Backend - Software Engineer

Paytm’s interview process typically starts with a timed online coding test focusing on data structures, algorithms, and SQL. Successful candidates move to a technical interview that probes deep into system design, micro‑service architecture, and practical usage of AI coding assistants. The final HR round assesses cultural fit, communication skills, and discusses compensation. Preparation should include solving medium‑hard coding problems and reviewing Paytm’s tech stack.

Paytm promotes a fast‑paced, performance‑driven environment where engineers are encouraged to own end‑to‑end solutions. The company offers ample learning resources, mentorship, and a clear path for vertical growth, while maintaining a flexible work‑life balance through hybrid models.

B.Tech / B.E. / M.Tech in Computer Science, Information Technology, Electronics & Communication or related streams; Minimum 60% aggregate (or CGPA 6.5/10); Fresh graduates of 2025‑2027 batches; No active backlogs at the time of joining; Strong fundamentals in data structures, algorithms, and system design.

Round 1: Online coding test (DSA & SQL) → Round 2: Technical interview (system design, backend concepts, AI tool usage) → Round 3: HR interview (fit, culture, compensation)

Paytm is India’s largest digital payments and financial services platform, powering millions of merchants and consumers across the country. Founded in 2010, the company has grown into a super‑app ecosystem that includes payments, banking, lending, wealth, and commerce. With over 500 million registered users and more than 21 million merchants, Paytm’s technology backbone handles massive transaction volumes and is constantly evolving to meet the demands of a hyper‑connected market. The organization places a strong emphasis on building scalable, resilient systems and encourages engineers to experiment with emerging AI tools to accelerate innovation. The Backend – Software Engineer role is designed for fresh graduates who are passionate about building high‑throughput, low‑latency services that serve millions of users daily. As a member of the backend team, you will design, develop, and optimise micro‑services that process upwards of 120 million transactions per day. You will work closely with product managers, data engineers, and site reliability engineers to ensure that the services you build are reliable, performant, and secure. The role also offers the opportunity to integrate AI‑driven coding assistants such as GPT, Copilot, or OpenHands into your daily workflow, helping you write cleaner code faster. Key responsibilities: 1. Design and implement micro‑services using Java (or Node.js) that handle high transaction volumes. 2. Develop APIs and integrate them with front‑end applications and third‑party partners. 3. Optimise database queries and data models in PostgreSQL, MySQL, or Cassandra for low latency. 4. Implement caching strategies using Redis or Aerospike to improve response times. 5. Build and maintain messaging pipelines with Kafka and RabbitMQ for real‑time data flow. 6. Participate in code reviews, write unit and integration tests, and ensure code quality. 7. Monitor services using ElasticSearch, Kibana, and Grafana, and troubleshoot performance bottlenecks. 8. Collaborate with the SRE team to achieve five‑9s availability and sub‑100 ms latency. 9. Leverage AI tools to automate repetitive tasks, generate code snippets, and improve debugging efficiency. 10. Contribute to architectural discussions and help evolve the platform’s cloud‑native design on AWS. Tech stack: Java, Node.js, Spring Boot, PostgreSQL/MySQL/Cassandra, Redis, Kafka, RabbitMQ, AWS, Docker, Kubernetes, ElasticSearch, Kibana, Grafana, AI‑assisted coding tools. Growth path: Starting as a junior backend engineer, you can progress to senior engineer, tech lead, and eventually architect roles, with opportunities to lead large‑scale projects and influence product strategy. Why join Paytm? You will work on systems that impact hundreds of millions of users, gain exposure to cutting‑edge cloud and AI technologies, and be part of a culture that values deep technical expertise and continuous learning. The company offers competitive compensation, stock options, and a clear career roadmap for high‑performing engineers.