API Integration Jobs in London

76 to 100 of 130 API Integration Jobs in London

Project Manager

London, United Kingdom
Hybrid / WFH Options
Randstad (Schweiz) AG
motivated learner of new software Lover of organisation, problem solving and planning with a strong attention to detail Experience and Qualifications Previous Project Management experience or equivalent Exposure to API integration with 3rd party systems Experience working in a technical environment/software development environment Experience with Jira and Confluence tools Experience in the social housing or local More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Dynamics 365 Business Central Consultant - Remote - Inside IR35

South East London, London, United Kingdom
Hybrid / WFH Options
The Bridge (IT Recruitment) Limited
a remote contract, inside IR35. The key skills required for this Microsoft Dynamics 365 Business Central Consultant role are: Dynamic 365 Business Central/NAV Finance module AL ccoding API integrations Data migration If you do have the relevant experience for this contract Microsoft Dynamics 365 Business Central Consultant position, please do apply. More ❯
Employment Type: Contract, Work From Home
Rate: £625 - 650 per day
Posted:

Dynamics 365 Business Central Consultant - Remote - Inside IR35

England, Peninsula, Greater London, United Kingdom
Hybrid / WFH Options
The Bridge IT Recruitment
a remote contract, inside IR35. The key skills required for this Microsoft Dynamics 365 Business Central Consultant role are: Dynamic 365 Business Central/NAV Finance module AL ccoding API integrations Data migration If you do have the relevant experience for this contract Microsoft Dynamics 365 Business Central Consultant position, please do apply. More ❯
Employment Type: Contract
Rate: £625 - £650/day
Posted:

Full Stack Developer

London, United Kingdom
JD Studios
Full-Stack Development: Experience across front-end (React, Next.js, Tailwind) and back-end (Node.js, Firebase, Supabase) Web App Deployment: Able to deploy and scale responsive, cross-browser consumer websites API Integrations: Confident working with third-party APIs and building wrappers for AI tools AI Tooling & Frameworks: Familiarity with LangChain, OpenAI SDKs, or other AI orchestration stacks Product Sprints: You More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Product Engineer

London, United Kingdom
CivicMarketplace
and understanding how every part of the stack fits together. Excited to shape our technical architecture and apply AI to make the customer experience smarter and smoother. Ensure seamless API integrations, optimizing third-party services while maintaining platform flexibility. Balances speed, scalability, and technical debt - always with an eye on the next company milestone. Improve search and data access More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior FX Sales

London, United Kingdom
Ebury
global fintech company that empowers businesses to trade and grow internationally. It offers a comprehensive suite of products, including international payments and collections, FX risk management, trade finance, and API integrations. Founded in 2009 by Juan Lobato and Salvador García, Ebury is one of the fastest-growing global fintechs, with over 1,700 employees and 38 offices in more More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Enterprise Sales Manager - Payroll / Mass Payments

London, United Kingdom
Ebury
complex masspayment solutions to meet their diverse needs. The right applicant will also possess a deep understanding of mass payment rails(e.g. BACS, Faster Payments, SEPA, SWIFT, FX management, API integrations)and how they can deliver effective and scalable outcomes for our clients.You will be responsible for creating and driving demand across multiple industryverticals including Payroll, Insurance, Pension, Expense More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Data Engineer (Enterprise DataWarehouse Developer)

London, United Kingdom
LMAX Group
SSIS, etc ) or open source Meltano, Airbyte, and Airflow Proven experience with DBT (data build tool) Proficiency with business intelligence tools (Power BI, Tableau, SAP BI, or similar). Integration & Programming Hands-on experience with API development and integration (REST/SOAP) Proficiency in at least 1 object/procedural/functional language (e.g: Java, PHP, Python More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Trade Support Engineer

London, United Kingdom
Huxley Associates
processing, trade types, and straight-through processing. Strong knowledge of 3rd party trading and market data platform providers such as Bloomberg, Refinitiv, TT and Ffastfill. Familiarity and experience with API integrations, FIX onboarding and web services. Strong analytical and problem-solving skills with the ability to diagnose and resolve issues. Self-motivated and able to work independently as well More ❯
Employment Type: Permanent
Salary: £80000 - £100000/annum
Posted:

Backend Software Engineer Engineering London, UK

London, United Kingdom
Recraft, Inc
AI-powered applications , this role is for you. Key Responsibilities Design, develop, and maintain scalable backend services that support AI-powered features. Build and optimise APIs to ensure seamless integration between frontend, AI models, and databases. Ensure high performance, security, and reliability of backend infrastructure. Work with databases (SQL and NoSQL) to manage and structure large-scale datasets efficiently. … SRE principles, cloud technologies, and AI advancements. Requirements Proven experience as a backend engineer, software developer, or similar role. Proficiency in backend programming languages such as Go. Experience with API development and integration (REST). Strong knowledge of database management (PostgreSQL, Elastic, or Clickhouse is a plus). Deep understanding of DevOps practices as well as network, OS More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Lead Data Scientist

