1 to 25 of 117 API Integration Jobs in London

features, building integrations, and enabling smooth deployment of complex software products into client environments. This is a hands-on engineering role focused on writing and maintaining code to support integration pipelines, APIs, and data flows—working as part of a collaborative, high-performing product and engineering team. Location: Central London – minimum 3 days per week onsite Salary … Developer, ideally within a SaaS or cloud-based environment Solid programming skills in at least one modern language (e.g. Python, JavaScript, TypeScript, Java, Go, etc.) Experience designing and building API-driven integrations and working with third-party platforms This company values an excellent academic history so is looking for a 2:1 or above in Computer Science, Engineering, Mathematics … and external technical teams A 2:1 or above in Computer Science, Engineering, Mathematics, or a related STEM subject Responsibilities for Software Integrations Engineer Design, develop and maintain robust integration services and APIs to support customer onboarding and custom deployments Work closely with client-side technical teams to understand integration requirements and build tailored solutions Write clean, scalable More ❯

features, building integrations, and enabling smooth deployment of complex software products into client environments. This is a hands-on engineering role focused on writing and maintaining code to support integration pipelines, APIs, and data flows—working as part of a collaborative, high-performing product and engineering team. Location: Central London – minimum 3 days per week onsite Salary … Developer, ideally within a SaaS or cloud-based environment Solid programming skills in at least one modern language (e.g. Python, JavaScript, TypeScript, Java, Go, etc.) Experience designing and building API-driven integrations and working with third-party platforms This company values an excellent academic history so is looking for a 2:1 or above in Computer Science, Engineering, Mathematics … and external technical teams A 2:1 or above in Computer Science, Engineering, Mathematics, or a related STEM subject Responsibilities for Software Integrations Engineer Design, develop and maintain robust integration services and APIs to support customer onboarding and custom deployments Work closely with client-side technical teams to understand integration requirements and build tailored solutions Write clean, scalable More ❯

business goals and strategic objectives. Architectural Alignment: Ensure alignment with KF architecture and IT standards, principles and patterns and best practices, or highlighting where this is not the case API Integration: Integrate external APIs and other data sources to bring near real-time data and updates into the system. Data: Provide expertise in data modelling, data management and … for CRM deliveries. Security: Ensure the security, privacy, and integrity of all data across the system. Documentation: Create comprehensive technical documentation to support the system's design, implementation, and integration processes (e.g. C4 modelling, document as code with Mermaid/PlantUML). API Integration: Integrate external APIs and other data sources to bring near real-time data More ❯

Proven experience with LangGraph or LangChain Strong Python skills and experience working with LLMs Familiarity with RAG pipelines Experience building chatbots or agent-based systems Knowledge of real-time API integration Understanding of prompt engineering, token limits, and system tuning Bonus: Experience in sports analytics, fantasy sports, or betting tech TO BE CONSIDERED... Please either apply by clicking … online or emailing me directly at KEY SKILLS LangGraph, OpenAI, Python, Chatbots, RAG, Prompt Engineering, LLMs, API Integration, Sports Data More ❯

Proven experience with LangGraph or LangChain Strong Python skills and experience working with LLMs Familiarity with RAG pipelines Experience building chatbots or agent-based systems Knowledge of real-time API integration Understanding of prompt engineering, token limits, and system tuning Bonus: Experience in sports analytics, fantasy sports, or betting tech TO BE CONSIDERED... Please either apply by clicking … online or emailing me directly at KEY SKILLS LangGraph, OpenAI, Python, Chatbots, RAG, Prompt Engineering, LLMs, API Integration, Sports Data More ❯

delivery capability. Participate in workshops, providing quality assurance and gathering requirements to shape project deliverables. Understand the Bank's As-Is Architecture components including processes, capabilities, applications, technologies and integration Formulate and document project artefacts that help to articulate desired direction of travel: oDesign principles and policies oTechnical Requirements (Functional and Non-Functional) oTechnical standards oKey Decisions oSolution briefs … of current developments in architecture and related disciplines, tools and markets Experience in trade lifecycle management technical transformation, including experience with Finastra Summit (Treasury and/or Commercial Lending), integration of treasury systems with finance systems (e.g. S/4HANA), ActiveViam Atoti Business Solutions and solutions built on QuantLib Integration and API Skills: Knowledge of API integration and interfacing technologies Programming skills in one or more languages e.g. Python, Java, SQL Experience in payment systems (incl. experience with SWIFT) Ability to work across various technologies within the specific domain Understanding of different project delivery lifecycle frameworks Strong analytical and problem-solving skills Ability to develop deep business knowledge and offer advice that spans across More ❯

