13 of 13 DemandTrendPermanent Functional Programming Jobs in London

Senior Frontend Developer/Lead Frontend Engineer/React/TypeScript/Functional Programming/Elm/Haskell/AI Senior Frontend Developer - Deep Tech GenAI Startup Title: Senior Frontend Developer Location: Hybrid, London (1 day a week on-site) Domain: AI startup, Engineering Tech: JavaScript, React, TypeScript, Elm, WebGL, Tailwind CSS, AI Salary … computational geometry to build tools that transform large-scale engineering through machine learning and generative AI. They are now looking for a Senior Frontend Engineer with a passion for functional programming and elegant, performant user interfaces. The frontend stack includes React, TypeScript, Elm, and WebGL, with the backend built mainly in Python and running on AWS. Core skills … Strong senior-level frontend expertise in JavaScript, React, and TypeScript Experience in functional programming (Elm, Haskell, WebGL) Proven track record in small, scaling teams BSc in Computer Science (or related discipline) from a leading university, or equivalent practical experience Ability to commute to London once a week Nice-to-haves : OpenGL, Vulkan, Python, Tailwind CSS, AI/ML More ❯

Senior Frontend Developer/Lead Frontend Engineer/React/TypeScript/Functional Programming/Elm/Haskell/AI Senior Frontend Developer - Deep Tech GenAI Startup Title: Senior Frontend Developer Location: Hybrid, London (1 day a week on-site) Domain: AI startup, Engineering Tech: JavaScript, React, TypeScript, Elm, WebGL, Tailwind CSS, AI Salary … computational geometry to build tools that transform large-scale engineering through machine learning and generative AI. They are now looking for a Senior Frontend Engineer with a passion for functional programming and elegant, performant user interfaces. The frontend stack includes React, TypeScript, Elm, and WebGL, with the backend built mainly in Python and running on AWS. Core skills … Strong senior-level frontend expertise in JavaScript, React, and TypeScript Experience in functional programming (Elm, Haskell, WebGL) Proven track record in small, scaling teams BSc in Computer Science (or related discipline) from a leading university, or equivalent practical experience Ability to commute to London once a week Nice-to-haves : OpenGL, Vulkan, Python, Tailwind CSS, AI/ML More ❯

Product-Focused Backend Engineer Functional Programming & Distributed Systems London (Hybrid) | £120,000£160,000 + Equity At Ncounter, were partnering with a cutting-edge AI company on a mission to redefine how professionals in highly regulated industries interact with complex, multi-modal data. Their platform empowers users to deploy custom no-code AI agents that produce verifiable outputs … Design to solve real user problems Playing an active role in shaping team goals, defining technical metrics, and prioritising outcomes over ticket-chasing Your Background: Hands-on experience with functional programming (Elixir is a plus, but other languages like Scala, Haskell, Clojure, Go, Node.js, or F# are welcome) Proven track record of building and scaling distributed backend systems More ❯

Product-Focused Backend Engineer – Functional Programming & Distributed Systems London (Hybrid) | £120,000–£160,000 Equity At Ncounter, we’re partnering with a cutting-edge AI company on a mission to redefine how professionals in highly regulated industries interact with complex, multi-modal data. Their platform empowers users to deploy custom no-code AI agents that produce verifiable outputs … Design to solve real user problems Playing an active role in shaping team goals, defining technical metrics, and prioritising outcomes over ticket-chasing Your Background: Hands-on experience with functional programming (Elixir is a plus, but other languages like Scala, Haskell, Clojure, Go, Node.js, or F# are welcome) Proven track record of building and scaling distributed backend systems More ❯

with Python Experience or a solid understanding of finance or financial systems Fullstack development experience using JavaScript and React Experience with Flask or similar Python web frameworks Familiarity with functional programming Experience working with PostgreSQL or other SQL databases Knowledge of Docker and containerized environments Exposure to cloud platforms (ideally AWS ) Experience with financial operations systems More ❯

and retrospectives. Support continuous integration and deployment pipelines. Required Skills and Experience: Strong commercial experience in Scala development. Hands-on experience with the Play Framework . Solid understanding of functional programming principles. Experience working with REST APIs , JSON, and HTTP protocols. Familiarity with version control systems (Git). Agile/Scrum delivery environment experience. Understanding of TDD/ More ❯

and retrospectives. Support continuous integration and deployment pipelines. Required Skills and Experience: Strong commercial experience in Scala development. Hands-on experience with the Play Framework . Solid understanding of functional programming principles. Experience working with REST APIs , JSON, and HTTP protocols. Familiarity with version control systems (Git). Agile/Scrum delivery environment experience. Understanding of TDD/ More ❯

at A-Level (or equivalent) Must have unrestricted right to work in the UK, as we unfortunately cannot provide Visa Sponsorship . Desirable Skills Strong understanding of object-oriented programming and multithreading/concurrency. Experience building real-time, high-throughput systems (ideally in finance or trading). Familiarity with electronic trading platforms, FIX protocol, or market data feeds is … Azure, AWS, or GCP) and DevOps tools. Strong communication skills and the ability to work collaboratively in a team-oriented environment. Experience with containerization (Docker, Kubernetes). Exposure to functional programming concepts (e.g., F# or other paradigms). Background in financial markets, derivatives, or algorithmic trading. Knowledge of data structures, networking, and low-latency optimisation techniques. Why Join More ❯

of business-driven enhancements while maintaining high performance and stability in production environments. In this role, you will work with CI/CD and TDD practices in a modern functional language (Scala) , with a strong focus on multi-terabyte Oracle Exadata database performance and tuning. You'll partner closely with the BA/PM, technical programme lead, and other … Participate actively in Agile ceremonies and cross-team collaboration. Required Skills & Experience Deep expertise in Oracle Exadata performance and tuning. Strong background in Scala or another modern OO/functional programming language. Experience with reactive event-sourced systems . Proficient in applying design patterns and optimizing algorithms. Solid understanding of Agile/Scrum methodologies. Experience with Specification by More ❯

stories/Skills you’ll need: Demonstrated experience as a Senior Data Engineer in complex enterprise environments Deep understanding of technology fundamentals and experience with languages like Python, or functional programming languages like Scala Demonstrated experience in design and development of big data applications using tech stacks like Databricks, Apache Spark, HDFS, HBase and Snowflake Commendable skills in More ❯

stories/Skills you’ll need: Demonstrated experience as a Senior Data Engineer in complex enterprise environments Deep understanding of technology fundamentals and experience with languages like Python, or functional programming languages like Scala Demonstrated experience in design and development of big data applications using tech stacks like Databricks, Apache Spark, HDFS, HBase and Snowflake Commendable skills in More ❯

stories/Skills you’ll need: Demonstrated experience as a Senior Data Engineer in complex enterprise environments Deep understanding of technology fundamentals and experience with languages like Python, or functional programming languages like Scala Demonstrated experience in design and development of big data applications using tech stacks like Databricks, Apache Spark, HDFS, HBase and Snowflake Commendable skills in More ❯

stories/Skills you’ll need: Demonstrated experience as a Senior Data Engineer in complex enterprise environments Deep understanding of technology fundamentals and experience with languages like Python, or functional programming languages like Scala Demonstrated experience in design and development of big data applications using tech stacks like Databricks, Apache Spark, HDFS, HBase and Snowflake Commendable skills in More ❯