59 senior software engineer jobs found

Senior Software Engineer - 3-month contract: Manchester/Hybrid Interviewing now for a Software Engineer for a 3-month project (outside IR35.) You will play an integral part of an agile team to enhance, build, and deliver products in a secure, stable, and scalable way. You will have previous experience in Java, Spring Boot, microservices architecture utilising DevOps practices. We operate a highly agile development approach, giving wide scope to be involved with hands-on system-design, test driven development, deployment, and operations. Type: 3 Month Contract Day Rate: Market Rates (Outside IR35) Location: Hybrid/Manchester Start: ASAP Skills Proficient with Java, Spring Boot, Microservices Architecture, whilst automating CI/CD pipelines for build, test and deployment. Cloud experience, implementing docker-based CI/CD pipelines, utilising Kubernetes. Please apply now to be considered Desired Skills and Experience Senior Software Engineer - 3-month contract:...

Senior Software Engineer - 3-month contract: Manchester/Hybrid Interviewing now for a Software Engineer for a 3-month project (outside IR35.) You will play an integral part of an agile team to enhance, build, and deliver products in a secure, stable, and scalable way. You will have previous experience in Java, Spring Boot, microservices architecture utilising DevOps practices. We operate a highly agile development approach, giving wide scope to be involved with hands-on system-design, test driven development, deployment, and operations. Type: 3 Month Contract Day Rate: Market Rates (Outside IR35) Location: Hybrid/Manchester Start: ASAP Skills Proficient with Java, Spring Boot, Microservices Architecture, whilst automating CI/CD pipelines for build, test and deployment. Cloud experience, implementing docker-based CI/CD pipelines, utilising Kubernetes. Please apply now to be considered

Senior Software Engineer - 3-month contract: Manchester/Hybrid Interviewing now for a Software Engineer for a 3-month project (outside IR35.) You will play an integral part of an agile team to enhance, build, and deliver products in a secure, stable, and scalable way. You will have previous experience in Java, Spring Boot, microservices architecture utilising DevOps practices. We operate a highly agile development approach, giving wide scope to be involved with hands-on system-design, test driven development, deployment, and operations. Type: 3 Month Contract Day Rate: Market Rates (Outside IR35) Location: Hybrid/Manchester Start: ASAP Skills Proficient with Java, Spring Boot, Microservices Architecture, whilst automating CI/CD pipelines for build, test and deployment. Cloud experience, implementing docker-based CI/CD pipelines, utilising Kubernetes. Please apply now to be considered

Senior Software Engineer - 3-month contract: Manchester/Hybrid Interviewing now for a Software Engineer for a 3-month project (outside IR35.) You will play an integral part of an agile team to enhance, build, and deliver products in a secure, stable, and scalable way. You will have previous experience in Java, Spring Boot, microservices architecture utilising DevOps practices. We operate a highly agile development approach, giving wide scope to be involved with hands-on system-design, test driven development, deployment, and operations. Type: 3 Month Contract Day Rate: Market Rates (Outside IR35) Location: Hybrid/Manchester Start: ASAP Skills Proficient with Java, Spring Boot, Microservices Architecture, whilst automating CI/CD pipelines for build, test and deployment. Cloud experience, implementing docker-based CI/CD pipelines, utilising Kubernetes. Please apply now to be considered

Software Engineer - Node & Typescript 12 month contract, Outside IR35 Remote £500 - £540 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...

Location: London (once a month) Department: Engineering Employment Type: Contract - Outside IR35 Contract Length: 6 months (with potential for extension)   About YLD: Our goal is to help our clients keep moving forward. We work with them to build the skills and capabilities they need to stay ahead of the competition, and we know our success only happens when they succeed. We’re a team of curious, talented people, and we’re committed to making YLD a place where great people want to work, grow, and stay. We’re a remote-first consultancy specialising in software engineering, product design, and data. Our teams are based across London, Lisbon, and Porto, and we create digital solutions that continue to deliver value long after our work is done.   About the role: As a Senior Software Engineer at YLD, you’ll be part of a client team building innovative products. We’re looking for someone curious,...

iO Associates are working with a UK-based company building mission-critical AI systems. They're looking for a Senior AI Engineer to join on a contract basis and build agentic AI systems in production, including secure deployments. Job Title: Senior AI Engineer Location: UK (Hybrid - occasional on-site in the South of England) Contract Length: Initial 6 months IR35: Outside IR35 Rate: Dependent on experience Start: Immediate Key Responsibilities Build agent-based AI systems end-to-end. Cover orchestration, state, and tool calling. Engineer for production. Focus on tests, reliability, latency, and failure handling. Use LLMs and vision-capable models in real workflows. Include retrieval, reasoning, summarisation, and task execution. Deploy across cloud and restricted environments. This includes on-prem and occasional offline use. Set up evaluation and monitoring. Leave clear documentation for handover. Experience & Skills Required Senior software...

