Senior JVM Software Engineer

Salary: £? - ? per year

Requirements:

• We are looking for a strong senior-level software engineer with significant commercial experience in JVM technologies such as Scala or Java.
• We need experience building complex backend or distributed systems.
• We require a strong understanding of software engineering fundamentals, including concurrency, testing, design patterns, clean code principles, and CI/CD practices.
• You should be able to operate independently and take ownership of complex technical problems.
• Strong communication skills are essential.
• We need hands-on design and development experience, including the ability to explain architectural decisions and technical trade-offs.
• System ownership experience is required.
• Strong Java development skills are required, along with an understanding of how Java applications run in production.
• We value JVM tuning and troubleshooting experience.
• Performance optimisation experience is important.
• Previous experience in the finance sector is required.

Responsibilities:

• We are seeking a Senior Software Engineer to join our team building a distributed calculation engine for financial indices and quantitative models.
• We will rely on you to design and build new backend functionality for a business-critical platform.
• This is a backend engineering role focused on development rather than support or maintenance.
• You will work in a high-performance financial services environment.

Technologies:

• ARM
• Backend
• CI/CD
• Support
• JVM
• Java
• Scala

More:

We are recruiting for a Senior JVM Software Engineer (Scala/Java) on a 6-12 month contract, inside IR35, offering up to £600 per day. The role is based in London with hybrid working, requiring 2-3 days onsite each week. We are looking for someone to join our team building a distributed calculation engine used to calculate financial indices and quantitative models. This is a business-critical platform in a high-performance financial services environment. ARM is a specialist talent acquisition and management consultancy covering technical recruitment across major industries in the UK and beyond.

last updated 33 week of 2026