1,176 to 1,200 of 1,434 REST Jobs in England

Java Engineer / AWS Serverless Engineer (SC Cleared)

Hiring Organisation
Hays Technology
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£428/day £428 Inside IR35
looking for a hands-on Java Engineer to develop and support cloud-native services within an AWS environment. You'll work on Java microservices, REST APIs and serverless components, contributing across the full software development lifecycle. Key Responsibilities Develop and maintain Java-based microservices and APIs. Build and support … serverless solutions using Lambda. Design and consume REST and SOAP services. Write automated tests and contribute to CI/CD pipelines. Collaborate with engineers, testers and DevOps teams to deliver high-quality software. Participate in code reviews, troubleshooting and production support. Essential Skills Java 21 Maven AWS Lambda/Serverless ...

Java Engineer / AWS Serverless Engineer (SC Cleared)

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£428.00 per day
looking for a hands-on Java Engineer to develop and support cloud-native services within an AWS environment. You'll work on Java microservices, REST APIs and serverless components, contributing across the full software development lifecycle. Key Responsibilities Develop and maintain Java-based microservices and APIs. Build and support … serverless solutions using Lambda. Design and consume REST and SOAP services. Write automated tests and contribute to CI/CD pipelines. Collaborate with engineers, testers and DevOps teams to deliver high-quality software. Participate in code reviews, troubleshooting and production support. Essential Skills Java 21 Maven AWS Lambda/Serverless ...

Software Enginner

Location
West of England, England, United Kingdom
components and contribute to frontend architecture and design patterns. Work with APIs and integrate frontend applications with backend services. Build and consume GraphQL and REST APIs. Contribute to platform capabilities for updating, managing and maintaining customer data. Work across the full stack where required, gaining exposure to backend services … software development. Required Skills & Experience Frontend Engineering: React, TypeScript, Modern JavaScript, HTML/CSS, Building customer-facing web applications, Component-based development, Working with REST and/or GraphQL APIs, Understanding of frontend state and data management. Frontend Technologies: TanStack Query, Zustand or similar state management solutions, Vite, Tailwind ...

AI Platform Engineer - Insurance

Location
Greater London, England, United Kingdom
principles. Experience with data platforms and pipelines (Spark, Airflow, Kafka, dbt or similar) and working with large-scale datasets. Knowledge of model serving patterns (REST/gRPC, batch scoring, streaming inference) and API gateway integration. Understanding of regulated data handling (PII), encryption in transit/at rest, and role-based ...

Senior webMethods Integration Developer

Hiring Organisation
CBSbutler Holdings Limited trading as CBSbutler
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£625 - £645/day inside ir35
reliably. You'll be involved across the full integration lifecycle: design, development, integration, testing, troubleshooting and continuous improvement. What you'll be doing Develop REST and SOAP services using webMethods Designer Develop Universal Messaging/JMS packages Configure and maintain webMethods API Gateway Design and advise on integration patterns … security posture Essential technical experience webMethods webMethods Flow Services 10.15+ webMethods Integration Server 10.15+ webMethods Designer Universal Messaging/JMS webMethods API Gateway 10.15+ REST/SOAP Swagger/OpenAPI AWS S3 connectors/file transfer Data & search SQL - Oracle, MSSQL or MySQL Elastic/OpenSearch Cloud & infrastructure Azure Kubernetes ...

Senior Software Engineer

Hiring Organisation
The Portfolio Group
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£90000/annum
tooling to AI agents. Develop agent-to-agent connectivity, including message contracts, state management, retries and failure handling. Design clear, scalable APIs using REST and/or GraphQL, including authentication, authorisation, versioning and streaming interfaces such as SSE or WebSockets. Build production frontend applications using React, TypeScript and JavaScript. Work … commercial experience with Python for backend and integration development. Strong TypeScript/JavaScript and React experience building production applications. Strong API design experience, including REST and/or GraphQL, authentication, authorisation, versioning and streaming. Hands-on experience with MCP (Model Context Protocol) or comparable tool/plugin integration technologies, alongside ...

