Netrin is a sports technology company building products that improve fitness, lifestyle, and performance. We're now building a D2 C product (pre-product stage) at the intersection of health data and AI. If you have strong Python and AWS fundamentals, enjoy owning backend systems end-to-end, and want to be one of the first engineers shaping something new — this could be the perfect opportunity for you.
We're looking for a Principal Engineer architecting and building the Python backend, owning the AWS infrastructure and Dev Ops, and setting the engineering bar as we grow from a stealth founding team. You'll be one of the first engineers and the technical anchor for the system — shaping the architecture, not inheriting it. The platform integrates LLM services, so comfort working alongside AI components is a plus, but the core of this role is rock-solid backend engineering and production infrastructure ownership.
RESPONSIBILITIES
• Make and document the key technical decisions, and set conventions the team builds on
• Design, build, and maintain backend APIs and services in Python (Fast API)



on AWS-based, containerised infrastructure
• Own small-scale Dev Ops and cloud infrastructure — provision and maintain compute, storage, databases, networking, and observability as code (Terraform): VPCs, ECS, S3, RDS, SQS, KMS, IAM
• Build and operate asynchronous data processing pipelines (SQS-driven workers) and LLM service APIs as backend dependencies
• Design and optimise vector data storage, Postgre SQL schemas for structured and semi-structured data
• Implement and own CI/CD pipelines for reliable, repeatable, least-privilege deployments
• Drive security and data-protection best practices — encryption, logging and least-privilege IAM
• Integrate authentication and authorization with strong RBAC integration
• Establish testing, observability, and operational standards
MUST-HAVE REQUIREMENTS
• 6–8 years of qualified backend engineering experience with Python, including a tra

📌 Principal backend engineer (Chennai)
🏢 Netrin Sports Technologies
📍 Chennai