72 software contractor jobs found

This is a  contractor/freelancer  opportunity, and work is compensated based on tasks performed. Currently, we are only accepting applications from candidates in the countries  on our website , and require that resumes be submitted in English. What Interview Engineers do: Interview Engineers facilitate technical interviews with software developers around the world. As an Interview Engineer, you will create inclusive hiring processes by mitigating bias, improving hiring signals, and completing objective evaluations. These skills are critical to hiring and managing teams in startups and large enterprises. As a Karat Interview Engineer, you will: Interview— Facilitate an interview through Karat's platform. Create an enjoyable candidate experience while you evaluate a candidate's fundamental coding skills and technical knowledge. Evaluate— Provide input on the candidate's performance, coding style, communication skills,...

Location: UK-based, remote Commitment: Four days per week Contract: Outside IR35 Fee: £6,500 per month Start date: 20 November 2026 Term: Initial contract with the possibility of extension   ABOUT VAULTIER Vaultier is building a private collection-management platform for wealthy collectors and the personnel authorised to manage their high-value collections. The product combines secure digital records, collection administration, controlled access, approvals and coordination with trusted professionals.   Vaultier is preparing its first MVP and requires an experienced full-stack engineer to take technical ownership of the build.   THE ROLE The engineer will work from approved product requirements and designs to build, test and release the Vaultier MVP.   Some initial screens may be produced using AI-assisted development tools. The engineer will be responsible for reviewing and converting this...

AI Automation Developer / Workflow Automation Specialist Location: Remote, United Kingdom Job Type: Freelance / Self Employed Contractor Pay: £250 to £400 per day, depending on experience Start Date: November 2026 Working Arrangement: Flexible, project based, with potential for ongoing work About Us We a new UK based AI automation company focused on helping businesses improve efficiency, reduce operating costs, increase productivity and streamline their daily operations through intelligent automation. Our ambition is to establish a successful and scalable technology business providing practical AI and automation solutions to companies throughout the UK, with plans to expand into international markets. We are seeking an experienced, commercially minded AI Automation Developer to help establish the technical foundations of the company, develop our initial services and deliver reliable automation solutions to business clients. As a new...

HighRegard is a UK digital, software and AI consultancy operated by PureView Scans Ltd. We design and build websites, digital products, bespoke software, workflow tools and AI-enabled solutions for organisations seeking practical, user-focused digital services. We are looking for an experienced Freelance Senior UX / Service Designer to join HighRegard as a specialist delivery partner for a tender involving the discovery, design and development of a new digital prototype for a national UK charity. The proposed project is a discovery-led digital initiative intended to help public-service professionals access evidence, navigate support options and develop coordinated action plans. The first phase is focused on understanding user needs, validating service concepts, designing user journeys and developing and testing a functional prototype , rather than delivering a production-scale national platform. The client expects the digital partner to work collaboratively with its...

Are you a detail-oriented individual with a passion for research and a good understanding of national and local geography? This freelance opportunity allows you to work at your own pace and from the comfort of your own home.   A Day in the Life of an Online Data Analyst: In this role, you will be working on a project aimed at enhancing the content and quality of digital maps that are used by millions of people worldwide Completing research and evaluation tasks in a web-based environment such as verifying and comparing data, and determining the relevance and accuracy of information.   Join us today and be part of a dynamic and innovative team that is making a difference in the world!   TELUS Digital AI Community Our global AI Community is a vibrant network of 1 million+ contributors from diverse backgrounds who help our customers collect, enhance, train, translate, and localize content to build better AI models. Become part of...

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...

Software Engineer - Quantitative Decision Systems Experienced Junior to Mid-Level Location:  Remote, London-based Engagement:  Initial contractor, intended to convert to permanent Indicative contract rate:  GBP 350-550/day; target c. GBP 450/day Indicative permanent salary:  GBP 55,000-80,000 Reporting to:  Naverion Chief Technical Officer (CTO)   Role Summary Naverion is seeking a software engineer at experienced-junior to mid-level to deliver defined components across its quantitative decision platform. Working directly with the CTO, the engineer will implement, test, document and support the controlled release of production software. The role suits someone who can progress bounded work independently and, at the upper end of the range, own defined components through the full SDLC. Architecture, methodology, clinical interpretation, security design and production approval remain with the CTO and relevant...

