176 to 200 of 260 API Development Jobs in England

Machine Learning Scientist III

Hiring Organisation
Expedia
Location
London, UK
Employment Type
Full-time
engineers, product managers, applied scientists, and domain experts to translate ambiguous business problems into scalable ML solutions. Contribute to system design, low-level design, API development, and data modelling for production machine learning systems. Build and operate production solutions using technologies such as Python, TensorFlow, PyTorch, Redis, Airflow … operational improvement. Experience building and operating production ML systems at scale. Understanding of distributed systems, data structures, algorithms, system design, low-level design, API design, and data modelling. Experience with batch and real-time data processing systems, databases such as Redis, and low-latency serving technologies such as KServe ...

Junior Angular 6 Developer Fintech

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
Tech: Angular 6, JSON, HTML5, CSS3, AWS, Backend in Java Challenge: Greenfield Trading platform, API development, industry specific challenges Firm: Well-known fintech50 software business, City of London, 20 man flat Dev Team Pay: 50k, Bonus- 750 training budget, Pension, Life/Health, Some Flex WorkingJunior Angular … client modifications as well as a brand new greenfield B2C platform for wealth management to the retail/high volume space. Currently the development team stands at 8 people with a project manager and business analyst. The tech stack is Angular 6, Java, Linux, JSP, Maven, Hibernate, JSONThe Angular ...

Senior Fullstack Engineer - Python + React | Remote

Location
Greater London, England, United Kingdom
Parser Limited is seeking a Senior Fullstack Engineer to design, develop, and maintain scalable backend services and robust frontend interfaces. The role emphasizes microservices, API development, and secure, performant systems with ReactJS on the frontend. You will collaborate with product managers and engineers to deliver AI-enabled solutions ...

Full Stack Engineer – AI / Knowledge Graph

Hiring Organisation
E-Solutions IT Services UK Ltd
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
Security Agents AWS Neptune, RDF, SPARQL, Semantic Knowledge Graphs SLM/LLM fine-tuning Anthropic MCP (Model Context Protocol) MuleSoft APIs, Fivetran APIs & custom API development Microsoft Copilot Studio & Agent Builder Performance tuning & concurrent workstreams Security policies & roles Desirable: Collibra, Immuta ...

Principal Fullstack Engineer (Angular/Swift or similar)

Hiring Organisation
Verisk Analytics
Location
London, UK
Employment Type
Full-time
such as Azure or AWSExperience developing and deploying microservices-based applicationsStrong understanding of high-availability, scalability, and performance optimization conceptsExperience working within Agile software development environmentsNice to haveExperience with Swift and the Vapor framework for server-side API developmentExperience building APIs with technologies such as C# or JavaExperience … growth, technical leadership, and long-term career developmentJoin a stable, global organization investing heavily in modern technology and platform transformation#LI-KS1#HybridLead the design and development of large-scale software solutions that support critical business capabilitiesShape technical architecture and engineering standards across multiple products and teamsBuild modern, cloud-native applications ...

Cloud-Native AI Developer & Systems Engineer

Location
Greater London, England, United Kingdom
powered applications within a collaborative team. The successful candidate will leverage their 5-8 years of Python experience along with AI and ML development skills to create scalable, high-performance applications that integrate various AI technologies. Responsibilities include developing data pipelines, optimizing performance, and utilizing cloud platforms. Ideal candidates … will exhibit a robust understanding of API development and database systems, complemented by strong problem-solving abilities. #J-18808-Ljbffr ...

Application Developer

Location
Sheffield, England, United Kingdom
Developer to join their team for a long term contract. We are looking for a highly skilled Application Developer with strong expertise in identity API development, data ingestion and transformation, and event-driven (Pub/Sub) architectures. This role focuses on building secure, scalable identity and access workflows … Expertise Proven experience with modern identity orchestration platforms (Auth0 Actions, Okta Workflows, WorkOS, or SlashID) Strong programming skills in Python, Go, or Node.js for API and microservice development. Experience designing and deploying cloud-native APIs (Cloud Run, Cloud Functions, GKE). Deep understanding of event-driven architectures, Pub/ ...

Legal Solutions Architect

Location
Boston, England, United Kingdom
design, develop, and deploy custom software solutions that support legal workflows across the firm. This role will serve as Orrick Labs' primary pro-code development resource, building applications, integrations, APIs, automation services, data pipelines, and user-facing solutions that extend and complement the team's low-code capabilities. … software engineering skills and the ability to translate business requirements into scalable, secure, and maintainable technical solutions. It will also require combining pro-code development, Microsoft platform agentic AI capabilities, and low-code tools into practical, secure, and maintainable solutions. The Legal Solutions Architect will partner closely with attorneys ...

