15 senior software engineer jobs found

Software Engineer - Node & Typescript 12 month contract, Outside IR35 Remote £530 - £570 per day We're working with a FinTech company who are looking for 6 capable, self-driven Senior Software Engineer to help build and evolve their products Their technology already powers some of the UK's most ambitious fintechs, banks, financial advisers and wealth firms, with close to a million investors relying on their platforms. In this role you will design, build and operate reliable and scalable, testable and maintainable software solutions, building new functionalities and products using Typescript and Node.js. As this is a senior level role you will be expected operate confidently with clients and senior stakeholders What we're looking for Strong commercial experience with Node.js, specifically TypeScript Experience with Amazon Web Services Experience with Serverless products Experience with document databases, ideally MongoDB Experience mentoring engineers...

This role is remote within the UK, and we're looking for engineers available quickly to join us for 6 months under O/IR35 requirements. About Us Seccl is the Octopus-owned embedded investment platform, on a mission to help more people invest, and invest well. We’re building the infrastructure behind the next generation of investing. Our technology already powers some of the UK’s most ambitious fintechs, banks, financial advisers and wealth firms, with close to a million investors relying on Seccl-powered platforms. And we’re now expanding into Europe. We’ve got a proven product, strong momentum and big ambitions for what comes next: helping more household-name brands launch and scale investment propositions, entering new markets and replacing outdated investment infrastructure with technology that’s faster, simpler and built for scale. We’re proud to be part of Octopus, one of the UK’s most successful privately held investment and technology groups. That gives us the...

Principal Full Stack Engineer - Azure AI Search & Elasticsearch 6-month contract Outside IR35 London - 2 days onsite We are looking for a Principal Full Stack Engineer to lead the design and delivery of enterprise search and AI-driven applications. This is a senior, hands-on contract combining search architecture, full-stack development, Microsoft Azure, DevOps and Generative AI. Key responsibilities Design and optimise enterprise search solutions using Elasticsearch and Azure AI Search. Define Elasticsearch cluster architecture, index mappings, aggregation queries and life cycle strategies. Improve search relevance, indexing performance, query latency and platform resilience. Build Azure AI Search solutions using indexers, custom skillsets, vector search and semantic ranking. Develop responsive, search-focused applications using JavaScript/TypeScript and React, Angular or Vue. Design and integrate APIs and Back End services across the Azure ecosystem. Build...

Senior Java Developer | Outside IR35 | Remote We are looking for an experienced Java Developer to support the development of modern, user-focused digital services on a large-scale public sector programme. You will work as part of a multidisciplinary engineering team, building and improving secure, resilient cloud-native applications. The Role This is a hands-on engineering role with a core focus on Java Back End development, while contributing across the wider delivery life cycle. You will develop services, APIs and integrations, work with TypeScript-based Front End applications, and help improve the cloud infrastructure and delivery pipelines that support the platform. Key Responsibilities Build, enhance and maintain Back End services and APIs using Java and Spring Boot. Contribute to TypeScript Front End development, delivering accessible and maintainable user journeys. Design and develop solutions using PostgreSQL, with a focus on reliable data handling and performance....

Senior C# / Azure Engineer Contract | £650- £700 per day | Outside IR35 Method Resourcing are partnering with a leading Data & AI consultancy on an exciting programme within Wealth Management, building AI agents to transform and automate the customer onboarding journey. The initial design phase has been completed and the programme is now moving into build. We are looking for up to two experienced C# / .NET Engineers to help establish the technical foundations and support the wider engineering team through delivery. We are looking for strong software engineers who understand C#, Azure and event-driven architectures, with exposure to modern AI/agent-based applications. The role You will work within an existing C# and Azure environment, helping the team understand and extend the client 's current architecture while establishing robust engineering patterns for the build. You will : Review and understand an...

Network Security Engineer Initial 6-month Contract Remote working £400 - £475, Outside IR35 We're looking for an experienced Network Security Engineer to support security transformation and technology projects within a large enterprise environment. The role will focus on implementing and enhancing network security solutions, supporting secure cloud and container environments, and working closely with technical teams and stakeholders to ensure security requirements are met across business-critical platforms. Key Responsibilities: Implement and support network security technologies and controls Support container and cloud security initiatives Work across the Software Development Lifecycle and DevSecOps environments Manage and enhance identity and access management solutions Work closely with technical teams, architects and senior stakeholders Assess security risks and support remediation activities Support technology transformation and modernisation projects Requirements:...

Senior Product Engineer - Python/React | £650/day Outside IR35 Up to £650/day | Outside IR35 | 6 months | Shoreditch, London I'm working with an exciting early-stage HealthTech business that is building a highly ambitious consumer healthcare product from the ground up. They have an exceptionally experienced founding team with a strong track record of building, scaling and exiting successful technology businesses , and are now growing the engineering team at a key stage of the company's journey. They're looking for an experienced Product Engineer who wants genuine ownership - working closely with the founders and engineering team to take problems from initial idea through to production and customer feedback. This isn't a ticket-driven engineering role. They need someone who enjoys building, shipping and making product decisions . Key experience: Excellent Python engineering skills Async systems/data processing React and comfortable working across the full stack...

Agentic Forward Deployed Engineer Rate: £600 per day - Outside IR35 Contract: 6-12 months Working Pattern: Hybrid - 3 days per week on-site Industry: Public Sector - International Education We are recruiting a Principal-level Agentic Forward Deployed Engineer to support a major AI-enabled digital transformation programme within a large international organisation. The organisation is adopting an agentic-first approach to software engineering and wants to move from individual experimentation towards a scalable, secure and maintainable enterprise model for AI-assisted development. Experienced engineering teams are already exploring agentic development. This role will establish what good looks like across the wider organisation, introducing the engineering standards, governance, security controls, evaluation frameworks, operating models and knowledge-sharing practices required to deploy agentic AI at scale. This is not a purely strategic or governance-focused role....