Are you a Kotlin expert eager to shape the future of AI? Large-scale language models are evolving from chatbots into powerful developer assistants capable of reasoning about complex software systems. With high-quality engineering data, tomorrow's AI can support developers in solving real-world problems faster and more accurately. That training data begins with you—your coding expertise will help power the next generation of AI. We're looking for Kotlin specialists who can take real-world engineering scenarios—such as bug reports or feature requests in a Git repository—and produce clean, efficient, and idiomatic solutions using the Kotlin programming language. You'll create high-quality code patches that reflect modern Android development practices and ensure technical correctness, maintainability, and clarity. You should have hands-on experience with modern Android and Kotlin development, including Jetpack Compose, Kotlin Coroutines, and Jetpack libraries such...

Are you a coding expert fluent in Python eager to shape the future of AI? Large‑scale language models are evolving from clever chatbots into powerful engines of scientific discovery. With high‑quality training data, tomorrow's AI can democratize world‑class education, keep pace with cutting‑edge research, and streamline software development for engineers everywhere. That training data begins with you—we need your expertise to help power the next generation of AI. We're looking for Python coding specialists who live and breathe algorithms, data structures, software architecture, frontend and backend development, cloud infrastructure, and systems programming—and who can do so fluently using Python. You'll challenge advanced language models on topics like asynchronous programming, RESTful API integration, memory management, object-oriented design, secure coding practices, and debugging distributed systems—documenting every failure mode so we can harden model...

About the Role DEVENGINE CONSULTING LIMITED is seeking an experienced procurement, vendor management or supplier onboarding consultant who has previously worked with major IT services companies, banking technology providers or government IT suppliers. The objective is to help us register as an approved IT services supplier and establish commercial relationships that enable us to provide software engineers and technology contractors to banks, large enterprises and government organisations.   Target Organisations We are particularly interested in candidates with experience at or with organisations such as: IT Services & Consulting: Virtusa, Infosys, Mphasis, HCLTech, TCS, Wipro, Cognizant, Capgemini, Accenture, DXC Technology and others. Banking & Financial Services: Citi, Barclays, HSBC, JPMorgan Chase, NatWest and other financial institutions. Government & Public Sector: Crown Commercial Service (CCS), UK government departments, local...

Keywords Studios Los Angeles is the premier hub for our Media and Entertainment service line. From our campus in sunny Burbank, we provide full-service audio post-production and content localization for the world's most iconic entertainment leaders -including Netflix, Lionsgate, NBCU, and more -to help bring their stories to life and reach audiences worldwide. As part of the global Keywords Studios network, we combine the boutique feel of a local creative studio with the massive reach of a worldwide organization. Our dedicated content localization team specializes in high-impact localization, including: Translation & Subtitling Dubbing & Voice-Over Linguistic Quality Assurance Whether it 's adapting blockbuster game franchises or ensuring accessibility for film and TV audiences, our work helps bridge language and cultural gaps with precision and creativity. We pride ourselves on our diverse, inclusive culture and our commitment to professional...

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...

Job Title: Software & DevOps Engineer Location: London Hybrid Duration: 12 months Contract Start Date: November, ASAP Day Rate: Competitive (Inside IR35)   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role This role requires a senior software engineer specializing in Java and JavaScript development to design, build, and secure enterprise-level applications and platforms. The consultant will be a key figure in enhancing software supply chain security and driving the adoption of secure development practices across the software...

