Senior Java Kotlin Developer

Salary: £30,000 - 50,000 per year

Requirements:

• Strong commercial experience building backend services in Kotlin
• Deep experience with Extreme Programming practices, including mob programming, test-driven development, continuous refactoring, and clean code discipline
• Cloud experience in CARE Cloud or GCP, including GKE and/or Cloud Run, Cloud SQL, Memorystore, Artifact Registry, Cloud Logging, and key management
• CI/CD and SDLC experience in a regulated or enterprise environment
• Comfortable working in production systems with high availability and correctness requirements

Responsibilities:

• Work primarily in mobs, sharing ownership of design and code
• Build, test, and evolve services with a strong focus on clarity, simplicity, and maintainability
• Support the platform in production
• Use incidents and defects as opportunities to improve system design and resilience
• Contribute across development, integration, and production support
• Help expand the platform into core business features such as sales screens, hedge workflows, and allocation processes

Technologies:

• Backend
• CI/CD
• Cloud
• GCP
• Support
• Kotlin
• SQL
• Java
• TDD
• XP

More:

We are HCLTech, a global technology company with 219,000+ people across 54 countries, delivering digital, engineering, and cloud capabilities across major industry sectors. We are hiring two senior Kotlin engineers to join our high-caliber London front-office engineering team, building a new cloud-hosted issuance platform for Investment Banking Capital Markets to replace a legacy bookbuilder. This is a hands-on role focused on Extreme Programming practices, small testable changes, frequent feedback, and sustainable delivery. The platform supports real-time bookbuilding activity for around 1,000 global users and annual issuances totalling over a trillion euros.

last updated 33 week of 2026