Senior Software Engineer

Hiring Organisation
The Portfolio Group
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£90,000 per annum
tooling to AI agents. Develop agent-to-agent connectivity, including message contracts, state management, retries and failure handling. Design clear, scalable APIs using REST and/or GraphQL, including authentication, authorisation, versioning and streaming interfaces such as SSE or WebSockets. Build production frontend applications using React, TypeScript and JavaScript. Work … commercial experience with Python for backend and integration development. Strong TypeScript/JavaScript and React experience building production applications. Strong API design experience, including REST and/or GraphQL, authentication, authorisation, versioning and streaming. Hands-on experience with MCP (Model Context Protocol) or comparable tool/plugin integration technologies, alongside ...

Full Stack Software Engineer

Location
Greater London, England, United Kingdom
reviewed, tested, and deployed code. Strong software architecture and design fundamentals: decomposing systems into services with clear boundaries, applying design patterns deliberately, designing REST API contracts, and reasoning about failure modes, data flow, and how a design will age. Proven experience designing and building automated tests at every level (unit … JavaScript, building user interfaces in React and working with the Node.js tooling around them. Back-end service development in Java, implementing and consuming REST APIs. Preferred Qualifications Fluency in reading, reviewing, and critically evaluating code you did not write, including code a model generated. Experience building on large-scale distributed ...

D365 CRM Developer

Location
City of Westminster, England, United Kingdom
Model-Driven and Canvas Apps), Power Automate workflows, and Power Pages solutions. Design and implement integrations using Azure Functions, Logic Apps, Service Bus, and REST APIs. Participate in Agile ceremonies including sprint planning, backlog refinement, demos, and retrospectives. Support CI/CD deployments using Azure DevOps and Git repositories. Perform … Skills Microsoft Dynamics 365 CE/CRM C#, .NET Framework/.NET Core JavaScript/TypeScript Dataverse Power Apps (Model-Driven & Canvas) Power Automate REST APIs/Web API Azure Functions, Logic Apps, Service Bus Azure DevOps, Git SQL Server, FetchXML Experience Hands-on experience on Dynamics 365 CE development ...

Software Engineer

Location
Lancashire, England, United Kingdom
maintainable applications using modern engineering practices. Responsibilities Develop and maintain modern web applications using C#/.NET and TypeScript . Build and enhance REST APIs, backend services and third-party integrations. Contribute to cloud-based applications hosted within Microsoft Azure . Work alongside engineers, designers and product teams to deliver … Support scalable, secure and performant application architecture. Contribute to technical discussions and continuous improvement initiatives. Tech Stack Essential C# .NET/.NET Core TypeScript REST APIs Microsoft Azure Backend Development API Development Desirable React Node.js Azure Functions CI/CD Infrastructure as Code Docker Microservices Headless CMS Cloud-Native Development ...

Software Engineer

Hiring Organisation
Oscar Associates (UK) Limited
Location
Manchester, North West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£45,000
maintainable applications using modern engineering practices. Responsibilities Develop and maintain modern web applications using C#/.NET and TypeScript . Build and enhance REST APIs, backend services and third-party integrations. Contribute to cloud-based applications hosted within Microsoft Azure . Work alongside engineers, designers and product teams to deliver … Support scalable, secure and performant application architecture. Contribute to technical discussions and continuous improvement initiatives. Tech Stack Essential C# .NET/.NET Core TypeScript REST APIs Microsoft Azure Backend Development API Development Desirable React Node.js Azure Functions CI/CD Infrastructure as Code Docker Microservices Headless CMS Cloud-Native Development ...

Lead Solutions Architect & Development Lead

Hiring Organisation
Flexible Solutionz
Location
Liverpool, Merseyside, North West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£90,000
wide software architecture and technical solutions. Develop and maintain business-critical applications using C#/.NET, Python, SQL and React . Design and build REST APIs and integrations with third-party systems, including our Case Management System. Oversee Microsoft SQL Server environments, T-SQL development and Power BI reporting. Lead … have experience leading software engineering teams and designing enterprise-scale solutions, alongside strong technical expertise in: C#/.NET and/or Python REST API development Microsoft SQL Server & T-SQL Power BI React or modern JavaScript frameworks Agile delivery and Azure DevOps Experience with Proclaim , Cloudflare or low-code ...

