91 senior software engineer jobs found

Full job description Joining a new project Ideally have worked on Financial Services Projects before (Payments would be great) Fullstack Experience Tech Stack - Kotlin Backend, JS/TS React Frontend Start date ASAP Duration 6 months (Likely to extend) 2/3 days / week in person working (London) Immediate Interviews   The best bit about Red Badger is, of course, the team. We are really proud of our people; we support and learn a lot from each other; we work really hard but have fun doing it. We are a diverse group made up of 22 different nationalities, speaking 17 different languages.   Our 3 founders, Dave, Cain and Stu, who have considerable tech and consultancy experience and still own 100% of the company. We've been consistently profitable and have grown responsibly from the beginning.   We are based at Old Street in the heart of "tech city" and get thoroughly stuck in with the...

Senior Software Engineer — Agentic Coding (AI Training) About The Role What if your software engineering expertise could define how the next generation of AI writes, debugs, and ships code on its own? We're looking for Senior Software Engineers in London to work at the frontier of agentic AI — building, evaluating, and improving autonomous coding systems that can reason through complex problems, execute multi-step plans, and produce production-quality software with minimal human intervention. This is where deep engineering skill meets the most transformative technology of our time. You'll work on real problems that push the boundaries of what AI agents can do — and your code, judgment, and architectural thinking will directly shape how these systems evolve. This is a fully remote, flexible contract role. If you're a senior engineer who's excited about agentic AI and wants to work on problems that genuinely matter, we want to hear from you....

Full job description Joining a new project Ideally have worked on Financial Services Projects before (Payments would be great) Fullstack Experience Tech Stack - Kotlin Backend, JS/TS React Frontend Start date ASAP Duration 6 months (Likely to extend) 2/3 days / week in person working (London) Immediate Interviews   The best bit about Red Badger is, of course, the team. We are really proud of our people; we support and learn a lot from each other; we work really hard but have fun doing it. We are a diverse group made up of 22 different nationalities, speaking 17 different languages.   Our 3 founders, Dave, Cain and Stu, who have considerable tech and consultancy experience and still own 100% of the company. We've been consistently profitable and have grown responsibly from the beginning.   We are based at Old Street in the heart of "tech city" and get thoroughly stuck in with the...

We don't just believe in better. We make it happen. ? Better content. Better products. And better careers.? Working in Tech, Product or Data at Sky is about building the next and the new. From broadband to broadcast, streaming to mobile, Sky Stream to Sky Glass, we never stand still. We optimise and innovate. We turn big ideas into the products, content and services millions of people love. And we do it all right here at Sky.? Sky is looking for a talented and dedicated Senior Software Engineer in RDK Triage Engineering team to support the release cycles associated with deployed software on CPE devices. These devices use Reference Design Kit (RDK), which is deployed on over 100+ million devices spanning video, broadband and home security. The Release Triage Software Engineer function is critical to the successful development and deployment of new features and fixes as the function ensures that these changes get deployed to the field. Sky's development environment is...

We are seeking a Backend Java Software Engineer to join our team on a contractual basis. This role heavily focuses on Java, Backend, iGaming Operator Integrations.   This is 1 year extendable contract and applicants must operate through a fully registered limited company to be considered for this role. The role is fully remote, with occasional travel required to our headquarters in Málaga, Spain   What You’ll Do Design, develop and maintain scalable, resilient backend services using Java (17+) and Spring Boot, with a strong focus on quality and a zero-defect mindset. Build and evolve integrations between our iGaming platform and operators, aggregators and other external partners. Design and implement robust REST APIs, asynchronous integrations and event-driven services supporting high-volume, real-time gaming transactions. Develop and maintain common platform capabilities supporting operator integration, including areas such as...

Location: London 1-2 days a week. Department: Engineering Employment Type: Contract 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, passionate, driven, and...

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,...

Full job description Location: London 1-2 days a week. Department: Engineering Employment Type: Contract 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,...

