fullstack developer contract jobs in County of Cardiff

You will be responsible for the end-to-end design, development, and delivery of a critical, high-scale digital service. Leveraging your expertise across the full technology stack, you will build robust solutions that meet stringent standards for security, performance, and reliability.

A fast-growing fintech company is hiring a Fullstack Developer(AI) to help build the next generation of intelligent, personalized financial platforms. This role blends modern front-end engineering with AI-powered workflows, automation, and human-centered design to deliver seamless digital experiences for users across global markets. You'll join a lean, high-impact product and engineering team...

Benefits - 39 days holiday - 9% pension contribution - Stock Options This is your chance to perform the job you love and make a difference in society whilst doing it! Help this one-of-a-kind Social Good platform change the world by developing this one-of-a-kind eCommerce solution. The Company - $120m VC-backed Scale-Up - One of the fastest-growing companies in the world - 'Fast Company' Most...

Front-End Contractor (React / Next.js) Location: Remote (UK based candidates only) Contract: Outside IR35 Day Rate: Up to £400 per day I am currently looking for an experienced front-end developer to help deliver key product features at speed for one of my start up clients. You’ll work on high-impact UI components and collaborate with design, backend, and AI teams to create interfaces for...

Join OSF Digital this year - a globally recognised digital transformation specialist, and be part of our driven and innovative team. As a trusted Salesforce partner for over a decade, we are experts in B2B, B2C, and multi-cloud solutions. We have recently celebrated our 20th anniversary and have been steadily expanding our global presence. We are proud of our many accomplishments, including...

Company Description Cryptoiex, founded in 2019, is an Estonia-based blockchain platform designed to make cryptocurrency trading fast and easy. The platform provides lightning-fast trade execution, dependable digital wallets, and top-tier security practices. With a mission to simplify the exchange process, Cryptoiex actively contributes to the crypto community while driving transformative...

You will be a Senior level App Developer to join an in-house team to help develop and launch two exciting new products that will form a key part of the company proprietary event technology suite. Working closely with the CTO, following clear technical requirements along with an experienced Developer and the Head of department to bring both apps to life, from initial build to live deployment.

Overview AUDITSU is developing a proprietary automation system to explore and analyse mobile applications at scale. We’re looking for an engineer who understands the internals of Android automation frameworks and enjoys solving problems that don’t yet have established answers. This is a 60-day R&D contract with defined outcomes, full technical autonomy, and scope for continued...

Node.js / JavaScript Developer (Outside IR35) Location: UK Remote (Manchester or London preferred for occasional meetings) Rate: £400 per day (Outside IR35) Duration: 3 months (initial) Start Date: ASAP The Role We're looking for an experienced Node.js / JavaScript Developer to join a 3-month greenfield project, focused on upgrading and modernising an existing system from Perl to...

Contract Test Manager Interested in learning more about this job Scroll down and find out what skills, experience and educational qualifications are needed. Contract, Outside IR35 £425/day Cardiff | Hybrid (1 day per week office-based) This contract Test Manager role is working with a leading provider of business process outsourcing & support services for the public and commercial sectors....

Growth Marketer (Contract) B2B Lead Generation Outside IR35 2–3 days per week Remote Day Rate dependent on experience I’m supporting a fast-growing SaaS business in the People/HR space who are looking for a hands-on Growth Marketer to help scale their B2B lead generation engine. Having just hired a Sales Director, they now want a commercially minded marketer who can partner with sales to...

Senior Technical Business Analyst – Contract (ADM Focus) This one’s all about impact. Our client is bidding on a major programme of work and needs a proven Business Analyst to help shape how applications are built, enhanced, and supported across the business. If you know your way around ADM, this could be the start of something big. Role Overview: - Location: London - Package: £DOE | 6-month...

Cloud Infrastructure Engineer (Contract) – Data Centre Migration 📍 Hybrid / Bristol (on-site once per month) 💰 £550 per day (Inside IR35) 🕒 3-Month Initial Contract | 12-Month+ Project About the Role We are seeking an experienced Cloud Infrastructure Engineer to support a large-scale data centre migration project for one of our key clients. This is an exciting opportunity to work on a...

Job Description Contract Manager Band 7 (£47,809 - £54,710 per annum) Full-Time | Permanent Hybrid Working About the Role: We are seeking a commercially focused and detail-oriented Contract Manager to join a forward-thinking organisation delivering high-performing services across the public sector. This newly created role offers the opportunity to manage a portfolio of high-value contracts,...

You will need to be able to create strong, visually exciting content that fits within our brand guidelines, which may include but not be limited to graphics, videos and reels and photo editing encouraging engagement that builds brand awareness, drives traffic and fosters both engagement with brand partners and our community.

DV Cleared - Contract Palantir Engineer (Outside IR35) Contract Length: 3-6 months initially (extensions highly likely) IR35 Status: Outside IR35 About the Role We're looking for experienced Contract Palantir Engineers with active DV clearance to join a high-impact project working alongside a 3rd-party supplier team. You'll play a key role in designing, building, and documenting applications...

Contract Test Manager Contract, Outside IR35 £425/day Cardiff | Hybrid (1 day per week office-based) This contract Test Manager role is working with a leading provider of business process outsourcing & support services for the public and commercial sectors. This is an 8 months contract assignment (outside IR35) to start asap, working out of the Cardiff office once per week. The...

Interim Legal counsel 3 month contract £300 - £350 per day UK - fully remote Responsibilities - Analyzing, summarizing, advising on, drafting and negotiating all kinds of contractual documentation including software license agreements and SaaS agreements for customers - Ensuring compliance with corporate policies - Negotiating with outside parties on contractual issues and legal disputes -...

We’re looking for an ambitious Contract Product Designer to join a leading Hospitality organisation. You’ll play a key role in product discovery and development, collaborating closely with product and engineering teams to create high-fidelity prototypes and deliver exceptional user experiences. Key Skills & Requirements - Design intuitive, engaging interfaces across multiple touchpoints. -...

Contract Test Manager Contract, Outside IR35 £425/day Cardiff | Hybrid (1 day per week office-based) This contract Test Manager role is working with a leading provider of business process outsourcing & support services for the public and commercial sectors. This is an 8 months contract assignment (outside IR35) to start asap, working out of the Cardiff office once per week. The...