92 software engineer jobs found in London

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...

We are urgently looking for experienced candidates with strong hands-on Java development skills and design experience. While an architect title is not mandatory, we are particularly interested in profiles of senior developers with solid technical expertise. Required Core Skills: - Java - Python - GoLang -Design, develop, and maintain high-quality Java applications. -Write clean, efficient, and well-documented code. -Perform code reviews and optimize existing codebases. -Ensure application performance and reliability. -Develop and maintain automated tests to ensure code quality. -Work with CI/CD pipelines to streamline the development and deployment process. Job Types: Full-time, Freelance Pay: £350.00-£370.00 per day Schedule: Monday to Friday Experience: Java: 7 years (required) Python: 3 years (required) Go: 2 years (required)

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...

We are urgently looking for experienced candidates with strong hands-on Java development skills and design experience. While an architect title is not mandatory, we are particularly interested in profiles of senior developers with solid technical expertise. Required Core Skills: - Java - Python - GoLang -Design, develop, and maintain high-quality Java applications. -Write clean, efficient, and well-documented code. -Perform code reviews and optimize existing codebases. -Ensure application performance and reliability. -Develop and maintain automated tests to ensure code quality. -Work with CI/CD pipelines to streamline the development and deployment process. Job Types: Full-time, Freelance Pay: £350.00-£370.00 per day Schedule: Monday to Friday Experience: Java: 7 years (required) Python: 3 years (required) Go: 2 years (required)

Company Description Established in 2009, Crew à la Mode is an apparel and lifestyle agency, supplying luxury performance clothing and lifestyle solutions for super yachts, private aviation, hotels, villas and private residences globally.     Based in our London Head Office, our project management team manages the sourcing of luxury yacht crew clothing and uniform from key suppliers. Our product line is expanded by our own consciously produced luxury crew clothing range, CALM by CREW, which is designed in-house and distributed from our EU warehouse located in Portugal.   Role Description We are looking for a skilled software engineer to be the in-house support for our core business systems, specialising in Odoo development, ERP customisation and API integration.   This will initially be on a project contract basis and longer term will be an on-going contract which covers debugging technical issues, troubleshooting and...

ABOUT THE COMPANY Onmo believes that everyone has the right to access, understand and manage their money with confidence. Our ambition is to improve lives by providing better clarity, intelligence and technology to empower every individual in making the smartest financial decisions. We may be young but we have an incredible team in place and big ambitions for the years ahead. We design our products to help demystify money matters wherever possible, providing customers with more financial control and flexibility in their lives. This helps them get more from what they have, or with smart decisions, make more of the same. It also means people spend less time with the negative aspects of money and more on the positive - enjoying what the world has to offer. ABOUT THE ROLE Tech Stack Backend : AWS Serverless Service, including Lambda, API Gateway, DynamoDB, S3, SNS, SQS, EventBridge, Kinesis, Node.js, YAML Frontend : React / Next.js, React Native Programming...

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"...

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:...

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...

About Us: Based in San Francisco, California, Turing is the world’s leading research accelerator for frontier AI labs and a trusted partner for global enterprises deploying advanced AI systems.   Turing supports customers in two ways: first, by accelerating frontier research with high-quality data, advanced training pipelines, plus top AI researchers who specialize in software engineering, logical reasoning, STEM, multilinguality, multimodality, and agents; and second, by applying that expertise to help enterprises transform AI from proof of concept into proprietary intelligence with systems that perform reliably, deliver measurable impact, and drive lasting results on the P&L.   Project Overview: As a Software Engineering evaluator, you will create cutting-edge datasets for training, benchmarking, and advancing large language models, collaborating closely with researchers. This includes curating code examples, providing precise...

📣 Qim info – Who are we?   Founded in 2004, Qim info is an Swiss IT engineering and digital services company. We regularly collaborate with international clients and are looking for skilled contractors to support project-based engagements.   📄 Your responsibilities:   The objective of this role is to design, build, and govern an API integration layer connecting multiple internal and external systems within a complex energy trading environment.   💼 Required technical skills:   API & Integration Architecture: Strong expertise in API integration, REST API design and exposure, interface-driven architectures, integration-heavy environments, abstraction layers, system decoupling Backend Development: .NET Core, C#, API services, integration services Architeture & Platforms: Design of scalable and reusable integration layers, interoperability with multiple systems...

