Sr Backend Developer

Work Location & Policy

• Location: Bhubaneswar//Hyderabad (Onsite)
• Work Mode: 4 days from office, 1 day work-from-home
• Minimum 6 hours of on-site work required during office days
• Free meals, snacks and amenities provided daily to support employee well- being

Java Backend Developer

Key Responsibilities:

• Design and develop 

  reactive microservices

   using 

  Spring WebFlux

• Implement RESTful APIs and integrate with front-end and external systems
• Work with 

  MongoDB

   for data modeling, indexing, and aggregation pipelines
• Ensure non-blocking, asynchronous communication across services
• Collaborate closely with product managers, architects, and DevOps engineers
• Write unit and integration tests using 

  JUnit

   and 

  Mockito

• Participate in design reviews and code walkthroughs
• Identify and resolve performance bottlenecks and memory issues
• Ensure backend services are secure, scalable, and maintainable

Required Skills & Experience:

• 6–9 years of Java backend development experience
• Strong hands-on experience with 

  Spring Boot

   and 

  Spring WebFlux

• Solid experience working with 

  MongoDB

   (collections, schema design, aggregation)
• Understanding of 

  reactive programming

   principles and patterns
• Familiarity with asynchronous data flow and 

  Project Reactor

• Experience building and consuming 

  REST APIs

• Familiarity with 

  Docker

  , Git, and basic CI/CD pipelines
• Good knowledge of 

  unit testing

  , error handling, and exception management
• Strong debugging, analytical, and problem-solving skills

Preferred Qualifications:

• Exposure to 

  cloud platforms

   (AWS/GCP/Azure)
• Experience with 

  Kafka

  , RabbitMQ, or other message brokers
• Knowledge of 

  Kubernetes

   or container orchestration tools
• Prior experience in Agile development environments
• Understanding of OAuth2/JWT security models                                                         

About Nisum:

Nisum is a global technology consulting and solutions company with over 25 years of market presence. We specialize in digital transformation, software development, and IT consulting. Our clients include Fortune 500 companies across the globe. We take pride in our people-first culture and commitment to excellence, making us a trusted technology partner across industries.One distinct perk that shows Nisum’s intention to care for employees daily well-being is the provision of free meals, snacks, and related amenities.

Website Link:

Nisum | A Technology Consulting Partner

Learn how Nisum designs and builds customized eCommerce platforms to power enterprises large and small.

NB: Interview guidelines

Kindly Do Not Use HEADPHONES or EARPHONES while giving the interview.

Nisum | A Technology Consulting Partner

Learn how Nisum designs and builds customized eCommerce platforms to power enterprises large and small.

Please share your updated CV in sbehera@nisum.com