Principal Software Engineer

Rocket Software • Newbury, United Kingdom, United Kingdom • Posted June 01, 2026

Location Newbury, United Kingdom
Job Type Full-time
Category other-general
Posted June 01, 2026
**It's fun to work in a company where people truly BELIEVE in what they're doing!**

**Job Description Summary:**

The Infrastructure Modernization business unit is seeking a highly experienced Principal Software Engineer to join our engineering organization and provide deep technical leadership across our COBOL development ecosystem and our Enterprise Server application replatforming products. This is a hands-on, strategic role focused on designing, building, and evolving mission‑critical infrastructure used by global enterprises running high‑volume, high‑reliability systems.

In this role, you will influence architecture across multiple product lines, guide engineering best practices, and help define the future of our platform as customers modernize decades‑old workloads into more agile, distributed and environments. You will partner closely with senior engineering leaders, product managers, and domain experts to drive innovation at scale.

**What You’...

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