Founding Engineer (£60k-£90k + Equity) at Blackbird-backed AI-native fintech startup
Founding Engineer (£60k-£90k + Equity) at Blackbird-backed AI-native fintech startup

Founding Engineer (£60k-£90k + Equity) at Blackbird-backed AI-native fintech startup

Full-Time 60000 - 90000 £ / year (est.) No home office possible
J

At a Glance

  • Tasks: Build and architect an AI-native fintech system, transforming financial advisory processes.
  • Company: Exciting Blackbird-backed startup revolutionising the fintech landscape.
  • Benefits: Competitive salary, equity options, and mentorship from industry leaders.
  • Other info: Experience unparalleled growth opportunities and influence as a founding engineer.
  • Why this job: Join a dynamic team and shape the future of finance with cutting-edge technology.
  • Qualifications: Proven coding skills in fast-paced environments and a passion for AI development.

The predicted salary is between 60000 - 90000 £ per year.

Blackbird-backed AI-native fintech startup transforming financial advisory systems.

As the Founding Engineer, you will establish the foundational software architecture for an AI-native system of record replacing legacy 1990s software. You’ll own the entire codebase, building end-to-end features across web and mobile platforms. This high-impact role shifts financial advisers from manual tasks to AI-powered reviewers, directly influencing the product roadmap.

Location: London, UK

Why this role is remarkable:

  • Join a pre-seed powerhouse with $2.7M raised from Blackbird (the largest investor in Canva) and experience explosive 45% month-over-month adoption.
  • Unparalleled architectural freedom and influence as a founding team member, working directly with founders to shape the engineering culture and technical vision.
  • Dual growth pathways allowing you to choose between a Principal Engineer or Engineering Leadership track with direct mentorship from experienced operators.

What You Will Do:

  • Architect and build core product features end-to-end using React Native, .NET Core, and Supabase, with a heavy emphasis on AI-native workflows.
  • Develop rich AI-powered interfaces including chat, tool-calling flows, and real-time streaming responses using LLMs like Anthropic and OpenAI.
  • Manage the full mobile and web lifecycle, from building native audio recording modules to owning the CI/CD pipeline and release deployments.

The ideal candidate:

  • Exceptional full-stack or backend coding talent with a proven track record of shipping production-ready applications in fast-paced startup environments.
  • Power user of modern AI development tools for architecting and debugging, with a deep curiosity for optimizing LLM performance and UX.
  • Detail-oriented builder who thrives in ambiguity, prioritizes in-person collaboration in London, and possesses the business acumen to translate user needs into code.

Founding Engineer (£60k-£90k + Equity) at Blackbird-backed AI-native fintech startup employer: Jack & Jill

As a Blackbird-backed AI-native fintech startup, we offer an exceptional opportunity for Founding Engineers to shape the future of financial advisory systems in London. Our dynamic work culture fosters innovation and collaboration, providing unparalleled architectural freedom and direct mentorship from experienced operators. With competitive salaries, equity options, and dual growth pathways, we are committed to your professional development and success in a rapidly evolving industry.
J

Contact Detail:

Jack & Jill Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Founding Engineer (£60k-£90k + Equity) at Blackbird-backed AI-native fintech startup

Tip Number 1

Network like a pro! Reach out to people in the fintech and AI space, especially those connected to Blackbird. Attend meetups or online events to make connections that could lead to job opportunities.

Tip Number 2

Show off your skills! Create a portfolio showcasing your projects, especially those involving React Native or AI. This will give potential employers a taste of what you can do and how you think.

Tip Number 3

Prepare for technical interviews by brushing up on your coding skills and understanding AI workflows. Practice common coding challenges and be ready to discuss your past projects in detail.

Tip Number 4

Apply through our website! It’s the best way to ensure your application gets seen. Plus, we love seeing candidates who take the initiative to connect directly with us.

We think you need these skills to ace Founding Engineer (£60k-£90k + Equity) at Blackbird-backed AI-native fintech startup

React Native
.NET Core
Supabase
AI-native workflows
Full-stack Development
Backend Development
CI/CD Pipeline Management
Production-ready Application Shipping
AI Development Tools
LLM Performance Optimisation
User Experience (UX) Design
Collaboration Skills
Business Acumen
Problem-Solving Skills

Some tips for your application 🫡

Tailor Your CV: Make sure your CV reflects the skills and experiences that align with the Founding Engineer role. Highlight your full-stack or backend coding talent, especially any experience with React Native, .NET Core, and AI development tools.

Craft a Compelling Cover Letter: Use your cover letter to tell us why you're excited about joining our AI-native fintech startup. Share your passion for transforming financial advisory systems and how you can contribute to shaping our engineering culture.

Showcase Your Projects: Include links to your previous projects or GitHub repositories that demonstrate your ability to build production-ready applications. We love seeing real examples of your work, especially if they involve AI-powered features!

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 & Jill

Know Your Tech Stack

Make sure you’re well-versed in React Native, .NET Core, and Supabase. Brush up on your knowledge of AI-native workflows and be ready to discuss how you've used these technologies in past projects. This will show that you’re not just a coder but someone who understands the architecture behind the software.

Showcase Your Problem-Solving Skills

Prepare to discuss specific challenges you've faced in previous roles, especially in fast-paced environments. Think about how you’ve optimised performance or improved user experience with AI tools. This is your chance to demonstrate your ability to thrive in ambiguity and deliver results.

Understand the Company Vision

Research Blackbird and their investment philosophy, especially in relation to fintech and AI. Be ready to articulate how your skills align with their mission to transform financial advisory systems. Showing that you’re aligned with their vision can set you apart from other candidates.

Ask Insightful Questions

Prepare thoughtful questions about the company’s culture, the engineering team’s dynamics, and the future roadmap of the product. This not only shows your interest but also helps you gauge if this is the right fit for you. Remember, interviews are a two-way street!

Founding Engineer (£60k-£90k + Equity) at Blackbird-backed AI-native fintech startup
Jack & Jill

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