London, United Kingdom
Citigroup Inc
overall objective of this role is to contribute to continuous iterative exploration and investigation of business performance and other measures to gain insight and drive business planning. Responsibilities: Lead integration of functions with understanding of client core business functions and partner with multiple senior management teams to meet goals and deploy new products and process enhancements Solve the highest … PyTorch/TensorFlow, and FastAPI. Strong understanding of prompt engineering, RAG pipelines, vector databases (e.g., FAISS, Chroma), and LLM evaluation strategies. Familiarity with software engineering best practices, including: REST API design and integration Git version control CI/CD pipelines Cloud environments(e.g., AWS, Azure, GCP) and Docker Track record of building cross-functional collaborationacross engineering, product, and More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

IT Manager

London, United Kingdom
Hybrid / WFH Options
Salt Digital Recruitment
s retail technology ecosystem. What We're Looking For: Retail IT experience - Experience in retail or e-commerce is a MUST. Strong integrations expertise - Proven experience with data and API integrations to ensure smooth front and backend operations. Technical leadership - Hands-on experience managing IT infrastructure, vendors, and digital systems. Project management skills - Ability to lead IT initiatives, manage More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Pre-Sales Engineer UK & I

London, United Kingdom
Infraspeak
a team-selling environment At least 2/3 years of experience in pre-sales Past experience in international B2B within the SaaS industry is an advantage Knowledge of API integrations is an advantage. What do we offer? A challenging environment, where you will see the company (and yourself) grow to a worldwide reference in the field (some people More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Tech Lead - Platform

London, United Kingdom
Homerun B.V
and protocols like MCP. Experience using AI-augmented ecosystem for development like Cursor, Windsurf, Claude Code. Based in the UK or Europe Nice to haves Knowledge of OAuth/API user credential handling Experience with 3rd-party API integrations Some front end experience using Next.Js/Typescript/React Apply for the job Do you want to join More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Data Engineer

London, South East, England, United Kingdom
Hybrid / WFH Options
Robert Half
using Azure services Work with stakeholders to convert business requirements into scalable technical solutions Develop tabular and multidimensional data models and perform DAX queries within Power BI Support the integration and management of Microsoft Fabric as part of the evolving data architecture Participate in the full project lifecycle from design to deployment Optimise ETL/ELT processes and propose … enhancements to existing systems Implement and maintain API integrations Collaborate with users, analysts, and developers to drive data performance improvements Document data models, pipelines, and processes, ensuring clarity and maintainability Provide third-line support and resolve data-related tickets in a timely manner Required Skills & Experience: 2-3 years of experience in a data engineering or similar technical role More ❯
Employment Type: Full-Time
Salary: £60,000 - £65,000 per annum
Posted:

Software Development Instructor Coding Black Females

London, United Kingdom
Coding Black Females Ltd
to learn) in the following areas: Programming Fundamentals using Python Python Frameworks (e.g., Django, Flask) Version Control (e.g., Git, GitHub) Data Structures and Algorithms Testing and Debugging in Python API Development and Integration with Python (RESTful APIs) Database Management (e.g., SQL, PostgreSQL, MongoDB) Software Development Methodologies (e.g., Agile, Scrum) Person Specification: Experience delivering software development training or mentoring More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Software Engineering Lead (Golang)

London, United Kingdom
Different Technologies Pty Ltd
. Experience and Skills Essential: 1. Proven success as a technical team leader 2. Providing support and guidance to direct reports 3. Strong Golang skills and experience 4. Strong API development and integration experience 5. Strong Microservice experience 6. Strong GIT and CI/CD experience 7. TDD (Test Driven Development) experience 8. Experience with and a champion More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Data Consultant (Azure)

London, United Kingdom
Square One Resources
a 12-month contract working outside IR35. Job Responsibilities/Objectives Develop and deploy ETL pipelines for data cleansing using Azure-based tooling. Build and maintain outbound/inbound API endpoints for downstream systems (e.g. reporting tools, finance systems). Write scripts to generate unique client identifiers and validate data quality rules. Design and configure integration flows between … system, and other platforms (e.g. finance and HR tools). Implement field mapping and transformation logic in staging and production environments. Conduct connectivity testing and validate payloads across all integration points. Contribute to staged migration activities, including test loads, dry runs, and final go-live. Collaborate on Power Platform form logic (e.g. validation triggers, status handling). Configure and …/Experience Proven experience delivering technical solutions across Microsoft Dataverse, Azure Fabric, and Power Platform. Strong coding experience in one or more languages: Python, C#, Hands-on experience with API integrations, data pipelines, and transformation logic. Demonstrated expertise with modern delivery techniques - including TDD, pairing, infrastructure-as-code, and CI/CD pipelines, using tooling such as Azure DevOps More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Developer

