401 to 425 of 467 REST Jobs in the UK

Frontend UI Engineer (Angular)

Hiring Organisation
DCV Technologies
Location
Basildon, Essex, United Kingdom
Employment Type
Contract
components using TypeScript, Angular, HTML, and CSS. Implement data heavy user experiences, including tables, dashboards, and visualizations. Collaborate with backend teams to integrate REST APIs and microservice based systems. Apply best practices in state management, performance optimization, and UI scalability. Contribute to frontend architecture decisions, coding standards, and shared component … frontend architectures. Familiarity with data rich UI elements such as tables, grids (e.g., AG Grid or similar), and basic charting/visualisation. Experience consuming REST APIs and working alongside backend teams in microservices based environments. Proficiency with Git and modern build/package tools (npm, yarn). Comfortable working ...

Senior Technical Lead

Hiring Organisation
Nextech Group Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£90,000
onboarding into a repeatable process. What you'll do Phase 1 (0-3 months): Lead the greenfield implementation of all core platforms. Build foundational REST API integrations and webhook-driven automations. Define the cross-platform data model - canonical field mapping, entity relationships and data quality standards across … HaloPSA, HubSpot, Sage Intacct, NinjaOne RMM, 3CX, Microsoft 365/Graph API * Strong JavaScript and/or Python for integration scripting and automation * REST API design - webhooks, OAuth, JSON transformation, event-driven architecture * Cross-platform data mapping across multiple SaaS systems * Technical documentation to a professional standard * Comfortable operating autonomously ...

Senior Technical Lead

Hiring Organisation
Nextech
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£85,000 - £90,000 per annum
onboarding into a repeatable process. What you'll do Phase 1 (0-3 months): Lead the greenfield implementation of all core platforms. Build foundational REST API integrations and webhook-driven automations. Define the cross-platform data model - canonical field mapping, entity relationships and data quality standards across … HaloPSA, HubSpot, Sage Intacct, NinjaOne RMM, 3CX, Microsoft 365/Graph API* Strong JavaScript and/or Python for integration scripting and automation* REST API design - webhooks, OAuth, JSON transformation, event-driven architecture* Cross-platform data mapping across multiple SaaS systems* Technical documentation to a professional standard* Comfortable operating autonomously ...

Java Full Stack Developer

Hiring Organisation
Syntax Consultancy Ltd
Location
Manchester, United Kingdom
Employment Type
Permanent
Salary
£65000 - £70000/annum Bonus + Benefits
Working on a 'hybrid remote' basis from either Manchester. Working 5-7 days/month on-site with the option to work remotely for rest of the time. A chance to work with a leading global IT transformation business on a large-scale IT modernisation programmes for Government clients. Experience … Framework, Spring Boot Solid understanding of JavaScript: Angular and NodeJS strongly preferred Practical Micro services development experience Practical Relational Database development experience (e.g. PostgreSQL) REST APIs Strong understanding CI and DevOps technologies (Hands-on experience on Git, Jenkins, and Ansible preferred) Practical experience on AWS (ECS, EKS, API Gateway ...

Full Stack NextJS Developer

Hiring Organisation
INTEC SELECT LIMITED
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£90,000 - £110,000 per annum
systems and genuinely influence both the technical direction and engineering culture. Responsibilities: Building production-grade applications using Next.js, React & TypeScript Designing and developing APIs (REST/GraphQL) Working across the full stack – frontend, backend, and cloud Owning features end-to-end (design build deploy) Contributing to architecture and best practices … development experience Strong Next.js/React/TypeScript background Experience building scalable web applications Solid understanding of SSR, SSG & frontend performance API development experience (REST or GraphQL) Cloud exposure (AWS preferred) + Docker Strong fundamentals (HTTP, DNS, etc.) Experience Leading Software Engineering teams Bonus points for: Go or C# backend ...

Full Stack Engineer (TDD / C# / JavaScript)

Hiring Organisation
Adria Solutions
Location
Warrington, Cheshire, North West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£65,000
clean, maintainable full stack solutions using .NET and modern JavaScript frameworks Lead by example in test-driven development practices Integrate third-party systems using REST APIs, OAuth2, webhooks, and resilient patterns Contribute to a scalable, observable integration layer Collaborate with Product, QA, and DevOps to deliver high-quality releases … with a component-based SPA framework (e.g. Vue, React, or Angular) Proven, hands-on test-driven development experience Strong experience integrating third-party APIs (REST, OAuth2, webhooks, retries, rate limiting) Solid SQL skills (e.g. MariaDB or MySQL) Experience with Git workflows (branching, pull requests, code reviews) Regular user ...