Codurance is a global software professional services consultancy, helping clients continuously deliver value through the adoption of quality practices and technical excellence. Software craftsmanship is at the heart of everything we do. We build well-crafted software and help development teams get better at continuously delivering software through the application of extreme programming practices and software craftsmanship values. In 2010, our founders started the London Software Craftsmanship Community (LSCC), now the largest and most active software craftsmanship community in the world, with more than 5,500 developers. Codurance was founded in 2013 and has carried that same community spirit ever since. This is an initial 6-month contract, inside IR35.   Day rate: £600 - £650 day (inside IR35) About the role Our client is a fast-growing, well-funded technology company operating a financially critical platform used by a global customer base,...

The Department for Work and Pensions (DWP) is responsible for welfare, pensions, and child maintenance policy. As the UK's biggest public service department, it administers the State Pension and a range of working age, disability and ill health benefits to around 20 million claimants and customers. As such, we operate on a scale that is almost unmatched anywhere in Europe and most people in Britain come into contact with us at some point in their lives.   Working with DWP, you will be helping us to drive our priorities to:   Help people to move into work and support those already in work to progress, with the aim of increasing overall workforce participation Help people to plan and save for later life, while providing a safety net for those who need it now Provide effective, efficient, and innovative services to the millions of claimants who rely on us every day, including the most vulnerable in society Improve experience of our services while...

Purpose of the Role We are looking to build a pipeline of potential software contractors with the following skill sets and experience. If you are open to software/controls contract work and your skillset and experience are a good match below, please feel free to send your CV and we may contact you in the near future.   As a Software Contractor you'll be working on the commissioning of our machines in a software capacity. Your expertise will be crucial in: Siemens TIA V19 including Safety Siemens WinCC Unified HMI Motion/Servo drives PackML Keyence Vision Staubli robot - essential Developing streamlined, efficient code Utilising advanced simulation tools to perfect software before real-world implementation. Ensuring our machines meet the highest safety standards by designing software compliant with the Machine Directive (BS EN 12100).   Outputs/Deliverables To support delivery of high-quality software design based on...

Job Name: Software Contractor Summary As a Software Contractor you'll be working on the commissioning of our machines in a software capacity. Your expertise will be crucial in: Siemens TIA V19 including Safety Siemens WinCC Unified HMI Motion/Servo drives PackML Keyence Vision Staubli robot - desirable Developing streamlined, efficient code Utilising advanced simulation tools to perfect software before real-world implementation. Ensuring our machines meet the highest safety standards by designing software compliant with the Machine Directive (BS EN 12100). Onsite work required – Mpac lambert site (Tadcaster) and possibly customer sites depending on the project allocated to. Must hold a UK driving license and must have the right to work in the UK Purpose of the assignment To support delivery of high-quality software design based on comprehensive understanding of customer and regulatory requirements and commissioning. Possess...

Purpose of the Role We are looking to build a pipeline of potential software contractors with the following skill sets and experience. If you are open to software/controls contract work and your skillset and experience are a good match below, please feel free to send your CV and we may contact you in the near future.   As a Software Contractor you'll be working on the commissioning of our machines in a software capacity. Your expertise will be crucial in: Siemens TIA V19 including Safety Siemens WinCC Unified HMI Motion/Servo drives PackML Keyence Vision Staubli robot - essential Developing streamlined, efficient code Utilising advanced simulation tools to perfect software before real-world implementation. Ensuring our machines meet the highest safety standards by designing software compliant with the Machine Directive (BS EN 12100).   Outputs/Deliverables To support delivery of high-quality software design based on...

Mpac Location: Hybrid / Tadcaster LS24, UK job type: Contract / Full-time Sector and subsector: Engineering Design Salary: Negotiable salary Job Specification Job Name: Software Contractor Summary As a Software Contractor you'll be working on the commissioning of our machines in a software capacity. Your expertise will be crucial in: Siemens TIA V19 including Safety Siemens WinCC Unified HMI Motion/Servo drives PackML Keyence Vision Staubli robot - desirable Developing streamlined, efficient code Utilising advanced simulation tools to perfect software before real-world implementation. Ensuring our machines meet the highest safety standards by designing software compliant with the Machine Directive (BS EN 12100). Onsite work required – Mpac lambert site (Tadcaster) and possibly customer sites depending on the project allocated to. Must hold a UK driving license and must have the right to work in the UK Purpose of...

