Senior Backend Software Development Engineer - Fintech Domain

About the Role:

We are looking for a Senior Backend Software Development Engineer with strong expertise in Python, AWS and distributed systems to build and maintain a reliable, automated order execution platform for a systematic trading environment.

Key Responsibilities:Backend Engineering & Order Management:

• Design and develop scalable asynchronous backend services using Python.

• Build order management workflows covering order submission, modification, cancellation, partial fills, rejections and execution tracking.

• Implement idempotent order processing to prevent duplicate orders during retries and service interruptions.

• Integrate with broker or exchange APIs using REST, WebSocket or FIX protocols.

• Develop pre-trade risk checks, order validation, exposure limits and emergency trading controls.

Reliability, Reconciliation & Audit:

• Implement intraday and end-of-day reconciliation of orders, trades, fills and positions against broker records.

• Build reliable event-processing mechanisms with retries, backoff, failure recovery and stale-order detection.

• Maintain comprehensive audit trails for trading signals, orders, broker responses and execution events.

AWS Infrastructure & Deployment:

• Develop and deploy backend services on AWS using services such as ECS, EKS, Lambda, SQS/SNS, RDS, IAM and CloudWatch.

• Use Redis for order state, caching, messaging and distributed coordination.

• Work with PostgreSQL, ensuring data consistency, transaction integrity and robust schema design.

• Implement Infrastructure as Code using Terraform or CloudFormation.

• Build and maintain Docker-based deployment workflows and CI/CD pipelines.

Mandatory Skills:

• 5+ years of experience in backend software engineering.

• Strong hands-on expertise in Python (asyncio, FastAPI).

• Experience in fintech, brokerage, or trading technology.

• Hands-on experience integrating with broker or exchange APIs.

• Proven experience designing distributed, event-driven systems.

• Production experience with Redis and PostgreSQL.

• Strong AWS experience and Infrastructure as Code (Terraform/Docker).