Senior Applied AI Engineer – Private Sector Location: Harwell, Oxfordshire – Hybrid (2 days per week on site, remainder remote) Contract: 6 months initially, with strong potential for extension Day Rate: £700–£900 per day, depending on experience IR35: Outside IR35 Start Date: Immediate About the Role We are working with a fast-growing UK frontier technology company developing advanced AI systems for organisations operating in complex, high-stakes environments. The business is looking for a Senior Applied AI Engineer to take genuine technical ownership of the design and delivery of production-grade agentic AI systems. This is a builder's role rather than an integration role . You will design and implement sophisticated AI systems from the ground up, make architecture-level decisions, write production-quality software and own features through to deployment. The focus is on turning rapidly evolving AI capabilities into reliable, scalable systems that deliver...

iO Associates are working with a UK-based company building mission-critical AI systems. They’re looking for a Senior AI Engineer to join on a contract basis and build agentic AI systems in production, including secure deployments. Job Title: Senior AI Engineer Location: UK (Hybrid – occasional on-site in the South of England) Contract Length: Initial 6 months IR35: Outside IR35 Rate: Dependent on experience Start: Immediate Key Responsibilities Build agent-based AI systems end-to-end. Cover orchestration, state, and tool calling. Engineer for production. Focus on tests, reliability, latency, and failure handling. Use LLMs and vision-capable models in real workflows. Include retrieval, reasoning, summarisation, and task execution. Deploy across cloud and restricted environments. This includes on-prem and occasional offline use. Set up evaluation and monitoring. Leave clear documentation for handover. Experience & Skills Required Senior software...

C# / .NET / SQL   Remote + adhoc onsite in South West office Outside IR35 Start ASAP C# | .NET | SQL Server | PowerShell | Azure Data Factory   We’re looking for a strong Senior or Lead Software Engineer to join a small, experienced development team responsible for a range of business-critical applications and systems. This is a hands-on engineering role combining application development with complex data and problem-solving. You’ll be working across C#/.NET applications, SQL Server databases and system integrations, getting underneath issues to understand not just the code, but the data and business processes behind it.   The Role: Develop and maintain applications using C#, .NET and SQL Server Investigate and troubleshoot issues across both application and database layers Work with complex relational and transactional data Understand how data flows between different systems and identify...

Interim Software Engineering Manager 3-month contract | c. £500 per day | Outside IR35 | Hybrid, Oxfordshire Are you a senior software leader who can quickly understand complex systems? Do you enjoy combining architecture, hands-on engineering and technology strategy? Would you like the opportunity to shape the next phase of a growing software capability? Our client, an innovative technology-led engineering organisation, is seeking an Interim Software Engineering Manager for an initial six-month contract. This is a high-impact assignment for someone who can provide technical direction, strengthen engineering practices and help turn long-term business goals into a practical software roadmap. Why This Role Is Great: You will have the opportunity to: Take ownership of the technical direction and evolution of a complex software platform. Work closely with senior leaders to align software architecture, delivery priorities and wider business...

Senior Javascript Engineers (Contract) | UK based (Hybrid - Manchester) | £550–£600 per day (Outside IR35)   We're supporting a fast-growing digital business that's investing heavily in its engineering capability and is looking for an experienced Senior Node.js Engineer to join a high-performing product team.   This isn't a role for someone who only knows one language. They're looking for polyglot engineers who understand software engineering fundamentals and are comfortable working across different technologies to solve complex problems.   You'll be:   Building and evolving high-scale backend services with Node.js & TypeScript Designing clean, scalable and maintainable solutions Working closely with Product, Engineering and Platform teams Contributing to architecture and technical decision-making Writing high-quality, well-tested code Mentoring engineers and driving engineering best practice...

Senior Javascript Engineers (Contract) | UK based (Hybrid - London) | £550–£600 per day (Outside IR35)   We're supporting a fast-growing digital business that's investing heavily in its engineering capability and is looking for an experienced Senior Node.js Engineer to join a high-performing product team.   This isn't a role for someone who only knows one language. They're looking for polyglot engineers who understand software engineering fundamentals and are comfortable working across different technologies to solve complex problems.   You'll be:   Building and evolving high-scale backend services with Node.js & TypeScript Designing clean, scalable and maintainable solutions Working closely with Product, Engineering and Platform teams Contributing to architecture and technical decision-making Writing high-quality, well-tested code Mentoring engineers and driving engineering best practice...

Senior Javascript Engineers (Contract) | UK based (Hybrid - Leeds) | £550–£600 per day (Outside IR35)   We're supporting a fast-growing digital business that's investing heavily in its engineering capability and is looking for an experienced Senior Node.js Engineer to join a high-performing product team.   This isn't a role for someone who only knows one language. They're looking for polyglot engineers who understand software engineering fundamentals and are comfortable working across different technologies to solve complex problems.   You'll be:   Building and evolving high-scale backend services with Node.js & TypeScript Designing clean, scalable and maintainable solutions Working closely with Product, Engineering and Platform teams Contributing to architecture and technical decision-making Writing high-quality, well-tested code Mentoring engineers and driving engineering best practice...

