26 to 50 of 76 API Integration Jobs in London

Senior Applied AI Engineer, Finance

Hiring Organisation
Richard Wheeler Associates
Location
Central London, London, United Kingdom
Employment Type
Permanent
Python Experience building and deploying LLM applications (OpenAI, Anthropic, Gemini, etc.) Deep familiarity with RAG methodologies, embeddings, and vector databases (Pinecone, Weaviate, pgvector) Robust API integration experience, including working with third-party datasets, web APIs, or scrapers A product mindset, enjoys crafting scrappy prototypes that evolve into polished ...

AI Engineer

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £90,000 per annum
evaluation and monitoring frameworks. Responsibilities: Build and operate AI-powered products that deliver measurable outcomes. Develop production-ready AI agents on GCP, including secure API integrations. Integrate agent capabilities into applications using MCP servers and supporting tools. Develop reliable RAG pipelines, including ingestion, chunking, metadata and vector search. Required ...

Principal Solutions Consultant

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
business validation during the sales cycle — creating and delivering compelling demos, proofs‐of‐concept, and executive presentations. Provide hands‐on technical guidance across API integrations, data‐workflow design, architecture, troubleshooting, and best‐practice implementation, supported by clear documentation. Partner with regional commercial teams - Sales, Customer Success, GPRG, Intelligence ...

Mainframe System Automation Engineer - Finance - Nottingham

Hiring Organisation
Salt
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£300 - £700 per day
Dash for CA7 administration BMC AMI Ops Automation BMC Control-M Output Management Splunk dashboard and alert development SAS knowledge Windows Server administration REST API integration Familiarity with ServiceNow and ITIL processes Knowledge of CA7 operations and Control-M scheduling Basic web development skills File transfer protocols ...

AI Engineer, E2E Product Delivery, Finance

Hiring Organisation
Richard Wheeler Associates
Location
Central London, London, United Kingdom
Employment Type
Permanent
Python Experience building and deploying LLM applications (OpenAI, Anthropic, Gemini, etc.) Deep familiarity with RAG methodologies, embeddings, and vector databases (Pinecone, Weaviate, pgvector) Robust API integration experience, including working with third-party datasets, web APIs, or scrapers A product mindset, enjoys crafting scrappy prototypes that evolve into polished ...

Creative Engineer

Hiring Organisation
Tata Consultancy Services
Location
City of London, London, United Kingdom
Good to have: Exposure to AR/VR development (Unity, Unreal Engine). Knowledge of generative art, motion design, or data visualisation. Experience with API integration and cloud platforms. Rewards & Benefits TCS is consistently voted a Top Employer in the UK and globally. Our competitive salary packages feature ...

Senior Front End Developer

Hiring Organisation
Evantis Technology
Location
City of London, London, United Kingdom
user experience, and testing new product ideas. This role is heavily frontend-focused, working closely with product and design teams while also contributing to API integrations where needed. They’re looking for someone who: Has strong React, JavaScript and TypeScript experience Has built modern frontend applications or product platforms ...

Engineering Team Lead

Hiring Organisation
Thyme
Location
City of London, London, United Kingdom
beneficial: JavaScript frameworks such as React or Next.js Backend development with Node.js, C#, or similar Cloud platforms (AWS or equivalent) Building and maintaining API integrations and distributed systems Experience using AI-assisted development tools or modern developer productivity workflows would be a plus. Get in touch ...

Full-Time .Net MAUI Mobile App Developer (iOS & Android) — Remote

Hiring Organisation
Astera
Location
Central London / West End, London, United Kingdom
smooth transitions, and responsive layouts User onboarding, application flows, and status tracking Admin-driven workflows and internal review tools Secure authentication and backend/API integrations App Store and Google Play deployment Tech expectations .NET MAUI strongly preferred Proven experience implementing apps directly from Figma Strong mobile UI/ ...

Fenergo (KYC) System Support - Contract

Hiring Organisation
Marks Sattin
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£250 - £350 per day
Lifecycle Management (CLM), onboarding workflows, and financial compliance processes. The ideal candidate will support, configure, and enhance Fenergo-based KYC systems while ensuring seamless integration across enterprise platforms. Key Responsibilities Deliver ongoing support and upkeep for Fenergo CLM applications. Set up and oversee KYC onboarding processes, including policies … rule configurations. Investigate and fix production-related issues promptly to reduce downtime. Partner with integration teams to ensure smooth data exchange across connected systems. Assist with API connectivity and maintain stable system interactions. Track system health and contribute to analytics and reporting for onboarding and lifecycle activities. Support ...

