28 systems integration developer jobs found

Contract | Outside IR35 | £500- £600 per day | 6 months initial | Remote with 1 day per week in Northampton We are seeking an experienced Lead Systems Developer to take ownership of the design, delivery, and technical direction of core business applications, with a primary focus on Microsoft Dynamics, Azure, and integrated enterprise systems. This is a hands-on leadership role, ideal for someone who combines strong technical depth with the ability to guide developers, shape architecture, and deliver robust solutions across multiple workstreams. Role overview Working closely with Developers and Business Analysts, you will act as the senior technical authority within the team, ensuring solutions are secure, scalable, and aligned to the wider technology roadmap. You will lead complex design and build activity, mentor developers, and provide technical direction across Dynamics, integrations, and platform extensions. Key responsibilities...

Contract | Outside IR35 | £500-£600 per day | 6 months initial | Remote with 1 day per week in Northampton We are seeking an experienced Lead Systems Developer to take ownership of the design, delivery, and technical direction of core business applications, with a primary focus on Microsoft Dynamics, Azure, and integrated enterprise systems. This is a hands-on leadership role, ideal for someone who combines strong technical depth with the ability to guide developers, shape architecture, and deliver robust solutions across multiple workstreams. Role overview Working closely with Developers and Business Analysts, you will act as the senior technical authority within the team, ensuring solutions are secure, scalable, and aligned to the wider technology roadmap. You will lead complex design and build activity, mentor developers, and provide technical direction across Dynamics, integrations, and platform extensions. Similar contract roles in the market for senior Dynamics and...

Your new role We are looking for an experienced Full Stack C# Web Developer with strong React expertise to support the development and enhancement of a web-based compliance portal for a key programme. Responsibilities Design, develop, and maintain a secure, scalable compliance web portal Build and enhance back-end services using C# and .NET / .NET Core Develop modern, responsive front-end applications using React Integrate front-end components with RESTful APIs Work closely with product owners, business analysts, and QA engineers Ensure high standards of security, performance, and maintainability Contribute to code reviews, documentation, and technical standards What you'll need to succeed Proven experience as a Full Stack Developer Strong C# and .NET / .NET Core development background Commercial experience building applications with React Solid understanding of JavaScript / TypeScript, HTML, and CSS Experience with REST APIs and JSON-based integration...

Your new role We are looking for an experienced Full Stack C# Web Developer with strong React expertise to support the development and enhancement of a web-based compliance portal for a key programme. Responsibilities Design, develop, and maintain a secure, scalable compliance web portal Build and enhance Back End services using C# and .NET/.NET Core Develop modern, responsive Front End applications using React Integrate Front End components with RESTful APIs Work closely with product owners, business analysts, and QA engineers Ensure high standards of security, performance, and maintainability Contribute to code reviews, documentation, and technical standards What you'll need to succeed Proven experience as a Full Stack Developer Strong C# and .NET/.NET Core development background Commercial experience building applications with React Solid understanding of JavaScript/TypeScript, HTML, and CSS Experience with REST APIs and JSON-based integration...

Senior Software Engineer (Contract) 3-Month Engagement | Outside IR35 | Up to £475 per day | Hybrid (London / Ipswich) A rapidly expanding SaaS company is seeking an experienced Senior Software Engineer to support their agile delivery team on an initial 3-month contract. This position offers a strong mix of hands-on development and strategic input, with the opportunity to shape system architecture, influence engineering practices, and contribute directly to product evolution. You'll play a key role in designing, building, and improving scalable cloud-native applications, while also guiding team members and promoting high standards across the development lifecycle. Core expertise required: Advanced experience with C# and .NET (Framework and Core) Frontend development using TypeScript, HTML, CSS, and either React or Vue Proven track record with AWS, ideally including serverless architectures (e.g., Lambda) Experience with CI/CD pipelines and Infrastructure as Code...

Shopify App Developer Location: Remote in UK Duration: ~3 months (Project-Based Contract - potential for renewal) Rate: £450 - £550 per day Outside IR35 Overview We're looking for an experienced Shopify App Developer to support a 3-month project focused on expanding an existing Shopify app used by publishers to sell publications via their storefronts. The app is already in production, and the goal is to enhance functionality, extend integrations, and improve fulfilment workflows. This role requires someone who can quickly get up to speed with an existing codebase and deliver high-quality improvements with minimal ramp-up time. Key Responsibilities Enhance and extend an existing Shopify app Build new features using Shopify GraphQL APIs Implement and optimise Shopify Fulfilment API integrations (critical) Develop Back End services in Java (Spring Boot) Ensure stable and scalable integration between Shopify and internal systems Debug and resolve...

Contract Business Analyst (Outside IR35) Location: Salford, Manchester (Hybrid – 2–3 days in office) Rate: £350 – £400 per day (Outside IR35) Start: Immediate / Max 1 week notice Duration: 6 Months ( With a possibility of extension to a further 6 months) About the Role: We’re working with a leading B2B technology firm looking to bring in an experienced Contract Business Analyst to support delivery across complex systems, integrations, and transformation initiatives. This is a hands-on role where you’ll be working closely with engineering, product, and stakeholders to define, shape, and deliver high-impact solutions. Key Responsibilities: Elicit, analyse, and document business and technical requirements across multiple workstreams Work on complex systems and integrations (APIs, third-party platforms, legacy-modern system interactions) Translate business needs into clear functional and non-functional requirements Produce high-quality...