London, United Kingdom
White Swan Data
inputs from social media and other unstructured online sources, which produce timely structured data for internal use in models and trading systems Implement and maintain relational database schemas and API integrations which interface the above with internal modeling and trading systems Enhance and refactor existing systems for scale and performance Monitor and optimize system performance to maintain and improve … RDBMS. Programming Proficiency : Strong skills in Java (Spring), experience in Python, and working knowledge of R Cloud & Infrastructure : Hands-on experience with Google Cloud Platform (GCP) and Docker containerization API Development : Experience building and integrating with RESTful APIs, particularly for real-time applications AI/LLM integration: Experience with design and delivery of analytics pipelines which include LLM More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Software Engineer

London, United Kingdom
White Swan Data
environment where your contributions directly impact our platform's success. Key Responsibilities Design, develop, and optimize BigQuery-based solutions for real-time, low-latency data processing Implement and maintain API integrations with multiple trading platforms Enhance and refactor existing model and trading strategy implementations for improved performance Design and implement BigQuery schemas for both real-time data processing pipelines … other traditional RDBMS. Programming Proficiency : Strong skills in Python and Java, with working knowledge of R Cloud & Infrastructure : Hands-on experience with Google Cloud Platform (GCP) and Docker containerization API Development : Experience building and integrating with RESTful APIs, particularly for real-time applications Low-Latency Systems : Understanding of performance optimization techniques and experience building resilient systems with strict latency More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Full Stack Developer

London, United Kingdom
May & Stephens
Full Stack Developer - Responsibilities Collaborate with a small team of developers, contributing to daily code reviews and merge requests. Develop across the entire product stack, including: Frontend interface Backend API layer Analytics/data processing engine Lead projects independently, from requirements gathering through to deployment. Mentor junior developers to support their technical growth. Solve complex challenges related to data … Version control: Git Comfortable working with Python and JavaScript professionally, with experience in Django and React. Ability to build data-intensive applications and manage complex backend logic, including external API integrations. Experience in creating responsive user interfaces that function across browsers and mobile devices. Capable of working independently and taking ownership of technical projects. Strong analytical skills and problem More ❯
Employment Type: Permanent
Salary: £50000 - £60000/annum
Posted:

Senior Full Stack Engineer (.Net/React)

London, United Kingdom
Hybrid / WFH Options
Honeycombsoft
development using React and TypeScript. Understanding of database technologies like PostgreSQL/Timescale and MySQL. Familiarity with messaging systems like RabbitMQ and real-time technologies like SignalR. Knowledge of API development and integration (REST, FIX Protocol). Nice to have: DevOps experience with Azure and Terraform (Infrastructure as Code). Previous exposure to trading operations, especially derivatives, spreads More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Frontend Software Engineer

London, United Kingdom
PhysicsX Ltd
end-to-end ownership is key. What you will do Build & Evolve the Platform: Develop and maintain a frontend that supports complex ML workflows-from 3D visualizations to seamless API integrations Optimise User Experience: Ensure our interface is visually appealing and high-performing using advanced caching strategies, performance monitoring, and accessibility best practices Drive Innovation: Leverage modern tools and … and state management (Recoil, Redux, MobX) Performance Optimisation: Code splitting, lazy loading, and React performance tools APIs & Data Handling: REST, Long Polling, WebSocket, GraphQL, caching strategies, and data-heavy API interactions UX & UI: Responsive design, design systems, and prototyping (Figma, Excalidraw) Testing & Quality: Unit and integration (Jest), E2E testing (Cypress) Security & Accessibility: OAuth/JWT, XSS/CSRF More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

AI Workflow Engineer

London, United Kingdom
Hybrid / WFH Options
Dept Holding B.V
reporting, and media production workflows. Build custom AI solutions using AI & ML frameworks, and cloud technologies Implement workflow automation using low-code/no-code platforms when applicable Create API integrations between marketing tools, CRM systems, and content management platforms using MCP or alternative protocols. Perform statistical analysis including A/B testing, causal inference, and experimental design to … build the business case of POC's Work closely with data engineers, media consultants and clients to ensure seamless integration of your solution to create business impact Translate business requirements into technical workflow specifications Conduct demos and training sessions to help teams adopt new AI-powered workflows Stay current with emerging AI workflow tools and automation platforms, and Marketing More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Data Scientist

London, United Kingdom
Kantar Group Limited
through detailed analysis. Collaborate with cross-functional teams to integrate analytics solutions into business operations. Analyse large datasets to uncover patterns, trends, and insights that drive strategic decisions. Assist API integrations to ensure seamless functionality and data flow between systems. Communicate technical findings effectively to stakeholders through visualisations and clear reports. Establish and monitor key performance indicators to measure … through detailed analysis. Collaborate with cross-functional teams to integrate analytics solutions into business operations. Analyse large datasets to uncover patterns, trends, and insights that drive strategic decisions. Assist API integrations to ensure seamless functionality and data flow between systems. Communicate technical findings effectively to stakeholders through visualisations and clear reports. Establish and monitor key performance indicators to measure More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:
API Integration
London
10th Percentile
£52,500
25th Percentile
£57,500
Median
£75,000
75th Percentile
£100,000
90th Percentile
£117,750