OpenText Expert SME (m/f) - Remote + London

Hiring Organisation
1st solution consulting gmbh
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
skills. Activities and Deliverables: Design, refactor, implement, and validate Operations Orchestration (OO) workflows to enable automated life cycle operations using supported APIs and integration mechanisms. Engineering, refactoring, documentation, and testing of orchestration flows, adapting existing flows. In scope Flows are: - Create Virtual Machine - Modify Virtual Machine - Power On, Power … Strong experience with OpenText Cloud Service Automation (CSA)/Operations Orchestration (OO) workflow development and content pack engineering - Proven experience refactoring automation workflows - Strong API integration skills (REST, authentication, error handling, versioning) - Solid understanding of virtualization platforms, VM life cycle operations and infrastructure automation - Experience with testing, validation ...

Head of SRE Production Support

Hiring Organisation
Huxley Associates
Location
London, United Kingdom
Employment Type
Permanent
Salary
£130000 - £180000/annum
Azure preferred, AWS considered; IAM, managed services, automated and auditable deployment pipelines, secrets management Nice to Have Financial market connectivity - exchange feed management, broker API integration, clearing and settlement systems ITIL, SRE, or equivalent framework adoption; experience introducing error budgets into an engineering organisation Python or Bash scripting ...

Cloud Security Engineer (Automation & Tooling) - Engine by Starling

Hiring Organisation
Starling Bank
Location
London, UK
Employment Type
Full-time
verified and encrypted at scale. Unified Vulnerability Orchestration: Architecting a custom "single pane of glass" for security data. You will build Go-based API integrations and microservices that bridge scanning engines, dependency trackers, and internal portals into a seamless, automated ecosystem. Compliance as Code: Building the automated systems that ...

Senior Mobile Engineer React Native

Hiring Organisation
Client Server
Location
North London, London, United Kingdom
Employment Type
Permanent, Work From Home
release and ongoing optimisation. You'll be working on real-world features such as secure user authentication, role-based access control (RBAC) and seamless integration with backend and cloud services. Location/WFH: You'll be based in fantastic new offices in London that offer a wide range … delivering ap updates, patches or configuration changes You have a good understanding of mobile performance optimisation (e.g. FlatList vs ScrollView) You have experience with API integration and authentication flows You're collaborative and pragmatic with great communication skills Apply now to find out more about this Senior Mobile ...

GIS Technician

Hiring Organisation
Morson Edge
Location
North West London, London, United Kingdom
Employment Type
Contract, Work From Home
creative and innovative GIS solutions using the latest set of tools available within the ESRI suite, and self-developed custom solutions to specific requests -Integration of 3D BIM models into GIS - data processing and visualisation -Develop and maintain bespoke GIS interfaces and data to provide user access to complex … ArcGIS Pro, ArcGIS Enterprise, ArcGIS Online, Experience Builder, Dashboards, Field Apps - Survey123/FieldMaps, Arcade Safe FME - Essential Arcade/Python/JavaScript SQL API integration CAD - Bentley Open Buildings Designer/Autodesk Appreciation of coordinate systems and conversion between them Experience working with Ordnance Survey datasets ...

Operations Manager-Digital & Business Process excellence

Hiring Organisation
DiSRUPT Agency
Location
City of London, London, England, United Kingdom
Employment Type
Full-Time
Salary
£45,000 - £55,000 per annum
communication and influencing skills; high accuracy and accountability. Desirable: experience in insurance/financial services, portal/app-based journeys and UX/UI, API integrations, and scaling or early-stage businesses. Mindset Commercial, analytical, technically minded. Hands-on, practical, and strategic. Curious, improvement-focused, calm under pressure, collaborative ...

AI Software Engineer

Hiring Organisation
Fruition Group
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 80,000 - 100,000 Annual
engineering teams AI Engineer Requirements Essential: Strong software engineering foundations with a production mindset Proven hands-on experience with Large Language Models (LLMs), including API integrations, prompt engineering, agent workflows, and Retrieval-Augmented Generation (RAG) systems Experience shipping AI-powered features into production environments Proficiency in at least ...

