26 to 50 of 117 API Development Jobs in London

Junior Frontend Developer Angular Developer – FintechTech: Angular, C# .net, Azure, SQL, Team City, GIT, TFSChallenge: Greenfield Trading platform, API development, industry specific challengesFirm: Well-known Insurtech software business, London, 10 man flat Dev TeamUp to 45,000Quant is urgently looking for an Angular Developer to join our high … profile client. Current challenges include cloud migration, greenfield trading platform development, and bank based API creation. Our client is a well known fintech software house in central London. This is an expansionary role building a greenfield financial modelling platform used by major finance business'.Working together with ...

do. Founded in 2018, Parser is a boutique technology services and consulting firm helping global organisations solve complex business challenges through digital transformation, product development and AI enablement. We are a fast-growing team of 340+ engineers and consultants across Europe (UK, Spain, Portugal), the Americas (US, Argentina, Uruguay … define the right problems, shape solutions, and deliver technology-driven outcomes that create measurable business value. Our expertise spans software engineering, AI & data, product development, and customer experience, delivered by teams that combine strong technical depth with a consulting mindset. Why Join Us? If you are looking ...

ASP.NET Developer – FintechTech: C# .net, Azure, SQL, Team City, GIT, TFS Challenge: Greenfield Trading platform, API development, industry specific challenges Firm: Well-known Insurtech software business, London, 10 man flat Dev Team Salary: 65,000Quant is urgently looking for an ASP.NET MVC Developer to join our high profile … client. Current challenges include cloud migration, greenfield trading platform development, and bank based API creation. Our client is a well known fintech software house in central London. This is an expansionary role building a greenfield financial modelling platform used by major finance business'.Working together with our team ...

Tech: ASP.NET MVC 5, Restful API, Angular, SQL, Azure Challenge: Greenfield Trading platform, API development, industry specific challenges Firm: Well-known fintech50 business, 40 man flat Dev Team Pay: 120k, Bonus- 750 training budget, Pension, Life/Health, Some Flex Working Technical Architect FintechQuant is urgently looking … hands on Technical Architect to join our high profile client. Current challenges include cloud migration, greenfield trading platform development, and bank based API creation. Our client is well known in the WRAP and SIPP market as a full service provider. The environment is that of Facebook or Google ...

will be working for one of our high-profile trading clients within the financial services domain, contributing hands-on to a Java-based development team supporting a high-volume message processing environment. The team is heavily Java-focused, operating within a client ecosystem that relies extensively on Kafka, Kubernetes … handling, and backpressure management. Experience designing and developing cloud-native applications with a microservices architecture running on Docker/OpenShift/Kubernetes. Strong application development skills in Java, SQL (SQL Server, Oracle, etc.) and messaging platforms such as Kafka and MQ. Experience with the Spring framework and Spring Boot ...

Required Qualifications, Capabilities, and Skills: Hands-on practical experience in system design, application development, testing, and operational stability for production systems Demonstrable ability to code in Java with Spring and Spring Boot, including microservices architecture and REST API development Experience developing, debugging, and maintaining enterprise-scale applications … large corporate environment using one or more modern programming languages and database querying languages (MS SQL Server, Oracle, SQL) Overall knowledge of the Software Development Life Cycle, including requirements, design, development, testing, release, and support Solid understanding of agile delivery practices, including CI/CD, application resiliency ...

contribute to the design, implementation, and maintenance of new features and platform enhancements. You will work as part of a collaborative team, following best development practices to deliver high-quality software that meets business needs. Key ResponsibilitiesParticipate in the design, development, and testing of platform features adhering … senior engineers to deliver software that meets quality and performance benchmarks. Support knowledge sharing through documentation and teamwork to ensure maintainability. Follow agreed development processes and contribute to continuous improvement of our platform and practices. Work collaboratively to deliver projects on time and to specification. Core Technical SkillsExperience with ...

energized by technical leadership, modern cloud technologies, and building products at scale, we'd love to hear from you. Responsibilities Lead the design and development of large-scale software solutions that support critical business capabilities Shape technical architecture and engineering standards across multiple products and teams Build modern, cloud … design principles Contribute across the full technology stack, from user interfaces to APIs and backend services Mentor engineers and provide technical guidance on complex development initiatives Drive best practices in software quality, performance, security, and maintainability Collaborate closely with Product, Engineering, and Architecture teams to translate business needs into ...

