1 to 25 of 29 Permanent API Integration Jobs in the City of London

short-term delivery needs with long-term maintainability and scalability. Ensure applications are performant, accessible, secure, and compliant with relevant standards and regulations. Platform & Integration Lead the integration of front-end platforms with backend services using GraphQL APIs, and third-party systems to deliver seamless … accessibility standards. Experience designing and maintaining CI/CD pipelines , using version control effectively, and working within modern development workflows. Solid understanding of secure API integration , authentication and authorisation flows , and modern UI architecture (GraphQL experience preferred). Comfortable leading design implementation and collaborating closely with Product ...

short-term delivery needs with long-term maintainability and scalability. Ensure applications are performant, accessible, secure, and compliant with relevant standards and regulations. Platform & Integration Lead the integration of mobile platforms with backend services using GraphQL APIs, and third-party systems to deliver seamless end-to-end user … Native is essential , with a strong grasp of front-end design patterns and best practices in mobile SDLC. Proven experience of REST/GraphQL API integration with mobile applications Solid understanding of mobile application fundamentals: iOS/Android app lifecycle, performance constraints and release management Proven hands ...

high-volume, real-time and cross-border payment systems. The ideal candidate will have strong experience in automating end-to-end payment workflows, API integrations and message transformations across domestic and international payment schemes such as SWIFT, SEPA, ACH, RTP, FedNow and ISO 20022 (MX/MT). This … . Build reusable libraries for testing APIs, microservices and message-based integrations. Contribute to automation strategy for modernization programs and platform migrations. 2. API & Integration Automation Automate testing of payment APIs using tools such as RestAssured, Postman, Karate, or equivalent. Validate message formats including MT/ ...

Dataverse skills: modelling, relationships, business rules, role-based security Expertise in Power Pages (configuration, security roles, Liquid, templates) Experience with PCF, custom connectors, and API integration Advanced DAX for Power BI reporting Strong testing, debugging, troubleshooting and performance optimisation capability Experience with ALM, DevOps practices, CI/ ...

modern cloud environment. Strong expertise in Azure data services (ADLS, Azure Data Factory, Microsoft Fabric). Proficient in SQL and data modelling. Experience with API integration and SFTP data feeds. Excellent communication skills for engaging non-technical stakeholders. Desirable Background in financial services or fintech. Familiarity with Power ...

products Tools that reduce headcount pressure through automation Tech Stack (Flexible – but ideally) JavaScript/TypeScript React/Next.js Node.js Python (bonus) API integrations SQL/NoSQL databases Cloud (AWS/GCP/Azure) Automation tools (Zapier, Make, etc.) Git & modern CI/CD We care more about capability ...

stable, scalable, and architected for long-term growth. Define and maintain scalable event taxonomies, naming conventions, and governance standards. Build and maintain documentation, integration specs, and playbooks that scale globally. Ensure strong deliverability practices across email and push (SPF, DKIM,DMARC, IP warming, token management, throttling). Identify … mitigate systemic CRM platform risks before they impact commercial performance. Provide second-line escalation support for complex CRM technical issues. Data & Integration Architecture Partner with Data Engineering to define and optimise the CRM data model. Validate and debug data flows end-to-end (app → warehouse → Braze →campaign output). ...

SPFx) development Knowledge of Microsoft 365 development tools and APIs Experience with Power Platform technologies (Power Apps and Power Automate) Strong understanding of REST API integration Experience working with JavaScript or TypeScript and modern web development practices Understanding of secure development and enterprise collaboration environments Desirable Experience Experience ...

experience (modelling, testing, macros, documentation) Workflow orchestration (Dagster preferred) Cloud data warehouses (Snowflake, BigQuery, Redshift, etc.) Data modelling for analytics and AI use cases API integrations and ingestion design patterns AI/ML Infrastructure Feature engineering architecture ML pipeline and deployment workflows Experience supporting production ML systems Familiarity with ...

large datasets from internal and external sources. Architect and optimise ETL/ELT workflows using AWS, SQL, Python, and modern cloud-based technologies. Manage API integrations and automate data ingestion, transformation, and enrichment processes. Improve data platform performance, reliability, and scalability across the organisation. Develop analytical tools and dashboards ...

will architect the data foundation that powers the entire business. What You Will Do Data Pipelines Build and maintain Python based ETLs and API integrations into Redshift Manage orchestration using GitHub Actions Ensure uptime, reliability, monitoring and data quality across all systems Analytics Layer Build and maintain dbt models ...

