126 to 150 of 170 REST Jobs in London

Dirtea Shopify Engineer

Hiring Organisation
Launch Lab
Location
Hammersmith, England, United Kingdom
hands-on Shopify Developer in a DTC/eCommerce environment Strong expertise in Shopify Liquid and Online Store 2.0 Experience with Shopify APIs (REST/GraphQL) and third-party integrations Solid front-end skills (HTML, CSS, JavaScript) Track record of improving performance, UX, and conversion Experience with subscription platforms (Recharge ...

Salesforce Developer

Hiring Organisation
KOKO
Location
North West London, London, United Kingdom
Employment Type
Temporary, Work From Home
Salary
£65,000
other channels Desirable experience: Salesforce Marketing Cloud Developer or Email Specialist certification Salesforce Administrator certification or equivalent hands-on experience Experience with REST or SOAP API integrations and SFTP-based data pipelines Experience within live music, hospitality, membership or events environments ...

Workato Solution Architect

Hiring Organisation
Virtuoso Partner Ltd
Location
London, UK
running live demos, handling objections and supporting commercial teams through to close. · Deep understanding of iPaaS-led architecture and modern API-driven integration ecosystems REST/SOAP APIs, webhooks, event triggers and SDK. · Strong grasp of enterprise architectural patterns Service Oriented Architecture, Event-Driven Architecture and enterprise architecture disciplines. · Ability ...

Senior Backend Engineer Python

Hiring Organisation
Partnerscale Limited
Location
South East London, London, United Kingdom
Employment Type
Permanent
Salary
£55,000
meaningyouwillbebuildingbrand-newproductsfromthegroundupwithrealinputintothearchitectureandapproach. TheyarenowlookingforaMiddleweightPythonEngineertojointheirgrowingengineeringteam.Youwilldesign,build,andmaintainAPIintegrations,datapipelines,andinternaltoolingthatconnectmarketingplatforms,analyticsservices,andclientsystems. So,whowouldsuitthisrole? Asharp,adaptablebackenddeveloperwithcommercialPython,Node.jsorsimilarexperiencewhowantstoworkonvaried,technicallyinterestingprojectsforwell-knownbrands.Youwillbeconfidentworkingacrossthefulllifecycleofanintegration:readingAPIdocs,scopingthework,writingcleantestedcode,anddeployingtoproduction. Keyrequirements: ProfessionalPythonorNode.jsdevelopmentexperience Strongexperienceconsumingandintegratingthird-partyAPIs(REST,OAuth2.0,webhooks) ProvenexperienceauthoringAPIsusingframeworkssuchasFastAPI,Flask,orDjangoRESTFramework Comfortablewithrelationaldatabases(PostgreSQLpreferred)andwritingefficientSQL ExperiencewithGitandcollaborativedevelopmentworkflows Self-motivatedandcomfortableworkingautonomouslyinaremote-firstenvironment Whattheyoffer: Remote-firstwithoccasionalLondontravelforteamcollaborationandclientvisits 25daysannualleaveplusbankholidays 5%employerpensioncontribution Acollaborative,low-egoteamthatvaluesqualityengineeringandcontinuouslearning Autonomyandownershipoveryourwork Exposuretoawidevarietyoftechnologies,platforms,andclientchallenges ...

ML Engineer

Hiring Organisation
Tec Partners
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£750 - £900/day
developer experience for internal AI platform adoption. Key requirements: * Strong Python engineering experience * Experience with LLMs, AI agents, and agentic reasoning patterns * FastAPI and REST API development * RAG and prompt engineering experience * Kubernetes/containerisation knowledge * Exposure to MCP or similar AI tooling frameworks * Ability to work across platform ...

Mainframe Middleware Engineer - 6-Month Contract - Hybrid (London, or Edinburgh)

Hiring Organisation
Hamilton Barnes
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 400 Daily
Liberty within CICS (CICS Liberty runtime) Design and support secure, scalable, and resilient CICS Liberty environments aligned with enterprise standards Manage integration patterns, including REST/HTTP APIs and modern service exposure What You Will Ideally Bring Strong hands-on experience with CICS system setup and configuration (regions, JVM Servers ...

AI Engineer

Hiring Organisation
Fruition Group
Location
London, United Kingdom
Employment Type
Permanent
Salary
£90,000
copilots using platforms such as Copilot Studio Experience working with generative AI concepts (e.g. prompt design, RAG, grounding) Good understanding of integration patterns (APIs, REST/JSON, event-driven workflows) Experience with Microsoft ecosystem tools such as Power Platform and Microsoft 365 Knowledge of identity, access control, and secure system ...