🚀 Senior DevSecOps Engineer – Contract Opportunity (Inside IR35) UK GOVT CONTRACT - 6 months   Fimatix UK Ltd is looking for a Senior DevSecOps Engineer (SFIA 7) to join our team and play a key role in building and securing modern DevSecOps capabilities across a large-scale digital programme. This is a hands-on engineering role focused on embedding secure-by-design practices into CI/CD pipelines, AWS infrastructure, and identity services , while also helping drive AI-enabled DevOps automation to improve operational intelligence and threat detection.   🔧 Key Responsibilities Design and implement secure CI/CD pipelines with integrated security tooling (SAST, DAST, container scanning, dependency scanning). Embed security-by-design principles across AWS infrastructure and deployments. Implement IaC security guardrails using Terraform/CloudFormation. Configure and optimise AWS-native security services (Security Hub,...

Senior Software Deployment Engineer - Contract - Ouside IR35 Mindera are currently looking for a Senior Software Deployment Engineer who can lead the delivery, configuration, testing, and rollout of applications and retail device solutions across complex, large-scale environments. In this role you will help shape deployment strategy, drive automation, improve reliability, mentor engineers, and work closely with product, platform, and engineering teams to ensure smooth, secure, and high-quality releases that reaches thousands of customers. This is a hybrid role and you will be expected to be on site in Bracknell 3 days per week. Requirements Deployment & Configuration Leadership Lead end-to-end deployment processes across Dev, Test, UAT, Pre-Prod, and Production. Design scalable, repeatable deployment workflows and environment strategies. Drive automation across CI/CD pipelines using scripting, IaC, and tooling improvements. Ensure...

We are seeking a passionate Software Engineering Manager who will provide technical expertise and operate with excellence. Being creative, curious, and confident, you will be an integral part of our empowered, self-managing, multi-disciplinary engineering teams - designing, building, releasing, and maintaining products. You will play a key role in driving our ambition to create a best-in-class software engineering team, environment, and culture. This is an initial 6 month contract (outside IR35) that requires you to work on client site 3 days a week in London, Paddington.   Your key accountabilities will include: • Team Management: Build, mentor, and manage a high-performing software engineering team. Foster a culture of collaboration, innovation, and continuous improvement within the team. Facilitate communication and collaboration among team members. Ensure budgets, people and resource allocation, and workload, balance across projects. • Agile Delivery:...

Description We are seeking a passionate Software Engineering Manager with a strong background in modern frontend engineering, particularly React, Next.js, and TypeScript, to provide technical leadership and operate with excellence. Creative, curious, and confident, you will be an integral part of our empowered, self-managing, multi-disciplinary engineering teams -designing, building, releasing, and maintaining high-quality digital products. You will play a key role in shaping and growing a best-in-class frontend engineering capability, establishing modern development practices and building scalable, high-performance web applications. This is an initial 6-month contract (outside IR35) requiring 3 days per week onsite in Paddington, London. Key Accountabilities Team Leadership Build, mentor, and lead a high-performing team of frontend engineers specialising in React, Next.js, and TypeScript. Foster a culture of collaboration, technical excellence, and...

About Prolific Prolific is not just another player in the AI space – we are building the biggest pool of quality human data in the world. Over 35,000 AI developers, researchers, and organizations use Prolific to gather data from paid study participants with a wide variety of experiences, knowledge, and skills. The role We're looking for Senior Python Developers to join our Expert Network to help train and evaluate cutting-edge AI models. If you have a background in Software Engineering, we'll send you a quick 10- to 15-minute test to assess your skills. If successful, you'll be invited to join Prolific as a participant, where you'll get paid to help AI understand and summarize complex scientific data. Researchers looking for your skills tend to pay up to $50/hr, depending on skills and experience level . You must be prepared to complete paid tasks that require one hour of uninterrupted work , though many are shorter. What you'll bring Educational...

About Dune Dune is on a mission to make crypto data accessible. We’re a collaborative multi-chain analytics platform used by thousands of developers, analysts, & investors to understand the on-chain world and the frontiers of finance. We’re a team of ~60 employees, working together across Europe and eastern US timezones 🌍️. We believe in our mission, and in building a powerful, open product that allows individuals and communities to do deep research into important ecosystems like Bitcoin, Ethereum, Solana, and many more.   We’re backed by some of the world's best investors. In February 2022, we announced our Series B funding round led by Coatue and Union Square Ventures, an important milestone that allowed us to double down on our mission. We’re using the funds to educate, reward and empower a new generation of onchain analysts aka Wizards 🧙 ♀️   If you want to have one of the highest impact jobs on the planet, come join our...