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48 integration engineer jobs found

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integration engineer £500 - £600
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Outside Spy
Jun 16, 2026
Duration not stated
Backend Engineer - Outside IR35 - Public Sector - Integration/Salesforce at Tecknuovo Ltd, London, £550 per day
£550 per day
Outside Spy London, UK
Tecknuovo is a deliberately different digital consultancy, delivering secure, modern solutions while upskilling client teams to ensure zero long-term dependency. We are seeking a Backend Engineer to support a government digital environment. Focused on Back End services, integrations, and data flows supporting Salesforce, with a strong emphasis on APIs and system connectivity. Immediate start required. Key Responsibilities Build and maintain Back End integrations supporting Salesforce Design and support APIs and data services Work with Salesforce teams to ensure clean, scalable integrations Support data querying and transformation where needed Essential Skills Strong API development and integration experience Salesforce platform exposure (integration-side focus) Experience working with data and Back End services Nice to Have Boomi/Boomie/Middleware tools SQL Experience with Salesforce event-driven or integration patterns Location: London (ad-hoc) Contract:...
Outside Spy
Jun 11, 2026
Duration not stated
Senior Software Engineer - APIs & Integration (Azure & Kafka) at SR2 - Socially Responsible Recruitment, London, £500-£525 per day
£500 - £525 per day
Outside Spy London, UK
Senior Software Engineer - APIs & Integration (Azure & Kafka) Contract Length: 6 months Initial Rate: £500-£525 per day Location: Remote IR35: Outside We're supporting a major cloud transformation programme and are looking for an experienced API Architect to help modernise a critical enterprise platform. This role is focused on transforming a large API estate, migrating services from on-premise infrastructure into Azure, and evolving a monolithic architecture into a modern, scalable, event-driven ecosystem. This is a hands-on architecture role where you'll work closely with engineering teams to define architectural standards, guide implementation, and support the delivery of a long-term modernisation strategy. The Opportunity You'll play a key role in: Leading the migration of business-critical APIs from on-premise environments into Azure Defining and driving API architecture across a complex technology landscape Decomposing a large API monolith into...
Outside Spy
Jun 19, 2026
up to 6 Months
Digital Tracking & Analytics Engineer (Web Developer) at Head Resourcing Ltd, Glasgow, 1 to 2 Months, £400-£550 per day
£400 - £550 per day
Outside Spy Glasgow, Scotland, UK
Digital Tracking & Analytics Engineer (Web Developer) needed urgently for our FMCG client based in Glasgow (though the role can be worked fully remotely) for an initial 1-2-month contract. The right candidate must have extensive demonstrable experience as a Web Developer working with paid advertising, cookie consent, Google Ads etc along with strong experience in Google Tag Manager (GTM) alongside strong Advert platform tracking experience, including Meta & TikTok and CAPI. This role is Outside IR35 and can be worked fully remote. The role requires a strong Digital Tracking Engineer/Web Analytics implementation specialist to audit, stabilise and remediate their current TikTok, Meta, GA4 and GTM tracking setup across both web browser and Server Side implementations. Some of the deliverables will include ensuring clean, deduplicated and accurate event tracking across browser and server, ensuring sessions and conversions are attributing correctly and improve...
Outside Spy
Jun 18, 2026
Duration not stated
​​​​​​​Software Test Engineer / Lead – Outside IR35 at SDL Solutions Limited , UK, £350 to £500 per Day
£350 - £500 per day
Outside Spy United Kingdom
Software Test Engineer / Lead – Outside IR35   My client is the fastest growing technology company who is seeking a Software Test Engineer / Lead for an initial 12-month contract. As a Software Test Engineer / Lead you should have experience with both Manual and Automated Testing, Regression Testing or Performance Testing. As a team player you will be liaising with other multi-functional testers and software designer / developers to understand the business requirements and product functionality, You will be involved in software test spec, manual test cases, automated test scripts and performance testing solutions that will need to be implemented throughout the delivery pipeline. Involvement in production and maintenance of system testing and systems integration of hardware and software components through to resolution of all faults found in the software. You will ideally be degree educated in an engineering or science subject, with a good IT content and ISTQB® certification is...