energized by technical leadership, modern cloud technologies, and building products at scale, we'd love to hear from you. Responsibilities Lead the design and development of large-scale software solutions that support critical business capabilities Shape technical architecture and engineering standards across multiple products and teams Build modern, cloud … design principles Contribute across the full technology stack, from user interfaces to APIs and backend services Mentor engineers and provide technical guidance on complex development initiatives Drive best practices in software quality, performance, security, and maintainability Collaborate closely with Product, Engineering, and Architecture teams to translate business needs into ...

high profile client. My client is a growing global Fintech business and market leaders in the invoice finance space. They are currently expanding their development team with an additional 3 developers in the City of London. The ASP.NET MVC Development role is expansionary due to a brand … international platform being created. The ASP.NET MVC Developer will be involved in greenfield platform development for a global high demand high transaction payments gateway. The frontend development of their web platform in HTML5, Javascript, angular.js and CSS3 and the backend in ASP.NET MVC and noSQL (which will ...

high profile client. My client is a growing global Fintech business and market leaders in the invoice finance space. They are currently expanding their development team with an additional 3 developers in the City of London. The ASP.NET MVC Development role is expansionary due to a brand … international platform being created. The ASP.NET MVC Developer will be involved in greenfield platform development for a global high demand high transaction payments gateway. The frontend development of their web platform in HTML5, Javascript, angular.js and CSS3 and the backend in ASP.NET MVC and noSQL (which will ...

Tech: C# 5, Visual Studiuo, AWS, Angular. JS, Bootstrap, Docker Challenge: Greenfield Financial platform, API development, industry specific challenges Firm: Well-known fintech50 business, City of London, 30 man flat Dev Team Pay: 70k, Bonus- training budget, Pension, Life/Health, Some Flex WorkingC# Senior Developer FintechQuant Capital … looking for a C# developer who wants to work in a tech driven bleeding edge business creating truly greenfield products. Working within the Development team the C# Developer will helping to introduce a new architecture as well as creating new products. This role also involves a clear career progression ...

high profile client. My client is a growing global Fintech business and market leaders in the invoice finance space. They are currently expanding their development team with an additional 3 developers in the City of London. The ASP.NET MVC Development role is expansionary due to a brand … international platform being created. The ASP.NET MVC Developer will be involved in greenfield platform development for a global high demand high transaction payments gateway. The frontend development of their web platform in HTML5, Javascript, angular.js and CSS3 and the backend in ASP.NET MVC and noSQL (which will ...

Tech: ASP.NET MVC 5, Restful API, Angular, SQL, Azure Challenge: Greenfield Trading platform, API development, industry specific challenges Firm: Well-known fintech50 business, City of London, 10 man flat Dev Team Pay: 40k, Bonus- 750 training budget, Pension, Life/Health, Some Flex WorkingJunior ASP.NET MVC Developer … FintechQuant is urgently looking for an ASP.NET MVC Developer to join our high profile client. Current challenges include cloud migration, greenfield trading platform development, and bank based API creation. Our client is well known in the WRAP and SIPP market as a full service provider. The environment ...

ASP.NET Developer – FintechTech: C# .net, Azure, SQL, Team City, GIT, TFS Challenge: Greenfield Trading platform, API development, industry specific challenges Firm: Well-known Insurtech software business, West London, 10 man flat Dev Team Pay: 65k Some Flex WorkingQuant is urgently looking for an ASP.NET MVC Developer to join … high profile client. Current challenges include cloud migration, greenfield trading platform development, and bank-based API creation. Our client is a well-known fintech software house in central London. This is an expansionary role building a greenfield financial modelling platform used by major finance business'.Working together with ...

Tech: ASP.NET MVC 5, JavaScript, Angular 2, Entity Framework, WEB API, JQuery, MySQL Challenge: Greenfield Trading platform, API development, Azure development. Firm: Well known FX fintech50 business, City of London, 10 Man flat Dev Team Pay: 65k, Bonus, Pension, Life/Health, Some Flex WorkingASP.NET MVC Developer … FintechQuant is urgently looking for an ASP.NET MVC Developer to join our high profile client. Current challenges include cloud migration, greenfield trading platform development, and bank based API creation. Our client is a well known broker in the equities space. They are currently building a greenfield trading platform ...

