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- Tasks: Design and implement APIs for card data lifecycle and collaborate with customers.
- Company: Sequoia-backed payments infrastructure startup with a dynamic team.
- Benefits: Competitive salary, equity options, and a high-trust work environment.
- Other info: Exceptional growth opportunities in a fast-paced, innovative setting.
- Why this job: Join a mission-critical team processing $5B+ annually for top fintechs.
- Qualifications: 3-10+ years in software development with expertise in card networks or tokenization.
The predicted salary is between 70000 - 150000 £ per year.
Join a high‑caliber team of 25 building the encryption layer for global commerce. You will own the card data lifecycle end‑to‑end, designing APIs that power payments for giants like Ramp and Rippling. This is a rare chance to ship mission‑critical infrastructure where security, scale, and developer experience are the primary products.
Location: London, UK
Why this role is remarkable:
- Work at the heart of the payments stack, processing $5B+ in annual volume for the internet's fastest‑growing fintechs and marketplaces.
- Exceptional pedigree with backing from Sequoia, Kleiner Perkins, and Index Ventures, having recently closed a $25M Series B to scale operations 4x.
- True ownership culture where every engineer influences product direction, working with a sophisticated tech stack including Rust and TypeScript in a high‑trust environment.
What You Will Do:
- Design and implement developer‑facing APIs and primitives for card tokenization, 3D Secure, and multi‑PSP orchestration.
- Collaborate directly with customers to understand complex payment stacks and shape the product roadmap based on real‑world friction.
- Own features from problem definition through to production, ensuring sub‑millisecond encryption and high‑availability across distributed systems.
The ideal candidate:
- 3-10+ years of experience shipping high‑quality software, with Senior/Staff candidates showing deep domain expertise in card networks or tokenization.
- Strong fundamentals in systems, networks, and distributed infrastructure with a relentless focus on developer experience and API design.
- A “founder energy” mindset with a bias for action and the ability to operate across the full stack—from backend services to documentation.
Senior / Staff Product Engineer (£70k-£150k + Equity) at Sequoia-backed payments infrastructure[...] employer: Jack & Jill
Contact Detail:
Jack & Jill Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior / Staff Product Engineer (£70k-£150k + Equity) at Sequoia-backed payments infrastructure[...]
✨Tip Number 1
Network like a pro! Reach out to folks in your industry on LinkedIn or at meetups. We all know that sometimes it’s not just what you know, but who you know that can get you in the door.
✨Tip Number 2
Prepare for those interviews! Research the company and its products inside out. We want you to be able to discuss how your skills can directly impact their mission-critical infrastructure.
✨Tip Number 3
Showcase your projects! Whether it's through a portfolio or GitHub, let us see your work. Highlight any experience with APIs, card tokenization, or anything relevant to the role.
✨Tip Number 4
Apply through our website! It’s the best way to ensure your application gets seen. Plus, we love seeing candidates who are proactive about joining our team.
We think you need these skills to ace Senior / Staff Product Engineer (£70k-£150k + Equity) at Sequoia-backed payments infrastructure[...]
Some tips for your application 🫡
Tailor Your CV: Make sure your CV reflects the skills and experiences that align with the Senior/Staff Product Engineer role. Highlight your experience in designing APIs and working with payment systems, as this will show us you understand what we're looking for.
Craft a Compelling Cover Letter: Your cover letter is your chance to tell us why you're the perfect fit for our team. Share your passion for building secure payment infrastructures and how your previous experiences have prepared you for this role. Keep it engaging and personal!
Showcase Your Projects: If you've worked on relevant projects, make sure to include them in your application. We love seeing real-world examples of your work, especially if they involve card tokenization or API design. This gives us insight into your problem-solving skills and creativity.
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’re considered for the role. Plus, it shows us you’re keen on joining our team!
How to prepare for a job interview at Jack & Jill
✨Know Your Tech Stack
Make sure you’re well-versed in the technologies mentioned in the job description, like Rust and TypeScript. Brush up on your knowledge of card tokenization and 3D Secure, as these are crucial for the role. Being able to discuss how you've used these technologies in past projects will show that you're a strong fit.
✨Understand the Company’s Mission
Research the company’s goals and the impact of their products on the payments infrastructure. Be prepared to discuss how your experience aligns with their mission of enhancing security and developer experience. This shows that you’re not just looking for any job, but that you genuinely care about what they do.
✨Prepare Real-World Examples
Think of specific instances where you’ve tackled challenges similar to those described in the job listing. Whether it’s designing APIs or collaborating with customers, having concrete examples ready will help you demonstrate your problem-solving skills and your ability to own features from start to finish.
✨Show Your Founder Energy
Emphasise your proactive mindset and willingness to take ownership of projects. Share stories that highlight your bias for action and how you’ve contributed to product direction in previous roles. This will resonate well with the company culture they’re aiming to build.