Full Stack Software Engineer

Location
Greater London, England, United Kingdom
Building and maintaining both the frontend and backend of our core product, ensuring seamless user experiences and high performance. Implementing DevOps practices to streamline development workflows, automate deployments, and ensure continuous integration and continuous delivery (CI/CD) via Gitlab. Collaborating closely with the product team to translate user … Troubleshooting and resolving technical issues , ensuring the smooth operation of our platform. Staying up-to-date with the latest technologies and trends in web development, DevOps, and the space industry. Growing with us! As an early team member, you'll have the opportunity to contribute to all aspects ...

AI ENGINEERING CONSULTANT/ARCHITECT

Location
Manchester, England, United Kingdom
with clients and internal teams to take ideas from concept to production. This includes agentic systems, bespoke applications, and early-stage (0–1) product development , primarily using OpenAI technologies. We’re particularly interested in engineers who combine technical depth with real-world impact , and who are keen to grow … Deliver GenAI solutions including RAG pipelines, tool use, and evaluation frameworks Contribute across the full solution lifecycle: design, build, testing, deployment, and iteration Support development of agentic systems (multi-agent workflows, orchestration, human-in-the-loop) Optimise performance, cost, and maintainability in cloud environments (AWS/Azure) Work closely ...

C# Desktop Developer Fintech

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
Tech: C#, .Net, F#, WPF, SignalR/websockets, Protocol Buffers, Octopus, Autofac, SQL ServerChallenge: Greenfield Trading platform, API development, industry specific challengesFirm: Well-known Commodity Trading Software Firm, City of London, 40 man flat Dev TeamPay: 75k, 20% Bonus- 750 training budget, Pension, Life/Health, Some Flex … WorkingC# Desktop Developer FintechQuant is urgently looking for a C# Software Engineer to join our high profile client. Current challenges greenfield trading platform development and Integration to other platformsOur client is a well known commodity trading platform. The environment is that of Facebook or Google, relaxed open with time ...

C# Backend Developer

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
Tech: C#, concurrent .NET code,TCP/IP and websockets, SQLChallenge: Greenfield Trading platform, API development, industry specific challengesFirm: Well-known Commodity Trading Software Firm, City of London, 40 man flat Dev TeamPay: 85k, 20% Bonus- 750 training budget, Pension, Life/Health, Some Flex WorkingC# Backend Developer … FintechQuant is urgently looking for a junior and senior C# Software Engineer to join our high profile client. Current challenges greenfield trading platform development and Integration to other platformsOur client is a well known commodity trading platform. The environment is that of Facebook or Google, relaxed open with time ...

C# Developer - Buckinghamshire

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
Tech: .C#, WPF DeveloperChallenge: Greenfield Automated Data platform, API development, industry specific challengesFirm: Well-known digital racing solutions, Buckingham 20 man flat Dev TeamPay: 50k, Benefits, Remote WorkingC# Developer RacingQuant Capital is urgently looking for a C# Developer to join our high profile client. My client … thought process. My client is based in BuckinghamCommutable fromMilton Keynes, London, Banbury, Oxford, Birmingham, St AlbansGreenfield. C# Lead Software Developer, .Net Senior Developer, Development Lead, Technical Lead, Lead Application Developer Fullstack (web technologies, HTML, JQuery, AngularJS, SQL Server, C#, API ...

Lead C# IoT & Cloud Software Engineer

Location
Oxford, England, United Kingdom
technology company in Oxford is seeking a Senior Software Engineer to lead the development of IoT device and cloud platform software. The role involves developing and maintaining C# codebases, API development, and collaboration with technical teams. Ideal candidates will have 8 years of C# experience, familiarity with ...

Customer Engagement Manager

Location
Greater London, England, United Kingdom
NetSuite, Salesforce, Workday, SAP, HRMS, CRMs, data warehouses) Evaluate integration approaches and make build-vs-buy recommendations: native connectors, iPaaS platforms (Workato, Boomi), custom API development Review and validate solution designs created by Solution Architects; push back when designs are technically risky, over-engineered, or misaligned with customer … zones Technical Depth & Solution Design Capability Strong understanding of integration architectures: REST APIs, webhooks, iPaaS platforms, authentication protocols (OAuth, SAML, SSO) Ability to read API documentation, evaluate technical feasibility, and provide direction to engineering teams (you don’t write production code, but you can prototype and troubleshoot) Experience designing ...

Full Stack JavaScript Developer

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
working on a high demand website and have a key role with the Managing Director's ear. There will certainly be exposure to API development, as well as front end work using React. The successful candidate also has the chance to transition between web and mobile app development. … MySQLExposure to NativeScript or React NativeAngular (v4+)Ideally we are looking for a bright junior to mid-level developer with good fundamentals in software development and the ability to learn fast. You must be hands on and have strong experience in the stack but not always in time served. ...

