Software Engineer - Python/FastAPI/React/Functionalprogramming/Typescript Location: London, UK (Hybrid) Type: Full-time Level: Mid to Senior Salary: £70,000 to £100,000 Company: VC back Startup About the Role: This startup is building a cutting-edge platform to transform how engineers design physical products. Instead of creating one solution at a … Computational Geometry. Opportunities: Frontend or Backend Tech Stack within the engineering environment: Backend: Python, FastAPI, Pydantic, PostgreSQL, Docker Frontend: React, TypeScript, Vite Infrastructure: GitHub Actions, GCP, Kubernetes (optional) Paradigms: Functionalprogramming, async APIs, event-driven architecture Responsibilities Build and maintain backend services using FastAPI and Python for geometry, simulation, and data workflows Develop responsive, performant frontends using React … and TypeScript Work closely with domain experts (engineers, designers) to translate complex physical problems into usable software features Follow functionalprogramming practices to write testable, composable code Own features from idea to implementation to deployment Contribute to architectural decisions in a fast-moving, early-stage product Requirements Bachelor's degree in Computer Science 2+ years of experience building More ❯
content management system Internal tooling : Creating intuitive interfaces for content creation, user management, and system administration Data visualization : Building dashboards and analytics interfaces UI implementation : Translating requirements into clean, functional user interfaces with TypeScript Integration work : Connecting frontend tools seamlessly with backend services What we’re looking for: Proven expertise : 5+ years, with 2+ years experience building production Elixir …/Phoenix applications Phoenix Framework mastery : Deep understanding of Phoenix and the broader Elixir ecosystem Functionalprogramming proficiency : Strong grasp of functionalprogramming principles and patterns OTP knowledge : Experience with OTP supervision trees, GenServers, and distributed Erlang applications Database expertise : Strong PostgreSQL skills with experience optimizing complex queries AI-assisted development: Experience using modern AI coding More ❯
content management system Internal tooling : Creating intuitive interfaces for content creation, user management, and system administration Data visualization : Building dashboards and analytics interfaces UI implementation : Translating requirements into clean, functional user interfaces with TypeScript Integration work : Connecting frontend tools seamlessly with backend services What we’re looking for: Proven expertise : 5+ years, with 2+ years experience building production Elixir …/Phoenix applications Phoenix Framework mastery : Deep understanding of Phoenix and the broader Elixir ecosystem Functionalprogramming proficiency : Strong grasp of functionalprogramming principles and patterns OTP knowledge : Experience with OTP supervision trees, GenServers, and distributed Erlang applications Database expertise : Strong PostgreSQL skills with experience optimizing complex queries AI-assisted development: Experience using modern AI coding More ❯
offering the opportunity to work on real-time, high-throughput systems within a fast-paced and innovative trading environment. The ideal candidate will be an expert in reactive Java programming , multithreading, and clean software design, with the mindset to thrive in high-pressure, performance-driven teams. Roles and Responsibilities: Develop and maintain high-performance, low-latency Java-based systems … Kafka Streams , Akka , Eclipse Vert.x , or Apache Flink . Utilize multithreading , concurrency models , and Executor Services to optimize system performance and throughput. Write clean, efficient, and maintainable code using functionalprogramming paradigms in Java. Follow and promote SOLID principles , unit testing , and other modern software development best practices. Collaborate closely with quants, traders, and other developers in a … timelines. Key Requirements: 6+ years of hands-on Java development experience, preferably in front office systems (e.g., trading platforms, pricing engines, market data systems). Proven expertise in reactive programming (Kafka Streams, Akka, Vert.x, Flink). Solid understanding of multithreading and Executor Services in Java. Strong background in functionalprogramming and Java 8+ features. Adherence to robust More ❯
offering the opportunity to work on real-time, high-throughput systems within a fast-paced and innovative trading environment. The ideal candidate will be an expert in reactive Java programming , multithreading, and clean software design, with the mindset to thrive in high-pressure, performance-driven teams. Roles and Responsibilities: Develop and maintain high-performance, low-latency Java-based systems … Kafka Streams , Akka , Eclipse Vert.x , or Apache Flink . Utilize multithreading , concurrency models , and Executor Services to optimize system performance and throughput. Write clean, efficient, and maintainable code using functionalprogramming paradigms in Java. Follow and promote SOLID principles , unit testing , and other modern software development best practices. Collaborate closely with quants, traders, and other developers in a … timelines. Key Requirements: 6+ years of hands-on Java development experience, preferably in front office systems (e.g., trading platforms, pricing engines, market data systems). Proven expertise in reactive programming (Kafka Streams, Akka, Vert.x, Flink). Solid understanding of multithreading and Executor Services in Java. Strong background in functionalprogramming and Java 8+ features. Adherence to robust More ❯
