476 to 500 of 776 REST Jobs in London

with LLM‐powered applications: RAG pipelines, tool‐calling architectures, or agentic systems. Experience designing external‐facing APIs, including versioning, backwards compatibility, and OpenAPI/REST standards. Familiarity with data infrastructure such as Airflow, Spark, Iceberg, or Kafka. Experience with energy markets. Modo Energy is an equal opportunity employer. Employment decisions ...

resolution.Experience creating and executing test cases and test scripts.Hands-on experience working within SAP applications.ABAP programming capabilities.Knowledge of APIs, web services — SOAP and REST — and XML.Willingness to travel up to 10%.Highly Desirable Skills:Tax and FinancialExperience configuring transaction taxes, e-invoicing, and related master data within SAP.Experience integrating third ...

both TypeScript and Python Experience personally building and maintaining multiple connectors to third-party APIs, SDKs, databases or services A solid understanding of HTTP, REST, GraphQL, webhooks, OAuth 2.0 and common authentication patterns A genuine appetite for reverse-engineering poorly documented integration surfaces by reading client code, inspecting network behavior ...

code and environment management Experience across managed hosting platforms such as Azure, Acquia, Umbraco Cloud, WP Engine or Pantheon API design and integration, REST and GraphQL, including third-party systems such as CRM, payment and marketing platforms Security by design and DevSecOps practice, with particular awareness of handling supporter ...

experience in technical consulting, solutions engineering, or integration-focused project management.Client facing experience requiredTechnical skills:Strong command of APIs, webhooks, and data structures (JSON, REST, GraphQL) — able to design and troubleshoot integrations confidently. Even better if you have experience with MCP Servers.Practical understanding of AI workflow configuration, including prompt engineering ...

databases, containers and observability, while also providing technical leadership and mentoring junior engineers. Key Responsibilities Design and develop scalable Java/Python microservices and REST APIs. Build and operate event-driven solutions using Apache Kafka . Design and optimise AWS Aurora PostgreSQL databases and data platforms. Deploy and support applications … using Docker and Kubernetes . Develop API integrations using REST, JSON and modern API design practices. Implement resilient systems with appropriate retry, timeout and error-handling mechanisms. Work with monitoring and observability tools including Grafana, Prometheus and Dynatrace . Provide hands-on production support, troubleshooting and root cause analysis. Support ...

maintain automated UI tests Test complex user journeys, state management, routing, validation, authentication, and accessibility Advise on testability improvements in frontend code Test REST APIs, service boundaries, integrations, retries, failure modes, and resilience patterns Contribute to test strategy for micro-services and distributed systems Validate API contracts, error handling, edge … Experience testing UI behaviour, forms, validation, routing, authentication flows, and browser compatibility Basic understanding of HTML, CSS, JavaScript, and browser developer tools Experience testing REST APIs and strong knowledge of API authentication, authorisation, routing, middleware behaviour, configuration, validation, and error handling Good understanding of C# and .NET application architecture Experience ...

DevOps, and Product teams in an Agile (Scrum/Kanban) environment. Integrate LLM-based capabilities (e.g., OpenAI, Gemini, Claude) into Java services via REST/SDK — for use cases such as document extraction, policy summarisation, or intelligent routing. Build or consume vector-search capabilities (e.g., OpenSearch, Pinecone) for retrieval-augmented … Essential Qualifications and Skills 4–7 years of hands-on Java development experience; strong Java 11+ command is non-negotiable. Solid Spring Boot experience: REST APIs, Spring Security, Spring Data, Spring Cache. Good understanding of microservices architecture, resilience patterns (Circuit Breaker, Retry, Bulkhead). Experience with Camunda BPM or similar ...

end. Proficiency in Microsoft SQL Server, including writing, interpreting, and troubleshooting complex queries, joins, and data transformations across relational structures. Solid understanding of REST/SOAP APIs, XML, and JSON, as well as system integration patterns and data mapping techniques. Familiarity with Boomi or a comparable integration platform, along with ...

office and home working hybridPermanent role salary 60,000- 75,000Requirements: experienced business analyst, understanding of databases and data structures/SQL queries/REST APIs The ideal candidate will combine BA techniques and technical ability to understand data and data transformation, with soft skills and the ability to quickly ...

home working hybrid Permanent role salary £60,000- 75,000 Requirements: experienced business analyst, understanding of databases and data structures/SQL queries/REST APIs The ideal candidate will combine BA techniques and technical ability to understand data and data transformation, with soft skills and the ability to quickly ...

