15 of 15 Contract API Development Jobs in the UK

DevX Kotlin (or Java) Developer

Hiring Organisation
Experis
Location
Sheffield, South Yorkshire, United Kingdom
Employment Type
Contract
Contract Rate
£350 - £414/day
Required Experience in Kotlin (or significant Java experience with a willingness to learn Kotlin) Experienced in at least two or three of the following: API development, SQL/databases, HTML/Javascript Experience working with standard developer collaboration Tools: Github/Bitbucket, Jira, Confluence Optional Jenkins pipelines Test … automation ABOUT THE PROJECT The Developer Experience (DevX) Standards and Controls function is building a platform for control owners and development teams to manage/view their compliance with a range of software development controls. The candidate would be working on Kotlin and Java-based web applications ...

Java Developer

Hiring Organisation
Vallum Associates Limited
Location
Sheffield, South Yorkshire, Yorkshire, United Kingdom
Employment Type
Contract
Required Skills: Experience in Kotlin (or significant Java experience with a willingness to learn Kotlin) Experienced in API development , SQL/databases, HTML/Javascript Excellent writing skills and attention to detail in code Proactive person who will not wait to be told what to do next … microservices . Skills Require: Experience in Kotlin (or Java with willingness to learn Kotlin) Experienced in at least two or three of the following: API development, SQL/databases, HTML/Javascript Lots of experience of working with microservices Strong technical and analytical troubleshooting skills Experience in working ...

Java Software Engineer

Hiring Organisation
Sanderson Recruitment
Location
South West London, London, United Kingdom
Employment Type
Contract
Contract Rate
Up to £600 per day + Inside IR-35
working on backend services hosted in Azure. The role focuses on building and supporting Java applications and APIs, using VS Code as a primary development environment. You'll work closely with other engineers across backend, frontend, and DevOps, contributing to cloud-based systems. About the role Java backend development … with frontend, QA and DevOps teams Participate in code reviews and technical discussions Required skills Strong commercial Java experience Spring/Spring Boot REST API development Azure experience (App Services, AKS, or similar) VS Code for day-to-day development Git and version control Experience with relational ...

Software Developer

Hiring Organisation
Robert Walters
Location
Warwickshire, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
analysts, and other developers to understand requirements and deliver solutions. Integrate new software systems with existing technologies seamlessly. Troubleshoot and resolve technical issues during development and deployment phases. Write clean, efficient, and maintainable code following best practices. Ensure timely delivery of milestones while maintaining high-quality standards. Key Skills … C#, etc.]. Experience with frameworks like [e.g., React, Angular, .NET Core]. Solid understanding of database technologies (SQL/NoSQL). Expertise in API development and integration (RESTful APIs). Familiarity with cloud platforms (AWS, Azure, Google Cloud) is highly desirable. Proven experience working on tech implementation ...

SC Java Developer

Hiring Organisation
Experis
Location
Nationwide, United Kingdom
Employment Type
Contract
Role purpose/summary Core Skills: Backend: Java, Spring Boot, SQL/Report Writing Cloud: AWS, EBSA Additional Skills: Frontend: React, Next.js (non-essential) API development, microservices, CI/CD pipelines, containerization (Docker/Kubernetes), Greenfield development experience All profiles will be reviewed against the required skills ...

Technical Product Owner (R based)

Hiring Organisation
Stackstudio Digital Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
From £550 to £600 per day
libraries such as: tidyverse (data manipulation and visualization) data.table (high-performance data processing) caret/mlr3 (machine learning) shiny (interactive dashboards) plumber (API development) Create reusable R modules and packages for internal use Configure and manage R environments across local, server, and cloud platforms Optimize R code … privacy standards Promote coding standards, testing, and peer reviews for R scripts Evaluate and recommend new tools or libraries to enhance productivity Working with development teams to facilitate package development and deployment Configuring and managing package sources, including mirrors and custom repositories Ensuring the availability and accessibility ...

Wintel Engineer

Hiring Organisation
Experis
Location
Cumbria, United Kingdom
Employment Type
Contract
Contract Rate
£300 - £414/day
Role purpose/summary Core Skills: Backend: Java, Spring Boot, SQL/Report Writing Cloud: AWS, EBSA Additional Skills: Frontend: React, Next.js (non-essential) API development, microservices, CI/CD pipelines, containerization (Docker/Kubernetes), Greenfield development experience All profiles will be reviewed against the required skills ...

