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        Senior Java Developer

        Invitise Ltd
        LS11, Leeds
        Up to £700 per day
        Were looking for a Senior Java Developer for our public sector client based in Leeds on an initial 12-month contract paying up to £700 per day Inside IR35. This role allows hybrid working with an expectation to attend the office 3 days per week. You will need to either hold current BPSS clearance or have the ability to pass it, and be eligible for SC clearance. The successful Senior Java Developer will possess proven skills working with the following * Java 21 (or later) * Test Driven Development (TDD) and Behaviour Driven Development (BDD) * Large microservice architectures * Agile environments and pair programming * Implementing APIs for internal and external use * Building automated test suites in CI/CD environments * Unix/Linux operating systems * Communicating technical concepts to non-technical audiences * Jackson, JAX-RS, Mockito * ActiveMQ or Kafka
        Were looking for a Senior Java Developer for our public sector client based in Leeds on an initial 12-month contract paying up to £700 per day Inside IR35. This role allows hybrid working with an expectation to attend the office 3 days per week. You will need to either hold current BPSS clearance or have the ability to pass it, and be eligible for SC clearance. The successful Senior Java Developer will possess proven skills working with the following * Java 21 (or later) * Test Driven Development (TDD) and Behaviour Driven Development (BDD) * Large microservice architectures * Agile environments and pair programming * Implementing APIs for internal and external use * Building automated test suites in CI/CD environments * Unix/Linux operating systems * Communicating technical concepts to non-technical audiences * Jackson, JAX-RS, Mockito * ActiveMQ or Kafka
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        NEW
        Contract: Until end of 2025, rolling extensions - Inside IR35 - Were partnering with a leading financial services client in Sheffield who are seeking a Skilled Python Developer to join their team. Youll be instrumental in building scalable automation solutions to streamline and optimise database operations. This is a hybrid role (3 days per week in Sheffield), offering an initial contract until the end of the year with strong potential for rolling extensions. * Design, develop, and maintain automation solutions for database operations and rollouts * Build and integrate APIs for database management and automation workflows * Troubleshoot automation issues across scripting, APIs, and containerised environments * Proven experience in Python development & FastAPI * Strong knowledge of PostgreSQL database administration * Excellent problem-solving, debugging, and analytica
        Contract: Until end of 2025, rolling extensions - Inside IR35 - Were partnering with a leading financial services client in Sheffield who are seeking a Skilled Python Developer to join their team. Youll be instrumental in building scalable automation solutions to streamline and optimise database operations. This is a hybrid role (3 days per week in Sheffield), offering an initial contract until the end of the year with strong potential for rolling extensions. * Design, develop, and maintain automation solutions for database operations and rollouts * Build and integrate APIs for database management and automation workflows * Troubleshoot automation issues across scripting, APIs, and containerised environments * Proven experience in Python development & FastAPI * Strong knowledge of PostgreSQL database administration * Excellent problem-solving, debugging, and analytica
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        Senior Software Engineer

        Commify
        Nottingham, Nottinghamshire
        £60,000 - £70,000 a year
        Commify is on a mission to revolutionise business communications, and we are looking for an experienced Senior Software Engineer to join our passionate team. In this role, you will lead the development and enhancement of our cutting-edge messaging platform, ensuring it meets the evolving needs of businesses around the world. Your expertise will help shape our product vision, drive innovation, and create exceptional user experiences. As a Senior Software Engineer, you will collaborate closely with product managers, designers, and fellow engineers to deliver high-quality software solutions. We value creativity, critical thinking, and a proactive approach to problem-solving. If you have a strong technical background and want to work in a fast-paced environment, Commify is the perfect place for you. Requirements
        Commify is on a mission to revolutionise business communications, and we are looking for an experienced Senior Software Engineer to join our passionate team. In this role, you will lead the development and enhancement of our cutting-edge messaging platform, ensuring it meets the evolving needs of businesses around the world. Your expertise will help shape our product vision, drive innovation, and create exceptional user experiences. As a Senior Software Engineer, you will collaborate closely with product managers, designers, and fellow engineers to deliver high-quality software solutions. We value creativity, critical thinking, and a proactive approach to problem-solving. If you have a strong technical background and want to work in a fast-paced environment, Commify is the perfect place for you. Requirements
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        NEW
        One of our leading clients is looking to recruit a UI Engineer / Developer / Front End Developer / Software Engineer. Location remote - Duration 6 months - Experience in a UI Engineer / Software Engineer / Front End Developer / Angular Developer role - Angular experience essential - Building and maintaining responsive and accessible interfaces at scale - Familiarity with state management libraries (e.g., Redux, Zustand) and component-based architectures - Solid understanding of web performance optimisation, testing (unit, integration, and end-to-end), and cross-browser compatibility - Collaborate with UX designers and product teams to translate design wireframes and prototypes into working front-end components - Ensure a consistent look and feel across all digital products through the implementation and maintenance of a shared design system.