Purpose of the Role We are looking to build a pipeline of potential software contractors with the following skill sets and experience. If you are open to software/controls contract work and your skillset and experience are a good match below, please feel free to send your CV and we may contact you in the near future.   As a Software Contractor you'll be working on the commissioning of our machines in a software capacity. Your expertise will be crucial in: Siemens TIA V19 including Safety Siemens WinCC Unified HMI Motion/Servo drives PackML Keyence Vision Staubli robot - essential Developing streamlined, efficient code Utilising advanced simulation tools to perfect software before real-world implementation. Ensuring our machines meet the highest safety standards by designing software compliant with the Machine Directive (BS EN 12100).   Outputs/Deliverables To support delivery of high-quality software design based on...

Job Name: Software Contractor Summary As a Software Contractor you'll be working on the commissioning of our machines in a software capacity. Your expertise will be crucial in: Siemens TIA V19 including Safety Siemens WinCC Unified HMI Motion/Servo drives PackML Keyence Vision Staubli robot - desirable Developing streamlined, efficient code Utilising advanced simulation tools to perfect software before real-world implementation. Ensuring our machines meet the highest safety standards by designing software compliant with the Machine Directive (BS EN 12100). Onsite work required – Mpac lambert site (Tadcaster) and possibly customer sites depending on the project allocated to. Must hold a UK driving license and must have the right to work in the UK Purpose of the assignment To support delivery of high-quality software design based on comprehensive understanding of customer and regulatory requirements and commissioning. Possess...

Senior Front-End React Developer At Bridebook, we're digitising the wedding industry! Join us in transforming the wedding planning experience for engaged couples around the world. Full-time Contractor · Remote · Competitive Day Rate Who is Bridebook anyway? Bridebook is a revolutionary wedding planning platform that seeks to make wedding planning an enjoyable, intuitive, and rewarding experience for couples, guests, and industry partners. Launched in the UK, Bridebook has over 1,000,000 planning couples and has been featured in major outlets such as the New York Times, the BBC, and the App Store. After seven years and many iterations later, we have 2 in 3 engaged UK couples and 1 in 3 engaged German couples using Bridebook, and have recently expanded into the French and Irish markets. While we serve a very emotional and creative industry, we are disrupting the wedding industry by leveraging cutting-edge technology to provide seamless and...

Waracle is looking for a Senior QA Engineer to join our world-class digital technology consultancy. We are home to a diverse, smart, curious, and ambitious community of specialists in technology-driven transformation. We partner with ambitious clients to help them solve their biggest business and customer challenges. Together, we innovate and create intelligent digital products and services. We thrive on complex challenges and deliver business-critical IT transformation projects, moving seamlessly from strategy, design, and delivery to operations. This role is available on Contract (Inside IR35) bases, initially for 6 months. If you love collaborating with multi-disciplinary teams and designing smart automation strategies we would love to hear from you!   Key Duties and Responsibilities As a Senior QA Engineer, you will play a vital role in defining our quality approaches, building scalable automation frameworks, and championing best practices across the...

The Synergy Programme is a large-scale transformation programme consisting of four Government departments, MOJ (Ministry of Justice), DWP (Department for Work and Pensions), DEFRA (Department for Environment, Food and Rural Affairs) and HO (Home Office). They will come together to replace their current back-office systems and introduce new ways of working for 220,000 civil servants combined. High-quality, accurate data is fundamental to ensuring a successful transition and enabling effective business processes, reporting and operations within the new ERP platform. The Data Engineer will play a critical role in supporting the MoJ contribution to the Synergy Programme by providing the technical capability required to extract, transform, manage and prepare source data for analysis. This role directly supports key programme priorities, including data quality improvement and data migration readiness.   As a  Senior Data Engineer, your main responsibilities will...

Why voize? Because we’re more than just a job! At voize, we believe the greatest gift to frontline workers is time - time to care, connect, and be present. Today, that time is lost to admin work that pulls nurses away from what matters most: people .   Your Mission As a Freelance Senior Backend Engineer for our German Market squad , you’ll ensure that data flows smoothly between our products and our partners' software solutions. You'll build and maintain the integrations that connect the voize with senior care and hospital software platforms. We are open for you to be based remotely across Germany, France or the UK.   Your Daily Business – No two days are alike Shape the future of our integrations – Develop interfaces that seamlessly connect voize with systems in the care and medical sector Build future-proof solutions – Develop a scalable API, set industry standards, and work closely with...