Senior BackEnd Developer (Fin-tech)

Company Description: Returns is an NSE-empanelled algo vendor building next-generation technology for algorithmic trading and data-driven investing. Founded by a Tier-1 team comprising IIT alumni and experienced traders, the company combines deep technology expertise with real-world market experience to deliver intelligent stock insights and swing trade ideas. With a portfolio analyzer in the pipeline, Returns is building a technology-led ecosystem for modern investors and traders, aligned with the applicable SEBI regulatory framework.

Role Description This is a full-time, on-site BackEnd Developer role based in Gurugram.

We're Hiring: Senior Backend Developer – FinTech / Trading

Are you a backend engineer who enjoys building high-performance, reliable systems and solving complex engineering problems

We're looking for a Senior Backend Developer to build the core infrastructure powering order placement, trade management, position tracking, broker integrations, and real-time market systems.

• Build and maintain backend services for order placement, trade management & position tracking

• Integrate with stockbroker APIs and third-party financial systems

• Build resilient systems that continue operating when external APIs are slow, unavailable, or unreliable

• Work with real-time market data and WebSocket feeds

• Design database schemas and write efficient queries using PostgreSQL & MongoDB

• Build backend services for payments, subscriptions, user onboarding & internal tools

• Design and develop scalable REST APIs, webhooks & integrations

• Debug and resolve production issues, including during live market hours

• Identify root causes and implement long-term fixes rather than temporary workarounds

• Work closely with Product, Frontend, DevOps and other engineering teams

• 5+ years of backend development experience

• Strong hands-on experience with Go (Golang)

• Strong understanding of concurrency, multithreading & distributed systems

• Strong SQL and database design skills, particularly PostgreSQL

• Experience building REST APIs, webhooks & third-party integrations

• Experience with Docker & Kubernetes

• Experience with AWS or GCP

• Strong debugging and problem-solving skills

• High ownership and ability to work effectively under pressure

• Comfortable working on systems where reliability and performance matter

• Experience in FinTech, stock broking or trading systems

• Knowledge of Indian stock markets, F&O, Futures & Options

• Experience integrating with broker APIs

• Experience working with real-time market data systems / WebSockets

• Understanding of order lifecycle, execution, positions and trading workflows

• This is a high-ownership engineering role where your work will directly impact systems used in real-time financial markets.