startup jobs in Cardiff

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

🌍 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...

🚨 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...

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...

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 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...

Are you a power electronics engineer drawn to the potential of early-stage innovation? We're a stealth-mode startup developing next-gen energy storage systems. We're looking for someone ready to tackle complex, high-power challenges from the ground up. What You'll Do: - Design and prototype advanced power conversion systems for single and three-phase LV grid applications. - Optimise efficiency...

Hybrid - Central London office at least 2 days per week About Ambr AI Ambr AI helps people master difficult workplace conversations using ultra-realistic voice simulations powered by cutting-edge AI. We're a lean, experienced team backed by leading investors and the Google for Startups AI Accelerator, working with some of the biggest & best known companies in the world. We're building...

About Prighter Prighter is a fast-growing LegalTech company building productised services and SaaS solutions for compliance with data protection as well as AI & digital governance regulations. With the mission to enable companies around the world to comply with regulatory requirements for their digital business, our services and SaaS solutions guide our global clients through the increasingly...

Founding AI Engineer – Early-Stage AI Startup (UK/US) We’re partnering with a cutting-edge, VC-backed AI startup that is redefining how businesses leverage artificial intelligence to drive smarter decisions. Their mission: to make enterprise AI accessible, actionable, and transformative, helping companies unlock insights from complex data in real-time. They’re looking for a Founding AI Engineer...

Senior ML & AI Engineer Remote (Bath office 1 day per month) Up to £80,000 About the Role We’re partnered with a fast-growing tech startup focused on how brands and retailers use data. Their AI platform brings together data science, immersive visualisation, and large-scale machine learning to optimise product ranges, plan shopper journeys, and drive smarter commercial decisions. They’re now...

You will be both the hands-on technical lead and the architect of our future technology direction, guiding our software team while setting the foundations for a scalable product and engineering organisation. Working closely with our valuation specialists and product team, you will design solutions that fundamentally transform how valuation advisory services are delivered.

Hands-On CTOs | Meet London's Top Startup Founders in One Night | OPUS x Foundermatcha Event Skip the Job Boards. Meet Founders Directly. You've built products people use. Now it's time to build something that's yours. On February 4th in London, OPUS and Foundermatcha are hosting a Founder ↔ Engineer Speed-Dating Event designed for full-stack engineers who want to join early-stage startups at...

We’re Hiring! Sales Executive With Recruitment/Staffing Sales Experience – UK (Remote) About EiVA HR Solutions EiVA HR is a boutique London-based recruitment and staffi ng company specializing in offshore staffi ng and talent acquisition. We connect top-tier Filipino professionals and talents with global businesses, especially fast-growing startups building high-performing teams. We are...

Want to take your sales career to the next level? Look no further than memoryBlue, the fastest-growing sales development company in B2B tech. With clear pathways to help you climb the ladder and plenty of opportunities for growth, we offer careers, not just jobs. In fact, we promoted 50 team members in just an 18-month timeframe. Who are we? At memoryBlue, we’re more than just a sales...

You will be our First Sales Hire, working directly alongside our Marketing Manager and our Marketing Operations Specialist.

You will need to be a detective and a strategist.

You will research who they are, what their company is facing, and what specific content or assets we have built that would solve a problem for them right now.

Senior Firmware Engineer — AI & Robotics 📍 Location: London, UK (If you like the sound of this role and want to relocate - the Client is willing to help facilitate this move!) 💼 Role: Senior Firmware Engineer ( Permanent Opportunity) 🏢 Industry: AI & Robotics | Humanoid Robotics | Automation A pioneering UK-based AI and robotics company is building the world’s most advanced, commercially...