26 software engineer jobs found

Senior Software Engineer – Java (Contractor) Outside IR35 Rate: £400 - £500 per day Duration: 3 Months Plus Start Date: ASAP   As a Senior Software Engineer (Java) – Contractor at Pulselive, you’ll be focused on delivering robust, high-performance backend services and APIs that power digital experiences for millions of sports fans globally. This role is ideal for an experienced, hands-on engineer with strong Java and Spring expertise who thrives in a collaborative and fast-paced delivery environment. You’ll work closely with cross-functional teams to build, integrate, and optimize systems that handle real-time sports data, video, and live commentary. This position is project- and delivery-focused, with no line management or people-leadership responsibilities required.   Key Responsibilities: Design and develop scalable backend systems using Java and Spring Boot...

Location London, Greater London (Hybrid) Employment Type Contractor Minimum Experience Experienced Compensation £600 per day Software Engineer (3 month contract) ABOUT US:   Here at Sphere ( www.onsphere.com) we operate in the dynamic world of energy commodities trading, where information and speed are crucial for success. However, data in these markets is often fragmented and opaque, leaving participants with incomplete and poor-quality information…. Here at Sphere, we aim to bring order to this chaos by leveraging our innovative voice and AI technologies, as well as our patented Liquidity Lake, which consolidates all actionable liquidity onto one screen. Enhanced by AI insights and quantitative analytics, our platform is designed to support even the most skilled traders; See more.  Win more.   THE OPPORTUNITY:   Pick up...

Full job description This is a contract role for 3 months, starting in May ideally.   At Collinson, we don’t just build technology — we power the experiences behind some of the world’s most recognised travel, financial services, and retail brands. Our solutions help global brands acquire, engage, and retain millions of customers worldwide. Our flagship product is Priority Pass, the world’s leading airport experiences programme, trusted by travellers across more than 170 countries. Key clients include Mastercard, American Express, Cathay Pacific, British Airways, LATAM, Flying Blue, Accor, EasyJet, HSBC, Chase, HDFC. Our mission is focused on doing good beyond profit, which for us means we seek out opportunities for our people to share in our success and that we give back to the communities and people within which we work. Never short of ambition, the success of our business is delivered through the diverse and talented...

Senior Software Engineer – Java (Contractor) Outside IR35 Rate: £400 - £500 per day Duration: 3 Months Plus Start Date: ASAP   As a  Senior Software Engineer (Java) – Contractor  at Pulselive, you’ll be focused on delivering robust, high-performance backend services and APIs that power digital experiences for millions of sports fans globally. This role is ideal for an experienced, hands-on engineer with strong Java and Spring expertise who thrives in a collaborative and fast-paced delivery environment. You’ll work closely with cross-functional teams to build, integrate, and optimize systems that handle real-time sports data, video, and live commentary. This position is project- and delivery-focused, with no line management or people-leadership responsibilities required.   Key Responsibilities: Design and develop scalable backend systems using Java and Spring...

Senior Software Engineer – Java (Contractor) Outside IR35 Rate: £400 - £500 per day Duration: 3 Months Plus Start Date: ASAP   As a Senior Software Engineer (Java) – Contractor at Pulselive, you’ll be focused on delivering robust, high-performance backend services and APIs that power digital experiences for millions of sports fans globally. This role is ideal for an experienced, hands-on engineer with strong Java and Spring expertise who thrives in a collaborative and fast-paced delivery environment. You’ll work closely with cross-functional teams to build, integrate, and optimize systems that handle real-time sports data, video, and live commentary. This position is project- and delivery-focused, with no line management or people-leadership responsibilities required.   Key Responsibilities: Design and develop scalable backend systems using Java and Spring Boot...

Joining a new project Ideally have worked on Financial Services Projects before (Payments would be great) Emphasis on Architecture over Development (Must have a solid Development Background) Must be comfortable sitting in client meetings and advising Start date ASAP Duration 3 months (Likely to extend) 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"...

Senior Software Engineer – Java (Contractor) Outside IR35 Rate: £400 - £500 per day Duration: 3 Months Plus Start Date: ASAP   As a Senior Software Engineer (Java) – Contractor at Pulselive, you’ll be focused on delivering robust, high-performance backend services and APIs that power digital experiences for millions of sports fans globally. This role is ideal for an experienced, hands-on engineer with strong Java and Spring expertise who thrives in a collaborative and fast-paced delivery environment. You’ll work closely with cross-functional teams to build, integrate, and optimize systems that handle real-time sports data, video, and live commentary. This position is project- and delivery-focused, with no line management or people-leadership responsibilities required.   Key Responsibilities: Design and develop scalable backend systems using Java and Spring Boot...