Senior .NET / Full Stack Developer – Hybrid – £500/day Outside IR35 | C# | Azure | Event-Driven Systems | Payments | API-Driven We have a unique opportunity for a Senior .NET / Full Stack Developer to join a payments company. As a Senior .NET / Full Stack Developer , you’ll play a key role in building and scaling a high-throughput payments platform as the business enters its next phase of growth. This includes launching new products, enabling new partner integrations, and expanding a platform that already powers multiple live financial services products used globally. You’ll be building on top of a modern, cloud-native platform built with .NET and Azure , designed around API-first architecture and event-driven microservices . The platform supports complex payment flows, partner integrations, and high-volume transaction processing. This is a hands-on senior engineering role where you’ll contribute to architectural discussions, drive engineering best...

6-Month Contract Hybrid Working (2 days onsite in the Brentwood area)  Up to £530 per day Outside IR35 A hybrid IT Project Manager & Business Analyst is required to support a transforming business with the delivery of a key systems integration project. This role will play a central part in bridging technology and operations, leading the implementation of an automated interface between a bespoke SQL-based application and Microsoft Dynamics 365 Finance / F&O. The focus is not only on technical delivery, but also on ensuring operational teams are fully prepared to adopt new processes and systems. Key Responsibilities Work collaboratively within a multi-disciplinary delivery team, including internal developers and third-party suppliers Map and document key business processes, ensuring alignment between technical solutions and operational requirements Translate business needs into clear, actionable technical requirements Lead change management...

Job Title: Oracle Project Manager Location: Hybrid - 3 Days per week onsite (Midlands) Salary/Rate: DOE Start Date: As Soon As Possible Job Type: 6-Month Contract - Outside IR35 Oracle Project Manager needed for the end-to-end delivery of Oracle ERP integrations across Legacy and new Oracle Cloud ERP applications. Job Responsibilities/Objectives: Lead the end-to-end delivery of Oracle ERP integrations Manage build activities, unit/system testing, release management, and production cutover. Coordinate and lead distributed nearshore and offshore delivery teams. Drive Agile delivery practices, including sprint planning, stand-ups, retrospectives, and reporting. Track burn-down/burn-up metrics and maintain transparency of programme progress. Manage and escalate risks, issues, and dependencies to senior programme leadership. Work closely with developers, testers, architects, and business stakeholders to deliver against challenging timelines. Support budget tracking and...

Full Stack Engineer - Contract 3 months initial contract with possible extension Farnborough - Hybrid £500-550pd Outside IR35 Security Clearance : It is an essential requirement for candidates to obtain UK Security Clearance (SC Level) prior to appointment. We're looking for a Full Stack Engineer who thrives on solving complex technical challenges and wants their work to deliver real-world operational impact. This is an opportunity to build secure, high-performance digital solutions used in critical environments, where reliability, scalability, and thoughtful engineering truly matter. As a Full Stack Engineer, you'll play a key role in designing, building, and delivering secure applications. You'll collaborate with engineers, architects, and delivery specialists to create technology that enables faster, safer, and more informed decision-making. What You'll Do; Collaborate with the Technical Lead to design and contribute to high-level and low-level system...

Oracle Project Manager - 6 Months initial – Hybrid (Midlands) – Outside IR35 VIQU have partnered with a leading enterprise organisation undergoing a complex Oracle Fusion Finance Transformation. As part of this programme, they are seeking an Oracle Project Manager to oversee the technical delivery of integrations between legacy systems and Oracle ERP. The Role: We are looking for a tech-savvy Oracle Project Manager to focus on the end-to-end delivery of Oracle ERP integrations, covering build, unit / system testing, release management, and production deployment. This role requires someone who can bring structure, pace, and accountability. Key Responsibilities & Experience: Manage the delivery of inbound and outbound integrations between legacy systems and Oracle ERP (circa 60 integrations and 10 endpoints). Oversee build, testing, release management, and production cutover activities. Lead distributed nearshore and offshore teams, ensuring effective collaboration...

Oracle Project Manager - 6 months initial - Hybrid (Midlands) - Outside IR35 VIQU have partnered with a leading enterprise organisation undergoing a complex Oracle Fusion Finance Transformation. As part of this programme, they are seeking an Oracle Project Manager to oversee the technical delivery of integrations between Legacy systems and Oracle ERP. The Role: We are looking for a tech-savvy Oracle Project Manager to focus on the end-to-end delivery of Oracle ERP integrations, covering build, unit/system testing, release management, and production deployment. This role requires someone who can bring structure, pace, and accountability. Key Responsibilities & Experience: Manage the delivery of inbound and outbound integrations between Legacy systems and Oracle ERP (circa 60 integrations and 10 endpoints). Oversee build, testing, release management, and production cutover activities. Lead distributed nearshore and offshore teams, ensuring effective collaboration...

