At a Glance
- Tasks: Own the product end-to-end and develop AI-powered workflows.
- Company: Join a pioneering company in AI-native cybersecurity with top-tier investors.
- Benefits: Competitive salary, meaningful equity, and relocation support available.
- Other info: Fast-paced environment with high ownership and direct access to founders.
- Why this job: Make a real impact on cutting-edge AI and cybersecurity challenges.
- Qualifications: Strong full-stack experience with TypeScript, React, and Node.js required.
The predicted salary is between 80000 - 98000 £ per year.
About the Offer
Our Client is building the world's first AI-native cybersecurity operating system. As increasingly capable AI systems become part of critical infrastructure, security challenges are evolving faster than traditional solutions can keep up. Our Client is developing next-generation defensive systems powered by AI-native architectures, advanced research, and novel approaches including LLM Zero Knowledge Verifiers (ZKVs). Backed by leading investors including Entrepreneur First and the Sequoia Scout Fund, alongside strategic angels from companies such as Meta, Palantir, Isomorphic Labs, Asana, Samsara, and Astranis, the company is building from offices in London and San Francisco.
Location: London, United Kingdom (On-site)
Employment Type: Full-Time
Level: Mid-Senior
Compensation: Competitive Salary + Founding Equity
Relocation Support: Available for Candidates with Work-Permit
What You'll Do
- Own the Product End-to-End; Build and maintain the full product experience
- Develop frontend, backend, and AI-powered workflows
- Design scalable, secure, and reliable systems
- Shape product architecture and engineering standards
- Full-Stack Development; Build modern web applications using TypeScript and React
- Develop backend services using Node.js
- Design and maintain developer-friendly APIs
- Ensure security, performance, and reliability across the platform
- AI Product Development; Collaborate closely with AI engineers
- Integrate AI and LLM capabilities into production products
- Transform research outputs into customer-facing functionality
- Explore how AI-generated code and autonomous systems fit into enterprise environments
- Enterprise Platform Engineering; Build secure systems suitable for enterprise deployment
- Support compliance and security requirements
- Improve platform scalability and reliability
- Design infrastructure capable of supporting long-term growth
Requirements
- Strong full-stack engineering experience
- Deep expertise with TypeScript, React, and Node.js
- Experience designing and building RESTful APIs
- Experience shipping production-grade software
- Strong architectural and product thinking
- Experience working in fast-moving startup environments
- Comfort operating with significant ownership and autonomy
Preferred Experience
- AI or LLM product integrations
- OpenAI, Anthropic, or similar production AI systems
- Cybersecurity or enterprise SaaS environments
- Cloud infrastructure experience (Azure, AWS, or GCP)
- Docker and containerized deployments
- CI/CD pipelines and GitHub Actions
- Terraform or Infrastructure as Code
- Rust experience
- Previous founding engineer experience
Ideal Candidate Profile
We are looking for engineers who:
- Think like product owners
- Use AI tools extensively in their development workflow
- Have strong opinions on architecture and software design
- Enjoy working directly with customers and founders
- Thrive in high-ownership environments
- Prefer building over maintaining
- Move quickly while maintaining quality
What We Offer
- Competitive compensation package
- Meaningful founding equity
- Direct access to founders and leadership
- High-impact ownership from day one
- Opportunity to work on cutting-edge AI and cybersecurity problems
- Fast-moving, high-performance environment
- Ability to influence both product and technical strategy
If you're excited about building AI-native cybersecurity products, owning systems end-to-end, and helping define the future of AI security infrastructure, we'd love to hear from you...
Mid-Senior Founding Full-Stack Product Engineer | London, On-site in Oxford employer: Cross Border Talents
Our Client is an exceptional employer, offering a dynamic work environment in London where innovation meets cutting-edge technology. With a focus on AI-native cybersecurity, employees enjoy competitive compensation, meaningful equity, and the opportunity to work closely with founders and leadership, fostering a culture of high ownership and impact. The company prioritises employee growth through direct involvement in shaping product and technical strategies, making it an ideal place for those looking to make a significant contribution in a fast-paced startup atmosphere.
