1 to 25 of 149 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 ❯

with Notebooks, Pipelines, and Workflows: Utilise Notebooks (e.g., Jupyter, Databricks) for data exploration, analysis, and reporting. Design and optimise data workflows to streamline key processing tasks, enhancing operational efficiency. API Integration & Data Ingestion: Integrate external and internal APIs to ingest data into our systems, ensuring smooth and consistent data integration. Automate the API data ingestion processes to … Fabric Data Engineer, with expertise in Microsoft Fabric, Azure, and Python. Proven experience in designing and implementing ETL pipelines, managing notebooks, and optimising data workflows. Solid experience working with API integration and data ingestion from various sources. Technical Skills: Proficiency in Python for building data pipelines, automation, and data manipulation. Expertise in Azure cloud services and Microsoft Fabric. … Knowledge of ETL processes, data modelling, and data integration techniques. Understanding of AI technologies and experience working on AI-driven projects (advantageous). Familiarity with Power Automate for automating business processes (optional). Soft Skills: Strong communication skills, with the ability to explain complex technical concepts to non-technical stakeholders. Excellent problem-solving abilities, with a focus on data 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 ❯

for an experienced Guidewire Cloud Architect to lead the architecture, design, and implementation of Guidewire Cloud Platform (GWCP) solutions for insurance and reinsurance carriers. As part of a System Integration (SI) partner team, you will play a critical role in modernizing core insurance systems, enabling seamless integration, and driving cloud transformation initiatives. You will collaborate with insurance carriers … reinsurance carriers. Develop cloud-native architectures leveraging AWS and Azure to support core insurance applications. Develop and implement the solutions for Guidewire on-prem to cloud. Define and implement API-led, event-driven, and microservices-based integration strategies for PolicyCenter, BillingCenter, ClaimCenter, Reinsurance Management. Establish best practices for Guidewire DataHub, InfoCenter, and AI-driven analytics solutions. Drive legacy … strategies from on-premises systems to Guidewire Cloud. Ensure compliance with regulatory, security, and industry standards for insurance and reinsurance businesses. Solution and Develop Guidewire Cloud based APIs. System Integration & Implementation: Lead end-to-end integration between Guidewire applications and external platforms like CRM, Payments, AI models, Data Lakes, Catastrophe Risk Modelling Systems (RMS, AIR). Define cloud 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 ❯

to provide strategic direction and leadership across enterprise systems. This pivotal role is responsible for shaping and governing the enterprise architecture with a focus on data, business intelligence, system integration , and analytics within ERP environments. You will play a critical role in driving digital transformation , legacy modernisation, and cloud adoption while ensuring high standards of data governance and system … units. Key Responsibilities: Provide strategic and technical leadership across enterprise systems, particularly ERP and BI platforms. Lead enterprise-wide architecture planning, ensuring scalable, secure, and integrated systems. Oversee system integration initiatives across ERP, CRM, and bespoke applications. Drive digital transformation , including legacy system modernisation and cloud migration strategies. Collaborate with cross-functional teams (operations, finance, IT, etc.) to convert … as Movex, Infor M3 (experience with other ERP systems also considered). Business Intelligence & Analytics : Strong knowledge of Power BI , semantic modelling (DAX), financial reporting systems, and advanced analytics. API & Integration : Proven experience with REST API integrations using Node.js and/or Python . Database Technologies : Proficient with relational databases (e.g., SQL Server, PostgreSQL) and NoSQL (e.g. More ❯

technical audience Define and maintain a coherent data architecture spanning customer, operational, and analytical domains. Design semantic models and logical data layers to support trusted reporting and analytics. Establish integration patterns between customer platforms and back-office systems (e.g. Finance, HR, CRM). Recommend standards for data modelling, master/reference data, and metadata governance. Collaborate with engineering, product … with business needs. Evaluate third-party APIs and reverse-engineer live system data models as needed. Author agile stories and support engineering teams throughout development. Support testing, reconciliation, and integration verification activities. Delivers work packages collaboratively, with clarity on scope, measures of success, and technical integrity A comprehensive Enterprise Data Domain Map, aligned with organisational functions and platforms Evaluation … architecture alignment across customer and operational systems Support the development of the data passport concept for existing and new datasets in line with enterprise governance requirements Design patterns and integration guidance for evolving our data product strategy Collaborate with Data Governance Leads and Data BAs to design semantic models and logical data layers to support trusted reporting and analytics. More ❯

ideal candidate will have a strong understanding of software testing methodologies, excellent analytical skills, and a passion for delivering high-quality products. Tech Stack: AWS Serverless Lambda with Node.js API Gateway (REST/JSON) DynamoDB S3 WAF Back-Office Banking Systems API Integration Dynamics 365 CRM React.js (website)/React Native (app) Responsibilities: Collaborate with cross-functional … or real devices. Experience creating, managing, and manipulating test data using to cover various test scenarios. Experience with maintaining regression test suites and conducting regression tests. Solid Experience with API testing using tools like Postman or similar. Experience with defect tracking tools, including logging and managing defects through the entire testing lifecycle. Experience working in Agile environments, participating in … in software testing. Experience with performance testing and load testing tools (e.g., JMeter, LoadRunner). Experience with database testing and SQL query language. Experience testing AWS services like Lambda, API Gateway, DynamoDB, and S3. Understanding of security testing concepts and tools (e.g., OWASP ZAP, Burp Suite). Knowledge of usability testing and user experience (UX) principles. Start-up experience 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 ❯

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 ❯

high-performance, front-to-back Trading Platform that supports multi-asset trading. The platform is designed to handle financial instruments with low-latency execution, robust risk controls, and seamless integration across trading, risk, operations, and finance workflows. The system is built with a modular architecture encompassing core components such as market data feeds, order gateways, execution algorithms, risk engines … REST APIs. Strong understanding of the order lifecycle, market data, and trading of instruments such as spot, futures, and options. Experience with backend development using Java is required - including API integration, business logic, and collaboration with platform teams. Familiarity with microfrontend architecture and UI composition techniques. Comfort with modern frontend tooling, code profiling, testing, and performance optimization. Able 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 ❯

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 ❯

requirements Technical Skills - Data Projects & Development Experience managing data projects from discovery to delivery, balancing business value and technical feasibility. Foundational development knowledge including Python (data manipulation, automation scripts, API integration). Able to work with REST APIs to consume external data, such as risk models or compliance checks, and integrate into SQL or Power BI. Familiarity with … systems (e.g., Git) and working within structured development environments. Use of Power Apps and Power Automate to build no-code/low-code solutions and workflows, including SharePoint list integration and form submissions Technical Skills - Other Knowledge of Master Data Management Knowledge of data migration Knowledge of Sharepoint lists Awareness of SQL Server Integration Services Awareness of SQL More ❯

and custom module development. Proficient in front-end technologies such as HTML, CSS (SASS/LESS), and modern JS frameworks (React, Vue.js, etc.). Understanding of RESTful services and API integrations. Version control using Git (GitHub/GitLab/Bitbucket). Experience working in Agile environments. Knowledge of web security best practices and performance optimization. More ❯

in modern web development technologies: TypeScript, ReactJS, NextJS, and NodeJS. Experience working with CSS, component libraries and design systems (ChakraUI, Tailwind or similar). Some knowledge of GraphQL for API development and integration. Proficiency with Docker and containerisation. A continuous learning mindset and adaptability in a fast-paced, evolving startup environment. Genuine excitement at the opportunity to work on More ❯