1 to 25 of 84 Contract REST Jobs

Senior Full Stack Developer (React & C#.NET)

Hiring Organisation
Adecco
Location
London, United Kingdom
Employment Type
Contract
proficiency in React.js, JavaScript/TypeScript, Redux/RTK, and modern UI patterns, develop framework is essential Back-end: Expertise in C# .NET Core, REST APIs, and microservices-based development is essential Python (pyspark): Experience with data pipelines and analytics is a plus. Power BI: Familiarity with developing dashboards ...

Full Stack Developer

Hiring Organisation
Devonshire Hayes Recruitment Specialists Limited
Location
City of London, London, England, United Kingdom
Employment Type
Contractor
Contract Rate
£45,000 - £65,000 per annum
trading environments Experience with WebSockets or SignalR for real-time communication Backend development experience with .NET (C#) and/or Python Strong understanding of REST APIs and microservices architecture Experience with message brokers (e.g. RabbitMQ or Kafka) Knowledge of caching technologies (e.g. Redis) Experience with Azure DevOps/CI/ ...

Senior FullStack Developer

Hiring Organisation
Adecco
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £650/day
architectures, and creating a reusable component library Experience with Telemetry and observability of front-end applications Back-end: Expertise in C# .NET Core , C#, REST APIs, Web APIs, and microservices-based development. Experience in transforming monolithic applications into composable microservices, or modular monoliths is a plus. Python (pyspark): Some hands ...

Senior FullStack Developer

Hiring Organisation
Adecco
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£600 - £650 per day
architectures, and creating a reusable component library Experience with Telemetry and observability of front-end applications Back-end: Expertise in C# .NET Core , C#, REST APIs, Web APIs, and microservices-based development. Experience in transforming monolithic applications into composable microservices, or modular monoliths is a plus. Python (pyspark): Some hands ...

Java Backend Developer

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Contract, Work From Home
functional teams Essential Skills and Experience Strong commercial experience with Java (version 17 or above, 21 preferred) Proven experience with Spring Boot Experience building REST APIs and microservices from scratch Strong testing skills using JUnit and Mockito , with exposure to TDD Experience with PostgreSQL or other relational SQL databases Hands ...

Senior Backend Java Engineer

Hiring Organisation
Sanderson
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£550 - £575 per day
Strong hands-on commercial coding experience with modern Java (Java v17 min, v21 LTS or newer preferred) Strong experience with Spring Boot Experience building REST APIs/microservices from scratch Strong testing skills using JUnit, Mockito, and ideally TDD Experience with PostgreSQL or another relational SQL database Experience with Docker ...

Technical Architect

Hiring Organisation
Yolk Recruitment Limited
Location
Andover, Hampshire, South East, United Kingdom
Employment Type
Contract
Contract Rate
£700.00 - £800.00 per day
OWASP, NCSC principles). Experience with DevOps, CI/CD pipelines and modern software delivery practices. Strong knowledge of microservices, APIs and web services (REST, SOAP, JSON). Experience with authentication and authorisation technologies such as SAML, OAuth, OpenID Connect, Active Directory, ADFS and LDAP. Strong understanding of Agile methodologies ...

Senior .Net Developer

Hiring Organisation
LANCESOFT LTD
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
experience with C# and .NET (.NET Core/.NET) Excellent Object Oriented Programming (OOP) skills and design principles Proven experience designing and implementing APIs (REST/JSON) Solid understanding of application architecture, performance, and scalability Experience with SQL databases (e.g. SQL Server) Familiarity with unit testing, integration testing ...

Product Development Specialist

Hiring Organisation
IBEX RECRUITMENT LTD
Location
London, United Kingdom
Employment Type
Contract
/.NET/.NET Core TypeScript & JavaScript We are also looking for engineers with broader experience across modern technologies such as: React Python Node.js REST APIs & Microservices SQL/NoSQL Databases Docker/Kubernetes CI/CD Pipelines What Were Looking For Strong frontend engineering experience with full stack capability ...

Principal Technical Lead

Hiring Organisation
RSSB
Location
City of London, London, United Kingdom
Employment Type
Contract, Work From Home
Core code-first migrations and data modelling. Strong front-end engineering skills in React and TypeScript, including component architecture, state management, and integration with REST/SignalR backends. Solid understanding of event-driven architectures. Hands-on experience with PostgreSQL or comparable relational databases. Experience with API and application security. Practical ...

Integration Architect

Hiring Organisation
Capita Shared Services Limited
Location
London, United Kingdom
Employment Type
Contract
APIs), including consumption of Oracle-defined integration patterns, authentication models, and non-functional constraints Deep understanding of integration patterns, middleware, APIs (REST/SOAP), and data transformation technologies Proven experience integrating MuleSoft with Oracle SaaS/PaaS platforms (e.g. Fusion ERP/HCM, OIC, OCI APIs), including consumption of Oracle ...

Web GIS Developer

Hiring Organisation
Stackstudio Digital Ltd
Location
Wokingham, Berkshire, South East, United Kingdom
Employment Type
Contract
Contract Rate
From £300 to £340 per day
databases (SQL Server/PostGIS/Oracle Spatial). Ensure seamless integration of GIS applications with other enterprise systems and workflows. Develop and consume REST APIs, Web Services, and OGC standards (WMS/WFS/KML/GML). Support testing, troubleshooting, and performance tuning of GIS applications. Required Skills ...

RabbitMQ Messaging Specialist

Hiring Organisation
Talent Smart Limited
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 650 Daily
clustered and high-availability configurations Strong Scripting and automation skills in PowerShell Strong development capability in Python for tooling, automation, and integration Experience with REST APIs, message brokers, and event-driven architectures Familiarity with containerised environments (Docker/Kubernetes) is highly desirable Experience with monitoring tools (eg Prometheus, Grafana ...

