💼 Full-Time Position

Principal Software Engineer

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Opus Resourcing Ltd
📍 cambridge, england, United-Kingdom
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Location
cambridge, United-Kingdom
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Posted
June 20, 2026
Type
Full-Time
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Full-Time Opportunity: This is a permanent, full-time position with a competitive package and real career growth potential.

Job Description

Principal Software Engineer with strong Java, Spring Boot or Micronaut experience is required to join an early-stage green energy technology start-up building advanced SaaS and data platform products for the renewable energy sector. You’ll take a leading role in the design, architecture, delivery and support of a new microservices-based SaaS product, working across scalable distributed systems, cloud-native engineering, DevOps, Continuous Delivery, test automation and ideally some frontend development with React / MUI. This role will suit someone from a small, scale-up or product-focused SaaS software business who enjoys hands-on engineering, technical leadership and building resilient, maintainable software with real-world impact.

The role is potentially remote, although candidates should be accessible to the central Cambridge office, which would be an advantage. Salary £80-110k + Bens + Stock

Key skills required for the Principal Software Engineer