management, and workflow automation. Collaborate with global Operations, Compliance, Risk, and Technology teams to translate complex regulatory and operational processes into efficient system designs. Establish engineering best practices for functionalprogramming, microservices, cloud adoption, resiliency engineering, and operational observability. Drive technical governance, platform strategy, and roadmap decisions for Operations Technology. Provide hands-on guidance for distributed systems development … Spark, and related technologies. Support delivery teams with architecture reviews, performance tuning, and integration patterns across upstream and downstream platforms. Required Skills & Experience Expert-level experience with Scala and functionalprogramming principles. Strong background architecting large-scale distributed systems in a back-office or post-trade context within financial services. Detailed knowledge of trade lifecycle events, settlements, confirmations More ❯
City of London, London, United Kingdom Hybrid/Remote Options
Tiro Partners Limited
of the UK’s most successful startups, built by top-tier engineers and developers from industry leading teams. We’re looking for a software engineer who enjoys writing clean, functional code and is genuinely passionate about real-world engineering not just building software, but helping change how things are designed and built. Tech Stack within the engineering environment: Backend … backend services using FastAPI and Python for geometry, simulation, and data workflows Work closely with domain experts (engineers, designers) to translate complex physical problems into usable software features Follow functionalprogramming practices to write testable, composable code Own features from idea to implementation to deployment Contribute to architectural decisions in a fast-moving, early-stage product Requirements Bachelor … a related technical field 2+ years of experience building web applications in a production environment Strong experience with Python and API frameworks (FastAPI, Flask, etc.) Comfort or interest in functionalprogramming principles and clean code architecture A genuine interest in engineering and the physical world Ability to thrive in a startup or agile environment with autonomy and ownership More ❯
of the UK’s most successful startups, built by top-tier engineers and developers from industry leading teams. We’re looking for a software engineer who enjoys writing clean, functional code and is genuinely passionate about real-world engineering not just building software, but helping change how things are designed and built. Tech Stack within the engineering environment: Backend … backend services using FastAPI and Python for geometry, simulation, and data workflows Work closely with domain experts (engineers, designers) to translate complex physical problems into usable software features Follow functionalprogramming practices to write testable, composable code Own features from idea to implementation to deployment Contribute to architectural decisions in a fast-moving, early-stage product Requirements Bachelor … a related technical field 2+ years of experience building web applications in a production environment Strong experience with Python and API frameworks (FastAPI, Flask, etc.) Comfort or interest in functionalprogramming principles and clean code architecture A genuine interest in engineering and the physical world Ability to thrive in a startup or agile environment with autonomy and ownership More ❯
City of London, London, United Kingdom Hybrid/Remote Options
Signify Technology
enterprise clients. Their platform helps organisations make smarter, faster decisions by uncovering meaningful connections in complex data. Role and responsibilities: Build and enhance core platform services using Scala and functionalprogramming principles. Design, implement, and maintain scalable, distributed systems and microservices. Collaborate in agile teams alongside engineers, product owners, and designers. Work across the full software development lifecycle … from design to deployment. Contribute to continuous improvement of developer tooling and automation. Job requirements: Strong experience with Scala - 3+ years ideally. Understanding of functionalprogramming and strongly typed systems. Experience with technologies such as Akka, Cats, Monix, Docker, Kubernetes, Spark etc. Familiarity with DevOps tools and CI/CD practices. Knowledge of cloud environments (GCP preferred). More ❯
enterprise clients. Their platform helps organisations make smarter, faster decisions by uncovering meaningful connections in complex data. Role and responsibilities: Build and enhance core platform services using Scala and functionalprogramming principles. Design, implement, and maintain scalable, distributed systems and microservices. Collaborate in agile teams alongside engineers, product owners, and designers. Work across the full software development lifecycle … from design to deployment. Contribute to continuous improvement of developer tooling and automation. Job requirements: Strong experience with Scala - 3+ years ideally. Understanding of functionalprogramming and strongly typed systems. Experience with technologies such as Akka, Cats, Monix, Docker, Kubernetes, Spark etc. Familiarity with DevOps tools and CI/CD practices. Knowledge of cloud environments (GCP preferred). More ❯
