Software Engineer 3

The Application Modernization Platform (AMP) team is dedicated to solving one of the industry's biggest challenges: transforming rigid, legacy applications that suffer from poor scalability and high operating costs into modern, microservices-based architectures on MongoDB. To accelerate this transition, MongoDB is building a dedicated Platform and Infrastructure team to develop the Application Modernisation Platform and Infrastructure . As we help customers modernize their application and data ecosystems, we face the challenge of deploying complex tooling into highly restrictive client environments and architecting automated verification frameworks to ensure data equivalence. This new team will architect the platform foundation and infrastructure that enables a "build once, run anywhere" model, ensuring our AI-powered modernisation suite operates seamlessly regardless of a client's security or network constraints. We are looking for engineers to join this high-visibility initiative, where you will solve unique distributed systems puzzles and help shape the future of how global enterprises leverage data and AI. We are looking for an experienced Software Engineer who thrives on solving infrastructure constraints and building developer-centric modernisation platforms with a strong background in building software testkits/frameworks. The ideal candidate will be designing and building automated frameworks that validate functional equivalence, performance benchmarks, and data integrity. From leveraging LLMs for unit test generation to building contract testing frameworks, your work will be the safety net for the world’s largest enterprise migrations. This role will be based in our India office in Gurgaon and offers a hybrid working model. Position Expectations • Contribute high-quality, well-tested code to the modernization and framework team and its surrounding services • Collaborate effectively with Product Management, other engineers, and designers to build and deliver on the product roadmap • Participate actively in code reviews to enforce best practices and patterns • Help troubleshoot and resolve complex technical issues in our distributed systems • Give and solicit feedback on technical design documents and pull requests • Perform tasks related to process such as CI/CD, quality, testing, etc Success Measures Within the first three months, you will have: • Familiarize yourself with the MongoDB Modernization Infrastructure & Frameworks stack • Set up software development infrastructure (tech stack, build tools, etc) to enable development using the relevant tech stacks • Started collaborating with your peers and contributed to code reviews and design reviews Within six months, you will have: • Familiarised yourself with the rest of our the application modernization tool stack • Delivered at least one large scale feature that spans the entire tech stack • Reviewed and contributed to scope and technical design documents Within 12 months, you will have: • Become a key contributor to our stack, capable of taking on complex features independently • Helped recruit and interview new members of the team • Collaborated effectively with other teams at MongoDB on cross-functional projects The ideal candidate for this role will have • 4 years of commercial software development experience with at least one JVM language such as Java, preferably using the Spring ecosystem • Expertise integrating Large Language Models (LLMs) into the developer workflow to automate unit test generation and edge-case discovery • Experience building developer tools, infrastructure, or complex testing frameworks • Solid experience in software architecture and development • Deep expertise in application/database modernization with proven ability to design and implement frameworks that ensure database state equivalence across different implementations Must understand change data capture, event-driven database interception (MongoDB…