16 integration engineer jobs found in London

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:...

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...

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...

🚀 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...

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...

?? 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...

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...

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...

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 solve real,...

Kotlin Developer (SC Cleared) Outside IR35 We are seeking experienced Kotlin Developers to join a high-profile national digital programme, building secure, scalable, and user-focused Android applications that support a major government digital transformation initiative. This is an opportunity to work on modern mobile products with significant public impact, leveraging the latest Android technologies and best practices. You'll collaborate closely with product managers, designers, delivery specialists, and fellow engineers to create high-quality, reliable, and secure mobile experiences used at scale. Due to the nature of the programme, active SC clearance is required . Key Responsibilities Design, develop, and maintain modern Android applications using Kotlin as the primary language. Build responsive and scalable user interfaces using Jetpack Compose . Architect robust, maintainable, and testable solutions following Android best practices and modern design...

AI Voice Engineer (Contract) Fully Remote £300- £560 Per Day Outside IR35 Immediate Start 3 Months Initially The Company They are a well-established organisation operating within a regulated environment, focused on delivering better outcomes for their customers through technology. As part of a wider AI transformation programme, they have already seen strong success with voice AI solutions internationally and are now expanding these capabilities into the UK. The business is investing heavily in AI, with clear backing from senior leadership and a strong appetite for innovation. You will join a collaborative data and AI function with a focus on practical, scalable solutions. The Role and Deliverables Design, build and optimise AI-powered voice agents for real-world customer interactions Develop and integrate voice pipelines using leading speech and conversational AI technologies Build robust Python-based services to support...

Principal Designer (UI Design & Digital Product Design) £600 - £650 per day (Outside IR35) London (Hybrid) x2 days onsite Overview We are looking for an exceptional Principal Product Designer to join an exciting organisation building a large-scale digital platform from the ground up. This is a rare opportunity for a highly skilled designer to define the visual identity, interaction patterns, and design standards of a greenfield product ecosystem. Working closely with engineering, product, and leadership teams, you will lead the creation of polished, high-quality interfaces and establish the foundations of a scalable design system. The ideal candidate will have exceptional UI and interaction design skills, a strong portfolio of shipped digital products, and a passion for creating elegant, intuitive user experiences at scale. Role & Responsibilities Own and evolve the visual design language and interaction patterns across a suite of digital...

Backend Engineer - Java/Spring Boot £450 - £500 Outside IR35/6 Month Contract London - Hybrid - 1/2 Days Onsite Our client are looking for a Backend Engineer to join a team building scalable, customer-facing digital products. The role focuses on developing Java/Spring Boot services within a GCP environment, building data pipelines, and integrating with a customer engagement platform used in retail environments. You'll need to show where you've worked on highly available, high-traffic systems, collaborating closely with Front End engineers who are integrating booking and appointment functionality. Key Requirements: Strong commercial experience with Java and Spring Boot Experience integrating Back End services with third-party platforms and APIs Demonstrable experience working on high-availability, high-traffic applications

🚀 AI Engineer | Contract | Up to £600/day Outside IR35 I'm working with a high-growth technology company that's putting AI at the centre of how the business operates. They're looking for an AI Engineer to build intelligent systems, AI agents, integrations and automated workflows that will be used by teams across the entire organisation from day one. You'll be working with the latest LLMs, agentic AI, workflow orchestration and modern AI infrastructure, with the freedom to take ideas from concept to production in a fast-moving, highly autonomous environment. Python and TypeScript required. 📍 Shoreditch (2-3 days per week) 💰 Up to £600/day 📝 Outside IR35

This role is delivered within secure environments. Candidates must be eligible for UK SC clearance and hold UK citizenship. Join the Mission At ByDesign Secure, we believe that world‑class security shouldn't be an afterthought— it should be the foundation. We are an independent, outputs‑based consultancy dedicated to solving the most complex data assurance challenges in the UK public sector. Currently, we are working on a landmark transformation of a cross‑government secure IT system. This is an exciting opportunity to contribute to the design and consumption of a private cloud environment from the ground up and help modernise the end‑user services that support national decision‑making. We don’t believe in “billing by the hour” or rigid hierarchies; we are a lean, expert team focused on delivering high‑impact outcomes. If you are a self‑starter who thrives on autonomy and wants to see your analysis, insights, and business decisions shape the future of sovereign security, we...

This role is delivered within secure environments. Candidates must be eligible for UK SC clearance and hold UK citizenship. Join the Mission At ByDesign Secure, we believe that world‑class security shouldn't be an afterthought— it should be the foundation. We are an independent, outputs‑based consultancy dedicated to solving the most complex data assurance challenges in the UK public sector. Currently, we are working on a landmark transformation of a cross‑government secure IT system. This is an exciting opportunity to contribute to the design and consumption of a private cloud environment from the ground up and help modernise the end‑user services that support national decision‑making. We don’t believe in “billing by the hour” or rigid hierarchies; we are a lean, expert team focused on delivering high‑impact outcomes. If you are a self‑starter who thrives on autonomy and wants to see your analysis, insights, and business decisions shape the future of sovereign security, we...