Lead Java Engineer

Work Schedule Standard (Mon-Fri) Environmental Conditions Office Job Description As part of the Thermo Fisher Scientific team, you’ll discover meaningful work that makes a positive impact on a global scale. Join our colleagues in bringing our Mission to life every single day to enable our customers to make the world healthier, cleaner and safer. We provide our global teams with the resources needed to achieve individual career goals while helping to take science a step beyond by developing solutions for some of the world’s toughest challenges, like protecting the environment, making sure our food is safe or helping find cures for cancer. DESCRIPTION: Join Thermo Fisher Scientific, the world leader in serving science, as a Staff Engineer, Software to make a meaningful impact. In this role, you will provide technical leadership and architectural guidance while developing innovative software solutions that enable our customers to make the world healthier, cleaner, and safer. Working in a supportive, multi-functional environment, you will design and implement sophisticated solutions across our product portfolio, from cloud platforms to scientific instrumentation. You will support the growth of other engineers, drive adoption of best practices, and help shape the technical direction of critical projects. This position offers the opportunity to work with advanced technologies while contributing to groundbreaking scientific discoveries.

Overview We are looking for a highly experienced Lead Java Engineer with 12–15 years of software development experience and strong expertise in designing and developing scalable, secure, and high-performance backend systems. The ideal candidate should have deep hands-on experience with Java, Spring Boot, REST API development, database design, and backend integration . The candidate will be responsible for designing robust backend solutions, developing enterprise-grade services, integrating with internal and external systems, and providing technical leadership to engineering teams.

Design, develop, and maintain scalable backend applications and services using Java and Spring Boot . Define and drive backend design principles, coding standards, and engineering best practices. Design and develop secure, reliable, and well-structured RESTful APIs . Define API contracts, request/response models, error-handling mechanisms, and versioning strategies. Design efficient and scalable relational and/or NoSQL database models . Develop and optimize database queries, indexing strategies, and data-access layers. Integrate backend applications with databases, third-party services, enterprise platforms, and external systems. Design and implement backend integration patterns for reliable data exchange across systems. Develop reusable backend components, libraries, and common services. Ensure backend systems meet requirements for performance, scalability, availability, security, and maintainability . Identify and resolve complex application, API, database, and integration-related issues. Conduct code reviews and ensure adherence to software engineering and secure coding standards. Collaborate with frontend developers, technical leads, product owners, QA engineers, DevOps teams, and other stakeholders. Participate in technical design discussions, solution reviews, estimation, and implementation planning. Mentor and provide technical guidance to backend developers. Drive improvements in automated testing, build processes, CI/CD, deployment, and observability practices. Required Technical Skills 12–15 years of overall software development experience , with significant experience in backend application development. Strong hands-on expertise in Java and object-oriented programming. Strong experience with Spring Boot and the broader Spring ecosystem. Strong experience in designing and developing RESTful APIs and backend services . Good understanding of API design principles, HTTP standards,