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For Companies At a Glance
- Tasks: Build innovative financial ops solutions with autonomous AI for the fintech market.
- Company: Join a pre-seed startup led by experienced founders targeting a $100B market.
- Benefits: Competitive salary, significant equity, and the chance to shape company culture.
- Why this job: Be part of a groundbreaking venture and make a real impact from day one.
- Qualifications: Senior Engineer with experience in early-stage product development and LLMs.
- Other info: Fast-paced environment with full ownership of your projects and rapid iteration.
The predicted salary is between 95000 - 120000 £ per year.
A pre-seed, founder-led startup is seeking a Founding Engineer to build the "Agentic Financial Ops" layer for the global fintech market. While others build simple chatbots, this stealth-mode venture is embedding autonomous AI agents directly into major B2B platforms—automating invoicing, bill pay, and payroll for SMBs. This is an opportunity to join at the ground floor of a company targeting a $100B market shift.
What you will build:
- The Engine: A white-label, API-first, multi-tenant system designed to embed cleanly and securely into partner ecosystems.
- The Intelligence: You aren’t just calling APIs; you are treating LLMs as infrastructure. You will build agentic workflows that handle complex financial operations autonomously.
- The Foundation: You will replace the founder’s initial "vibe-coded" prototype with a robust, production-ready architecture. You decide the stack; you set the engineering culture.
The Founders:
- The Commercial Engine: A domain expert and "straight talker" (formerly VPs at a successful embedded finance scale-up). They have already secured signed contracts across the UK, US, and Europe—and early revenue—before the API is even live. They bring the pipeline, the deep market knowledge, and the capital; you bring the product.
The Role:
- Zero to One: Take the product from MVP concept to Production.
- Full Ownership: Build the core platform end-to-end (Backend, APIs, Frontend).
- Architecture: Design for security, permissions, and scale from day one.
- Speed: Iterate fast with real customers. The goal is to launch the API in Q2.
This is not a ticket-taking role at a stagnant SaaS. This is a Decide + Build + Own seat where you sit directly beside the founder.
The Profile
- Mindset: Scrappy, high-growth, and product-minded. You care deeply about why a feature exists, not just how it’s built.
- Experience: A Senior Engineer (Backend-leaning or Full-stack) who has shipped early-stage products into production.
- Tech: Hands-on experience with LLMs & agentic workflows. You are pragmatic about tech choices that optimize for speed and correctness.
The Offer: Salary £95k–£120k + Significant Founding Equity.
Founding Engineer in Slough employer: numi
Contact Detail:
numi Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Founding Engineer in Slough
✨Tip Number 1
Network like a pro! Reach out to people in the fintech space, especially those who are already in startups. Use platforms like LinkedIn to connect and engage with them—ask questions, share insights, and show your passion for building innovative solutions.
✨Tip Number 2
Showcase your skills through projects! Build a portfolio that highlights your experience with LLMs and agentic workflows. Share your work on GitHub or personal websites, and don’t forget to include any relevant side projects that demonstrate your ability to take ideas from concept to production.
✨Tip Number 3
Prepare for interviews by understanding the company’s vision and the market they’re targeting. Be ready to discuss how you can contribute to their mission of automating financial operations. Tailor your responses to reflect your scrappy, high-growth mindset and your passion for product development.
✨Tip Number 4
Apply directly through our website! It’s the best way to ensure your application gets seen. Plus, it shows you’re genuinely interested in being part of our journey. Don’t hesitate—take that leap and let us know why you’re the perfect fit for this exciting role!
We think you need these skills to ace Founding Engineer in Slough
Some tips for your application 🫡
Show Your Passion: When writing your application, let your enthusiasm for fintech and AI shine through. We want to see that you’re not just looking for a job, but that you’re genuinely excited about building something groundbreaking with us.
Tailor Your Experience: Make sure to highlight your relevant experience in building products from scratch. We’re looking for someone who can take our MVP to production, so share specific examples of how you've done this before.
Be Clear and Concise: Keep your application straightforward and to the point. We appreciate clarity, so avoid jargon and focus on what makes you a great fit for the role. Remember, we want to understand your thought process and skills quickly!
Apply Through Our Website: Don’t forget to submit your application through our website! It’s the best way for us to keep track of your application and ensure it gets the attention it deserves. We can’t wait to hear from you!
How to prepare for a job interview at numi
✨Know Your Tech Stack
Make sure you’re well-versed in the tech stack mentioned in the job description. Brush up on your experience with LLMs and agentic workflows, as these will be crucial for the role. Be ready to discuss how you've used these technologies in past projects.
✨Show Your Problem-Solving Skills
Prepare to share specific examples of how you've tackled complex problems in previous roles. This startup is looking for someone who can think on their feet and come up with innovative solutions, so highlight your scrappy mindset and ability to iterate quickly.
✨Understand the Market
Familiarise yourself with the fintech landscape, especially the B2B sector. Knowing the challenges and opportunities in this space will help you demonstrate your market knowledge and show that you're not just a techie but also a strategic thinker.
✨Cultural Fit Matters
Since you'll be working closely with the founders, it's essential to convey that you align with their vision and values. Be prepared to discuss how you would contribute to building the engineering culture and what 'ownership' means to you in a startup environment.