AI Software Engineer

Hiring Organisation
Fruition Group
Location
North West London, London, United Kingdom
Employment Type
Permanent, Work From Home
engineering teams AI Engineer Requirements Essential: Strong software engineering foundations with a production mindset Proven hands-on experience with Large Language Models (LLMs), including API integrations, prompt engineering, agent workflows, and Retrieval-Augmented Generation (RAG) systems Experience shipping AI-powered features into production environments Proficiency in at least ...

Python Full Stack Developer

Hiring Organisation
Syntax Consultancy Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£550/day Inside IR35
Digital transformation business specialising in Government projects: Key experience, responsibilities + tasks: Strong Python development expertise , develop and maintain Python code for data processing, API development and integration with the Azure Databricks environment. Senior experience in software development, with a focus on both front-end and back ...

Azure Cloud Architect (EUC)

Hiring Organisation
Opus Recruitment Solutions Ltd
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£600 - £650 per day
basis, with occasional office visits to London when required. Skills & experience needed: Strong hands-on expertise in Microsoft Azure across networking, compute, storage, and integration services Skilled in designing secure Azure network architectures: VNets, ExpressRoute/VPN, firewalls, load balancers, DNS, routing Experience delivering scalable compute solutions … sets, AKS, App Services, serverless patterns Proficient with Azure storage technologies: Blob, File, Disk , plus backup and DR/resilience patterns Deep knowledge of API integration, messaging, and event-driven architectures Advanced Identity & Access Management capability: Entra ID/Azure AD, RBAC, Conditional Access, Privileged Access Proven track ...

Senior OpenText CSA/OO SME (12-Month Contract)

Hiring Organisation
Templeton and Partners
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
complex OpenText OO workflows to enhance automation efficiency Drive VM life cycle automation workflows (create, modify, resize, power operations) Implement and validate REST-based API integrations Deliver high-quality content packs , along with clear, comprehensive technical documentation Collaborate with cross-functional teams across global locations to ensure consistent delivery … standards Must-Have Experience Proven expertise with OpenText Cloud Service Automation (CSA) and Operations Orchestration (OO) Strong background in workflow refactoring , API integration , and troubleshooting Solid understanding of VM life cycle automation and related infrastructure processes Ability to work in a fast-paced, distributed, hybrid environment ...

Mobile Engineer KMP - Fitness

Hiring Organisation
Client Server
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£75,000
application services, building shared KMP modules and platform-specific implementations across Android and iOS. You'll work on business logic, networking, domain layers and API integrations, collaborating closely with backend engineers, product, design and QA to deliver end-to-end features. Location/WFH: You'll join a friendly … About you: You have strong mobile application development experience You have experience with Kotlin Multiplatform (KMP) for Android and iOS native development You have API integration experience You've worked on complex applications with large user bases You have end-to-end mobile feature development experience ...

Salesforce Developer

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £550/day
quality both matter What We're Looking For Proven experience as a Salesforce Developer in complex environments Strong skills in Apex, Lightning Web Components, API integrations Experience with Marketing Cloud (desirable but not essential) Ability to pick up an existing project quickly and deliver high-quality work from ...

Senior Full Stack Engineer

Hiring Organisation
Trust In SODA
Location
City of London, London, United Kingdom
robust, scalable backend. What You Bring to the Table React Node/TypeScript/JavaScript Cloud: AWS, Azure, or GCP. APIs: API design and integration (REST & GraphQL). AI Tooling: Confident using AI-boosted environments to ensure quality (Claude or similar). The Cherry ...

Solution Architect (DV Security Clearance)

Hiring Organisation
CGI
Location
London, UK
Employment Type
Full-time
will translate evolving business needs into clear, actionable designs, leading workshops and technical discussions that influence strategic direction. You will champion event-driven and integration patterns, ensuring high availability, performance, and compliance, while fostering a collaborative environment where innovation and continuous improvement thrive. Lead & Shape Architecture … this role To succeed in this role, you will bring strong experience in solution architecture within complex, enterprise environments, particularly across event-driven and integration platforms. You will combine technical depth with consultative skills, enabling you to influence stakeholders, guide delivery teams, and ensure solutions align with strategic objectives. ...