60 systems integration developer jobs found

D365 F&O Integration Engineer / Developer | Contract | £500 per day | Outside IR35 | UK Remote / Hybrid Overview We are looking for an experienced D365 F&O Integration Engineer / Developer to support a high-profile transformation programme. This role will focus on designing, building and optimising integrations between Microsoft Dynamics 365 Finance & Operations and a range of external systems. This is a hands-on contract role suited to someone who is comfortable operating across architecture, development and delivery in a fast-paced environment. Key Responsibilities Design and build integrations between D365 F&O and third-party systems Develop and maintain APIs, data pipelines and middleware solutions Work with stakeholders to understand integration requirements and translate into technical solutions Support data migration and system interoperability across the wider platform Troubleshoot and resolve integration issues across environments...

AI Application Developer - FUZE (Hydra B) Oxford, UK (Hybrid) Permanent or 6-month contract Competitive salary Azure · Snowflake · Fabric ABOUT FUZE We're building a next-generation digital and energy platform for fleet electrification connecting vehicles, chargers, energy systems and operational data across the UK transport sector. Part of the HydraB Group, running on Microsoft Azure with Snowflake and Fabric. THE ROLE A new kind of position for a new kind of builder. We're looking for someone who develops software primarily using AI-native tools - Claude, Claude Code, MCP servers, custom skills and agentic workflows. You'll rapidly prototype and build applications, create reusable tooling, and help colleagues across the Group adopt AI-assisted development. This is a creativity-first role. Traditional technical backgrounds are a bonus, not a prerequisite. AI-NATIVE SKILLS WE VALUE → Prompt architecture — designing reusable, maintainable prompt...

Lead Backend Software Developer (Contract) London, Outside IR35 £500- £600 per day This is an exciting opportunity to join a fast-moving engineering function at a pivotal moment of technical uplift. They are investing heavily in strengthening their core platforms and commercial data systems, creating a strong mandate for senior engineers to step in, lead, and make an immediate impact. The Company They are a growing digital gaming organisation operating across multiple markets, currently modernising their backend ecosystem. With distributed teams across the UK and Europe, they are building scalable platforms that support a variety of customer-facing and internal products. Engineering quality, strong technical leadership, and delivery excellence are central to their transformation. Contractors join at a time when technical ownership is expanding in-house, creating real scope to shape systems and standards. The Role and Deliverables: * Lead...

Senior Full Stack Developer & AI Engineer Fully Remote Outside IR35 £440- £540 Per Day Immediate Start Date 4-6 Weeks long The Company They are a specialist technology consultancy focused on delivering AI-driven solutions for large, complex organisations. Their work centres on turning advanced AI capabilities into practical, production-ready applications that deliver measurable business value. The environment is collaborative, fast-moving, and driven by technical excellence. Engineers are trusted to lead, influence, and make meaningful decisions. The Role and Deliverables Lead the design and build of end-to-end AI-powered applications, from initial architecture through to production deployment. Architect scalable backend services and intuitive frontend interfaces that expose AI capabilities to enterprise users. Design and implement agentic AI systems, including orchestration patterns, tool integration, and evaluation...

Freelance Integrations Engineer | Retal Industry | Manchester (Hybrid) | Outside IR35 Contract Model: Full-time, 3 days per week on site in Manchester Duration: 7 months A well-known international retailer is hiring contract Integrations Engineers to join its Global Technology team in Manchester as part of a major nine-month data modernisation programme, replatforming its entire data and reporting estate onto Snowflake, dbt, Fivetran and a modern Azure integration stack. You will design, build, test and operate integrations on Azure - APIM, Logic Apps, Function Apps, Service Bus and Event Grid - connecting enterprise SaaS platforms including Workday, Oracle Symphony, NetSuite and ecommerce systems into the organisation's data, finance and operational infrastructure. You will also help stabilise and migrate flows from a legacy Mulesoft Anypoint estate onto the new Azure stack. What you will be doing: Building and operating Azure integrations across APIM,...

Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful and innovative technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens.   We are passionate about user-centred design, agile delivery, and building digital services that make a real difference. Our teams work at the forefront of innovation, helping organisations transform and deliver high-quality, scalable solutions that truly matter. Job Summary We are looking for an experienced Senior Full Stack Developer with expertise in enterprise web application development, WebCAF framework, and AI chatbot integration/support. The ideal candidate will be responsible for designing, developing, and maintaining scalable applications while contributing to AI-driven conversational solutions and digital transformation initiatives. The candidate should possess strong frontend and backend development...