JavaScript, Bootstrap, HTMX Heroku, GitHub Actions You’ll Need 3–5 years professional software development experience Strong Python and Django experience Hands-on LLM API integration experience Solid relational database knowledge Cloud deployment experience (Heroku or AWS ideal) Based in London, hybrid (3 days in South West London ...

frontend and backend development challenges. Experience with CI/CD workflows and Azure DevOps. Would be Beneficial: Experience with Azure AI Services and OpenAI API integration. Knowledge of low-code/no-code platforms like Webflow for rapid prototyping. Previous experience in a client-facing role, presenting technical roadmaps. ...

Platform/Power Automate Proficiency building Power BI dashboards and reports for business stakeholders Bonus - Working knowledge of Python for scripting, data handling, or API integration Bonus - Experience with Snowflake as a cloud data platform Professional A commercial mindset: you think about business value first, technology second Strong ...

Hybrid 3 and 2. The successful applicant will lead the management and continuous improvement of the Law firms business applications portfolio, ensuring system performance, integration, and alignment with the firms strategic and security objectives. The role will actively engage with Partners, fee earners and business support teams to identify … identify improvement opportunities Risk & Compliance Ensure compliance with security, data protection, and industry standards. Skills Required Proficient in related development frameworks. Understanding of API integration, data modelling, and application performance tuning. Strong project management skills are essential for implementing new systems or major upgrades. Experience managing software lifecycle ...

Your Responsibilities Develop and maintain frontend applications across web and mobile Implement new features and optimize existing functionality Collaborate with backend engineers for seamless API integration Participate in the full software development lifecycle Write clean, maintainable, and high-quality code following best practices What We Need From ...

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 ...

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 ...

pure DevOps role. You will spend significant time on platform engineering, CI/CD, and infrastructure – but you will also contribute to application development, API design, and integration work. We need a generalist who leans platform, not an infrastructure specialist who only touches pipelines. What … fast diagnosis and recovery. • Define and track availability and reliability targets; drive post-incident review and preventative improvements. Application Development • Contribute to backend development: API endpoints, service logic, database schema, and integration code. This is a building role, not only an operations role. • Design and implement integration ...

team on a short-term contract. This role involves both front-end and back-end development, requiring strong skills in Java, Python, and API development. You will be instrumental in building and maintaining scalable, high-quality applications that deliver exceptional user experiences. Day-to-day of the role: Develop … mobile responsive design. Required Skills & Qualifications: Proven experience as a Full Stack Developer. Strong proficiency in Java and Python. Hands-on experience with API development and integration. Solid understanding of HTML, CSS, JavaScript, and modern front-end frameworks (e.g., React, Angular, or Vue). Experience with databases ...

professional experience. Proven track record leading the development, deployment, and maintenance of complex iOS applications at scale. Expertise in Swift, Objective-C, system design, API integration, and data modeling within the iOS ecosystem. Familiarity with AI-driven systems, tools, or workflows and applying AI/ML concepts ...

with an understanding of the differing regulatory and business landscapes. Implementation Depth: Expertise in managing long-cycle, complex technical implementations involving AI, Data and API integrations. ...

Systems architecture: identify repetitive work, build automations, eliminate friction Community Value Creation: creating value for our athletes, founders, and investors Technical builds: Supabase, N8N, API integrations, light code where needed Cross-functional work across fund ops, rightsholder programmes, and portfolio support Who this is for You've built something ...

Design end-to-end architecture for enterprise applications and cloud-based solutions Translate business requirements into scalable and secure technical solutions Lead system architecture, integration strategies, and technology selection Collaborate with development, DevOps, and infrastructure teams to ensure successful implementation Define architecture standards, best practices, and technical governance Evaluate … experience in Solution Architecture and Enterprise Architecture Hands-on experience with Cloud platforms (AWS/Azure/GCP) Experience with Microservices architecture and REST API integrations Strong knowledge of DevOps practices, CI/CD pipelines, Docker, and Kubernetes Experience designing scalable distributed systems Strong understanding of security, performance optimization ...

optimisation of high-performance, cloud-based software solutions Partner with Technical Design Authority to shape system architecture, APIs, and data models Ensure secure, scalable integration with databases, third-party APIs, and messaging services Drive performance optimisation, reliability, and robust data integrity standards Mentor developers, promote Agile best practice … years in a senior or leadership role Solid AWS experience (EC2, S3, RDS, Lambda) and cloud-native architecture Proficient in SQL (MSSQL & PostgreSQL) and API integrations Experience with CI/CD, Git, Jira, and modern DevOps practices Strong understanding of secure coding principles (OWASP) and performance optimisation Desirable: OAuth ...