        One of our leading clients is looking to recruit a UI Engineer / Developer / Front End Developer / Software Engineer. Location remote - Duration 6 months - Experience in a UI Engineer / Software Engineer / Front End Developer / Angular Developer role - Angular experience essential - Building and maintaining responsive and accessible interfaces at scale - Familiarity with state management libraries (e.g., Redux, Zustand) and component-based architectures - Solid understanding of web performance optimisation, testing (unit, integration, and end-to-end), and cross-browser compatibility - Collaborate with UX designers and product teams to translate design wireframes and prototypes into working front-end components - Ensure a consistent look and feel across all digital products through the implementation and maintenance of a shared design system.
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        A ServiceNow Architect is sought by our client to work with their team to deliver continuous improvement and development of the Roadmap for end users. The existing team is a mixture of their own resources and 3rd party suppliers. You will be a highly experienced ServiceNow consultant, with a proven track record in ServiceNow development, including certification and experience in implementing different ServiceNow implementation levels and components.. Key Details * INSIDE IR35 * Remote working - Hybrid model * 2 days per week on-site available across various UK locations * 12 months * Must be UK resident * Must be able to work without sponsorship * Must be a ServiceNow Certified Technical Architect - Essential Criteria * Current ServiceNow Certified Technical Architect * Significant previous experience of working at a Senior ServiceNow level, including Architecture and
        A ServiceNow Architect is sought by our client to work with their team to deliver continuous improvement and development of the Roadmap for end users. The existing team is a mixture of their own resources and 3rd party suppliers. You will be a highly experienced ServiceNow consultant, with a proven track record in ServiceNow development, including certification and experience in implementing different ServiceNow implementation levels and components.. Key Details * INSIDE IR35 * Remote working - Hybrid model * 2 days per week on-site available across various UK locations * 12 months * Must be UK resident * Must be able to work without sponsorship * Must be a ServiceNow Certified Technical Architect - Essential Criteria * Current ServiceNow Certified Technical Architect * Significant previous experience of working at a Senior ServiceNow level, including Architecture and
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        NEWFEATURED
        SC Cleared Blue Prism Developer - 6 months - circa £500 a day INSIDE IR35 - Remote - We are looking for an SC Cleared BluePrism Developer to work within the Central Government sector - Looking for an experienced Automation developer. 1. Must have SC clearance - 2. Must have BluePrism Development experience - 3. Ideally have experience in PowerAutomate/APIs development - 4. Must be able to delivery independently, reporting to an automation lead but these automations will be theirs to own - Please forward your profile for consideration - Damia Group Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept our Data Protection Policy which can be found on our website. Please note that no terminology in this advert is intended to discriminate on the grounds of a person's
        SC Cleared Blue Prism Developer - 6 months - circa £500 a day INSIDE IR35 - Remote - We are looking for an SC Cleared BluePrism Developer to work within the Central Government sector - Looking for an experienced Automation developer. 1. Must have SC clearance - 2. Must have BluePrism Development experience - 3. Ideally have experience in PowerAutomate/APIs development - 4. Must be able to delivery independently, reporting to an automation lead but these automations will be theirs to own - Please forward your profile for consideration - Damia Group Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept our Data Protection Policy which can be found on our website. Please note that no terminology in this advert is intended to discriminate on the grounds of a person's
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        Senior PHP Developer - UK Remote

        Global Technology Solutions Ltd
        UK
        £350- £370 per day - Inside IR35
        Senior PHP Developer - Location: Home-based - Remote - UK Based applicants only - Duration: Contract until 31 st December 2025 Expected extension - Rate: £350 - £370 Inside IR35 - Are you an experienced Senior PHP Developer with a passion for building secure, scalable, and business-critical applications? Were looking for a Senior PHP Developer to join our transformation team someone who can drive technical excellence, mentor others, and deliver innovative solutions. What Youll Do * Develop and maintain business systems, applications, and integrations. * Write secure, scalable, and maintainable code following best practices (MVC standards). * Design and build intuitive user interfaces using HTML, CSS, JavaScript (Vue.js or similar). * Review code and ensure high-quality, defect-free releases. * Document system architecture, design iterations, and processes.
