At a Glance
- Tasks: Design and build reliable backend services using functional programming principles.
- Company: Join a leading global banking organisation with a focus on innovation.
- Benefits: Competitive rate, hybrid working model, and potential for contract extension.
- Other info: Opportunity to work directly with business stakeholders and shape technical solutions.
- Why this job: Make an impact in investment banking technology while collaborating with top engineers.
- Qualifications: Strong functional programming experience, especially with Kotlin, Scala, or Clojure.
The predicted salary is between 59400 - 72600 £ per year.
Location: London
Working Model: Hybrid – 3 days per week in the office, with flexibility for the candidate to choose which 3 days they work onsite
Contract: 6-month rolling contract, with a further 6-month potential extension
Rate: Open to discussion based on the candidate’s expectations and experience
About the Opportunity
We are working with a leading global banking organisation on a high-profile Front Office technology programme within its Investment Banking / Capital Markets environment. We are looking for a genuinely senior, hands-on engineer to join a high-calibre engineering team developing and enhancing a business-critical platform used by Front Office teams. The team is particularly interested in engineers with a strong functional programming background and a solid understanding of modern software design principles. Kotlin experience is highly relevant, but the team is also open to engineers with strong functional programming experience in languages such as Scala or Clojure who are willing and able to embrace Kotlin.
This is a senior engineering role requiring strong technical depth, experience with Event Sourcing and Event-Driven Architecture, and the ability to work directly with business stakeholders.
Key Requirements
- Strong functional programming experience and understanding of functional programming principles
- Strong commercial experience with Kotlin, Scala, Clojure or another functional programming language
- Willingness and ability to work with Kotlin where it is not already your primary language
- Deep hands-on experience with Event Sourcing
- Strong understanding of Event-Driven Architecture
- Experience with CQRS and modern distributed systems
- Senior/VP-level engineering experience
- Experience working directly with Front Office / business stakeholders
- Strong experience with TDD, XP practices and collaborative engineering
- Experience with pair and/or mob programming
- Cloud experience, ideally GCP, with technologies such as GKE / Cloud Run
- Strong backend engineering experience building reliable, scalable and maintainable systems
What You'll Be Doing
- Design, build and evolve highly reliable backend services
- Develop systems using Event Sourcing and Event-Driven Architecture
- Apply functional programming principles to software design and implementation
- Work with Kotlin and contribute to a modern, highly collaborative engineering environment
- Work closely with Front Office users and business stakeholders to understand requirements and shape technical solutions
- Contribute to technical design and architectural decisions
- Develop clean, maintainable and well-tested code using TDD
- Work collaboratively through pair programming, mob programming and other XP practices
- Support production systems where reliability, correctness and availability are critical
- Help shape the engineering approach and share technical expertise across the wider team
What We're Looking For
We are particularly interested in senior engineers who bring strong functional programming expertise, rather than simply looking for candidates based on a specific technology stack. Relevant backgrounds could include:
- Kotlin with strong functional programming experience
- Scala / Scala-based backend engineering
- Clojure
- Other functional programming languages or environments, where the candidate has strong transferable engineering principles
The ability to demonstrate genuine Event Sourcing experience, strong engineering fundamentals and the ability to engage directly with business users will be particularly important.
Key Skills
- Functional Programming
- Kotlin
- Scala
- Clojure
- Event Sourcing
- Event-Driven Architecture
- CQRS
- Backend Engineering
- TDD
- XP
- Pair Programming
- Mob Programming
- GCP
- Front Office
- Investment Banking
- Capital Markets
This is a top-tier senior engineering opportunity for someone who combines strong technical depth with functional programming expertise, modern distributed-systems experience and the ability to work closely with Front Office stakeholders.
Functional Programming Engineer in Slough employer: Russell Tobin
As a Senior Kotlin Engineer at our client, you will join a dynamic and inclusive work culture that prioritises employee well-being and professional growth. Located in a vibrant area, the company offers comprehensive benefits including healthcare coverage, retirement savings plans, and unique perks like pet insurance and legal support, ensuring a rewarding work-life balance. With a commitment to equal opportunity and fair chance employment, this is an excellent place for talented individuals seeking meaningful and impactful careers.
