At a Glance
- Tasks: Build AI-powered solutions to modernise government workflows and tackle global planning challenges.
- Company: Xylo, a London-based startup revolutionising government software with AI.
- Benefits: Competitive salary, equity options, and the chance to shape a generational company.
- Other info: Collaborate with a high-calibre founding team and influence engineering culture.
- Why this job: Join as the first engineer and make a real impact on critical infrastructure projects.
- Qualifications: 3+ years as a full-stack engineer, expert in React and TypeScript.
The predicted salary is between 100000 - 150000 £ per year.
Xylo is a London-based startup modernizing government software with AI to replace legacy systems. Founded by experienced leads from Marshmallow, Cytora, and successful construction‑tech founders, they are tackling the trillion‑dollar global planning crisis to accelerate housing, energy, and infrastructure projects across the UK and US markets.
As the first individual contributor engineer at Xylo, you will work alongside veteran founders to architect and build AI‑powered solutions that automate complex government workflows. You'll ship end‑to‑end features using a modern stack including React and AI agents, directly impacting how critical infrastructure projects are approved and delivered across the globe.
Location: London, UK
Why this role is remarkable:
- Join as the first IC hire with significant autonomy to shape the technical architecture and product direction of a generational company.
- Work on a trillion‑dollar problem where your code directly reduces years of bureaucratic backlogs in housing and green energy infrastructure.
- Collaborate with a high‑pedigree founding team including a 2x founder and former engineering leads from scale‑ups like Marshmallow and Cytora.
What You Will Do:
- Build and deploy end‑to‑end features and AI agents that autonomously gather evidence and cross‑reference thousands of planning data sources.
- Collaborate directly with government users to translate complex regulatory requirements into intuitive, durable workflows and human‑in‑the‑loop interfaces.
- Influence every aspect of the engineering culture, from selecting tools to establishing high‑velocity shipping standards using AI‑assisted development.
The ideal candidate:
- You have 3+ years of experience as a full‑stack engineer shipping production‑grade products, ideally within a fast‑paced startup environment.
- You are an expert in React and TypeScript and are comfortable working with tools like Supabase, AWS, and AI orchestration frameworks.
- You possess a founder mindset and a deep curiosity for solving user problems, particularly those involving complex LLM‑driven agents and workflows.
Founding Engineer (£100k-£150k + Equity) at Xylo employer: Jack & Jill
Xylo is an exceptional employer, offering a unique opportunity to be the first individual contributor engineer in a pioneering startup that is revolutionising government software with AI. Located in London, employees benefit from a collaborative work culture, significant autonomy in shaping product direction, and the chance to tackle impactful challenges in housing and infrastructure, all while working alongside a highly experienced founding team. With competitive salaries and equity options, Xylo fosters an environment of growth and innovation, making it an attractive place for those seeking meaningful and rewarding employment.
StudySmarter Expert Advice🤫
We think this is how you could land Founding Engineer (£100k-£150k + Equity) at Xylo
✨Get Involved in Startup Events
Dive into the local startup scene! Attend pitch nights, hackathons, and networking events. It's a great way to meet founders and like-minded folks. Plus, you never know who might put in a good word for you at a startup like Jack & Jill!
✨Show Off Your Creativity
Startups love unique ideas! Create a portfolio or a personal website showcasing your past projects, especially those relevant to startups. This personal touch can really make you stand out when you're applying for that full-time gig at Jack & Jill.
✨Leverage Startup Communities Online
Get active on platforms such as Indie Hackers, Startup Grind, or even LinkedIn groups focused on startups. Participating in discussions can increase your visibility and open up potential job leads, especially at buzzing companies like Jack & Jill.
✨Direct Applications are Your Best Bet
Don't shy away from applying directly through our website. Startups often check their own portals first before other job sites. Tailor your application to show how you can add value to Jack & Jill — a personal touch goes a long way!
We think you need these skills to ace Founding Engineer (£100k-£150k + Equity) at Xylo
Some tips for your application 🫡
Show Your Entrepreneurial Spirit:When applying for a role in startups and entrepreneurship, it's crucial to highlight any experience you have with starting your own projects or businesses. We love seeing examples of your initiative, so sprinkle in stories of how you’ve taken risks or solved problems creatively—this is what makes you stand out!
Tailor Your CV for Impact:In the startup world, your CV should reflect not just your experience, but the impact you've made. Use quantifiable achievements to show your contributions, like percentage increases in growth or revenue. Remember, we’re looking for go-getters who know how to get results!
Craft a Provocative Cover Letter:Your cover letter is a chance to showcase your passion and motivation for working at Jack & Jill. Don't just list your skills—share your vision and what excites you about the entrepreneurial journey. Connect your personal aspirations with what we need, and let your enthusiasm shine through!
Keep Your Portfolio Handy:If you have a portfolio showcasing any past projects or entrepreneurial efforts, definitely mention it in your application. Though not always necessary for full-time roles, it can provide us with deeper insights into your work style and creativity. If you have a blog, products, or any innovation, we'd love to see it!
How to prepare for a job interview at Jack & Jill
✨Show Your Entrepreneurial Spirit
In startups, they love seeing passion and initiative. Be ready to share any personal projects or ideas you've worked on. This shows you’re not just about the 9-to-5, but you’re invested in creating value, which is key in this fast-paced environment.
✨Brush Up on Your Problem-Solving Skills
Expect to be thrown some curveballs during the interview—startups often face unexpected challenges. Having a couple of examples up your sleeve where you’ve creatively solved problems will really impress them. It's all about how you think on your feet!
✨Know Your Stuff About the Industry
Since you're applying for a full-time role, they’ll want to see you've done your homework. Make sure you understand where the startup stands in its industry, including competitors and market trends. It’s a great way to show you're genuinely interested and can contribute from day one.
✨Show Flexibility and Adaptability
Startups can pivot quickly, so highlight your adaptability. Share examples of when you've successfully navigated change or taken on roles outside your comfort zone. This shows you’re ready for whatever comes your way, which is crucial in a startup atmosphere!