Salesforce Field Service Lightning (FSL) Architect Location: Reading, UK (Hybrid – 2 Days/Week Onsite) Contract Type: Long-Term Contract Role Overview We are looking for an experienced Salesforce Field Service Lightning (FSL) Architect to lead large-scale FSL implementation and transformation initiatives for enterprise customers. This role requires strong hands-on technical expertise combined with architecture leadership, stakeholder engagement, and delivery oversight. The ideal candidate will have extensive experience delivering end-to-end Salesforce FSL implementations, integrating enterprise systems, and guiding distributed Agile teams in a hybrid working environment. Key Responsibilities Lead architecture, design, and delivery of Salesforce Field Service Lightning (FSL) implementations Drive end-to-end FSL solution design including: Dispatcher Console Scheduling & Optimization Service Territories Work Types Work Rules Service Resources Skills...

Job Title: Frontend Developer Rate: £450 - 500 (Outside IR35) Duration: 3 months Location: Remote Clearance: BPSS Stages: 1 Stage We are seeking an experienced Frontend Developer with strong ServiceNow platform expertise to support the development and enhancement of enterprise-grade digital services within a complex transformation environment. The role combines modern Front End engineering practices with ServiceNow platform development, configuration, and integration capabilities. Key Responsibilities Design, develop, and maintain Front End solutions within the ServiceNow platform. Build responsive and user-friendly interfaces using ServiceNow UI Frameworks, Service Portal, and modern web technologies. Configure and customise ServiceNow applications, workflows, forms, widgets, and user experiences. Develop API-driven integrations between ServiceNow and enterprise platforms such as Jira and other third-party systems. Collaborate with Back End developers, architects,...

About The Company Harnham - Data & Analytics Recruitment is a leading global recruitment firm specializing in data-driven roles across various industries. With a strong reputation for connecting top-tier talent with innovative organizations, Harnham prides itself on delivering tailored recruitment solutions that meet the evolving needs of the data and analytics landscape. The company operates across multiple regions, providing comprehensive staffing services that range from temporary and contract roles to permanent placements. Their commitment to excellence and deep industry expertise make them a trusted partner for both clients and candidates seeking to advance their careers in data, analytics, and technology sectors. About The Role We are seeking an experienced Senior NetSuite Developer to join our client’s dynamic team on a freelance basis. This role offers a unique opportunity to lead complex NetSuite transformation programs across multi-entity, international...

Data Transformation Architect – AWS / AI-Driven Data Modernisation Contract London / Hybrid Outside IR35 We are supporting a major enterprise-wide data transformation programme focused on modernising and simplifying a complex legacy data and administration landscape. This role will play a key part in shaping and delivering a next-generation approach to enterprise data ingestion, transformation and mapping using cloud-native and AI-enabled tooling. This is a hands-on transformation role suited to someone who combines strong technical depth with the ability to engage confidently with both business and technical stakeholders. The successful consultant will build on an existing AWS-based proof of concept and help evolve it into a scalable operational capability. The Opportunity The organisation currently ingests data from a wide range of internal and external source systems, with significant manual effort involved in mapping, transforming and translating data into...

A rapidly expanding, technology-focused organisation is seeking a contract Frontend Developer to join its software engineering function. This role offers an excellent opportunity to contribute to modern frontend applications within a smaller agile squad, collaborating closely with engineering and wider business teams in a fast-paced environment. The Role Develop and enhance key frontend business systems using Vue.js Collaborate with engineering teams on technical design and system improvements Support integration between internal platforms and applications Participate in Agile ceremonies including sprint planning, stand-ups, and retrospectives Contribute to technical decision-making and architecture discussions Perform code reviews and maintain high development standards What You'll Need Strong commercial experience with Vue.js Experience developing scalable frontend applications Solid understanding of Agile delivery methodologies Experience...

Job Title: Endur Developer-AVS and JVS scripting Location: Hybrid London, UK (2days/week) Duration: 6months+ 800GBP/day Outside IR35 Job Overview We are looking for an experienced Endur Developer with strong expertise in Endur development, AVS, and JVS scripting to join a leading energy trading technology team. The ideal candidate will have hands-on experience delivering enhancements, integrations, and support within the Endur/Openlink platform in a fast-paced trading environment. Key Responsibilities Design, develop, and support solutions within the Endur trading platform. Develop and maintain AVS and JVS scripts for trading, risk, and operations workflows. Work closely with traders, business analysts, and support teams to understand business requirements. Customize and enhance Endur modules including front office, back office, settlements, and risk. Build and support interfaces between Endur and external systems. Troubleshoot production issues and...