London, England, United Kingdom Hybrid/Remote Options
CipherTek Recruitment
environment. 💼 The Opportunity Collaborate with elite engineers on a SPA used across the investment bank for derivatives trading. Build elegant, high-performance UIs with real-time data updates and functionalprogramming paradigms. Shape a front-end architecture trusted by traders, with a focus on resilience, performance, and usability . Leverage the latest web technologies in a fast-paced … Requirements Strong commercial experience with TypeScript , ES6 , HTML5, and advanced CSS. Proven delivery of performance-critical SPAs , ideally within front-office trading or other high-frequency environments. Proficiency with functional and reactive programming using immutable data structures . Attention to UI/UX detail – you take pride in building intuitive, beautiful products. Comfortable working in collaborative, high-performance More ❯
development experience Strong, proactive communication skills, with a deep preference for teamwork Experience in independent project management of complex problem solving Tech-agnostic engineer, with competence in a major programming language - experience in functionalprogramming languages is preferred. Some of the technologies we use include Elixir, Phoenix LiveView, EmberJS, TypeScript, Python, Postgres SQL, AWS and Docker. The More ❯
City of London, London, United Kingdom Hybrid/Remote Options
Client Server
Senior Full Stack Engineer/Developer (TypeScript Elixir AWS) London/WFH to £100k Do you enjoy problem solving and working with a range of technologies including functionalprogramming languages such as Elixir, using the right tool for the job? You could be progressing your career in a senior, hands-on Full Stack Engineer role at a successful … have advanced analytical and problem solving skills You're comfortable taking ownership of projects and mentoring more junior team members You have strong TypeScript skills, combined with any backend programming language (e.g. Python, Java, C++, C#) You're happy to work with the following tech stack (you don't need experience with all): Elixir, Ember, Elm, Phoenix, LiveView, Python More ❯
City of London, London, United Kingdom Hybrid/Remote Options
Venture Up
they are seeking a results-oriented individual who is eager to coach and mentor team members, helping them grow both professionally and personally. Their development team uses various different programming languages with a particular focus on Golang but they are looking primarily for strong software developers first and experiences of technologies second. The company is made up of some … commercial experience in software engineering. Demonstrable experience building high-quality and scalable digital products and features. Strong project management and communication skills with the ability to collaborate across cross-functional teams. Ability to confidently make technical decisions in the best interests of users and the business. Strong knowledge and hands-on experience of designing well defined interfaces, we’re … CD pipelines, we’re using Google Cloud Build and Github Actions. Fluency in English (verbal and written). Join an exciting company with many opportunities to progress your Golang functionalprogramming career. Send your CV for immediately review and further details. Golang Backend Engineer Fully Remote/UK Working Hours More ❯
they are seeking a results-oriented individual who is eager to coach and mentor team members, helping them grow both professionally and personally. Their development team uses various different programming languages with a particular focus on Golang but they are looking primarily for strong software developers first and experiences of technologies second. The company is made up of some … commercial experience in software engineering. Demonstrable experience building high-quality and scalable digital products and features. Strong project management and communication skills with the ability to collaborate across cross-functional teams. Ability to confidently make technical decisions in the best interests of users and the business. Strong knowledge and hands-on experience of designing well defined interfaces, we’re … CD pipelines, we’re using Google Cloud Build and Github Actions. Fluency in English (verbal and written). Join an exciting company with many opportunities to progress your Golang functionalprogramming career. Send your CV for immediately review and further details. Golang Backend Engineer Fully Remote/UK Working Hours More ❯
excellent problem-solving and collaboration skills and is passionate about delivering high-quality, user-centric experiences. SKILLS AND EXPERIENCE WE ARE LOOKING FOR · Strong understanding of Swift (protocols, generics, functionalprogramming) and SwiftUI · Proficiency in Xcode for development, debugging, and performance analysis. · Solid experience with RESTful APIs, GraphQL, JSON, and integrating third-party services · Knowledge of data persistence … Commitment to clean, efficient, well-documented code, code reviews, and best practices. · Excellent problem-solving, critical thinking, and independent technical challenge resolution. · Effective communication and seamless collaboration with cross-functional teams. · Demonstrated ownership of features, independent task management, and self-directed research. · Proactive adaptability and continuous learning of latest iOS trends and technologies. · Ability to mentor junior developers and More ❯