Frontend Developer

Hiring Organisation
Damia Group Ltd
Location
United Kingdom
Employment Type
Contract
Contract Rate
£500 - £550 per day
team success What you'll bring Angular - Solid experience with modern Angular frameworks, component architecture, and state management. js - Deep understanding of asynchronous programming, API development, and backend services. Azure - Proven experience designing, deploying, and managing scalable cloud infrastructure. Terraform - Hands-on experience with Infrastructure as Code, particularly … agile environments and documenting processes clearly and efficiently. Excellent communication and stakeholder engagement abilities, both technical and non-technical. Deep understanding of software development best practices, architectural standards, and design patterns. Capable of working independently, taking full ownership of technical challenges from identification to resolution or structured handover. Strong ...

Data Scientist

Hiring Organisation
Stackstudio Digital Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
From £400 to £450 per day
Bias etc. Implemented security best practices, Experience to address spikes and Denial of wallet attacks, DDoS attack and other Spike arrest strategies Knowledge of API Gateways and ISTIO, ability to Diagnose and intercept failures in End to End communication Hands-on Experience with API Development and Microservices ...

IFS Integration Developer

Hiring Organisation
IO Associates
Location
United Kingdom
Employment Type
Contract
Contract Rate
£550 - £600 per day
primary subject matter expert for IFS Cloud integrations within the programme. Collaborate with external integration partners to review and optimise integration designs. Support the development of integration architecture and manage data flows into IFS Cloud. Work with internal teams to translate business needs into effective integration strategies. Ensure … system integrations. Essential Skills & Experience: Proven experience with IFS Cloud integrations or transition projects (e.g., Apps 10 to Cloud). Strong understanding of API development, middleware, and data transfer processes. Ability to advise on solution design, with a focus on scalable and reliable integrations. Demonstrable experience working with ...

IFS Integration Developer

Hiring Organisation
IO Associates
Location
England, United Kingdom
Employment Type
Contract
Contract Rate
GBP 550 - 600 Daily
primary subject matter expert for IFS Cloud integrations within the programme. Collaborate with external integration partners to review and optimise integration designs. Support the development of integration architecture and manage data flows into IFS Cloud. Work with internal teams to translate business needs into effective integration strategies. Ensure … system integrations. Essential Skills & Experience: Proven experience with IFS Cloud integrations or transition projects (eg, Apps 10 to Cloud). Strong understanding of API development, Middleware, and data transfer processes. Ability to advise on solution design, with a focus on scalable and reliable integrations. Demonstrable experience working with ...

Senior Full Stack Engineer

Hiring Organisation
Access Computer Consulting
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £440/day
Java Full Stack, 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 ...

Android Developer

Hiring Organisation
scrumconnect ltd
Location
City, Newcastle Upon Tyne, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
standards Conduct code reviews and contribute to engineering best practices within the team Integrate with RESTful APIs and Back End services, working closely with API developers Troubleshoot and resolve performance issues, crashes, and production defects Support Google Play Store submission processes and manage release cycles Contribute to technical documentation … architecture decisions, and sprint ceremonies Essential Skills & Experience Strong experience in native Android development using Kotlin (Java experience also valued) Solid understanding of Android SDK, Android Studio, and the Google development ecosystem Experience with common Android architectural patterns (eg MVVM, MVI, Clean Architecture) Proficiency with Android frameworks such ...

IOS Developer

Hiring Organisation
scrumconnect ltd
Location
City, Newcastle Upon Tyne, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
standards Conduct code reviews and contribute to engineering best practices within the team Integrate with RESTful APIs and Back End services, working closely with API developers Troubleshoot and resolve performance issues, crashes, and production defects Support App Store submission processes and manage release cycles Contribute to technical documentation, architecture … decisions, and sprint ceremonies Essential Skills & Experience Strong experience in native iOS development using Swift Solid understanding of iOS SDK, Xcode, and the Apple development ecosystem Experience with common iOS architectural patterns (eg MVVM, VIPER, Clean Architecture) Proficiency with iOS frameworks such as UIKit, SwiftUI, Combine, Core Data ...

AI Architect

Hiring Organisation
Experis
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £635/day
model deployment. Use Python to automate processes and optimise workflows. Handle large datasets, including data preprocessing, feature engineering, and model evaluation. Lead the agile development of AI solutions from concept through deployment and ongoing improvement. Create and maintain comprehensive technical documentation. Communicate complex AI concepts clearly to stakeholders … solution engineering, with a focus on large language models, prompt engineering, and RAG implementations. Strong skills in data analytics, MLOps practices, and API development. Knowledge of governance frameworks for AI/ML models. Python expertise for automation. Experience working with large datasets and deploying AI solutions in an agile ...