13 systems integration developer jobs found in London

Up to £600 per day Outside IR35 6 months contract with potential extensions Hybrid working in London – 2 days per week Be-IT is working with a leading insurance business on a new product modernization initiative. We’re seeking a Senior Business Systems Analyst to play a key role in shaping and delivering a software Target Operating Model (TOM). This is a hybrid role combining business analysis, systems analysis, solution design and delivery transformation. Key Responsibilities Define and document the software Target Operating Model (TOM) Translate high-level business concepts into clear, actionable solutions Collaborate with Product, Engineering and Configuration teams Support system integration and delivery across complex environments About You Proven experience as a Senior Systems Analyst in complex delivery environments You are not expected to be a developer but have good technical mindset and understanding Experience designing...

Boomi Integration Developer (ERP Programme) Location: Fully Remote UK, with occasional travel to an office Contract Type: Contract Duration: 6 months Initial IR35 Status: Outside IR35 About the Role We are seeking a highly skilled Boomi Developer with proven experience integrating the ERP environment (Infor LN preferred) to join a digital transformation programme. You will be the core technical lead responsible for designing, building, and deploying robust, scalable integration pipelines between the ERP (Infor LN) and surrounding enterprise ecosystem (including CRM, MES, WMS, and third-party logistics/3PL partners). The ideal candidate will not just be a "component builder" in Boomi, but an integration specialist who understands complex manufacturing/distribution data flows and can navigate the nuances of Infor LN data structures. Key Responsibilities Design & Build: design, develop, and test end-to-end integration processes using the Boomi...

We're partnering with a leading energy trading organisation at the forefront of global commodities markets, currently investing heavily in their ETRM platform. As part of this growth, they're looking for an experienced Java Developer to join a high-performing engineering team delivering scalable, front-to-back trading solutions. This is a standout opportunity for a strong Java engineer with energy trading exposure who is keen to step into the world of Endur ETRM and OpenComponents, gaining highly sought-after domain and platform expertise  The Opportunity You'll work on business-critical systems that support trading, risk, and operations across power, gas, and wider commodities markets. The role blends core Java engineering with the chance to quickly upskill in Endur, supported by a team of experienced SMEs. This is ideal for someone looking to bridge the gap between pure software engineering and specialist ETRM platforms Responsibilities Designing and...

Job spec - Outside IR35 Responsibilities Designed subject areas using RPD (Repository) design in Oracle Analytics. Designed, developed, and implemented Oracle Analytics Server (OAS) security including users, roles, and data-level security. Designed, developed, and implemented ODI (Oracle Data Integrator) mappings for ETL processes. Designed, developed, and implemented Data Warehouse solutions including data modelling and integration. Developed and implemented OAS reports and dashboards to support business analytics and reporting needs. Provided production support for existing live OAS, ODI, data warehouse objects. Analysed and resolved data, ETL, and reporting issues to ensure system stability. Performed performance tuning of RPD objects, ODI mappings, queries, and reports. Maintained and documented standard processes, procedures, and technical documentation .

Freelance: Full Stack Developer (Insurance Experience Required) Start Date: 20/07/26 Duration: 6 months (extension highly likely) IR35 Status: Outside Location: London (Fully Remote) Capacity: 40 hours per week About the Role We're looking for an experienced Full Stack Developer with Insurance domain expertise to support the development and scaling of a high growth digital platform within the insurance sector. You will work across both Front End and Back End layers, collaborating closely with product, design, and engineering teams to deliver robust, scalable, and high performance solutions. A key focus of the role will be building modern user interfaces (Vue.js) while contributing to Back End services, APIs, and architecture that support complex insurance workflows and data models. Key Responsibilities Design, develop, and maintain full stack applications across Front End and Back End layers. Build modern, responsive Front End applications using Vue.js. Develop and maintain...

Our Telecoms client is looking for an experienced ServiceNow Architect to join their team. This is a 6 months contract initially and it is outside IR35. This is a hybrid role with 2 days per week working from the office in central London. Key Responsibilities * Serve as the technical authority on ServiceNow architecture, design, and best practices. * Define and drive the overall platform strategy, roadmap, and governance. * Lead the design and implementation of ServiceNow modules, including ITSM, ITOM, ITAM, HRSD, CSM, GRC, SecOps, and custom applications. * Ensure platform scalability, security, performance, and integrations with other enterprise systems. * Provide technical leadership in solution design workshops, architecture reviews, and governance boards. * Collaborate with stakeholders, business analysts, and development teams to align solutions with business objectives. * Mentor and guide ServiceNow developers and administrators on technical best practices. * Stay updated...

BUSINESS ANALYST (eCommerce * Retail * My Account) £450- £475 pd Outside IR35 12 months London, Z1 Hybrid My client are going through a re-platform of their 'My Account ' service, and are looking for a senior Business Analyst to support the teams and stakeholders. You will have experience working closely with UX, Design, Product, Engineering and more... you will ideally have had experience in similarly natured re-platforming projects in large-scale retail/eCommerece environments. Requirements & Analysis Interviews, workshops, and surveys with stakeholders to capture functional and non-functional requirements. Proactive analysis of business and user needs, translating these into clear, actionable requirements. Identify and address constraints (e.g., legal, privacy, and compliance). Map existing processes, highlighting gaps, risks, and opportunities for improvement. Collaboration & Stakeholder...