Senior Android Engineer (Contractor) Location: Manchester city centre, 2 days/week onsite + remote 3 days/week Contract: Initial 3-4 month contract (strong likelihood of extension) Rate: £400-500 (Outside IR35) Start Date: Early October Overview Are you looking to make a genuine, visible impact in a short window rather than settle into a long slow ramp-up? This role offers exactly that. We're looking for an experienced Senior Android Engineer to join the Digital Engineering team of a well-known UK consumer brand, on a hands-on delivery contract supporting a significant new customer-facing proposition. The Android app is a modern, Kotlin-first, Jetpack Compose-only application built on multi-module clean architecture, with an established in-house permanent engineering team already in place. This is a genuine delivery role for someone who can get up to speed fast, ship high-quality software without unnecessary ceremony, and leave the codebase in a better state than they found...

Senior Platform Engineer – Common Platform 6-Month Initial Contract Outside IR35 London I’m currently recruiting for a Senior Platform Engineer to join the Core Platform team of a leading UK media and entertainment organisation. The team is responsible for developing and evolving an internal Common Platform, providing the tooling, infrastructure and engineering patterns that enable software development teams across the organisation. This is a hands-on Platform Engineering role combining AWS, Kubernetes/EKS, Terraform, automation, CI/CD and internal developer tooling. You’ll work as part of the Core Platform team, designing, developing and supporting the platform capabilities used by engineering teams across the organisation. Responsibilities include: Designing and developing reusable Infrastructure as Code modules using Terraform Building and operating production AWS EKS/Kubernetes environments Developing internal platform tools, frameworks and automation Using Python, Go...

We’re looking for an EPOS & SCO Platform Engineer to build, configure, and support the in-store point of sale and self-checkout platforms across the estate. You’ll own the full lifecycle of Travel Money Kiosks, EPOS and Hospitality infrastructure, including till hardware, self-checkout units, peripherals, and backend systems—ensuring services are secure, compliant, resilient, and consistently deployed at scale. You’ll automate provisioning, configuration, updates, and monitoring so stores benefit from reliable transaction processing, seamless customer journeys, and minimal downtime. Success means stable retail operations, predictable performance, and confidence from store colleagues, product owners, and operations teams. This is a hybrid role where 3 days per week are expected on site in Bracknell. Requirements Role Responsibilities: Design, build, and maintain EPOS and SCO infrastructure (Tills, Self-Checkouts, peripherals, controllers) across Windows...

Senior Platform Engineer - Common Platform 6-Month Initial Contract | Outside IR35 | London I'm currently recruiting for a Senior Platform Engineer to join the Core Platform team of a leading UK media and entertainment organisation. The team is responsible for developing and evolving an internal Common Platform, providing the tooling, infrastructure and engineering patterns that enable software development teams across the organisation. This is a hands-on Platform Engineering role combining AWS, Kubernetes/EKS, Terraform, automation, CI/CD and internal developer tooling. You'll work as part of the Core Platform team, designing, developing and supporting the platform capabilities used by engineering teams across the organisation. Responsibilities include: Designing and developing reusable Infrastructure as Code modules using Terraform Building and operating production AWS EKS/Kubernetes environments Developing internal platform tools, frameworks and automation Using Python,...

Lead Software Engineer - C#/.NET/SQL Remote + adhoc onsite in South West Outside IR35 Start ASAP C# | .NET | SQL Server | PowerShell | Azure Data Factory We're looking for a strong Senior or Lead Software Engineer to join a small, experienced development team responsible for a range of business-critical applications and systems. This is a hands-on engineering role combining application development with complex data and problem-solving. You'll be working across C#/.NET applications, SQL Server databases and system integrations, getting underneath issues to understand not just the code, but the data and business processes behind it. The Role Develop and maintain applications using C#, .NET and SQL Server Investigate and troubleshoot issues across both application and database layers Work with complex relational and transactional data Understand how data flows between different systems and identify underlying issues Work directly with internal stakeholders to...

We are looking for a Senior AI Engineer-Machine Learning- Computer Vision for one of our clients based in London. Location - London, UK, REMOTE role and Outside of IR35 You'll be helping in building and scaling AI-driven solutions that deliver images and videos to millions of customers. This role focuses on designing reliable, responsible and high-performing AI systems, using deep learning embedding techniques for multimodal signal processing, and generative AI technologies such as large language models (LLMs). You'll work closely with Studios, Machine Learning Engineers and Product teams to shape the next generation of AI-powered automation. By applying Computer Vision to product imagery and external visual inspiration, you'll uncover rich styling signals and combine them with customer insights to create smarter image generation, more engaging shopping journeys and more personalised fashion experiences. Key Responsibilities Design and develop AI solutions...