Full Stack Engineer - Contract 3 months initial contract with possible extension Farnborough - Hybrid £500-550pd Outside IR35 Security Clearance : It is an essential requirement for candidates to obtain UK Security Clearance (SC Level) prior to appointment. We're looking for a Full Stack Engineer who thrives on solving complex technical challenges and wants their work to deliver real-world operational impact. This is an opportunity to build secure, high-performance digital solutions used in critical environments, where reliability, scalability, and thoughtful engineering truly matter. As a Full Stack Engineer, you'll play a key role in designing, building, and delivering secure applications. You'll collaborate with engineers, architects, and delivery specialists to create technology that enables faster, safer, and more informed decision-making. What You'll Do; Collaborate with the Technical Lead to design and contribute to high-level and low-level system...

Opening: Join the Mission We deliver secure, mission‑critical platforms and services for government and regulated organisation’s operating in high‑assurance environments. Our teams work at the intersection of cloud engineering, DevSecOps, and platform enablement, helping organisation’s adopt Google Distributed Cloud (air‑gapped GCP). This role offers the opportunity to shape automation‑first testing strategies for new cloud‑native platforms, influence tooling and quality standards, and ensure solutions are secure, resilient, compliant, and testable by design. Role Purpose As an Automation Test Engineer, you will be responsible for designing, building, and operating automated testing capabilities across platform and application delivery teams. You will: Define and implement test automation strategies aligned to IaC, CI/CD, and DevSecOps practices Select, evaluate, and trade‑off test tooling suitable for air‑gapped Google Distributed Cloud environments Build and...

Senior Technical Lead Developer - Microsoft Dynamics 365 CE Contract | 6 months | Outside IR35 | Competitive Day Rate | Hybrid We are recruiting a Senior Technical Lead Developer with strong Microsoft Dynamics 365 CE/CRM experience for an initial 6?month contract. This is a hands?on technical leadership role, ideal for a senior developer who enjoys owning technical delivery while providing light?touch line management, mentoring and coaching . The role does not involve heavy people management but does require clear technical authority. Responsibilities Lead the technical design and delivery of Dynamics 365 CE solutions Build and customise Dynamics using plugins, workflows and integrations Act as technical escalation point across the development team Provide mentoring and coaching to developers Translate business requirements into scalable, secure technical solutions Contribute to architectural decisions while remaining hands?on Essential Skills &...

Lead Test Engineer £450 per day Outside IR35 6-month contract (initially) Remote working (UK-based) Skills and Experience: Proven experience as a Test Lead, QA Lead, or Senior Test Engineer in agile delivery environments Strong track record of defining and executing test strategies in fast-paced, pre-production settings Hands-on expertise in automated testing, with strong preference for Playwright Extensive experience in integration testing, API testing and system validation Practical knowledge of application security testing, including OWASP principles and security scanning tools Experience testing AI and machine learning products Strong understanding of modern software development and CI/CD practices Knowledge of accessibility testing and inclusive design principles Familiarity with WCAG 2.2 standards Experience using accessibility testing tools such as axe, WAVE or similar Opportunity to work on genuinely...

Help us to achieve our goal to be the global leader in total quality services. With your help we will achieve this by delivering Total Quality 360, a comprehensive suite of cutting-edge services which combine quality engineering, cyber security, conformance & interoperability and content quality to deliver end-to-end total quality solutions. Here at Resillion, our culture is based on an ‘if you see something, say something’ attitude where we take responsibility. It’s one where we expect to adapt and embrace change as the company grows. It’s based on recognising the individual worth of every one of our employees and developing their skills to keep us all at the forefront of our industry. Above all, it’s a culture where we’re passionate about what we do, and we’re committed to the greater good of the company. If you would like to be part of our journey, then this role may be the one for you. Job Description Senior Test Analyst – Retail Banking...

Company Description Help us to achieve our goal to be the global leader in total quality services. With your help we will achieve this by delivering Total Quality 360, a comprehensive suite of cutting-edge services which combine quality engineering, cyber security, conformance & interoperability and content quality to deliver end-to-end total quality solutions. Here at Resillion, our culture is based on an ‘if you see something, say something’ attitude where we take responsibility. It’s one where we expect to adapt and embrace change as the company grows. It’s based on recognising the individual worth of every one of our employees and developing their skills to keep us all at the forefront of our industry. Above all, it’s a culture where we’re passionate about what we do, and we’re committed to the greater good of the company. If you would like to be part of our journey, then this role may be the one for you. Job Description Senior Test Analyst –...

Full job description Company Description Help us to achieve our goal to be the global leader in total quality services. With your help we will achieve this by delivering Total Quality 360, a comprehensive suite of cutting-edge services which combine quality engineering, cyber security, conformance & interoperability and content quality to deliver end-to-end total quality solutions. Here at Resillion, our culture is based on an ‘if you see something, say something’ attitude where we take responsibility. It’s one where we expect to adapt and embrace change as the company grows. It’s based on recognising the individual worth of every one of our employees and developing their skills to keep us all at the forefront of our industry. Above all, it’s a culture where we’re passionate about what we do, and we’re committed to the greater good of the company. If you would like to be part of our...