        Senior PHP Developer - Location: Home-based - Remote - UK Based applicants only - Duration: Contract until 31 st December 2025 Expected extension - Rate: £350 - £370 Inside IR35 - Are you an experienced Senior PHP Developer with a passion for building secure, scalable, and business-critical applications? Were looking for a Senior PHP Developer to join our transformation team someone who can drive technical excellence, mentor others, and deliver innovative solutions. What Youll Do * Develop and maintain business systems, applications, and integrations. * Write secure, scalable, and maintainable code following best practices (MVC standards). * Design and build intuitive user interfaces using HTML, CSS, JavaScript (Vue.js or similar). * Review code and ensure high-quality, defect-free releases. * Document system architecture, design iterations, and processes.
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        See yourself at Dataminr - As a Senior Product Manager, Cybersecurity, you'll lead the development of cutting-edge, AI-powered cybersecurity products at Dataminr. In this role you'll be on the front lines, defining and delivering revolutionary, AI-powered products that solve the most critical security challenges. You'll work with world-class engineers and data scientists to turn groundbreaking ideas into market-defining solutions. This role is for a builder who thrives on fast-paced, high-impact worksomeone who is just as comfortable shaping product strategy as they are digging into the latest LLMs for threat detection. This remote position is open to candidates who are located in the UK or Ireland. AI Innovation at Dataminr - Working at Dataminr youll have the opportunity to tackle the most exciting trends in AI on a daily basis to power a revolutionary product that
        See yourself at Dataminr - As a Senior Product Manager, Cybersecurity, you'll lead the development of cutting-edge, AI-powered cybersecurity products at Dataminr. In this role you'll be on the front lines, defining and delivering revolutionary, AI-powered products that solve the most critical security challenges. You'll work with world-class engineers and data scientists to turn groundbreaking ideas into market-defining solutions. This role is for a builder who thrives on fast-paced, high-impact worksomeone who is just as comfortable shaping product strategy as they are digging into the latest LLMs for threat detection. This remote position is open to candidates who are located in the UK or Ireland. AI Innovation at Dataminr - Working at Dataminr youll have the opportunity to tackle the most exciting trends in AI on a daily basis to power a revolutionary product that
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        NEW
        You will bring deep expertise in Okta capabilities, including Okta Customer Identity Cloud (CIC) , Okta Workforce Identity Cloud (WIC) , Single Sign-On, Adaptive Multi-Factor Authentication, API Access Management, Lifecycle Management, and Universal Directory. * Hands-on experience delivering Okta Identity Cloud solutions, including configuration of SSO, Adaptive MFA, API Access Management, and Lifecycle Management. * Proficiency with Okta Hooks (Inline, Event), Okta Workflows , and automation via Okta API , Terraform , or Okta Integration Network .
        You will bring deep expertise in Okta capabilities, including Okta Customer Identity Cloud (CIC) , Okta Workforce Identity Cloud (WIC) , Single Sign-On, Adaptive Multi-Factor Authentication, API Access Management, Lifecycle Management, and Universal Directory. * Hands-on experience delivering Okta Identity Cloud solutions, including configuration of SSO, Adaptive MFA, API Access Management, and Lifecycle Management. * Proficiency with Okta Hooks (Inline, Event), Okta Workflows , and automation via Okta API , Terraform , or Okta Integration Network .