Python development and OOP experience.Ability to write clean, maintainable and well-structured Python code using OOP principles.Familiarity with Docker/containers.Basic understanding of APIs (REST)Responsibilities and DutiesDevelop internal tools and systems to support traders, including automation scripts and web-based control consoles.Build and maintain end-to-end sports data ...

experience. Ability to write clean, maintainable and well-structured Python code using OOP principles. Familiarity with Docker/containers. Basic understanding of APIs (REST)Responsibilities and DutiesDevelop internal tools and systems to support traders, including automation scripts and web-based control consoles. Build and maintain end-to-end sports data ...

data requirements required to support critical business processes and data solutions. Own integration and data sharing standards, including interface specifications such as JSON and REST APIs, ensuring that structures support interoperability, decoupling and future-proofing. Represent information in forms appropriate to the solution context, including UML-friendly models, JSON structures ...

experience leading multiple concurrent projects or workstreams in a consulting environment.Strong hands-on knowledge of Workday integration technologies (Studio, EIB, Core Connectors, PECI, RaaS, REST/SOAP).Experience translating business requirements into scalable integration solutions.Demonstrated ability to manage stakeholders, facilitate workshops, and drive delivery outcomes.Strong understanding of integration frameworks, patterns ...

leading multiple concurrent projects or workstreams in a consulting environment. Strong hands-on knowledge of Workday integration technologies (Studio, EIB, Core Connectors, PECI, RaaS, REST/SOAP).Experience translating business requirements into scalable integration solutions. Demonstrated ability to manage stakeholders, facilitate workshops, and drive delivery outcomes. Strong understanding of integration ...

implementing pipelines using DAGs (e.g. Kubeflow, DVC, Ray) Experience of big data technologies (e.g. Spark, Hadoop) Have constructed batch and streaming microservices exposed as REST/gRPC endpoints Familiarity with GraphQL We recognize that our people are our strength and the diverse talents they bring to our global workforce ...

implementing pipelines using DAGs (e.g. Kubeflow, DVC, Ray)Experience of big data technologies (e.g. Spark, Hadoop)Have constructed batch and streaming microservices exposed as REST/gRPC endpointsFamiliarity with GraphQL#CIBAppliedAIJ.P. Morgan is a global leader in financial services, providing strategic advice and products to the world’s most prominent corporations ...

GlobalData’s programmatic data delivery function, enabling clients to integrate pharmaceutical intelligence directly into their systems, workflows and AI environments. DDS delivers data via REST API, Snowflake, CRM integration, file transfer and MCP, serving clients from global pharma companies to emerging biotech and CDMOs.As AI-native data consumption grows ...

event-driven integrations, and DevOps pipelines. Hybrid role with client sites and offices; you will work with AWS Lambda, S3, DynamoDB, NATS JetStream, and REST APIs to deliver secure, scalable solutions. Capgemini offers training, wellbeing programs, and an inclusive culture. #J-18808-Ljbffr ...

greenfield electronic trading project. You will shape architecture and design for a high-throughput, low-latency engine hosted on AWS, delivering scalable microservices and REST APIs. You will lead technical design, drive real-time processing with multithreading and asynchronous programming, and ensure robust test coverage with NUnit/ ...

Back End teams and stakeholders to deliver accessible interfaces in a mission-critical environment. Role requires strong React/TypeScript expertise, experience with REST APIs, and a secure delivery mindset. Current DV clearance and four days onsite at an MOD location are mandatory. #J-18808-Ljbffr ...

Developer to lead the design, development, and deployment of mission-critical applications using Java/JEE, Spring Boot, and microservices. You will build secure REST/gRPC APIs, manage asynchronous inter-service communication, drive CI/CD pipelines with Jenkins, and mentor junior engineers while promoting best practices in coding ...

strong team to deliver secure, high-performing services that enable global financial inclusion. The role focuses on greenfield development and improving existing systems, building REST APIs and microservices, and evolving systems like card payments, treasury, and crypto liquidity using Java 25, #J-18808-Ljbffr ...

month Outside IR35 contract . Key Skills & Experience: Strong commercial experience with Scala Experience building high-quality, scalable backend services Exposure to microservices, REST APIs, functional programming Strong understanding of CI/CD and modern engineering practices Cloud experience (AWS ideally) Able to support occasional out-of-hours work when ...