Freelance Senior UX / Service Designer – Digital Prototype HighRegard is a UK digital, software and AI consultancy operated by PureView Scans Ltd. We design and build websites, digital products, bespoke software, workflow tools and AI-enabled solutions for organisations seeking practical, user-focused digital services. We are looking for an experienced Freelance Senior UX / Service Designer to join HighRegard as a specialist delivery partner for a tender involving the discovery, design and development of a new digital prototype for a national UK charity. The proposed project is a discovery-led digital initiative intended to help public-service professionals access evidence, navigate support options and develop coordinated action plans. The first phase is focused on understanding user needs, validating service concepts, designing user journeys and developing and testing a functional prototype , rather than delivering a production-scale national platform. The...

AI Automation Developer / Workflow Automation Specialist Location: Remote, United Kingdom Job Type: Freelance / Self Employed Contractor Pay: £250 to £400 per day, depending on experience Start Date: November 2026 Working Arrangement: Flexible, project based, with potential for ongoing work About Us We a new UK based AI automation company focused on helping businesses improve efficiency, reduce operating costs, increase productivity and streamline their daily operations through intelligent automation. Our ambition is to establish a successful and scalable technology business providing practical AI and automation solutions to companies throughout the UK, with plans to expand into international markets. We are seeking an experienced, commercially minded AI Automation Developer to help establish the technical foundations of the company, develop our initial services and deliver reliable automation solutions to business clients. As a new...

Are you a Kotlin expert eager to shape the future of AI? Large-scale language models are evolving from chatbots into powerful developer assistants capable of reasoning about complex software systems. With high-quality engineering data, tomorrow's AI can support developers in solving real-world problems faster and more accurately. That training data begins with you—your coding expertise will help power the next generation of AI. We're looking for Kotlin specialists who can take real-world engineering scenarios—such as bug reports or feature requests in a Git repository—and produce clean, efficient, and idiomatic solutions using the Kotlin programming language. You'll create high-quality code patches that reflect modern Android development practices and ensure technical correctness, maintainability, and clarity. You should have hands-on experience with modern Android and Kotlin development, including Jetpack Compose, Kotlin Coroutines, and Jetpack libraries such...

Are you a coding expert fluent in Python eager to shape the future of AI? Large‑scale language models are evolving from clever chatbots into powerful engines of scientific discovery. With high‑quality training data, tomorrow's AI can democratize world‑class education, keep pace with cutting‑edge research, and streamline software development for engineers everywhere. That training data begins with you—we need your expertise to help power the next generation of AI. We're looking for Python coding specialists who live and breathe algorithms, data structures, software architecture, frontend and backend development, cloud infrastructure, and systems programming—and who can do so fluently using Python. You'll challenge advanced language models on topics like asynchronous programming, RESTful API integration, memory management, object-oriented design, secure coding practices, and debugging distributed systems—documenting every failure mode so we can harden model...

  About Holotwins Bharat Holotwins Bharat is an agile, high-velocity software engineering and digital transformation firm based in India. We specialize in building robust, scalable digital ecosystems, custom software architectures, and specialized tech infrastructure for global businesses. By blending top-tier technical talent with highly optimized delivery frameworks, we enable startups, SMEs, and mid-market agencies to accelerate their product roadmaps at a fraction of local engineering costs. As we expand our footprint across the UK and European markets , we are looking for a sharp, commercially driven local partner to bridge the geographic gap and build trusted, high-value relationships with European tech leaders.   About the Role We are seeking an independent, results-oriented Freelance Business Development Manager / Sales Agent based natively in the UK or Europe. Your primary mission is to act as the "local face and voice" of...

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...

Are you a Kotlin expert eager to shape the future of AI? Large-scale language models are evolving from chatbots into powerful developer assistants capable of reasoning about complex software systems. With high-quality engineering data, tomorrow's AI can support developers in solving real-world problems faster and more accurately. That training data begins with you—your coding expertise will help power the next generation of AI. We're looking for Kotlin specialists who can take real-world engineering scenarios—such as bug reports or feature requests in a Git repository—and produce clean, efficient, and idiomatic solutions using the Kotlin programming language. You'll create high-quality code patches that reflect modern Android development practices and ensure technical correctness, maintainability, and clarity. You should have hands-on experience with modern Android and Kotlin development, including Jetpack Compose, Kotlin Coroutines, and Jetpack libraries such...