delivery capability. Participate in workshops, providing quality assurance and gathering requirements to shape project deliverables. Understand the Bank's As-Is Architecture components including processes, capabilities, applications, technologies and integration Formulate and document project artefacts that help to articulate desired direction of travel: o Design principles and policies o Technical Requirements (Functional and Non-Functional) o Technical standards o … of current developments in architecture and related disciplines, tools and markets Experience in trade lifecycle management technical transformation, including experience with Finastra Summit (Treasury and/or Commercial Lending), integration of treasury systems with finance systems (e.g. S/4HANA), ActiveViam Atoti Business Solutions and solutions built on QuantLib Integration and API Skills: Knowledge of API integration and interfacing technologies Programming skills in one or more languages e.g. Python, Java, SQL Experience in payment systems (incl. experience with SWIFT) Ability to work across various technologies within the specific domain Understanding of different project delivery lifecycle frameworks Strong analytical and problem-solving skills Ability to develop deep business knowledge and offer advice that spans across More ❯

concurrent applications and services. Skilled in building CLI tools, REST APIs, and interacting with external services. Familiar with go modules, error handling patterns, testing, and code organization. AWS Services & API Integration Deep experience using AWS SDKs in both Python (boto3) and Go (aws-sdk-go-v2) to: Interact with services like EC2, S3, IAM, CloudWatch, and Lambda. Automate … infrastructure provisioning and manage cloud resources. Handle IAM roles, credential management, and secure service integrations. LDAP, Vault, JIRA/Confluence, Kubernetes Integration in Python & Go LDAP: Authentication and user/group management using ldap3 in Python. Experience with enterprise directories such as OpenLDAP and Active Directory. HashiCorp Vault: Secure secret management using the hvac Python client. Automated retrieval and … renewal of secrets and tokens. JIRA & Confluence: Integration using jira and atlassian-python-api for automating tasks, ticket creation, and documentation workflows. Kubernetes: Working with the Kubernetes API in Python using the official kubernetes client. Automation of deployment tasks, pod management, and cluster introspection. Testing & Quality Assurance Python Testing: Experience with pytest, unittest, and mocking tools (unittest.mock More ❯

recognition, document processing, product development and more. You will present your findings to customers alongside sales. Technical integrations: You will work with our product team to assist with the integration of new models and ML-Ops tools into V7. Marketplace Integration: Develop and maintain the integration into major cloud marketplaces so users can more easily set up … short timeframes. You are a skilled multi-tasker and familiar with project management tools like Linear. Who you are: Experience delivering Large Language Model projects with customers, including LLM API integration, up-to-speed knowledge of foundation models, SFT (Supervised Fine-Tuning), prompt engineering, RAG (Retrieval-augmented generation) and/or measuring AI accuracy. Two years + experience More ❯

Experience with ServiceNow platform: Including modules like ITSM, ITOM, HRSD, CSM, and CMDB. ServiceNow Scripting: Client Scripts, Business Rules, Script Includes, UI Policies, and UI Actions. REST/SOAP API Integration: Building and consuming APIs for third-party integrations. ServiceNow Workflows: Designing and implementing Flow Designer and Legacy Workflow Editor. Service Portal Development: Custom widgets, pages, and themes. More ❯

Experience with ServiceNow platform: Including modules like ITSM, ITOM, HRSD, CSM, and CMDB. ServiceNow Scripting: Client Scripts, Business Rules, Script Includes, UI Policies, and UI Actions. REST/SOAP API Integration: Building and consuming APIs for third-party integrations. ServiceNow Workflows: Designing and implementing Flow Designer and Legacy Workflow Editor. Service Portal Development: Custom widgets, pages, and themes. More ❯

Experience with ServiceNow platform: Including modules like ITSM, ITOM, HRSD, CSM, and CMDB. ServiceNow Scripting: Client Scripts, Business Rules, Script Includes, UI Policies, and UI Actions. REST/SOAP API Integration: Building and consuming APIs for third-party integrations. ServiceNow Workflows: Designing and implementing Flow Designer and Legacy Workflow Editor. Service Portal Development: Custom widgets, pages, and themes. More ❯

Experience with ServiceNow platform: Including modules like ITSM, ITOM, HRSD, CSM, and CMDB. ServiceNow Scripting : Client Scripts, Business Rules, Script Includes, UI Policies, and UI Actions. REST/SOAP API Integration : Building and consuming APIs for third-party integrations. ServiceNow Workflows : Designing and implementing Flow Designer and legacy Workflow Editor. Service Portal Development : Custom widgets, pages, and themes. More ❯

Experience with ServiceNow platform: Including modules like ITSM, ITOM, HRSD, CSM, and CMDB. ServiceNow Scripting : Client Scripts, Business Rules, Script Includes, UI Policies, and UI Actions. REST/SOAP API Integration : Building and consuming APIs for third-party integrations. ServiceNow Workflows : Designing and implementing Flow Designer and legacy Workflow Editor. Service Portal Development : Custom widgets, pages, and themes. More ❯

