Full-stack Engineer (£90,000 + Equity) at Second Brain AI

This is a job that Jill is helping to recruit for on behalf of one of our customers. To apply, speak to Jack

Job Title: Full-stack Engineer

Salary: £90,000 + Equity

Company Description: Second Brain AI - VC-backed AI platform

Job Description: Join Second Brain AI as a Full-stack Engineer to build and own the core dashboard and user interfaces for our innovative AI platform. This high-impact role involves designing and implementing critical features, from metric views and Q&A interfaces to authentication and user access controls, shaping the product's future from day one.

Location: London, UK

Why this role is remarkable:

• Take complete ownership of Synthesis's entire dashboard interface, directly impacting user experience and product direction.
• Work in a fast-paced, high-velocity SaaS environment within a VC-backed AI startup, building something truly novel.
• Enjoy significant autonomy and the opportunity to extend the product into new, exciting surface areas like Project Pulse.

What you will do:

• Build and own Synthesis's entire dashboard interface, including metric views, drill-downs, filters, and saved views.
• Implement essential features such as onboarding, workspace setup, OAuth authentication, and robust user access controls.
• Design and develop the Q&A interface, focusing on input handling, response rendering, and explanation traceability.

The ideal candidate:

• Possesses approximately 6 years of experience in full-stack product engineering, ideally within a high-velocity SaaS environment.
• Demonstrates a proven ability to independently ship production-ready React/Next.js interfaces connected to real APIs and backend logic.
• Exhibits a strong sense of UX, a pragmatic approach to balancing quality and speed, and comfort building with limited support.

How to Apply: To apply for this job, speak to Jack, our AI recruiter.

Step 1. Visit our website

Step 2. Click 'Speak with Jack'. Step 3.

Log in with your LinkedIn profile.

Step 4. Talk to Jack for 20 minutes so he can understand your experience and ambitions.

Step 5. If the hiring manager would like to meet you, Jack will make the introduction.