opportunity to extend into quantitative research and to help build the foundation for full stack, next gen SaaS service offerings. Key Responsibilities: Bulletproof script development: build reliable, production grade scripts from defined specifications. Data orchestration and integration: develop and own the orchestration scripts that integrate multiple data feeds (document … that turn financial filings and disclosures into structured, queryable data, including LLM assisted extraction where appropriate. Testing to production migration: own the path from development to production, testing rigorously in a staging environment before migrating scripts to the production server with proper versioning, rollback capability and zero disruption ...

will be working for one of our high-profile trading clients within the financial services domain, contributing hands-on to a Java-based development team supporting a high-volume message processing environment. The team is heavily Java-focused, operating within a client ecosystem that relies extensively on Kafka, Kubernetes …/OpenShift, caching solutions, REST APIs, and high-throughput distributed systems. You will bring solid, practical experience in backend Java development and a keen interest in scalable distributed systems. Responsibilities Technical Delivery Design, develop, and maintain backend components in Java, with a focus on performance and resilience. Contribute hands ...

Application Development & Integration Full-stack software engineering expertise across Java, Python, .NET, JavaScript/TypeScript, Node.js, React, Angular, and modern web technologies. Deep experience in API development, Microservices, Event-Driven Architectures, Enterprise Integration, and Distributed Systems design. Cloud, Platform Engineering & Infrastructure Expertise in Azure ...

seeking a Senior Applications Developer to join a team delivering pricing solutions for the Foreign Exchange (FX) business. You will cover the full software development lifecycle — analysis, design, implementation, and testing — while providing technical leadership to the team. Primary Responsibilities Design and develop high-quality trading GUIs providing compelling … applications using FDC3, and REST/WebSocket APIs. Experience with OpenFin or Interop is desirable but not essential. Drive AI integration within the development lifecycle — including AI-assisted coding, automated test generation, and intelligent monitoring Influence performance engineering across the UI stack: profiling, rendering optimisation, bundle analysis ...

embrace diversity and actively seek to attract individuals with unique backgrounds and perspectives. We break down barriers and encourage teamwork, enabling innovation and rapid development of solutions that make a difference. Our workplace generates an enriching and rewarding experience for our people and customers alike. Our vision … automate operational workflows, accelerate engineering productivity and enhance customer outcomes.As a Core AI Engineer, you will play a leading technical role in the design, development and deployment of AI solutions across the organisation. You will combine software engineering, machine learning and AI platform expertise to turn innovative concepts into ...

system that enables a novel workflow, the next you could be fine-tuning performance to enable low-latency operational outcomes. Our Product Development organisation is made up of small teams of Software Engineers. Each team focuses on a specific aspect of a product and work collaboratively to build cross … witnessing how customers engage with Foundry and experiencing these pain points firsthand, you'll gain unique insights that feed directly back into our development process, helping to refine and enhance our products. Core ResponsiblitiesArchitecting, developing, and maintaining high-performance, scalable backend services that underpin our our operational data ...

developing next generation AI platforms, cloud native infrastructure, and intelligent agent based applications that support cutting edge scientific research. Key Skills & Experience Strong Python development experience FastAPI and backend API development Cloud platforms (GCP and/or Azure) Kubernetes, Docker, and cloud-native architectures CI/ ...

between tactical edge sensors in low-bandwidth environments and strategic HQs running enterprise analytics. Python Engineering: High proficiency in Python for microservices, API development (FastAPI/Flask), data processing, and backend service development. Docker & Container Orchestration: Deep knowledge of containerisation using Docker, multi-stage builds, minimal base images … code adhering to MoD cyber security standards, automated testing, and building pipelines that package software into deployable Docker artifacts. The Experience You'll Bring Development & Tech: Python, Microservices, REST APIs, FastAPI, Flask, Asynchronous Programming, Object-Oriented Programming (OOP), Test-Driven Development (TDD). DevOps & Deployment: Docker, Docker Compose ...

/03/2027 Pay Rate: £492 per day all inc. (PAYE through Umbrella) Sector: Insurance Role Description: Key Responsibilities: Lead and manage software development projects using Java, Python, Typescript, AWS, React JS, Angular, and other technologies. Collaborate with cross-functional teams to define project scope, objectives, and deliverables. … data, wherever possible Work with cross-functional teams to deliver the defined scope, objectives, and deliverables on technical grounds Facilitate communication between stakeholders, development teams, and other departments. Ensure adherence to software development lifecycle (SDLC) processes and best practices. Develop detailed project plans, including timelines, resource allocation ...