Joining a new project Ideally have worked on Financial Services Projects before (Payments would be great) Emphasis on Architecture over Development (Must have a solid Development Background) Must be comfortable sitting in client meetings and advising Start date ASAP Duration 3 months (Likely to extend) 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"...

Fullstack Software Engineer (Freelance) Time commitment: Freelance project lasting around 3 to 5 months         Location: Hybrid or Remote Reporting to: VP of Technology, Avishai Gurt About Paloma Paloma’s mission is to make children’s autism and ADHD assessments and care available on the NHS within 4 weeks of GP referral. We are making this possible by setting a new standard for high-quality autism and ADHD care, building great software & AI tools, and investing in clinicians' learning & development.   Mark and Darshak founded Paloma due to their frustration that families are waiting 4-10 years for NHS children’s autism and ADHD assessments. This crisis in NHS children’s neurodevelopmental services has been highlighted by the Children’s Commissioner for England here:...

Fullstack Software Engineer (Freelance) Time commitment: Freelance project lasting around 3 to 5 months         Location: Hybrid or Remote Reporting to: VP of Technology, Avishai Gurt About Paloma Paloma’s mission is to make children’s autism and ADHD assessments and care available on the NHS within 4 weeks of GP referral. We are making this possible by setting a new standard for high-quality autism and ADHD care, building great software & AI tools, and investing in clinicians' learning & development.   Mark and Darshak founded Paloma due to their frustration that families are waiting 4-10 years for NHS children’s autism and ADHD assessments. This crisis in NHS children’s neurodevelopmental services has been highlighted by the Children’s Commissioner for England here:...

Time commitment: Freelance project lasting around 3 to 5 months Location: Hybrid or Remote Reporting to: VP of Technology, Avishai Gurt   About Paloma   Paloma’s mission is to make children’s autism and ADHD assessments and care available on the NHS within 4 weeks of GP referral. We are making this possible by setting a new standard for high-quality autism and ADHD care, building great software & AI tools, and investing in clinicians' learning & development.   Mark and Darshak founded Paloma due to their frustration that families are waiting 4-10 years for NHS children’s autism and ADHD assessments. This crisis in NHS children’s neurodevelopmental services has been highlighted by the Children’s Commissioner for England here:...

Full job description Join Secure Code Warrior to create a safer digital landscape by assisting companies to secure their software through developer-led practices!   Secure Code Warrior’s mission is to establish new standards for coding that transform the ways software is created. We do this by providing the world’s leading agile learning platform that delivers the most effective secure coding solution for developers to learn, apply, and retain software security principles. More than 600 enterprises trust Secure Code Warrior to implement agile learning security programs, build safer software, and create a culture of developer-driven security. We are a venture-backed company with offices in Australia, the United States, Belgium, Iceland, and the United Kingdom.   Secure Code Warrior is seeking a Senior Engineer to take long-term ownership of our core system-level product suite across Windows and macOS. In this contract...

Join Secure Code Warrior to create a safer digital landscape by assisting companies to secure their software through developer-led practices!   Secure Code Warrior’s mission is to establish new standards for coding that transform the ways software is created. We do this by providing the world’s leading agile learning platform that delivers the most effective secure coding solution for developers to learn, apply, and retain software security principles. More than 600 enterprises trust Secure Code Warrior to implement agile learning security programs, build safer software, and create a culture of developer-driven security. We are a venture-backed company with offices in Australia, the United States, Belgium, Iceland, and the United Kingdom.   Secure Code Warrior is seeking a Senior Engineer to take long-term ownership of our core system-level product suite across Windows and macOS. In this contract role, you will be the architectural...

Front End Developer (Contract) Full job description Company Description ReactWise is a seed-stage start-up located in Cambridge (UK) that offers powerful no-code software for optimizing chemical reactions. Using machine learning (ML) algorithms developed by the founders during their PhDs at the University of Cambridge, their software can significantly reduce process development time, bringing novel drugs to clinical trials much faster. Several chemical and pharmaceutical companies currently use our software - from start-ups to big pharma. As an early-stage start-up, we offer the opportunity to build software at the cutting edge of machine learning and chemistry, with short iteration cycles and autonomy to shape the software development process. Role Description We’re looking for a front end software engineer to join our small, fast-moving team in Cambridge on a 3-month contract. You'll work closely with our founders and software engineers to build...

