9 of 9 Contract API Development Jobs in the UK excluding London

Java Developer - IAM/API Sheffield (1-2 days per month onsite) Inside IR35 We're supporting a leading financial services client in hiring a Java-focused Application Developer to build secure, scalable identity and access solutions within a modern cloud environment. This role centres on Java API … development, identity orchestration, and event-driven architectures, working closely with security and engineering teams to deliver robust IAM and data-driven solutions. Key Responsibilities Design and develop secure, scalable RESTful APIs (Java) supporting identity and access workflows Build and enhance identity lifecycle orchestration (provisioning, de-provisioning, access controls) Develop ...

Responsibilities Develop, enhance, and maintain Java-based applications and microservices. Work within cross-functional Agile teams (Developers, BAs, QAs, DevOps). Contribute to API development, integration, and backend service build. Deliver clean, testable, maintainable code aligned with best practices. Participate in code reviews, pair programming, and continuous improvement. ...

IR35 Day rate: Up to £600 per day Duration: Initial 3 months but will most likely extend Start date: ASAP Key words: ElementSuite, Integration, API, Dataflows We are looking for a HRIS system Integration Engineer to connect our Clients core HRIS (ElementSuite) with their AI recruitment tool (Talent.AI … data flow, writing the middleware or scripts to sync these systems, and ensuring that data remains secure and accurate across all platforms. Core Responsibilities - API Development & Mapping: Use REST APIs to create seamless data synchronisation between ElementSuite, Aslan, and Talent.AI. - Workflow Automation: Automate the _Hire-to-Onboard_ journey ...

second-line and occasional out-of-hours support Communicate technical ideas clearly to non-technical stakeholders Promote best practices and contribute to the wider development community Essential Skills & Experience Strong recent experience with Java 21 or later Excellent grasp of TDD and BDD Experience with large microservice architectures Agile … delivery experience API development (internal and external) Automated testing for CI/CD environments Comfortable working on Linux or macOS Ability to learn new tools and technologies quickly Understanding of responsive web design Desirable Skills Jackson, JAX-RS, Mockito Messaging platforms (Kafka or ActiveMQ) MongoDB or other document ...

part of a remotely distributed team. As such, I am keen to speak with candidates who have: Strong experience with Python in an application development role Proven experience writing SQL for relational databases Confident working with JSON in application and integration workflows Hands-on experience with API development ...

Role A leading Defence Client is seeking an experienced Applications Developer to support a high-profile, secure programme. This role involves delivering robust application development within a sensitive defence environment. Key Responsibilities Develop, enhance, and maintain application components according to project requirements. Build, test, and deploy APIs and data … resolve application and integration issues. Support Azure-based application hosting and associated services. Essential Skills & Experience Candidates must have experience with: Python SQL JSON API development (WebMethods, Kong) Containerised deployments ( Docker ) Microsoft Azure ...

Public Sector project. The role involves building Java-based microservices within an agile, pair-programming environment. Skills Required: Java 21+ TDD/BDD Microservices API development Automated testing for CI/CD Agile & pair programming Linux/Unix MongoDB or similar Essential: Active SC clearance Ability to work ...

with VMware , virtualisation technologies, and OpenShift Solid networking knowledge including TCP/IP, ports, Firewalls, and network security Experience with MuleSoft and Postman for API development, testing, and integration Strong troubleshooting, analytical, and problem-solving skills Ability to work across technical and business teams and communicate clearly with ...

CDE. Strong understanding of data exchange mechanisms and system interoperability. Experience in managing configurations across diverse tools to ensure compliance and efficiency. Familiarity with API development and information management principles, including ISO 19650. Excellent communication and stakeholder management skills. Qualifications: Bachelor's degree in computer science, Information Technology ...