At a Glance
- Tasks: Lead the development of innovative fintech solutions and architect cutting-edge financial infrastructure.
- Company: Join SYSTM, a VC-backed fintech startup revolutionising cross-border finance.
- Benefits: Receive significant equity, competitive salary, and be part of a dynamic team.
- Other info: Be a key player in a pre-seed startup with excellent growth opportunities.
- Why this job: Shape the future of finance with AI-powered solutions and make a real impact.
- Qualifications: 5+ years in full-stack development with expertise in React/TypeScript and Node.js or Python.
The predicted salary is between 80000 - 100000 £ per year.
Company: SYSTM - VC‑backed fintech building the stablecoin financial OS
As the most critical hire of 2026, you will own the technical architecture of a platform revolutionizing cross‑border finance. Working directly with a founder from Plutus, you will build the infrastructure for stablecoin payments and an AI‑powered Agentic CFO layer, transitioning the product from early design partners to global scale.
Location: London, UK
What you will do:
- Architect and build multi‑currency wallets, stablecoin on/off ramps, and yield optimization infrastructure using Stellar and USDC rails.
- Develop the Agentic CFO layer, implementing LLM‑powered financial intelligence with autonomous action capabilities and observable AI pipelines.
- Lead the development of a high‑performance React/TypeScript merchant dashboard and robust Node.js/Python backend services that meet high compliance standards.
The ideal candidate:
- 5+ years of full‑stack experience with React/TypeScript and Node.js or Python, demonstrating high senior‑level ownership of complex product architectures.
- Proven track record shipping production‑grade AI/LLM features, including agentic workflows, RAG pipelines, or prompt engineering at scale.
- Entrepreneurial background as an early engineer or CTO, ideally with domain expertise in fintech, payments, or blockchain infrastructure like Stellar.
Why this role is remarkable:
- Significant equity stake (1‑5%) in a pre‑seed startup founded by Jasper Tay, the former co‑Founder & CEO of Plutus with a decade of regulated fintech experience.
- You will be the primary technical leader, making build‑vs‑buy decisions and shaping engineering culture as the company closes its funding round.
- Direct exposure to frontier finance, integrating Stellar and USDC with autonomous AI agents to automate treasury management for 25+ signed design partners.
Senior Full-Stack Engineer (+ Equity) at SYSTM employer: Jack and Jill AI
SYSTM is an exceptional employer for Senior Full-Stack Engineers, offering a unique opportunity to shape the future of cross-border finance in a dynamic and innovative environment. With significant equity stakes and direct involvement in pioneering fintech solutions, employees benefit from a collaborative work culture that fosters growth and creativity. Located in London, SYSTM provides access to a vibrant tech scene, ensuring that team members are at the forefront of financial technology advancements while enjoying ample opportunities for professional development.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Full-Stack Engineer (+ Equity) at SYSTM
✨Tip Number 1
Network like a pro! Reach out to folks in the fintech space, especially those who have experience with stablecoins or AI. Use platforms like LinkedIn to connect and engage with industry leaders; you never know who might help you land that interview.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your past projects, especially those involving React, Node.js, or AI features. This will give potential employers a taste of what you can do and set you apart from the crowd.
✨Tip Number 3
Prepare for technical interviews by brushing up on your coding skills and system design principles. Practice common algorithms and data structures, and be ready to discuss your architectural decisions in detail—this is crucial for a senior role!
✨Tip Number 4
Don’t forget to apply through our website! We’re always on the lookout for talented individuals like you. Plus, it’s a great way to ensure your application gets the attention it deserves.
We think you need these skills to ace Senior Full-Stack Engineer (+ Equity) at SYSTM
Some tips for your application 🫡
Show Off Your Skills:Make sure to highlight your full-stack experience with React/TypeScript and Node.js or Python. We want to see how you've owned complex product architectures in the past, so don’t hold back on those details!
Tailor Your Application:Customise your application to reflect our fintech focus. Mention any relevant experience you have with stablecoin infrastructure or AI features, as this will show us you're a great fit for the role.
Be Authentic:Let your personality shine through! We’re looking for someone who can lead and shape our engineering culture, so share your entrepreneurial spirit and any unique insights you have from your previous roles.
Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you don’t miss out on any important updates from our team!
How to prepare for a job interview at Jack and Jill AI
✨Know Your Tech Inside Out
Make sure you’re well-versed in React, TypeScript, Node.js, and Python. Brush up on your experience with multi-currency wallets and stablecoin infrastructure, as these are key to the role. Be ready to discuss specific projects where you’ve implemented similar technologies.
✨Showcase Your Problem-Solving Skills
Prepare to share examples of how you've tackled complex product architectures in the past. Think about challenges you've faced and how you overcame them, especially in fintech or blockchain environments. This will demonstrate your senior-level ownership and entrepreneurial mindset.
✨Understand the Company’s Vision
Research SYSTM and its mission to revolutionise cross-border finance. Familiarise yourself with their use of AI in financial intelligence and be prepared to discuss how you can contribute to this vision. Showing genuine interest in their goals will set you apart.
✨Prepare Questions That Matter
Think of insightful questions to ask during the interview. Inquire about their engineering culture, decision-making processes, and future plans for integrating AI with treasury management. This shows that you’re not just interested in the role, but also in shaping the company’s future.