Company Description ReactWise is a seed-stage start-up located in Cambridge (UK) that offers powerful no-code software for optimizing chemical reactions. Using machine learning (ML) algorithms developed by the founders during their PhDs at the University of Cambridge, their software can significantly reduce process development time, bringing novel drugs to clinical trials much faster. Several chemical and pharmaceutical companies currently use our software - from start-ups to big pharma. As an early-stage start-up, we offer the opportunity to build software at the cutting edge of machine learning and chemistry, with short iteration cycles and autonomy to shape the software development process. Role Description We’re looking for a front end software engineer to join our small, fast-moving team in Cambridge on a 3-month contract. You'll work closely with our founders and software engineers to build appealing and intuitive user interfaces that help scientists run...

Company Description ReactWise is a seed-stage start-up located in Cambridge (UK) that offers powerful no-code software for optimizing chemical reactions. Using machine learning (ML) algorithms developed by the founders during their PhDs at the University of Cambridge, their software can significantly reduce process development time, bringing novel drugs to clinical trials much faster. Several chemical and pharmaceutical companies currently use our software - from start-ups to big pharma. As an early-stage start-up, we offer the opportunity to build software at the cutting edge of machine learning and chemistry, with short iteration cycles and autonomy to shape the software development process. Role Description We’re looking for a front end software engineer to join our small, fast-moving team in Cambridge on a 3-month contract. You'll work closely with our founders and software engineers to build appealing and intuitive user interfaces that help scientists run...

Job Purpose As a Senior Power Platform Developer with experience of implementing solutions using the Microsoft Power platform toolset, the role-holder will work as part of a multi-disciplinary team on an exciting Alpha phase of a digital services solution for a major UKRI programme - Research Excellence Framework. With a passion for cutting-edge technology and embracing low code platforms such as the MS Power Platform, the role holder will provide technical input and innovation to ensure appropriate solutions are in place to meet business requirements.   As a Power Platform Engineer you will design, build, and maintain low code solutions that support UKRI's strategic and operational objectives. The role enables teams across UKRI to automate processes, improve data accessibility, and deliver secure, scalable digital services using Microsoft Power Platform technologies. The engineer works closely with product owners, business analysts, and technical teams to translate...

About Us at GoCardless GoCardless is a global bank payment company. Over 100,000 businesses , from start-ups to household names, use GoCardless to collect and send payments through direct debit, real-time payments and open banking.  GoCardless processes US$130bn+ of payments annually, across 30+ countries ; helping customers collect and send both recurring and one-off payments , without the chasing, stress or expensive fees. We use AI-powered solutions to improve payment success and reduce fraud. And, with open banking connectivity to over 2,500 banks , we help our customers make faster, more informed decisions. We are headquartered in the UK with offices in London and Leeds , and additional locations in Australia, France, Ireland, Latvia, Portugal and the United States. At GoCardless, we're all about supporting you ! We’re committed to making our hiring process inclusive and accessible . If you need extra support or adjustments,...

  Temporary   Closing on: Aug 4 2026   Competitive 4 month contract Day Rate to be discussed We want to maximise the potential of everyone who chooses to work for us. We offer a great work life balance. You have the opportunity to work at any of our brand-new Regional Centres and to also work remotely. Contracts vary in length dependent upon the project with the possibility to extend. Your time spent with us short or long term will be invaluable - your skills and expertise are needed to deliver the largest digital and transformation projects in Government. There really couldn’t be a better time to join HMRC for your new contract opportunity! About the Project The Digitising Post Programme (DPP) is a major transformation initiative focused on modernising how HMRC creates, manages and delivers outbound customer communications. The programme aims to move highvolume correspondence away...

As a Salesforce Test Automation Engineer, you will influence quality at all stages of the project, driving continuous improvement and getting involved with requirements, analysis, design, testing and release of enterprise level software applications. You will work to ensure the successful delivery of the major platform work items from different IT projects through robust integration and test processes.   The ideal candidate for this role will be able to demonstrate experience with Acceptance testing (Including UAT), Exploratory Testing and Automation of functional and non-functional requirements. You will need to have an aptitude to pick up new skills quickly and a desire to provide coaching and mentoring to other testers within the team and other areas of the organisation.   Experience of Salesforce projects and SFDC platform experience is required for this role.   Key Responsibilities and Accountabilities: Identify and raise awareness of...