Junior C# Developer - Fintech

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
Developer – FintechTo 60,000Quant is urgently looking for a Junior C# Software Engineer to join our high profile client. Current challenges greenfield trading platform development and Integration to other platforms Our client is a well known Prop Trading Business. The environment is that of Facebook or Google, relaxed open … require your skills in multithreading, concurrency, performance profiling and optimization. We are looking for potential not experience. You will be responsible for the full development lifecycle, where you will get a lot of freedom to decide on code base, technology and architecture. The more knowledge you gain about ...

Customer Engagement Manager

Location
Greater London, England, United Kingdom
NetSuite, Salesforce, Workday, SAP, HRMS, CRMs, data warehouses) Evaluate integration approaches and make build‐vs‐buy recommendations: native connectors, iPaaS platforms (Workato, Boomi), custom API development Review and validate solution designs created by Solution Architects; push back when designs are technically risky, over‐engineered, or misaligned with customer … zones Technical Depth & Solution Design Capability Strong understanding of integration architectures: REST APIs, webhooks, iPaaS platforms, authentication protocols (OAuth, SAML, SSO) Ability to read API documentation, evaluate technical feasibility, and provide direction to engineering teams (you don't write production code, but you can prototype and troubleshoot) Experience designing ...

ITap Group Developer Vacancy - Full Stack Engineer

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
working on a high demand website and have a key role with the Managing Director's ear. There will certainly be exposure to API development, as well as front end work using React. The successful candidate also has the chance to transition between web and mobile app development. … Angular (v4+) Nice to havePHP AngularJS (1.x)Ideally we are looking for a bright junior to mid-level developer with good fundamentals in software development and the ability to learn fast. You must be hands on and have strong experience in the stack but not always in time served. ...

C# Web Developer Fintech- Hastings

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
Tech: C# HTML5, Javascript, SQL, JQuery, GET Angular Challenge: Greenfield Investment platform, API development, industry specific challenges Firm: Fintech50 residential property peer to peer loans, Borough, 6 man flat Dev Team Pay: 45k, Bonus- 750 training budget, Pension, Life/Health, Flex/Home WorkingC# Web Developer FintechQuant … quiet, friendly environment with break-out rooms for planning and discussion. My client is based in Hastings VB.NET, C#, MVC 5 Entity Framework, Web API, Design Patterns ...

Fintech Software Engineer – Payments & Cloud

Location
Greater London, England, United Kingdom
Edenred is seeking a Software Engineer in London to contribute to the design and development of innovative fintech solutions. The candidate should have strong Java 8+ and SQL skills, familiarity with Spring Boot and RESTful API development, and a collaborative attitude. Key responsibilities include developing platform features ...

Junior CTO / Full Stack JavaScript Developer

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
will be working on a high demand website and have a key role with the CEO's ear. There will certainly be exposure to API development, as well as front end work using React. Managing outsourcing. Required, desirable and nice to have skills and exposure (the below also ...

Full Stack Developer

Hiring Organisation
Corus Consultancy
Location
Crawley, West Sussex, United Kingdom
Employment Type
Permanent
Salary
£50000 - £60000/annum
supporting modern digital services. This is a hands-on engineering role where you will work across the full technology stack, contributing to the design, development, testing and ongoing support of web applications and digital services. You will work within a multidisciplinary product team and collaborate with product managers, business … planning, backlog refinement, stand-ups, reviews and retrospectives. Identify and communicate delivery risks and technical issues at an early stage. Use modern AI-assisted development tools to improve coding, testing, debugging and documentation workflows. Work collaboratively with technical and non-technical colleagues to understand requirements and develop practical solutions. ...

Java Developer

Hiring Organisation
GTC Recruitment
Location
Birmingham, West Midlands (County), United Kingdom
Employment Type
Contract
Contract Rate
£650 - £700/day
hands-on Java engineer to work with a modern technology stack including Java, Spring Boot, AWS, Kafka and MongoDB, while contributing to the development of highly scalable, secure and resilient digital services. You’ll work as part of a multidisciplinary Agile team, collaborating with engineers, architects and delivery professionals … integration tests. Troubleshoot defects and complex technical issues. Contribute to the performance, resilience and operational stability of live services. Participate throughout the full software development lifecycle. Contribute to Agile ceremonies, code reviews and technical discussions. Collaborate with Software Engineers, Technical Architects and other delivery professionals. Contribute to engineering standards ...

Senior Backend Engineer

Hiring Organisation
Teya Solutions
Location
London, UK
Employment Type
Full-time
support critical business needs, ensuring scalability, performance, and reliability across Teya's systems. Take ownership of features and projects throughout the full software development lifecycle, including scoping, design, development, testing, deployment, and maintenance. Collaborate closely with cross-functional teams (including product, design, data science, security, and operations … scalability of products across the business. Contribute to process improvements, focusing on continuous integration, delivery, and deployment to ensure a smooth and stable development pipeline. Participate in code reviews, share feedback constructively, and help elevate the overall quality and performance of the team's output. Mentor and support fellow ...