Senior Backend Developer

Senior Backend Engineer (Kotlin/Go) | London - 3 days

Salary range: £100,000 - £120,000

What if you could help build a digital bank used by millions of users globally?

WeEngage are partnered with a global fintech unicorn that is quietly building some of the most ambitious financial infrastructure in Europe. They're scaling rapidly, investing heavily in engineering, and hiring Senior Backend Engineers to help shape the next phase of growth.

You'll tackle the challenges of scaling high-volume distributed systems across multiple markets, helping shape architecture, reliability, and the future of financial infrastructure.

This isn't a role where requirements are handed down and tickets appear in your backlog.

You'll work in small, autonomous teams with genuine ownership of what you build—from design and implementation through to production and continuous improvement.

You'll likely enjoy this role if you:

• Want to solve complex distributed systems challenges at scale
• Enjoy influencing architecture, not just writing code
• Like taking ownership of services in production
• Value clean, maintainable systems over quick fixes
• Thrive in environments where engineers are trusted to make decisions

Tech-wise: we're interested in engineers with strong backend experience from Kotlin, Go or JVM-based environments, alongside exposure to cloud-native architectures and modern engineering practices.

London (Hybrid) - 3 days in their Central London office

Salary up to £120k base + equity

Primary tech stack: Kotlin, Go, Kafka, AWS, Kubernetes

If you're currently building scalable backend systems and want to work on something with genuine technical complexity and global impact, I'd be happy to share more.