Job Information
Rocket Software Senior Software Engineer – Enterprise Modernization & COBOL Platform in Newbury, United Kingdom
It's fun to work in a company where people truly BELIEVE in what they're doing!
Job Description Summary:
We are seeking a highly capable Senior Software Engineer to join our engineering organization working across our COBOL tooling, compilers, runtime environments, and Enterprise application replatforming technologies. As a senior engineer, you will take ownership of complex areas of the product, contribute to architectural decision-making, and mentor mid-level engineers while still driving hands-on technical execution.
This role sits at the heart of our mission to modernize long-established, mission‑critical enterprise applications and to deliver stable, high-performance infrastructure relied on by global enterprises.
What You’ll Do
Technical Ownership
Lead the design and implementation of key components across our COBOL development ecosystem and mainframe application replatforming stack.
Take end-to-end ownership of complex features, including decomposition, estimation, design documentation, and production-quality implementation.
Contribute to architectural discussions, propose improvements, and influence long-term technical direction.
Engineering Excellence
Write clean, high-quality, maintainable code with strong test coverage.
Debug and resolve challenging issues involving performance, concurrency, runtime behavior, compiler flows, or cross-platform compatibility.
Improve engineering efficiency by refining build pipelines, automation, test frameworks, and development tooling.
Cross-Team Collaboration
Partner with product management to refine requirements and align technical design with customer needs.
Collaborate with QA, DevOps, and release engineering to deliver predictable, high-quality releases.
Support escalations or complex customer scenarios by deep-diving into runtime or language-level issues as needed.
Mentorship & Leadership
Provide informal mentorship and technical guidance to more junior team members.
Help establish and uphold engineering best practices across code quality, testing, and design patterns.
Participate in and sometimes lead design reviews, code reviews, and technical spikes.
.
Rocket Software Inc. is committed to creating a diverse environment and is proud to be an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. Rocket Software Inc. is also committed to compliance with all fair employment practices regarding citizenship and immigration status.
As part of our commitment to a safe and trustworthy workplace, we include background and reference checks in our hiring process.
Rocket is committed to working with and providing reasonable accommodation to individuals with physical and mental disabilities. If you need special assistance or an accommodation while seeking employment, please call: 781-577-4321 or send an email to people@rocketsoftware.com. We will make a determination on your request for reasonable accommodation on a case-by-case basis.
If you like wild growth and working with happy, enthusiastic over-achievers, you'll enjoy your career with us!
Companies around the world trust Rocket to solve their most complex business challenges by powering their critical infrastructure, business processes, and data. We help extend the value of these assets, enabling our customers to embrace the potential of cloud and mobile computing, advanced analytics, and the innovations of tomorrow. From the clothes we wear to the cars we drive, Rocket solutions power the back-end systems that thousands of brands rely on every day.
At Rocket, software is about more than just code—it’s about people. We are passionate problem-solvers, working to make a difference for others. Our foundation is built on empathy, humanity, trust, and love, and we strive to embody these core values in everything we do. Whether we’re serving our customers, partners, or fellow Rocketeers, we are committed to treating everyone with the respect and care they deserve.
Founded in 1990, Rocket Software is headquartered in Waltham, Massachusetts, and has 20 offices worldwide, bringing people and technology together to build a better future.