At a Glance
- Tasks: Join a dynamic team to build and enhance a cutting-edge cloud platform using Kotlin.
- Company: HCLTech, a global leader in technology with a collaborative culture.
- Benefits: Competitive salary, health benefits, and opportunities for professional growth.
- Other info: Work in a fast-paced environment with excellent career advancement opportunities.
- Why this job: Make a real impact on a high-stakes platform used by global users in finance.
- Qualifications: Strong Kotlin experience and familiarity with Extreme Programming practices.
The predicted salary is between 50000 - 70000 £ per year.
HCLTech is a global technology company, home to 219,000+ people across 54 countries, delivering industry-leading capabilities centered on digital, engineering and cloud, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services.
We require two senior, experienced Kotlin engineers to support and extend a cloud-hosted platform used for bookbuilding issuances across Investment Banking Capital Markets. These roles will join a high-caliber London front-office engineering team building a new issuance platform to replace a legacy bookbuilder. This is a hands-on engineering role with strong emphasis on Extreme Programming (XP) practices, including mob programming, test-first development, and continuous refactoring. Engineers are expected to contribute across development, integration, and production support, working closely as a team to maintain a high standard of code quality and system reliability.
Location: London
Required Skills:
- Strong commercial experience building backend services in Kotlin
- Deep experience with XP practices, including:
- Mob programming as a primary way of working
- Test-driven development (TDD)
- Continuous refactoring and clean code discipline
- Cloud experience in CARE Cloud / GCP, including:
- GKE and / or Cloud Run
- Cloud SQL, Memorystore
- Artifact Registry, Cloud Logging
- Key Management
- CI/CD and SDLC experience in a regulated / enterprise environment
- Comfortable working in production systems with high availability and correctness requirements
Role Context & Responsibilities:
We are building a new issuance platform to replace a legacy bookbuilder. The system is akin to a real-time trading platform, used by ~1,000 global users who add and remove orders in real time during a tight ~5-hour execution window. The platform supports issuances totalling over a trillion euros annually. Foundational services are already in place; the focus now is on expanding into core business features such as Sales screens, hedge workflows, and allocation processes. The work is delivered incrementally, with a strong emphasis on small, testable changes, frequent feedback, and sustainable pace.
Engineers in this role:
- 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, using incidents and defects as opportunities to improve system design and resilience
Senior Backend Developer - Kotlin in London employer: HCLTech
HCLTech is an exceptional employer, offering a dynamic work environment in the heart of London where innovation thrives. With a strong commitment to employee growth through hands-on engineering roles and collaborative practices like mob programming, team members are empowered to enhance their skills while contributing to impactful projects in the financial services sector. The company's emphasis on Extreme Programming (XP) practices ensures a culture of continuous improvement and high-quality code, making it an ideal place for passionate developers to advance their careers.