Outside Spy
Jun 18, 2026
6 Months or more
D365 Business Central Data Migration at The Engage Partnership Ltd, United Kingdom, 6 Months, £500-£600 per day
£500 - £600 per day
Outside Spy United Kingdom
D365 Business Central Data Migration Engineer Outside IR35 | 6 months | £500-£600 per day | Remote (with occasional travel) Overview This role focuses on the technical delivery of data migration into Dynamics 365 Business Central, covering ETL, data transformation and automation to ensure accurate and scalable migration outcomes. Key Responsibilities Design and build ETL processes and migration solutions Extract, transform and cleanse data from Legacy systems (DBs, APIs, flat files) Load data into D365 BC using RapidStart, APIs or integration tools (ADF, SSIS) Validate data, support SIT/UAT and reconciliation activities Collaborate with data leads, functional consultants and architects Support cutover, deployment and post go-live hypercare Document processes, scripts and migration runbooks Key Skills Strong ETL/data migration engineering experience D365 Business Central (or similar ERP) exposure Solid SQL/data modelling knowledge...
Outside Spy
Jun 18, 2026
6 Months or more
Data Engineer (SC & NPPV3 Cleared) - Contract (Outside IR35) at Sanderson Government & Defence, London, 6 Months, £520-£570 per day
£520 - £570 per day
Outside Spy London, UK
Data Engineer (SC & NPPV3 Cleared) - Contract (Outside IR35) Location: London (3 days onsite per week) Duration: 3 months (initial) Rate: Up to £570 per day (Outside IR35) Start: ASAP We are currently seeking an experienced Data Engineer for an urgent contract opportunity with a London-based client. This role requires candidates to already hold active NPPV3 and SC clearance, due to the nature of the work. Key Requirements Proven experience as a Data Engineer in enterprise environments Strong expertise in data pipelines, ETL processes, and data integration Hands-on experience with modern data tools and platforms (eg Azure, AWS, Databricks, Spark, SQL, Python) Ability to design, build, and optimise scalable data solutions Strong understanding of data modelling and data warehousing concepts Excellent stakeholder communication skills Mandatory Criteria Active NPPV3 clearance Active SC (Security Clearance) Ability to work onsite in London 3 days per week...
Outside Spy
Jun 17, 2026
Duration not stated
SC Cleared Technical architect - Remote at Opus Recruitment Solutions, UK, £600 to £650 per Day
£600 - £650 per day
Outside Spy Remote (United Kingdom)
SC Cleared Technical Architect Client: Government IR35: Outside SC: Yes Start: 1/7 End: 4/1 Rate: £600 - Provide technical leadership and architectural direction across the Cloud - Platform roadmap, working in partnership with the Lead Site Reliability - Engineer to ensure coherent and aligned delivery across an existing, complex AWS-based ecosystem. - Define and evolve the existing AWS organisational design (including OUs and SCP strategy) to enable stronger governance and security controls (inline with UK Government security standards) while maintaining appropriate autonomy for GDS teams. - Lead the design and implementation of AWS Control Tower and landing zone patterns, ensuring they are scalable, reusable, and aligned to organisational security and compliance requirements. - Oversee the evolution of account vending approaches, improving automation, standardisation, and onboarding experience for teams consuming the platform. - Drive the integration of AWS Identity...
Outside Spy
Jun 17, 2026
Duration not stated
Senior Infrastructure Engineer - SC - MOD/ Defence at Talent Locker, Farnborough, £550 to £600 per Day
£550 - £600 per day
Outside Spy Farnborough, UK
Senior Infrastructure Engineer - MOD / Defence / SC Cleared Outside IR35 - £550-600 per day - Long projects Farnborough - onsite Contract role for a senior level infrastructure engineer, who is a self-starter, can lead projects and adaptable to different technologies within a secure / defence environment. You will need to have active Security Clearance (SC) and be on site in Farnborough 5 days per week. You will need to have demonstrable experience and deep knowledge of the following: Windows Server / Domain Services - strong understanding of AD, GPOs, domain architecture. VMware - hands‑on experience with VCF, NSX, vCenter, SAN integration, and ESXi. Hyper‑V - practical exposure to virtualisation management and configuration. PKI / Encryption - understanding of certificate services, key management, and secure communication. Networking - switch configuration, VLANs (including SAN‑related VLANs), routing fundamentals. Linux - operational capability across common...
