startup jobs in Cardiff

🌍 Expressions of Interest – VC-Backed Cleantech Startups ⚡ At Intervl Group, we partner with some of the most exciting venture-backed businesses across Future Mobility, Renewables, Energy Storage, and Climate Tech. These companies are funded by leading European and North American investors and are building the solutions that will define the energy transition. We are currently seeking...

You will own the UK market from the first touchpoint to the final signature, selling directly to CTOs, Heads of QA, and Engineering Leaders.

About the role I’m working with a well-funded early-stage BioAI startup applying machine learning to a hard, underexplored biological problem with real implications for climate resilience and food security. They’re building an ML-first platform where research doesn’t sit in isolation. Models are expected to ship, be used by scientists, and influence real experimental decisions. They’re looking...

🚨 Full Stack Engineer (AI & Cybersecurity Startup) - EU Remote🚨 We're partnering with a well-funded AI startup (stealth for now) that’s building at the intersection of LLMs and cybersecurity, and we’re looking to connect with exceptional Full Stack Engineers across the EU. This is an early engineering hire with huge ownership, high autonomy, and the chance to shape a modern product and...

Code Wizards Group is a world leader in backend and multiplayer infrastructure for the gaming industry. From high-scale AAA console and PC games to fast-paced mobile indie titles, we empower studios to bring multiplayer experiences to life. Within the Group lie Multiplayer Wizards, whose sole responsibility is to help game studios to run and operate their game infrastructure seamlessly for the...

You will be the key link between clients, engineers, and the office team, ensuring every project is delivered to the highest standards of safety, efficiency, and quality.

You will also play a crucial part in shaping operations as the company grows, managing other project managers and contributing to long-term strategy.

You will be the key link between clients, engineers, and the office team, ensuring every project is delivered to the highest standards of safety, efficiency, and quality.

You will also play a crucial part in shaping operations as the company grows, managing other project managers and contributing to long-term strategy.

About the Team Dex is an AI-powered recruiter, matching exceptional software engineers with top tech companies. We're one of the fastest-growing UK startups, and have raised $3.1M from a16z and Concept Ventures to build a best-in-class voice agent, matching engine and web app experience that will redefine the way that talent and opportunity connect. We're hiring a Python engineer to join our...

Senior Backend Engineer | Fully Remote UK | £70,000-£75,000 | Python | Django | AWS Location: Fully Remote - Candidates MUST be UK based Salary: £70,000-£75,000 + benefits Tech Stack: - Backend: Python (Django) - Frontend: React - Cloud Systems: AWS, Docker Are you a Senior Backend Engineer who enjoys taking ownership of real production systems and shaping how a platform evolves as it...

ABOUT US Jotform is a San Francisco-based SaaS company with more than 35 million users worldwide. We are thriving and growing, and we’ve never needed outside funding. That’s because we like keeping things agile, independent, and fun. Jotform believes everyone should be able to create their own online forms. Our 10,000+ ready-made form templates, 100+ integrations, and more than 380 widgets have...

About Revolut People deserve more from their money. More visibility, more control, and more freedom. Since 2015, Revolut has been on a mission to deliver just that. Our powerhouse of products — including spending, saving, investing, exchanging, travelling, and more — help our 65+ million customers get more from their money every day. As we continue our lightning-fast growth, 2 things are...

Senior Quality Engineer Medical Device Startup | £60M Raised Why This Role Matters This is a rare opportunity to join a high-growth medical device startup that has raised £60M from top-tier investors and is scaling rapidly towards global commercialisation. The company is building next-generation medical technologies that will meaningfully improve patient outcomes. As Senior Quality Engineer,...

Business Development Representative Jade Road Consulting are partnering with a rapidly scaling Accounting Software company that has doubled in size every year since launch. With an ambitious FY26 growth strategy underway, they’re now looking to bring an experienced Business Development Representative(BDR) into the team to fuel their next phase of expansion. The Role As a driven and proactive...

You will work closely with prospective clients to understand their needs, educate them on Native Teams' solutions, and guide them through the decision-making and onboarding process. Your goal is to acquire new customers and expand revenue within assigned markets and ICPs. Would you like to take on a new challenge in the field of sales in a successful, fast-growing global start-up?

Embedded Systems Engineer (Part-Time to Full-Time) – Optect Ltd Location: Remote (UK-based), onsite in Bath, or hybrid Hours: 0.5 FTE – 1.0 FTE Right to work in the UK required Optect is developing the next generation of long-range flame detection technology and deploying it into some of the most challenging environments on Earth. We are now looking for a motivated Embedded Systems Engineer...

Location: UK, Remote About The Role At Tego Group, we partner with travel platforms, OTAs and ticketing businesses to help them unlock new revenue while offering customers genuine booking flexibility. We’re hiring an Enterprise Account Executive to help us originate, close and scale B2B partnerships across the UK and Europe. This is a hands-on, individual-contributor role designed for...

Senior Account Executive Payments & Risk (Fintech) UK-based (remote-first, with occasional London office use) Territory: Europe-led, global remit £90,000 base + uncapped commission + equity An early-stage, VC-backed fintech is building a next-generation platform using advanced analytics and AI to help payments businesses better understand and manage merchant risk. The business is small,...

About Djaayz Co-founded by Cathy Guetta, Djaayz is a DJ booking platform built specifically for the hospitality industry: hotels, restaurants, bars, beach clubs, clubs, and corporate events. We streamline everything — DJ selection, booking, payments, invoicing, and scheduling — with a network of 13,000+ DJs across France and the UK. Djaayz already works with hospitality groups, premium...

About Revolut People deserve more from their money. More visibility, more control, and more freedom. Since 2015, Revolut has been on a mission to deliver just that. Our powerhouse of products — including spending, saving, investing, exchanging, travelling, and more — help our 65+ million customers get more from their money every day. As we continue our lightning-fast growth, 2 things are...

Location: UK, Remote About The Role At Tego Group, we partner with travel platforms, OTAs and ticketing businesses to help them unlock new revenue while offering customers genuine booking flexibility. We’re hiring a Business Development Manager to help us originate, close and scale B2B partnerships across the UK and Europe. This is a hands-on, individual-contributor role designed for...