Technical Lead

Hiring Organisation
Insight Global
Location
Chester, England, United Kingdom
technical leadership, solution design, and direction across multiple delivery squads. Key Responsibilities Lead design and development of Java‐based microservices , event‐driven systems, and REST APIs. Deliver solutions aligned to ISO 20022 , RTP schemes, message transformations (XML/JSON), and payment routing/validation. Implement integration patterns using Mule … hands‐on software engineering in financial services or high‐scale regulated environments. Team/technical leadership experience. Strong expertise in Java/J2EE , REST, microservices, and distributed systems. Payments experience: CHAPS, TARGET2, CBPR+, RTP , or similar. Oracle SQL/PL‐SQL and performance tuning for large transactional systems. Deep ...

Developer Golang

Hiring Organisation
CBTS
Location
City of London, London, United Kingdom
Client: Largest American Credit Card Company Location: Burgess Hill 3 days/week Years of Exp: 6-9 years Skills: Go, Java, Git, REST, Jenkins, NoSQL, Postgres/ql £40-£50/hr Inside IR35 Visa sponsorship is not available. We're looking for an enthusiastic, diligent Golang Software Engineer … type safe programming language (Golang Preferred but other experience can be considered) Comfortable/experienced with back-end micro-service architecture and communication, specifically REST and asynchronous messaging services (e.g., Kafka, RabbitMQ etc.) Comfortable/experience within a Scrum framework working with as part of a team to deliver business ...

Senior Engineer

Hiring Organisation
&Dine
Location
London, England, United Kingdom
product and operations to deliver practical solutions Improve system performance, reliability, and developer workflows Front-end JavaScript/TypeScript Vue/Nuxt or similar REST API integration Solid CSS/SCSS/SASS State management and component-based development Unit/end-to-end Testing and Git workflows Experience with … Analytics tools like Mixpanel Back-end Node.js services and REST APIs PostgreSQL/MySQL and database design ORMs such as Sequelize Business logic, including payments, workflows, and permissions Infrastructure CI/CD pipelines (GitHub Actions or similar) Cloud platforms such as AWS Monitoring, logging, and production reliability AWS Amplify ...

Software Developer

Hiring Organisation
Urban Empire Recruitment
Location
Manchester, Lancashire, England, United Kingdom
Employment Type
Full-Time
Salary
£35,000 - £40,000 per annum
workflows with finance systems such as Sage Intacct (highly desirable), Dynamics, NetSuite, or other ERP/financial platforms Design and implement API-based integrations (REST/SOAP) to exchange data between internal and external systems Manage authentication methods including OAuth, API keys, and service accounts Data & SQL Write and optimise … solution design, and testing phases Essential Skills & Experience Hands-on experience with codeless/low-code BPA platforms Strong understanding of API concepts, including REST endpoints, JSON/XML payloads, and authentication Proficiency in MS SQL for querying, data modelling, and performance tuning Experience integrating with Finance/ERP systems ...

Senior Dynamics Developer

Hiring Organisation
Nigel Frank International
Location
Cambridge, Cambridgeshire, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £70,000 per annum
query Dataverse data using FetchXML, OData, Web API, and QueryExpression with security-aware filtering. Integrate Dynamics/Dataverse with internal and external systems using REST/Graph APIs and Azure services (Functions, Logic Apps, Service Bus). Manage ALM processes including solution strategy, CI/CD pipelines, versioning, and environment … driven apps, including UI enhancements, client-side scripting, and Business Process Flows. Solid background integrating systems using Azure Functions, Logic Apps, Service Bus, and REST/Graph APIs. Strong ALM knowledge with Azure DevOps, including CI/CD pipelines, solution management, versioning, and environment governance. Benefits Starting Salary ...

Senior SharePoint Developer and Administrator

Hiring Organisation
Ryder Reid Legal Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
Online, including rewriting legacy web parts using SPFx. Build custom SPFx web parts, extensions and integrations using TypeScript, JavaScript, React, HTML/CSS, and REST APIs. Develop and maintain SharePoint Online intranet structures including architecture, navigation, branding, and content design. Integrate SharePoint with internal systems and third-party platforms using … development and administration. Strong background migrating SharePoint 2016 to SE/Online. Proven SPFx development skills. Proficiency in TypeScript, JavaScript, React, HTML5, CSS3. Strong REST API and Microsoft Graph integration experience. Solid C#/.NET framework experience. Deep knowledge of SharePoint on-prem administration, performance tuning, patching and troubleshooting. Experience ...