Outside Spy
Jun 17, 2026
Duration not stated
AI Engineer - Contract - Outside IR35 at Oliver Bernard, London Area, £600 per day
£600 per day
Outside Spy London Area, United Kingdom
🚀 AI Engineer (Contract) | Outside IR35 | Up to £600/day OB are currently partnered with a high-growth tech company that's investing heavily in AI and automation across the business. They're looking for an AI Engineer to join a small, high-impact team responsible for building AI-powered tools, LLM integrations, intelligent workflows and internal platforms that are transforming how teams operate day-to-day. You'll be working with technologies including Python, TypeScript, LLMs, Kubernetes, APIs, workflow automation tools and modern AI infrastructure, with the autonomy to take ideas from concept through to production. 💡 Looking for: • Strong Python and/or TypeScript experience • Commercial experience building AI applications • Experience with LLMs, embeddings and AI tooling • API integration experience • Kubernetes / cloud-native environments 📍 Shoreditch (2-3 days per week) 💰 Up to £600/day 📝 Outside IR35 If you're interested in building AI...
Outside Spy
Jun 17, 2026
Duration not stated
Senior Software Engineer (Contract) at Softwire, London Area, £500-£650 per day
£500 - £650 per day
Outside Spy London Area, United Kingdom
Senior Software Engineer - Outside IR35 - Contract (Insurance) About the role Essential: Self-starter, someone who can pick up context quickly, drive outcomes efficiently, and to a high quality Competent in doing high-level designs, solution management, and scoping Understanding of data modelling best practices Ability to translate technical solutions to non-technical stakeholders and bring them on the journey Experience working in an agile delivery environment Experience working with React, TypeScript, Azure, Microsoft SQL, and Databricks (if they don’t have all of these, that’s workable, but be good to understand any they don’t have experience with) Frontend: React + TypeScript + Vite Material UI with Emotion for styling TanStack React Query 5 for server state React Router 7 React Hook Form+Yup for forms/validation MSAL for Entra ID auth Jest+Testing Library for unit tests; Playwrightfor E2E and visual tests Hosted as an Azure Static...
Outside Spy
Jun 17, 2026
up to 6 Months
Senior Voice AI Engineer at Oscar Associates Ltd, London, 3 to 4 Months, £350-£500 per day
£350 - £500 per day
Outside Spy London, UK
?? Senior Voice AI Engineer - Contract (Outside IR35) | £350-500/day | 3-4 months | Remote ?? We're looking for a hands-on engineer to take an existing voice AI proof-of-concept and turn it into a reliable, production-grade system ready for real users. The prototype works - but it now needs to be made fast, stable, scalable, and cost-efficient. What you'll be doing: - Productionising a voice AI system from an existing PoC - Working with voice platforms such as ElevenLabs/Deepgram (or similar) - Improving Real Time performance and reducing latency - Designing lightweight orchestration (simple, deterministic flows over complex prompt chains) - Integrating customer/internal data using RAG approaches - Optimising cost, reliability, and system efficiency - Building and maintaining API/SDK-based voice pipelines - Supporting secure handling of sensitive/PII data What we're looking for: - Strong experience building voice AI or Real Time speech systems - Hands-on experience with...
Outside Spy
Jun 17, 2026
Duration not stated
Senior Infrastructure Engineer - SC - MOD/Defence at The Talent Locker, Farnborough, £550-£600 per day
£550 - £600 per day
Outside Spy Farnborough, UK
Senior Infrastructure Engineer - MOD/Defence/SC Cleared Outside IR35 - £550-600 per day - Long projects Farnborough - onsite Contract role for a senior level infrastructure engineer, who is a self-starter, can lead projects and adaptable to different technologies within a secure/defence environment. You will need to have active Security Clearance (SC) and be on site in Farnborough 5 days per week. You will need to have demonstrable experience and deep knowledge of the following: Windows Server/Domain Services - strong understanding of AD, GPOs, domain architecture. VMware - hands-on experience with VCF, NSX, vCenter, SAN integration, and ESXi . Hyper-V - practical exposure to virtualisation management and configuration. PKI/Encryption - understanding of certificate services, key management, and secure communication. Networking - switch configuration, VLANs (including SAN-related VLANs), routing fundamentals. Linux - operational capability across common...