Specialised Engineer HCL Commerce

Hiring Organisation
Vallum Associates Limited
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
From £500 to £550 per day
develop, and maintain HCL Commerce/IBM WebSphere Commerce components and extensions Build and enhance backend services using Java, J2EE, Spring, Spring Boot, and REST APIs Ensure applications meet performance, scalability, availability, and security standards Diagnose and resolve complex issues across application, integration, and infrastructure layers Conduct root cause analysis ...

Kotlin/Java Developer

Hiring Organisation
Hays Specialist Recruitment Limited
Location
Sheffield, South Yorkshire, England, United Kingdom
Employment Type
Contractor
Contract Rate
£350 - £360 per day
sharing initiatives Required Skills & Experience Strong experience in Kotlin or Java with the ability and willingness to work across both where required Experience developing REST APIs and working with frameworks such as Spring Solid understanding of microservice-based, API-driven architectures Experience with AWS or other cloud platforms Strong analytical ...

Technical Lead (Hands-on) - Sitecore

Hiring Organisation
Synechron
Location
Sheffield, Yorkshire, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
architecture, content modelling, and multi-site setups Headless delivery experience (eg, JSS, Experience Edge) is desirable Backend Strong C#/.NET (preferably ASP.NET Core) REST API design and integration patterns Experience applying Sitecore Helix principles Exposure to Azure (or similar cloud hosting) is a plus, but not essential. Frontend Working ...

Lead Java Tech Role- 3 month Contract

Hiring Organisation
Opus Recruitment Solutions Ltd
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£475 - £525 per day
experience with Java (11+) & Spring Boot Event-driven architecture expertise – Kafka or similar Cloud experience – ideally AWS; Kubernetes knowledge beneficial Deep understanding of microservices, REST APIs & distributed systems Experience with SQL/NoSQL databases Strong CI/CD, automated testing & DevOps awareness Ability to influence technical direction across teams Comfortable ...

RPA Developer (UiPath)

Hiring Organisation
Infoplus Technologies UK Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
From £450 to £500 per day
Skills & Experience 36 years of hands on UIPath experience (Studio, Orchestrator, Assistant). Proficiency in VB.NET/C#, Regex, LINQ, and working with APIs (REST/SOAP). Experience integrating with OCR tools (ABBYY, Document Understanding, AI Center). Understanding of BPM, workflow modelling, and process engineering. Exposure ...

Senior Backend Software Engineer (API & Cloud)

Hiring Organisation
AMS CWS
Location
Edinburgh, Midlothian, Scotland, United Kingdom
Employment Type
Contract
standards, DevSecOps, and industry best practices, and delivering solutions within SCRUM agile ways of working. Design, develop, and maintain backend services and APIs (REST and event driven). Build and operate APIs and MCPs using Apigee Hybrid/X. Apply API standards and industry best practices for design, versioning, security ...

Specialised Engineer - HCL Commerce

Hiring Organisation
Project Recruit
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
Commerce/IBM WebSphere Commerce Suite components and extensions. Build and enhance Back End services using Java, J2EE, Spring/Spring Boot, and REST APIs Ensure solutions meet scalability, performance, availability, and security standards Diagnose and resolve complex issues across application, integration, and infrastructure layer Perform root cause analysis ...

Vue Developer

Hiring Organisation
Teksystems
Location
Bristol, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £450/day
with the ability to collaborate effectively with diverse teams, including designers and product stakeholders. Additional Skills & Qualifications Understanding of backend concepts and APIs, including REST APIs and GraphQL schema design. Knowledge of Figma and the ability to make updates to Figma designs. Familiarity with DevOps practices and CI/ ...

Full Stack .NET Web Developer

Hiring Organisation
Association For Project Management
Location
Princes Risborough, Buckinghamshire, South East, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£55,000
full stack developer using C# and .NET/.NET Core to build web applications and services Experience integrating with third-party systems via APIs (REST/JSON), including CRM platform Salesforce and SFMC Skills Full-stack development skills with proficiency in C#, .NET/.NET Core and web development fundamentals ...

Senior Full Stack Engineer

Hiring Organisation
Access Computer Consulting
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £440/day
React, Kubernetes & Docker. Experience in building responsive, component based user interfaces using modern front end frameworks. Hands on expertise in API design and development (REST/JSON), including versioning and backward compatibility. Experience with UI testing, component testing, and front end build tooling. Experience in CI/CD pipelines, GitOps ...

MS Dynamics 365 Developer

Hiring Organisation
Infoplus Technologies UK Ltd
Location
Leeds, West Yorkshire, Yorkshire, United Kingdom
Employment Type
Contract
Contract Rate
From £350 to £400 per day
. Architecture & Integration Experience designing enterprise-grade, scalable Dynamics architectures. Integration experience with ERP systems, third-party applications, and legacy platforms. Knowledge of REST/SOAP APIs, OAuth, and security models. DevOps & Quality Experience with CI/CD pipelines (Azure DevOps preferred). Familiarity with automated testing. Strong understanding ...

Solution Architect

Hiring Organisation
Sanderson Recruitment
Location
Cardiff, South Glamorgan, Wales, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£600 - £700 per day
Orchestration Experience designing and implementing enterprise business critical, high volume, scalable, high availability systems running in 24/7 regulated environments. Strong API experience (REST, WebSocket) Experience of Domain Driven Design. Experience with CQRS TDD/BDD & DDD. Strong understanding and experience design patterns. Strong experience with SQL and NoSQL ...