Front End Engineer - AI

Hiring Organisation
Orion Innovation
Location
United Kingdom
agent tools, and custom modules that support reasoning, summarization, and multi-step task execution Integrate agents with enterprise systems (e.g., Workday, SAP, Salesforce) via REST APIs, SDKs, or message queues Build and manage agent lifecycle components , including initialization, memory/state handling, and fallback logic Implement and consume vector store … experience in developing and deploying production-grade AI/ML or automation solutions Strong proficiency in Python , with hands-on experience using FastAPI , REST APIs, and background task orchestration Deep familiarity with agentic frameworks such as LangChain , LangGraph , CrewAI , ReAct , or similar Understanding of LLM orchestration , including prompt design, tool ...

Senior/Lead Software Developer

Hiring Organisation
Oscar Associates (UK) Limited
Location
Glasgow, Lanarkshire, Scotland, United Kingdom
Employment Type
Permanent
Salary
£70,000
impact role: 50% coding | 20% overseeing team members | 30% business engagement & architectural thinking Tech environment: JavaScript/TypeScript | React/Vue | Node/Python | REST APIs | Containers | Cloud You'll be: * Designing, building and scaling modern web platforms and Salesforce solutions * Building end-to-end features across web apps … Salesforce, including LWC * Designing REST API integrations between internal systems * Owning and overseeing the full software development lifecycle * Contributing to architecture, CI/CD and engineering standards * Working closely with C-suite stakeholders to turn real business processes into software * Supporting and mentoring other developers What they're looking ...

Senior Back End Engineer (Node.js/Typescript)

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
Nottingham, Nottinghamshire, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £90,000 per annum
with product, frontend and platform teams. Key responsibilities include: Designing, developing and maintaining scalable microservices using TypeScript and Node.js Building and supporting GraphQL and REST APIs for internal and external integrations Translating business requirements into robust technical solutions, architecture and documentation Championing code quality, automation, CI/CD and DevOps … best practices across the team YOUR SKILLS AND EXPERIENCE: You will bring strong capability in: TypeScript and Node.js development Microservices-based architectures GraphQL and REST API design Working with SQL and NoSQL databases Modern software development practices, including CI/CD, testing and automation THE BENEFITS: You will receive ...

Java Backend Developer (Banking)

Hiring Organisation
Ascendion
Location
United Kingdom
secure financial applications. Key Responsibilities: Design and develop backend services using Java and Spring Boot Build and enhance microservices-based applications Develop and integrate REST APIs for enterprise systems Work on event-driven architecture using messaging tools (e.g., Kafka) Collaborate with cross-functional teams in an Agile environment Support … applications Required Skills: Strong experience in Java (8/11/17) and Spring Boot Hands-on experience with Microservices architecture Experience with REST APIs and backend development Exposure to event-driven systems/Kafka (or similar tools) Experience with databases (SQL/NoSQL) Familiarity with CI/CD tools ...

Java Backend Developer (Banking)

Hiring Organisation
Ascendion
Location
Chester, Cheshire, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
secure financial applications. Key Responsibilities: Design and develop backend services using Java and Spring Boot Build and enhance microservices-based applications Develop and integrate REST APIs for enterprise systems Work on event-driven architecture using messaging tools (e.g., Kafka) Collaborate with cross-functional teams in an Agile environment Support … applications Required Skills: Strong experience in Java (8/11/17) and Spring Boot Hands-on experience with Microservices architecture Experience with REST APIs and backend development Exposure to event-driven systems/Kafka (or similar tools) Experience with databases (SQL/NoSQL) Familiarity with CI/CD tools ...

Java Backend Developer (Banking)

Hiring Organisation
Ascendion
Location
Chester, Cheshire West and Chester, Cheshire, United Kingdom
Employment Type
Permanent, Contract
secure financial applications. Key Responsibilities: Design and develop backend services using Java and Spring Boot Build and enhance microservices-based applications Develop and integrate REST APIs for enterprise systems Work on event-driven architecture using messaging tools (e.g., Kafka) Collaborate with cross-functional teams in an Agile environment Support … applications Required Skills: Strong experience in Java (8/11/17) and Spring Boot Hands-on experience with Microservices architecture Experience with REST APIs and backend development Exposure to event-driven systems/Kafka (or similar tools) Experience with databases (SQL/NoSQL) Familiarity with CI/CD tools ...

Junior Frontend Developer

Hiring Organisation
BGC Group
Location
United Kingdom
Redux. Write clean, maintainable code in TypeScript and JavaScript (ES6). Collaborate with team members to implement real-time data solutions using WebSockets and REST APIs. Build responsive interfaces with CSS and component libraries. Participate in code reviews and testing using frameworks like Jest or Mocha. Learn and contribute … manage tasks effectively. Skills/Experience Essential: Strong proficiency in TypeScript and JavaScript (ES6). Knowledge of React and Redux. Basic understanding of REST APIs and WebSockets. Familiarity with CSS and responsive design principles. Exposure to testing frameworks (Jest, Mocha). Willingness to learn SDLC and CI/CD practices. ...

