Back End Developer - Technical Lead

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  
  

1. Select and apply appropriate architecture patterns: Modular monoliths  
   

1. Microservices  
   

1. Event-driven systems  
   

1. Layered and hexagonal architectures  
   

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

1. 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  

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

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

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

1. Handle migrations, versioning, and backward compatibility  
   

Distributed Systems  

1. Design systems that handle: Partial failures  
   

1. Retries, timeouts, and idempotency  
   

1. Horizontal scaling