Front End Developer

Hiring Organisation
Flexible Solutionz
Location
Liverpool, Merseyside, North West, United Kingdom
Employment Type
Permanent
Salary
£55,000
That's where you come in. What You'll Be Doing Building responsive, maintainable front-end applications with React and modern JavaScript Working with REST APIs, collaborating closely with the back-end team on integration Pairing with and mentoring a junior developer code reviews, guidance, and simply showing them … with React (or another modern JS framework, with a willingness to work in React) Strong JavaScript/TypeScript and HTML5/CSS3 Comfortable integrating REST APIs Git and Agile delivery experience Nice-to-haves: Some C#/.NET awareness, so you can talk the same language as the back ...

Senior Software Engineer

Hiring Organisation
ECM Selection Ltd
Location
Cambridge, Cambridgeshire, East Anglia, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£75,000
record of delivering high-quality software across cloud and service-based architectures. Requirements: Demonstrable experience developing microservices or service-oriented architectures including REST API design and ideally a modern JavaScript front-end framework Strong skills with the Microsoft tech stack (C#, .NET, Azure, etc) Good understanding of web application authentication … bank holidays), Bupa medical insurance and a bonus scheme. Keywords: C#, .NET, Azure, Microservices, Cloud, OAuth, Infrastructure as Code, IaC, Kubernetes, CI/CD, REST API, Angular, TypeScript, JavaScript, Codex, Claude Code Another top job from ECM, the high-tech recruitment experts. Even if this job's not quite right ...

Senior Software Developer

Location
Greater London, England, United Kingdom
optimisation, and query tuning Experience delivering front-end functionality using HTML, JavaScript, and Razor Experience building and supporting integrations with third-party systems using REST APIs or similar technologies Practical experience working with Azure Cloud Services and Azure DevOps, or equivalent CI/CD tooling Proficiency with Visual Studio … contributing to CI/CD pipelines within a collaborative engineering culture. Highest-signal resume keywords C# .NET/.NET Core SQL/T-SQL REST APIs Azure Cloud Services ATS Optimization Keywords Hard Skills C# .NET/.NET Core SQL/T-SQL HTML JavaScript Razor Database Design Performance Optimisation ...

Full Stack Software Engineer - AI/ML - Security Cleared

Hiring Organisation
Searchability NS&D
Location
Hounslow, Middlesex, United Kingdom
Employment Type
Full-Time
Salary
£45,000 - £90,000 per annum
computer vision capabilities accessible to end users. The role could involve: * Developing modern full stack applications and user interfaces * Building backend services and REST APIs * Integrating AI/ML capabilities into software applications * Developing tools for image, video and AI visualisation * Building scalable and maintainable software * Integrating applications, services … Experience with some of the following would be valuable: SOFTWARE ENGINEERING * Full Stack Software Development * Python development * JavaScript/TypeScript or similar frontend technologies * REST APIs and frameworks such as Flask or Django * Git, automated testing and CI/CD * Strong software design and engineering practices * Linux development environments DATA ...

M365 Developer - Sharepoint, Power Platform

Location
Greater London, England, United Kingdom
turn them into user-friendly solutions that help the GSMA thrive. Your responsibilities: Develop full-stack solutions using current web technologies (e.g. SPFX, React.js, REST APIs) to create robust applications within SharePoint and M365. Develop and maintain automation scripts using PowerShell, Microsoft Graph, Power Automate and other tools to streamline … Apps. You will be proficient in TypeScript, React, JavaScript and modern front-end tooling for SPFx development. You will have an expert understanding of REST APIs and Microsoft Graph API and the ability to extract data from all areas of the M365 ecosystem (e.g. Exchange, MS Teams), to integrate with ...