Apex Developer

Hiring Organisation
Tata Consultancy Services
Location
England, United Kingdom
performant. Should be able to write unit test cases using any of the frameworks and should be completely automated. Should have strong exposure in REST API design principles. Should be able to develop reusable components using proper design patterns and implement the right solutions. Should be able to do code … Profile Essential skills/knowledge/experience: Oracle Databases PL/SQL Programming Oracle APEX (theoretical knowledge atleast) Python, Shell and Perl SOAP and REST Web Services. Desirable skills/knowledge/experience: Exposure to Microservices and cloud deployment Demonstrable experience implementing ETL Experience in Reverse engineering Experience of Oracle ...

Outsystems Developer

Hiring Organisation
Coltech
Location
City of London, London, United Kingdom
build responsive web and mobile applications using OutSystems (Service Studio) Develop workflow orchestration, process automation, and data models Implement integrations with enterprise systems using REST/SOAP APIs and external services Develop reusable components, UI patterns, and application logic Support testing, deployment, and environment promotion activities Troubleshoot performance issues … years’ experience in OutSystems development (Reactive or Traditional Web/Mobile) Strong understanding of low-code application architecture and delivery lifecycle Experience with integrations (REST, SOAP, APIs, OAuth, SQL) Good understanding of relational databases (SQL Server or Oracle) Knowledge of JavaScript and CSS for UI customisation Understanding of application security ...

OutSystems Developer (LowCode Orchestration)

Hiring Organisation
Infoplus Technologies UK Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
From £400 to £450 per day
experience in OutSystems development (Traditional or Reactive Web/Mobile). Strong understanding of low-code application architecture and lifecycle. Experience with integrations (REST, SOAP, OAuth, SQL, message queues). Basic understanding of CSS, JavaScript, and relational databases (SQL Server, Oracle). Knowledge of application security, performance tuning, and scalable … integrations, and reusable UI patterns and modules. Implement role-based access, security configurations, and performance optimisations. 2. Integration & API Management Integrate with backend systems (REST/SOAP APIs, databases, SAP, CRM). Build and maintain integrations ensuring reliability and security. Design asynchronous flows, event-driven architectures, and external data connectors. ...

Senior Machine Learning Engineer

Hiring Organisation
SoftInWay, Inc
Location
City Of Bristol, England, United Kingdom
Workflows : Convert research code into robust, testable, and observable services. Implement CI/CD pipelines, automated testing, and reproducibility standards. Integration & Interoperability : Design REST/gRPC endpoints for cross-language communication. Ensure compatibility with C#/.NET services. Performance & Scalability : Optimize GPU/CPU utilization, batching strategies, and memory management. … understanding of packaging, type checking, and performance profiling. Architecture : Proven experience designing scalable ML systems for production. APIs : Proficiency in gRPC/Protobuf and REST for cross-language integration. MLOps : CI/CD pipelines, containerization (Docker/Kubernetes), model registries, reproducibility. Performance Optimization : GPU acceleration (CUDA/cuDNN), mixed precision ...

Senior Full Stack Engineer (AWS Microservices & Integrations)

Hiring Organisation
Narwhal Labs
Location
City Of Bristol, England, United Kingdom
office-based role and candidates must be located in or within commutable distance of Bristol. Responsibilities: Design and build microservices behind API Gateway (REST/HTTP), running on Lambda and containerised workloads on EC2/Fargate Model multi-tenant data across DynamoDB and RDS (PostgreSQL), using S3 for object storage … Vitest, Postman/Newman or Pact Strong backend development in Node.js/TypeScript (Go or Python also welcome) and solid API design skills across REST, with GraphQL a plus Strong data modelling skills including NoSQL vs relational trade-offs, partitioning, indexing and migration strategies Proven experience building and consuming webhook ...

Security Architect (DevSecOps)

Hiring Organisation
Pontoon Solutions
Location
London Area, United Kingdom
development lifecycle. • Be able to develop threat models, attack trees, and embed security by design in product engineering effort. • Good understanding of web technologies, REST APIs, micro services, modern application development, and mobile apps. Good understanding of software architecture, dev-sec-ops, and network security. • Experience in browser security … generative AI tools to support our candidate screening process. This helps us ensure a fair, consistent, and efficient experience for all applicants. Rest assured, all final decisions are made by our hiring team, and your application will be reviewed with care and attention. ...