Application Engineer

Hiring Organisation
Aimtech Recruitment Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£85,000
background within Financial Services, Investment Management, or similar regulated environments Proven experience delivering modern application and reporting solutions using Microsoft Azure Strong knowledge of REST APIs, App Services, Power BI, Power Platform, and data integration Experience with low-code and pro-code development across enterprise systems Understanding of AI integrations … paced environment Technical Skills Power Platform (Power Apps, Power Automate, Power Pages, Power BI) Python, JavaScript, TypeScript, Angular or React ASP.NET Core, Entity Framework, REST APIs, Swagger/OpenAPI SQL Server, PostgreSQL, NoSQL databases, vector databases FastAPI and AI service integrations (OpenAI, Claude, Gemini) Docker, Kubernetes (AKS), Azure App Services ...

Principle Java Engineer

Hiring Organisation
Profile 29
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£65,000 - £75,000 per annum
prepared to go through UK SC Security Clearance Strong experience in Java software engineering and object-oriented design Strong Spring (Boot) experience Experience with REST APIs, and microservice architectures Knowledge of Docker and Kubernetes for containerisation and orchestration Proficiency in Git, CI/CD pipelines, and automated testing frameworks Understanding … unrestricted for at least the next 5 years. Profile 29 recruitment keywords: Java software engineer object-oriented design OOD Camunda BPMN DMN Spring Boot REST API microservice architecture Docker Kubernetes containerisation orchestration Git CI/CD pipelines automated testing frameworks Kafka RabbitMQ Security authentication integration patterns enterprise systems agile digital ...

Java Engineer

Hiring Organisation
Profile 29
Location
South East London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£50,000
prepared to go through UK SC Security Clearance E xperience in Java software engineering and object-oriented design Spring (Boot) experience Experience with REST APIs, and microservice architectures Knowledge of Docker and Kubernetes for containerisation and orchestration Proficiency in Git, CI/CD pipelines, and automated testing frameworks Understanding … unrestricted for at least the next 5 years. Profile 29 recruitment keywords: Java software engineer object-oriented design OOD Camunda BPMN DMN Spring Boot REST API microservice architecture Docker Kubernetes containerisation orchestration Git CI/CD pipelines automated testing frameworks Kafka RabbitMQ Security authentication integration patterns enterprise systems agile digital ...

Salesforce Solution Architect

Hiring Organisation
NEEV LIMITED
Location
London, United Kingdom
Employment Type
Contract
work across complex, multi-team enterprise environments Experience aligning solutions across multiple stakeholders and architecture groups Technical Skills Strong understanding of API design, REST services, and integration patterns Hands-on experience with Salesforce platform (Sales Cloud/Service Cloud) Exposure to Salesforce Data Cloud (preferred) Exposure to Agentforce/ ...

Solutions Engineer (Crypto Technology)

Hiring Organisation
Iopa Solutions
Location
London Area, United Kingdom
Build relationships - become a trusted advisor for trading firms, exchanges, and institutional clients across the crypto ecosystem What we're looking for: APIs & Protocols REST APIs FIX Protocol WebSockets Domain knowledge Crypto/DeFi Trading systems Market structure Client skills Presales · Demos · Stakeholder comms Bonus points Scripting · SQL · Low-latency ...

HaloITSM Consultant

Hiring Organisation
SR2
Location
London, United Kingdom
Employment Type
Permanent
Salary
£70000 - £90000/annum
ITIL concepts and core ITSM processes across the service lifecycle Exposure to integrations between HaloITSM and external tools or interfaces Basic understanding of REST APIs and system integration principles would be beneficial Experience supporting platform rollouts, service improvements or digital transformation initiatives Strong verbal and written communication skills with ...

Power BI Developer

Hiring Organisation
Adecco
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£416 - £490/day
data modelling, ETL processes, and relational databases. - Solid understanding of data sources such as Oracle, SQL, and Dataverse. - Experience with C#, JavaScript, HTML5, and REST API. - Familiarity with Agile delivery, CI, and automation tools. - Knowledge of Azure services and Databricks is a plus! Desirable Qualities: - Excellent problem-solving abilities … 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. Adecco is a disability-confident employer. ...

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 ...

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 ...

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
London, UK
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 ...

Junior Frontend Developer

Hiring Organisation
BGC Group
Location
London, UK
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. ...

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. ...

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. ...

ESRI Dashboard Developer

Hiring Organisation
Valcon Group UK
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 35 Annual
experience Experience working in an agile or project-based environment Qualifications & Experience Desirable Requirements Knowledge of web development technologies: HTML, CSS, JavaScript Familiarity with REST APIs and ArcGIS REST services Experience with BI tools such as Power BI or Tableau alongside ArcGIS workflows ESRI Technical Certification (eg EADA, EAAD ...