startup jobs in Hemel Hempstead

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

🚨 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...

🌍 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...

Role: DevOps Platform Engineer Leeds, West Yorkshire (Hybrid) Salary: £40,000–£48,000 + pension + performance bonus This is a standout opportunity for a DevOps Engineer passionate about IoT and eager to work across high‑impact sectors including energy, aerospace, manufacturing, and nuclear. You’ll take a proven product and help roll it out, optimise it, and evolve it as we onboard more customers...

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 lead the creation of a high-impact startup from the ground up within a world-class venture building environment. Leveraging your advanced technical expertise in full-stack development and machine learning, you will identify critical market problems, build innovative prototypes, and assemble a founding team to scale a category-defining company.

You will design, build, and deploy production‐grade models using energy‐market data, asset telemetry, weather data, settlement data, and commercial datasets. This role is central to the evolution of our pricing, risk, trading, and optimisation engines.

You will collaborate closely with engineering, product, and commercial teams and work with a high degree of autonomy.

You will get the chance to support the creation of our batteries from concept and R&D through to manufacture and test, contributing to all areas of the business from your first day. Applicants from all backgrounds are welcome - we are an equal opportunities employer.

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...

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,...

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...

Compiler Engineer Location: Remote (UK / EU) Working Model: Fully Remote The Company Spectral Compute is a deep-tech startup building compiler technology that enables portable, high-performance GPU computing across diverse hardware platforms. Their work removes vendor lock-in by allowing existing CUDA applications to run efficiently across different GPU and accelerator architectures, solving...

You will be working closely with the Machine Learning team; however, you are not required or expected to have background in Machine Learning. This is an applied role, and we are looking to hire a software engineer with experience in cloud computing and distributed systems. In this role, you will:

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,...

Engineering Leader | AI-Native B2B SaaS | London (Hybrid) Package: £150,000-£200,000 + meaningful equity Location: London (hybrid, in-person collaboration encouraged) bloom has partnered with a high-growth, AI-native B2B SaaS startup that's rethinking how modern teams operate in one of the most fundamental areas of business. Already revenue-generating and scaling fast, the company is set to...

Founding Sales Engineer High-Growth Cyber Security Startup 📍 Location: United Kingdom (Remote) 💰 Compensation: £80,000 - £85,000 Base, + Bonus (Uncapped) + Strong Equity We’re hiring a Founding Sales Engineer to join a rapidly growing cybersecurity organisation and play a critical role in how customers evaluate, adopt, and succeed with a modern security platform. This role sits at the...

SOFTWARE ENGINEER REMOTE (OPTION TO RELLOCATE) £110K + EQUITY THE COMPANY This innovative AI startup is redefining safety and reliability in AI models. While competitors like GPT and DeepMind struggle with hallucinations and illegal content generation, this company adds safety control layers to ensure AI outputs are trustworthy and compliant. Working with high-profile, they’re building AI...

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. Want to take your sales career to the next level? Look no further...

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...