Outside Spy
Jun 17, 2026
Duration not stated
Senior Voice AI Engineer at Oscar Technology, London, £350-£500 per day
£350 - £500 per day
Outside Spy London, UK
Senior Voice AI Engineer - Contract (Outside IR35) | £350-500/day | 3-4 months | Remote We 're looking for a hands-on engineer to take an existing voice AI proof-of-concept and turn it into a reliable, production-grade system ready for real users. The prototype works - but it now needs to be made fast, stable, scalable, and cost-efficient. What you 'll be doing: - Productionising a voice AI system from an existing PoC - Working with voice platforms such as ElevenLabs / Deepgram (or similar) - Improving real-time performance and reducing latency - Designing lightweight orchestration (simple, deterministic flows over complex prompt chains) - Integrating customer/internal data using RAG approaches - Optimising cost, reliability, and system efficiency - Building and maintaining API/SDK-based voice pipelines - Supporting secure handling of sensitive/PII data What we 're looking for: - Strong experience building voice AI or real-time speech systems - Hands-on...
Outside Spy
Jun 12, 2026
6 Months or more
Lead Full Stack Engineer - Open Banking - Remote - OUTSIDE IR35 at LA International Computer Consultants Ltd, England, 6 Months, £550-£650 per day
£550 - £650 per day
Outside Spy Remote (England, UK)
Lead Technology Full Stack Engineer - 100% Remote - OUTSIDE IR35 You will lead a team of engineers, working across both Front End and Back End technologies while collaborating with architecture, cloud, product, and data science teams. The position is ideal for a hands-on technical leader who enjoys building scalable products and mentoring high-performing engineering teams. Lead Technology Full Stack Engineer Responsibilities Own end-to-end technical design and delivery across React, TypeScript, Vite, and Golang platforms. Define API standards, service architecture, and application design patterns. Lead engineering design reviews, code reviews, and technical decision making. Establish development standards, testing frameworks, and quality controls. Design and maintain CI/CD pipelines, containerisation, and cloud deployment processes. Collaborate with architects and data science teams to integrate AI and machine learning capabilities. Work closely with product and UX teams to...
Outside Spy
Jun 11, 2026
Duration not stated
Senior JavaScript Engineer at Ventula Consulting, Greater London, £575 per day
£575 per day
Outside Spy Greater London, England, United Kingdom
Senior JavaScript Engineer contract - Outside IR35 - £575 per day Leading Ecommerce client is now recruiting a talented ‘Full Stack JavaScript Developer’ who is proficient in front and back-end development. (React/Node.js), with an emphasis on backend Node work initially. This role will be joining their platform team, designing, and building the foundations of which our clients innovative web and mobile applications run on. What will a day in the role entail? Working as an integral part of an agile team contributing towards the planning and development of systems/platforms. Collaborating with engineers, product owners and business analysts to define solutions, ways of working and share knowledge across the department. Reviewing code and providing support to members of your team. Working on client-facing applications in react / next.js Designing and building Node.js / GraphQL APIs. The ideal Senior JavaScript Engineer Senior level experience in modern...
Outside Spy
Jun 10, 2026
Duration not stated
AI Engineer - LLM & Agentic Systems at Intec Select, London Area, £500-£675 per day
£500 - £675 per day
Outside Spy London Area, United Kingdom
AI Engineer - LLM & Agentic Systems London - Hybrid. Circa £500 – £675 per day (and negotiable DOE) Contract (Outside IR35) Mid-level, Senior & Lead. Agentic AI / Machine Learning. Company: Our client is a globally established B2B information and professional services business, operating across multiple high-value industry sectors. They have established data science and machine learning engineering teams already delivering in production, and are now expanding their AI capability significantly across the global organisation. This is a role for people who ship. If you've built LLM-powered systems and agentic workflows that are live in production - not demos, not prototypes - and you want to do that at genuine scale, this is worth applying for. What you'll be working on as an AI Engineer - LLM & Agentic Systems: Designing and building AI agents and agentic workflows - combining LLMs, RAG, reasoning, memory and tool orchestration to...