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        Collaborate with Ops Tech to manage API use, system performance, and platform scalability. * Working knowledge of JavaScript or Python for API interactions for customizations.
        Collaborate with Ops Tech to manage API use, system performance, and platform scalability. * Working knowledge of JavaScript or Python for API interactions for customizations.
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        NEW
        You'll drive key capabilities like multi-tenancy, RBAC, and API experiences to meet the needs of our largest enterprise customers and MSSP partners. As a Lead Product Manager, your primary responsibility will be to own critical enterprise capabilities including multi-tenancy experiences, user access management (RBAC and data access control), API experiences, and foundational account infrastructure. * Strong understanding of enterprise platform requirements, particularly in multi-tenant environments, role-based access control (RBAC), identity and access management (IAM), and API development.
        You'll drive key capabilities like multi-tenancy, RBAC, and API experiences to meet the needs of our largest enterprise customers and MSSP partners. As a Lead Product Manager, your primary responsibility will be to own critical enterprise capabilities including multi-tenancy experiences, user access management (RBAC and data access control), API experiences, and foundational account infrastructure. * Strong understanding of enterprise platform requirements, particularly in multi-tenant environments, role-based access control (RBAC), identity and access management (IAM), and API development.
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        NEW
        As a Principal Software Engineer, youll create, set and influence the technical direction of our software and architecture through hands-on development, you'll design and implement effective, scalable solutions across key product and service areas, influencing both strategic and day-to-day engineering decisions. By fostering relationships with cross-functional partners, you will contribute to the development of technical strategy. Youll help grow other software engineers through technical mentorship and guidance. About the Team - Our Product and Engineering team works with our award-winning products to help us create a single experience to help customers assess risk, detect threats and automate their security programs for over 11,000 organizations. These teams use best-in-class technology, innovative research, and broad, strategic expertise to develop both new and exi
        As a Principal Software Engineer, youll create, set and influence the technical direction of our software and architecture through hands-on development, you'll design and implement effective, scalable solutions across key product and service areas, influencing both strategic and day-to-day engineering decisions. By fostering relationships with cross-functional partners, you will contribute to the development of technical strategy. Youll help grow other software engineers through technical mentorship and guidance. About the Team - Our Product and Engineering team works with our award-winning products to help us create a single experience to help customers assess risk, detect threats and automate their security programs for over 11,000 organizations. These teams use best-in-class technology, innovative research, and broad, strategic expertise to develop both new and exi
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        NEW
        As a Staff Software Engineer, youll be driving and proposing strategies around complex and unique technical problems affecting our core platform and business needs. You'll be instrumental in communicating technical standards and gaining buy-in on solutions across engineering teams. By serving as an expert and owner in multiple areas of the codebase, you will successfully deliver the architecture and execution of major platform components from conception to release. About the Team - Our Platform Foundations team is responsible for building and maintaining the robust, scalable, and resilient infrastructure that underpins all of our products and services. We provide the essential building blocks, services, and tooling that empower development teams across the organisation to deliver high-quality, high-performance solutions to our customers.
        As a Staff Software Engineer, youll be driving and proposing strategies around complex and unique technical problems affecting our core platform and business needs. You'll be instrumental in communicating technical standards and gaining buy-in on solutions across engineering teams. By serving as an expert and owner in multiple areas of the codebase, you will successfully deliver the architecture and execution of major platform components from conception to release. About the Team - Our Platform Foundations team is responsible for building and maintaining the robust, scalable, and resilient infrastructure that underpins all of our products and services. We provide the essential building blocks, services, and tooling that empower development teams across the organisation to deliver high-quality, high-performance solutions to our customers.