Agile environment. Experience with the Spring ecosystem and Hibernate. Familiarity with AWS or Azure and DevOps technologies like Docker, Kubernetes, and Terraform. Proficiency in CI/CD pipelines and API integrations. Experience in financial services or banking is a plus. Work from our client's London office. Up to 25 business days of annual leave. Professional development programs, including More ❯

delivery of display and travel ads across Expedia's white-label and partner platforms. We're building the next generation of video ad infrastructure , AI-powered tooling , and Rapid API integrations to deliver smarter, more engaging ad experiences. This is a frontend-heavy full stack role , ideal for engineers who want to grow across the stack while focusing on More ❯

impact fintech environment. Key Responsibilities Develop deep subject matter expertise in the company's product suite, including APIs, data workflows, and SSI logic Support client onboarding by defining data integration methods and configuring ingestion tools Configure and test API connectivity for seamless data transmission between clients and the platform Provide best-practice guidance and training to clients, including … thrive in environments where you can make a real impact. Skills & Experience Required Experience delivering technology-based services in a client-facing role Strong knowledge of REST APIs and API integration Hands-on experience working with XML data Familiarity with AWS and API connectivity in cloud environments Excellent analytical and logical problem-solving skills Meticulous attention to More ❯

impact fintech environment. Key Responsibilities Develop deep subject matter expertise in the company's product suite, including APIs, data workflows, and SSI logic Support client onboarding by defining data integration methods and configuring ingestion tools Configure and test API connectivity for seamless data transmission between clients and the platform Provide best-practice guidance and training to clients, including … thrive in environments where you can make a real impact. Skills & Experience Required Experience delivering technology-based services in a client-facing role Strong knowledge of REST APIs and API integration Hands-on experience working with XML data Familiarity with AWS and API connectivity in cloud environments Excellent analytical and logical problem-solving skills Meticulous attention to More ❯

applications, especially within Agile financial environments . If you're passionate about building secure, scalable, and high-performing solutions and have strong experience in Java, Spring Boot, MuleSoft, and API integration , we’d love to hear from you! Key Responsibilities: Build and enhance platforms using Java, Spring Boot, and MuleSoft or equivalent integration tools. Develop and manage More ❯

Experience with ServiceNow platform: Including modules like ITSM, ITOM, HRSD, CSM, and CMDB. ServiceNow Scripting: Client Scripts, Business Rules, Script Includes, UI Policies, and UI Actions. REST/SOAP API Integration: Building and consuming APIs for third-party integrations. ServiceNow Workflows: Designing and implementing Flow Designer and Legacy Workflow Editor. Service Portal Development: Custom widgets, pages, and themes. More ❯

to translate business requirements into technical solutions, breaking down complex features into manageable deliverables Performance & scalability : Optimise system performance across our distributed architecture, identifying bottlenecks and implementing solutions DevOps integration : Contribute to our deployment pipeline, working with our custom Kitt CLI tools and Kubernetes infrastructure to ensure smooth releases Documentation & standards : Establish and maintain technical documentation, coding standards, and … you will have opportunity to get to grips with new technologies. Backend & Microservices Go - Primary language for our 40+ microservices gRPC & Protocol Buffers - Inter-service communication GraphQL - Client-facing API gateway MySQL, PostgreSQL, Redis - Data storage and caching Google Cloud Pub/Sub - Event-driven architecture Frontend & Mobile TypeScript - Primary frontend language React & Next.js - Web applications React Native & Expo … Mobile applications CSS, CSS-in-JS - Styling GraphQL Codegen - Type-safe API integration Artificial Intelligence OpenAI & Gemini - We use OpenAI models to ease our internal teams workflows, as well as automating some time intensive manual tasks. We're looking to bring AI to the forefront of our operational workflows. Infrastructure & DevOps Kubernetes - Container orchestration Docker - Containerisation Terraform - Infrastructure More ❯

modules like ITSM, ITOM, HRSD, CSM, and CMDB. ServiceNow Scripting: Client Scripts, Business Rules, Script Includes, UI Policies, and UI Actions is also required. Experience of REST/SOAP API Integration: Building and consuming APIs for third-party integrations. Knowledge of ServiceNow Workflows: Designing and implementing Flow Designer and legacy Workflow Editor and Service Portal Development: Custom widgets More ❯

Experience with ServiceNow platform: Including modules like ITSM, ITOM, HRSD, CSM, and CMDB. ServiceNow Scripting: Client Scripts, Business Rules, Script Includes, UI Policies, and UI Actions. REST/SOAP API Integration: Building and consuming APIs for third-party integrations. ServiceNow Workflows: Designing and implementing Flow Designer and legacy Workflow Editor. Service Portal Development: Custom widgets, pages, and themes. More ❯

Experience with ServiceNow platform: Including modules like ITSM, ITOM, HRSD, CSM, and CMDB. ServiceNow Scripting: Client Scripts, Business Rules, Script Includes, UI Policies, and UI Actions. REST/SOAP API Integration: Building and consuming APIs for third-party integrations. ServiceNow Workflows: Designing and implementing Flow Designer and legacy Workflow Editor. Service Portal Development: Custom widgets, pages, and themes. More ❯

Experience with ServiceNow platform: Including modules like ITSM, ITOM, HRSD, CSM, and CMDB. ServiceNow Scripting: Client Scripts, Business Rules, Script Includes, UI Policies, and UI Actions. REST/SOAP API Integration: Building and consuming APIs for third-party integrations. ServiceNow Workflows: Designing and implementing Flow Designer and Legacy Workflow Editor. Service Portal Development: Custom widgets, pages, and themes. More ❯