Integrations Engineer (Outside IR35) Numi has partnered with an international retailer founded. They run hundreds of shops across the UK, North America, and Asia, with additional shops run by franchise partners around the world. The company is transforming from a bricks-and-mortar focussed retailer to a truly customer-centric digital business with a leading consumer brand. They are aiming to better understand their customers and their preferences, so now is an exciting time to join. The Role The Integrations Engineer is hands-on in the day-to-day build and operation of the integration estate. You will primarily work on Azure – APIM, Logic Apps, Function Apps, Service Bus and Event Grid – connecting SaaS systems including Workday, Oracle Symphony, NetSuite and ecommerce platforms into data, finance and operational systems. All new integration assets are being built on Azure. There is also a legacy Mulesoft Anypoint estate which the team is in the process of migrating...

Senior Integration Analyst & Developer (Oracle) Fully Remote 6-month rolling contract £600 per day Outside IR35 We are seeking a Senior Integration Analyst & Developer with strong Oracle Fusion Cloud experience to support a major integration programme across Finance and Project Accounting systems. The role involves designing, building, and supporting integrations using Oracle Integration Cloud (OIC), along with developing transformation logic using SQL, PL/SQL, XML, JSON, XSLT, and related technologies. You will also build and enhance BIP reports and data models, develop VBCS applications, and support Fusion ERP integration touchpoints. Key responsibilities include delivering end-to-end integrations in OIC, troubleshooting and resolving integration issues, supporting SIT and UAT cycles, and working closely with implementation partners to review technical designs and ensure high-quality delivery. Required experience includes 6+ years in Oracle...

Boomi Technical Consultant (Developer) - Contract - MUST be SC Cleared Role Title: Boomi Technical Consultant Contract Type: Contractor/Outside IR35 (if applicable) Location: UK-based/Hybrid or Remote Sector: Public Sector Duration: Initial 6 months with extension potential Overview We are seeking two experienced Boomi Technical Consultants to support a major digital integration programme for a UK public sector client. The successful contractors will play a key role in designing, developing, and implementing enterprise integration solutions using the Boomi platform. This is an excellent opportunity to contribute to high-impact transformation initiatives within a complex stakeholder environment. Key Responsibilities Design, build, test, and deploy integrations using Boomi AtomSphere Develop APIs, data integrations, and workflow automations Collaborate with architects, business analysts, and project teams to deliver scalable integration solutions Support...

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...

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...

Role: Senior Python Backend Developer - API Design (Fully remote Part-time contract) Rate: £325 p/d (Outside IR35) Duration: 15 June 2026 till end of December 2026 Workload: 110 days billable allowance (To be allocated during contract period) Location: 100% Fully Remote (Cloud-based collaboration platform) Eligibility: Candidates MUST be a national of a NATO member country. The Role We are seeking an expert Senior Python Backend Developer to design, build, and operate scalable services and data pipelines powering maritime geospatial and temporal analytics. This is a hands-on engineering role with strong end-to-end feature ownership, you will be translating complex domain models into clean, testable code using Domain-Driven Design (DDD), defining clear bounded contexts, and building production-grade APIs. What You'll Be Doing: API & Microservices: Developing asynchronous, production-grade APIs and microservices using FastAPI. Graph...

🚀 Contract Opportunity – Business Central Developer/Consultant - 8 months - OUTSIDE IR35 - REMOTE/Occasional onsite work in London office 🚀 I’m currently looking for an experienced Microsoft Dynamics 365 Business Central Consultant to join a major ERP transformation programme on an 8-month contract. This is a fantastic opportunity to play a key role in driving finance system optimisation, automation, and process excellence within an international environment 🌍 🔍 What we’re looking for: • Microsoft Dynamics 365 Business Central expert with 4+ years’ hands-on experience (Microsoft Certification preferred) • Strong knowledge of finance operations and accounting principles • Proven experience in system configuration, setup, and process mapping • Experience with Power Platform tools (Power Apps & Power Automate) • Ability to produce clear functional specifications for technical teams 💼 What you’ll be doing: • Translate business requirements into...