prolongation) Onsite requirements: 3 days/weekly in London office Your Experience and Skills Required: 10+ years of professional Java development experience Strong knowledge of low-latency, multi-threaded programming techniques Experience with trading platforms (e.g., Bloomberg, Tradeweb) Understanding of financial markets, particularly Rates and Credit bonds/derivatives Oustanding experience and knowledge with ION platform Expertise in object … oriented design patterns and SOLID principles Experience with functionalprogramming concepts. Proven track record in Agile development environments Excellent problem-solving and analytical skills Experience with Spring Framework and RESTful API Cloud experience More ❯
prolongation) Onsite requirements: 3 days/weekly in London office Your Experience and Skills Required: 10+ years of professional Java development experience Strong knowledge of low-latency, multi-threaded programming techniques Experience with trading platforms (e.g., Bloomberg, Tradeweb) Understanding of financial markets, particularly Rates and Credit bonds/derivatives Oustanding experience and knowledge with ION platform Expertise in object … oriented design patterns and SOLID principles Experience with functionalprogramming concepts. Proven track record in Agile development environments Excellent problem-solving and analytical skills Experience with Spring Framework and RESTful API Cloud experience More ❯
is keen to learn and has excellent problem-solving and collaboration skills and is passionate about delivering high-quality, user-centric experiences. Qualifications: Strong understanding of Swift (protocols, generics, functionalprogramming) and SwiftUI Proficiency in XCode for development, debugging, and performance analysis. Solid experience with RESTful APIs, GraphQL, JSON, and integrating third-party services Knowledge of data persistence … Commitment to clean, efficient, well-documented code, code reviews, and best practices. Excellent problem-solving, critical thinking, and independent technical challenge resolution. Effective communication and seamless collaboration with cross-functional teams. Demonstrated ownership of features, independent task management, and self-directed research. Proactive adaptability and continuous learning of latest iOS trends and technologies. Ability to mentor junior developers and More ❯
City, London, United Kingdom Hybrid/Remote Options
Client Server
Senior Full Stack Engineer/Developer (TypeScript Elixir AWS) London/WFH to £100k Do you enjoy problem solving and working with a range of technologies including functionalprogramming languages such as Elixir, using the right tool for the job? You could be progressing your career in a senior, hands-on Full Stack Engineer role at a successful More ❯
responsive and reliable mobile applications that provide our customers a rewarding experience. You'll also play a key technical leadership role, working closely with architects, product managers, and cross-functional teams. You'll have an opportunity to participate in the whole development cycle, using modern technologies, architectures and processes. When you join Mindera we welcome you into a fun … code, taking advantage of software design patterns, architectural patterns and data structures. Nice to have Experience with FRP framework (ReactiveCocoa, RxSwift, etc) Experience with MVVM(-C) architecture Experience with Functionalprogramming/concepts Experience with CI/CD development methodologies and tools (fastlane, Jenkins, Travis, GoCD, etc) Ability/experience testing code and/or writing testable code More ❯
Java development experience. Strong multi-threading and low-latency programming. Deep understanding of financial instruments (Rates, Credit, Derivatives). Proven experience with ION platforms and FIX protocol. Familiarity with functionalprogramming and SOLID principles. More ❯
Java development experience. Strong multi-threading and low-latency programming. Deep understanding of financial instruments (Rates, Credit, Derivatives). Proven experience with ION platforms and FIX protocol. Familiarity with functionalprogramming and SOLID principles. More ❯
skills and a collaborative mindset Proven ability to take initiative and manage complex projects independently A tech-agnostic approach with proficiency in at least one major language (experience with functionalprogramming is a plus) Experience with some of the following technologies is beneficial: Elixir, Java, C++, Python, Phoenix LiveView, EmberJS, TypeScript, Postgres, AWS, Docker Why Join Them Work More ❯
skills and a collaborative mindset Proven ability to take initiative and manage complex projects independently A tech-agnostic approach with proficiency in at least one major language (experience with functionalprogramming is a plus) Experience with some of the following technologies is beneficial: Elixir, Java, C++, Python, Phoenix LiveView, EmberJS, TypeScript, Postgres, AWS, Docker Why Join Them Work More ❯