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        NEW
        At Amentum, we're not just solving problems; we're engineering the future. Our team is driven by an unyielding commitment to innovation, integrity, and collaboration, tackling some of the most significant challenges in science, security, and sustainability. If you're passionate about making a real impact and want to be part of a community that values ethical excellence, this is the place where your ambition can thrive. Here, we believe that success comes from continuously pushing boundaries and working together to deliver on our promises. We embrace challenges with confidence and are dedicated to creating a secure and vibrant future for all. Well inspire and empower you to deliver your best work so you can evolve, grow and succeed today and into tomorrow. We offer an exciting range of opportunities to develop your career within a supportive team who always strive to d
        At Amentum, we're not just solving problems; we're engineering the future. Our team is driven by an unyielding commitment to innovation, integrity, and collaboration, tackling some of the most significant challenges in science, security, and sustainability. If you're passionate about making a real impact and want to be part of a community that values ethical excellence, this is the place where your ambition can thrive. Here, we believe that success comes from continuously pushing boundaries and working together to deliver on our promises. We embrace challenges with confidence and are dedicated to creating a secure and vibrant future for all. Well inspire and empower you to deliver your best work so you can evolve, grow and succeed today and into tomorrow. We offer an exciting range of opportunities to develop your career within a supportive team who always strive to d
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        NEW
        About us - Club L London are the next-generation online retailer refining accessible luxury for forward-thinking women worldwide. Delivering timeless and trend-oriented styles in sizes 4-20 for every life moment, we design proudly in-house in the UK; with premium quality, exceptional fit and affordable style at the forefront. Collaboration, communication and curiosity drive our extraordinary workforce an ambitious team of diverse, experienced and up-and-coming talents that we think youd fit right into. A role at Club L is more than a job, its a lifestyle for the innovative, inspired and intuitive thinker. Key Responsibilities * Take ownership of new system integrations, including planning, development, deployment, and maintenance. * Enhance and maintain existing integrations, ensuring scalability, performance, and reliability.
        About us - Club L London are the next-generation online retailer refining accessible luxury for forward-thinking women worldwide. Delivering timeless and trend-oriented styles in sizes 4-20 for every life moment, we design proudly in-house in the UK; with premium quality, exceptional fit and affordable style at the forefront. Collaboration, communication and curiosity drive our extraordinary workforce an ambitious team of diverse, experienced and up-and-coming talents that we think youd fit right into. A role at Club L is more than a job, its a lifestyle for the innovative, inspired and intuitive thinker. Key Responsibilities * Take ownership of new system integrations, including planning, development, deployment, and maintenance. * Enhance and maintain existing integrations, ensuring scalability, performance, and reliability.
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        As a Principal Software Engineer, youll create, set and influence the technical direction of our software and architecture through hands-on development, you'll design and implement effective, scalable solutions across key product and service areas, influencing both strategic and day-to-day engineering decisions. By fostering relationships with cross-functional partners, you will contribute to the development of technical strategy. Youll help grow other software engineers through technical mentorship and guidance. About the Team - Our Product and Engineering team works with our award-winning products to help us create a single experience to help customers assess risk, detect threats and automate their security programs for over 11,000 organizations. These teams use best-in-class technology, innovative research, and broad, strategic expertise to develop both new and exi
        As a Principal Software Engineer, youll create, set and influence the technical direction of our software and architecture through hands-on development, you'll design and implement effective, scalable solutions across key product and service areas, influencing both strategic and day-to-day engineering decisions. By fostering relationships with cross-functional partners, you will contribute to the development of technical strategy. Youll help grow other software engineers through technical mentorship and guidance. About the Team - Our Product and Engineering team works with our award-winning products to help us create a single experience to help customers assess risk, detect threats and automate their security programs for over 11,000 organizations. These teams use best-in-class technology, innovative research, and broad, strategic expertise to develop both new and exi
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        Frequently Asked Questions

        How many contract API jobs are there in Bellasize?
        There are 0 contract API jobs within 20 miles of Bellasize available on CWJobs right now.

        What other similar jobs are there to contract API jobs in Bellasize?
        As well as contract API jobs in Bellasize, you can find contract IT, Software Development, Infrastructure, amongst many others.