Senior Staff Backend Engineer

Overview

Senior Staff Backend Engineer responsible for technical direction, implementation, and architecture of Tier-1 fulfilment optimization systems that process ecommerce orders in real time.

What you'll do

• Design scalable services for order planning, fulfilment optimization, inventory allocation, and network cost management.
• Own architecture across gRPC, Kafka, CPLEX, caching, and multi-region systems.
• Write and review production code in Kotlin and Java.
• Lead design and code reviews for latency-sensitive order flows.
• Drive resilience through circuit breakers, graceful degradation, observability, and incident prevention.
• Partner with Product, Data Science, and Operations on fulfilment optimization initiatives.
• Mentor engineers and establish reusable technical mechanisms.

What you'll need

• Experience designing and operating high-scale distributed systems with strict latency and reliability requirements.
• Strong hands-on backend coding ability in Kotlin or Java.
• Deep knowledge of system design, APIs, concurrency, data modelling, caching, messaging, gRPC, and REST.
• Experience with high-QPS, large-volume, or Tier-1 SLA systems.
• Experience with Kafka-based event-driven architectures at scale.
• Experience with multi-region systems and resilience engineering.
• Technical leadership experience setting architecture direction, aligning teams, and mentoring senior engineers.

Nice to have

• Experience in ecommerce, fulfilment, supply chain, logistics, inventory, order management, or planning systems.
• Experience with optimization systems such as CPLEX or OR-Tools.
• Experience using agentic AI development and code-review tools.
• Experience with spec-driven development and contract-first APIs.

Details

• Location: Bengaluru.
• Work model: Hybrid.