Dell Boomi Integration Consultant | £500- £550p/day Outside IR35 | 12 months initially | London/Birmingham Our client is looking for an experienced Dell Boomi Integration Consultant to support a large-scale enterprise integration programme. The role will focus on designing, developing and delivering integration solutions using Dell Boomi AtomSphere, connecting multiple enterprise platforms across cloud and on-premise environments. This is a hands-on technical position requiring strong Boomi development experience, API integration knowledge and the ability to support complex integration landscapes. Key Responsibilities: Design and develop scalable integration solutions using Dell Boomi AtomSphere, including process development, data mapping and profile configuration Create and manage secure Managed File Transfer (MFT) workflows to support high-volume and sensitive data transfers Publish, secure and govern REST/SOAP APIs through Boomi API Management,...

Dell Boomi Integration Consultant | £500-£550p/day Outside IR35 | 12 months initially | London/Birmingham Our client is looking for an experienced Dell Boomi Integration Consultant to support a large-scale enterprise integration programme. The role will focus on designing, developing and delivering integration solutions using Dell Boomi AtomSphere, connecting multiple enterprise platforms across cloud and on-premise environments. This is a hands-on technical position requiring strong Boomi development experience, API integration knowledge and the ability to support complex integration landscapes. Key Responsibilities: Design and develop scalable integration solutions using Dell Boomi AtomSphere, including process development, data mapping and profile configuration Create and manage secure Managed File Transfer (MFT) workflows to support high-volume and sensitive data transfers Publish, secure and govern REST/SOAP APIs through Boomi API Management, including gateway...

Automation Test Engineer | Outside IR35 | Remote Are you an experienced QA Automation Test Engineer who enjoys improving software quality through a blend of automation and hands-on testing? We're looking for someone with a strong technical testing background who can help deliver reliable, secure and accessible digital services within a collaborative Agile environment. The Role You'll be responsible for designing, executing and maintaining both manual and automated test activities across web applications and APIs. Working closely with developers, product teams and stakeholders, you'll ensure high-quality releases through robust test coverage, continuous improvement and early defect identification. Key Responsibilities Design, develop and maintain automated browser test suites using Ruby, Selenium and Cucumber/Gherkin. Execute comprehensive manual testing, including functional, regression and exploratory testing. Create detailed test cases, record defects clearly and work...

Job title: Security Lead - DV Cleared-(Contract Outside IR35) Location: UK only. Hybrid with attendance at client locations across the UK. Some client secure-area work required Employment type: Contract Outside IR35 Experience: 5+ years Security Clearance: DV (Developed Vetting) and UK Nationality - MANDATORY. Pre-cleared candidates strongly preferred 1. Role purpose The Security Lead is our accountable security owner for the managed service. The role leads on, and has day-to-day operational responsibility for, service security - working in collaboration with the client's Information & Security function, the client Security Operations Centre (SOC), the internal delivery team, and the third-party software vendor. 2. Context The service processes HR, Finance and Project data including OFFICIAL-SENSITIVE personal and financial data. The contractual security regime spans UK Government security policy, NCSC HMG IAS5, GDPR/DPA 2018, PCI-DSS where applicable,...

QA / Integration Tester - Commodity Trading - London - Outside IR35 A leading energy company is seeking a hands-on QA / Integration Tester to support its LNG Technology team in the implementation of a new trading platform. Overview This role sits at the heart of a major platform rollout, focusing on end-to-end integration testing across an ETRM platform and its connected trading and operational systems. You'll play a critical role in ensuring system stability, data integrity, and workflow accuracy across the broader LNG trading ecosystem. Key Responsibilities Own and execute integration testing for the trading platform Validate cross-system workflows and data flows across connected energy trading systems Identify, document, and track defects through to resolution Work closely with developers, business analysts, and stakeholders to ensure quality delivery Operate as the sole QA resource on the project, driving testing independently...

Senior C# Engineer (AI-Native & Agentic Engineering) – .NET 8/9, AWS Lambda/SQS – OUTSIDE IR35 £750–£800/day • 100% Remote • 11-month rolling contract A rare opportunity to lead the build of a greenfield SaaS product as a deeply senior, hands-on C# engineer. Reporting directly to the Director of Engineering, you’ll operate as the technical spearhead; shaping architecture, driving AI-native engineering patterns, and delivering complex distributed systems at pace. We’re looking for someone who is product-centric, agentic-minded, and thrives in ambiguity . If you enjoy solving hard problems, owning outcomes end-to-end, and setting the engineering bar for others, this one’s for you. What You’ll Bring: Senior/Staff-level backend engineering depth in C# and .NET 8/9 , with the ability to architect and lead distributed REST microservices at scale. Strong authority in AWS serverless : Lambda-first, with hands-on experience across API Gateway, SQS, Step...