Agentic Forward Deployed Engineer Rate: £600 per day - Outside IR35 Contract: 6-12 months Working Pattern: Hybrid - 3 days per week on-site Industry: Public Sector - International Education We are recruiting a Principal-level Agentic Forward Deployed Engineer to support a major AI-enabled digital transformation programme within a large international organisation. The organisation is adopting an agentic-first approach to software engineering and wants to move from individual experimentation towards a scalable, secure and maintainable enterprise model for AI-assisted development. Experienced engineering teams are already exploring agentic development. This role will establish what good looks like across the wider organisation, introducing the engineering standards, governance, security controls, evaluation frameworks, operating models and knowledge-sharing practices required to deploy agentic AI at scale. This is not a purely strategic or...

Forward Deployed AI Engineer Day rate: £700- £1,200 Outside IR35 Contract: Initial 12 months Commitment: Approximately three days per week Location: Two days per week onsite in London Harnham is working with a leading private equity firm looking for a Forward Deployed AI Engineer to support businesses across its portfolio. The portfolio is primarily made up of SMEs and scale-ups generating approximately £5m- £50m in annual revenue. These businesses operate across different sectors and have varying levels of technical maturity. The role combines senior-level consulting with hands-on AI engineering. You will work directly with CEOs, boards and leadership teams to understand how their businesses operate, identify where AI can create genuine commercial value and then personally build and deploy the solutions. The role You will work across multiple portfolio companies, taking projects from initial discovery through to production delivery and...

Integration Software Engineer/(IPaaS - Boomi - AWS) - UK CNI - OUTSIDE IR35 - ACTIVE SC CLEARANCE NEEDED Tecknuovo is a deliberately different digital consultancy, delivering secure, modern technology solutions while upskilling client teams to ensure zero long-term dependency. We are seeking an experienced Integration Engineer, Software Engineer, Backend Engineer or Java Developer to support a high-profile integration Proof of Concept within a large-scale UK government organisation responsible for delivering critical national services. This role would suit engineers with a strong background in API development, Back End engineering, system integration or Middleware technologies , who enjoy solving complex technical challenges and building scalable solutions in cloud-based environments. You do not need to come from a pure Boomi background. Whilst experience with Boomi is highly desirable, we are equally interested in engineers who have delivered...

Data Analyst (AI-Enabled Data Insights) Company: Major UK broadcaster and media group, Group Technology function Team: Data Insights Travel: 2 days per week on site Contract: Outside IR35 The company is running a large readiness programme to prepare its IT service management, asset/configuration, software-licensing and cloud-financial (FinOps) tooling for an organisational separation. By a defined "Day 1", data, access and reporting must be correctly segregated between parts of the business, with controls in place and evidence that the separation works. The Data Insights workstream owns the data and reporting side, and AI and automation are used across the pipeline from data prep to visualisation. Bring AI capability into a small data team. This is a deliberate role for someone who has already built AI-driven data pipelines and visualisations and can teach the rest of the team to do the same. The work is turning data from many sources into clear dashboards and reports...

Robotics Software Engineer – Outside IR35 Contract Location: London – Hybrid / Remote Duration: 3 months Day Rate: Competitive Sector: Robotics & Automation Opportunity Overview An innovative robotics and automation business is looking for a Robotics Software Engineer to join its engineering team on an initial 3-month contract. You’ll work across a modern ROS 2 Jazzy robotics software stack, developing and deploying software that controls industrial robotic systems used in real-world manufacturing environments. This is an opportunity for a strong software engineer with practical robotics exposure to work alongside robotics developers, controls engineers and product engineers, with your work being deployed directly onto physical robotic systems. The ideal candidate will be available immediately and able to hit the ground running within an existing codebase. On-site working in East London is preferred, although hybrid and remote applications will also be considered. Key...

QA Engineer Location: London; Hybrid (Minimum 2 days per week in the office) Job Type: Contract Outside IR35 About the Opportunity We are seeking an experienced QA Engineer to join a growing technology function responsible for ensuring business-critical applications and platforms are delivered and maintained to the highest standards of quality. This role will take ownership of testing strategy, quality assurance governance, supplier testing oversight, and user acceptance testing activities across a range of enterprise applications. You will work closely with internal stakeholders, delivery teams, and third-party suppliers to ensure solutions are robust, secure, and fit for purpose before they are released into production. This is an excellent opportunity for a QA professional who enjoys combining hands-on testing expertise with governance, stakeholder management, and quality leadership. Key Responsibilities Develop, maintain, and execute comprehensive test strategies and...

Our client are a leading technology organisation working across financial services and energy trading is looking for experienced Senior Java Engineers to join its engineering teams. This is a hands-on software engineering opportunity, working on complex, bespoke solutions for financial markets clients. You’ll be involved across both greenfield and brownfield development, working closely with experienced engineering teams to solve challenging technical and business problems. The role sits within a Settlements / Post-Trade environment, with additional exposure to digital assets and blockchain technology. Outside R35 contract which is extendable to 12 months! Up to £700 Day rate as well! • Develop and enhance server-side Java/JVM applications, with Java as the primary back-end technology. • Build robust services using Spring and Spring Boot. • Work across greenfield and brownfield projects within financial services, trading and post-trade environments. •...