Outside Spy
Jun 10, 2026
Duration not stated
Server Infrastructure Engineer at CBSbutler Holdings Limited trading as CBSbutler, Blandford Forum, £550 to £600 per Day
£550 - £600 per day
Outside Spy Blandford Forum DT11, UK
Server Infrastructure Engineer +9 months + +On site in Blandford +SC cleared role +Outside IR35 +£550 - £600 a day We are seeking a skilled and motivated Server Infrastructure Engineer to support the management, maintenance, and assurance of secure testbed environments that enable critical digital development, integration, and innovation activities within the Defence sector. Working as part of a specialist engineering team, you will be responsible for maintaining both on-premise and cloud-hosted infrastructure environments, ensuring secure, reliable, and continuous support for development activities, testing, exercises, and emerging AI capabilities. This is an exciting opportunity for an infrastructure professional with Defence CIS experience who enjoys working across server technologies, cloud platforms, virtualisation, networking, and cyber security. Key Responsibilities Manage and maintain on-premise server infrastructure, virtual environments, and deployable...
Outside Spy
Jun 10, 2026
Duration not stated
Fabric Data Engineer at Initialize, Remote, £500 - £535 per day Outside IR35
£500 - £535 per day
Outside Spy Remote
Full job description Azure/Microsoft Fabric Data Engineer - remote - outside IR35 - £500 - 535 (and a perm role - up to £80k) You will be an experienced Azure/Microsoft Fabric Data Engineer and will help design, build and maintain modern data platforms. The role will focus on Microsoft Fabric, Azure data services, Lakehouse architecture, data ingestion, transformation, modelling, governance and AI-ready analytics. Skills/Experience Strong experience with Microsoft Azure data services and modern cloud data engineering. Hands-on experience with Microsoft Fabric, including Lakehouse, Warehouse, Pipelines, Dataflows, Notebooks and Power BI. Good understanding of data lake, lakehouse and warehouse architecture. Experience building data ingestion and transformation pipelines from multiple source systems. Strong SQL skills and experience working with relational data models. Experience with Python and/or PySpark for data transformation and...
Outside Spy
Jun 10, 2026
6 Months or more
Server Infrastructure Engineer at CBS Butler, Blandford Forum, 9 Months, £550-£600 per day
£550 - £600 per day
Outside Spy Blandford Forum, UK
Server Infrastructure Engineer +9 months + +On site in Blandford +SC cleared role +Outside IR35 +£550 - £600 a day We are seeking a skilled and motivated Server Infrastructure Engineer to support the management, maintenance, and assurance of secure testbed environments that enable critical digital development, integration, and innovation activities within the Defence sector. Working as part of a specialist engineering team, you will be responsible for maintaining both on-premise and cloud-hosted infrastructure environments, ensuring secure, reliable, and continuous support for development activities, testing, exercises, and emerging AI capabilities. This is an exciting opportunity for an infrastructure professional with Defence CIS experience who enjoys working across server technologies, cloud platforms, virtualisation, networking, and cyber security. Key Responsibilities Manage and maintain on-premise server infrastructure, virtual environments, and...
Outside Spy
Jun 10, 2026
6 Months or more
Dynamics Field Services Engineer - Contract - Outside IR35 at Anson McCade Ltd, Remote, 6 Months, £500-£600 per day
£500 - £600 per day
Outside Spy Remote (Remote , UK)
We are seeking an experienced Microsoft Dynamics 365 Field Service Engineer to join a major digital transformation programme. The successful contractor will play a key role in the design, configuration, integration, and deployment of Dynamics 365 Field Service solutions, working closely with business stakeholders, solution architects, and technical teams. Required Skills & Experience: Proven experience delivering Microsoft Dynamics 365 Field Service implementations. Strong knowledge of: Dynamics 365 Field Service Microsoft Dataverse Power Platform (Power Apps, Power Automate) Resource Scheduling Optimisation (RSO) Dynamics 365 Mobile App Experience integrating Dynamics 365 with enterprise applications and services. Strong understanding of solution architecture and best practice design principles. Experience working within Agile project environments. Excellent stakeholder management and communication skills. Offer: 6 months Outside...
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