Agentforce Operations FDE

Location
Greater London, England, United Kingdom
Generation) , vector databases, search indexes, and knowledge bases to supply agents with accurate enterprise context. Enterprise Integration & API Management: Develop and maintain custom APIs (REST, GraphQL, webhooks) and integration pipelines connecting AFO/Agentforce to Salesforce Data Cloud (Data 360), cloud warehouses (Snowflake, Databricks), and core ERPs (SAP, Oracle, NetSuite … building RAG pipelines, vector search indexes, and knowledge base retrievers for enterprise data. Multi-Agent Systems & API Mastery: Practical experience with API design (REST/SOAP/webhooks) and modern agent protocols (e.g., MCP, tool calling, or event-driven messaging architectures). Expertise in process orchestration and API-led connectivity ...

M365 Developer – Sharepoint, Power Platform

Location
Greater London, England, United Kingdom
turn them into user-friendly solutions that help the GSMA thrive. Your responsibilities Develop full-stack solutions using current web technologies (e.g. SPFX, React.js, REST APIs) to create robust applications within SharePoint and M365. Develop and maintain automation scripts using PowerShell, Microsoft Graph, Power Automate and other tools to streamline … Apps. You will be proficient in TypeScript, React, JavaScript and modern front‐end tooling for SPFx development. You will have an expert understanding of REST APIs and Microsoft Graph API and the ability to extract data from all areas of the M365 ecosystem (e.g. Exchange, MS Teams), to integrate with ...

Data Engineer II (Data Platform)

Location
Oxford, England, United Kingdom
documentation, and governance. Platform & Software Engineering Write production Java and Python code across our evolving platform stack — from data ingestion and event processing to REST services and internal tooling. Build and maintain streaming and batch processing systems (Flink, Spark, Kafka) that power real‐time and analytical workloads. Take responsibility … Hive, BigQuery, Snowflake) and working with terabyte-scale or larger datasets. Solid foundation in data structures, algorithms, and object‐oriented design. Professional experience building REST services and working with event queue systems. Familiarity with Linux and cloud infrastructure design on AWS or equivalent cloud providers. Systems performance and tuning experience ...

Senior Systems Specialist (ERP) - Middlesbrough

Location
Tees Valley, England, United Kingdom
extensions, SQL/database services, identity, integrations, reporting and end-user clients. Integration, Data & Interoperability Design and govern integrations using appropriate Dynamics patterns including REST/OData APIs, data entities, web services, business events, file/EDI interfaces and other legacy interfaces where required. Use Azure integration services such … migrations, platform changes and controlled releases where compatibility across Microsoft, ISV and custom layers must be actively managed. Experience with Dynamics integration patterns including REST/OData, APIs, data entities, webhooks/business events, OAuth and Azure integration services such as API Management, Logic Apps, Functions and messaging. Strong environment ...

Infrastructure Engineering Specialist

Location
West of England, England, United Kingdom
deploying enterprise monitoring and observability suites. Practical experience integrating with major network and firewall management consoles. Deep knowledge of SNMP, Syslog, NetFlow, WMI, and REST APIs. Solid understanding of ITIL frameworks and Role-Based Access Control (RBAC). #J-18808-Ljbffr ...

Mobile Architect - Outside IR35

Hiring Organisation
Hydrogen Group
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£800.00 - £900.00 per day
module builds: enough to read, question and validate, not necessarily to write Backend, API and integration Mobile-to-backend integration patterns: BFF, API gateway, REST/GraphQL/gRPC, versioning and contract management Identity and authorisation: OAuth 2.0, OIDC, token lifecycle, session management, step-up authentication; FAPI and Open Banking ...

Mobile Architect - Outside IR35

Location
City Of London, England, United Kingdom
module builds: enough to read, question and validate, not necessarily to write Backend, API and integration Mobile-to-backend integration patterns: BFF, API gateway, REST/GraphQL/gRPC, versioning and contract management Identity and authorisation: OAuth 2.0, OIDC, token lifecycle, session management, step-up authentication; FAPI and Open Banking ...

IAM Engineer: Secure Access & Identity Orchestration

Location
Greater London, England, United Kingdom
lifecycle management, application onboarding, access governance, provisioning and directory integrations to ensure secure access to business systems. Strong experience with RBAC, SAML, OAuth2 and REST APIs is highly valued, along with collaboration across security, infrastructure and application teams to #J-18808-Ljbffr ...