251 to 275 of 352 API Development Jobs

IT Integrations Specialist

Hiring Organisation
Advance HE
Location
York, North Yorkshire, Yorkshire, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£55,000
deliver solutions that make a genuine difference to both colleagues and customers. As our Technical Integration Engineer you will: Design, build and maintain API integrations between core business platforms and third-party systems. Develop reliable REST-based and event-driven integrations, ensuring consistent and secure data flows. Support … compliant and scalable. Identify opportunities to improve automation, platform performance and reliability. What We're Looking For You'll bring hands-on experience of API development, system integration and designing robust technical solutions, together with the ability to see the bigger picture when connecting multiple platforms. ...

Technical Integration Engineer

Hiring Organisation
Advance HE
Location
Heslington, York, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
deliver solutions that make a genuine difference to both colleagues and customers. As our Technical Integration Engineer you will: Design, build and maintain API integrations between core business platforms and third-party systems. Develop reliable REST-based and event-driven integrations, ensuring consistent and secure data flows. Support … compliant and scalable. Identify opportunities to improve automation, platform performance and reliability. What We're Looking For You'll bring hands-on experience of API development, system integration and designing robust technical solutions, together with the ability to see the bigger picture when connecting multiple platforms. ...

Machine Learning Scientist III

Location
City of Westminster, England, United Kingdom
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 ...

Machine Learning Scientist III

Location
Greater London, England, United Kingdom
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 ...

Senior Python Developer: Trading & Risk Systems

Location
Greater London, England, United Kingdom
Responsibilities include building backend applications, data processing pipelines, and collaborating with financial teams. Proficiencies in SQL, leveraging libraries like Pandas and NumPy, and RESTful API development are essential. The role promises a dynamic environment in investment banking within a collaborative setting. #J-18808-Ljbffr ...

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 DEVELOPER

Location
Liverpool, England, United Kingdom
locations. The Department has complete ownership of our Microsoft Modern Workplace solutions combined with Microsoft Dynamics. JOB OBJECTIVE As a key member of our development team, you will be responsible for the end-to-end delivery of applications and services built on the Microsoft technology stack. This role involves … quality solutions that support and enhance business-critical systems, hosted primarily on the Microsoft Dataverse and Microsoft Azure platforms. Working across the full software development lifecycle, you will collaborate with stakeholders to translate requirements into scalable, maintainable solutions using Dynamics 365, Power Platform, C#, .NET, React and a broader ...

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 ...

SAP Technical Architect

Hiring Organisation
TXP Talent
Location
London, United Kingdom
Salary
£ 70 K
emerging technologies.Key ResponsibilitiesProvide technical leadership across SAP integration projects and initiatives.Design, prototype, and implement automation solutions that improve integration delivery.Identify opportunities to streamline SAP development, integration, testing, and deployment processes.Work closely with SAP delivery teams to ensure solutions are practical, scalable, and deliver measurable value.Lead technical proof-of-concepts … rapid innovation initiatives to evaluate new tools, technologies, and ways of working.Drive adoption of AI-assisted development, automation, and modern engineering practices.Define and measure key performance metrics to demonstrate improvements in delivery speed, quality, and efficiency.Produce technical recommendations, demonstrations, and business cases to support wider adoption of successful solutions.Support ...

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 ...

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 ...

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 ...

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 ...

Junior C# Developer – Fintech

Hiring Organisation
Quant Capital
Location
London, United Kingdom
Salary
£ 70 K
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 with time … will 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 ...

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. ...

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, United Kingdom
Salary
£ 70 K
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.Required, desirable … 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. ...

Platform Development Lead — .NET, Agile & High-Impact Delivery

Location
Belfast, Northern Ireland, United Kingdom
leading online travel company in Northern Ireland seeks a Development Manager to lead the team in developing its in-house reservation system, Hermes. This role involves ensuring high-quality engineering and adherence to Agile practices while overseeing enhancements and integrations. The ideal candidate will have strong experience in .NET … API development, and team leadership, and will be focused on continuous improvement and effective collaboration across departments. Full-time position with attractive benefits. #J-18808-Ljbffr ...

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 ...

Backend Engineer for Scalable EV Charging Platform

Location
Greater London, England, United Kingdom
powering our public EV charging platform, focusing on scalable, observable systems. You should have 2+ years Python experience, strong Git/CI/CD, API development (REST/GraphQL), and knowledge of databases. We value collaborative problem-solving and the ability to translate product needs into solid technical ...

Software Tech Lead

Hiring Organisation
Talent Locker
Location
Wiltshire, South West, United Kingdom
Employment Type
Permanent
strong backend/integration background and the confidence to influence technical direction. You should have strong experience with: Java and SQL Backend services and API development System integration and software architecture Automated testing and CI/CD Working across the stack, ideally with Angular or a similar framework ...