | SRM Tech | Onsite | Chennai

About SRM Tech

SRM Technologies is a global digital and engineering partner delivering capabilities across data and AI, enterprise platforms, embedded and platform engineering, supply chain, and design-to-manufacturing services.

We work across high-impact industries such as Mobility, Life Sciences, Healthcare, and Logistics, supporting enterprises across North America, APAC, and Europe in building intelligent, future-ready ecosystems and driving transformation at scale.

As a Great Place to Work®-certified organization, we are committed to creating an environment where people can learn, grow, and thrive. We believe empowered individuals drive innovation, deliver value to customers, and play a meaningful role in shaping our collective success.

At SRM Tech, every contribution matters, and we are always looking for passionate individuals who are eager to shape their careers with us.

Work Mode: Onsite/ 5 days WFO

Work Location : Chennai

Preferred Experience: 15 - 18 years

About the Role:

We are hiring a Lead Backend Engineer with 15+ 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.

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 NoSQLdatastore
• Deep understanding of:
• Backend architecture patterns
• Design patterns (GoF, SOLID, DDD concepts)
• Distributed systems fundamentals

Additional qualifications

• Experience designing and evolving large-scale systems
• Practical experience with cloud services and deployments
• Proven ability to lead technical decisions and architecture discussions
• 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

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 architectures
• 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

• Design and optimizeschemas in RDBMS (PostgreSQL/MySQL)
• Indexing, query optimization, transactions, isolation levels
• Design data modelsfor 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

• Work in cloud environments (AWS / Azure / GCP)
• Containerize services using Docker
• Deploy using CI/CDpipelines
• 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

SRM Tech is an equal opportunity employer committed to diversity, equity, inclusion, and belonging. We make all hiring decisions based on merit, without bias or discrimination, in line with applicable laws.