This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers.
She will pick the best candidates from Jack's network
The next step is to speak to Jack.
Job Title: Staff Fullstack Product Engineer
Company Description: Gizmo.ai - AI-powered learning platform backed by $22M Series A
Job Description:
Join a high-velocity team of four engineers building the "Duolingo for anything." As a Staff-level individual contributor, you will own the technical foundation of a platform serving 1.7M monthly users. Reporting to the CTO, you'll scale backend systems and design features like spaced repetition to help a billion people learn through gamification.
Location: London, UK
Why this role is remarkable:
Massive scale and traction: You will be one of the earliest employees at a startup already generating $5M ARR with 1.7 million monthly active users.
Significant capital backing: Influence the future of education with the resources of a recent $22M Series A round from top-tier leading investors.
Founding-level autonomy: Work directly with the Co-Founder/CTO in a flat structure where you own features from architectural concept to production deployment.
What you will do:
Design and scale the high-performance backend services and APIs that power the core learning experience across web and mobile platforms.
Integrate advanced product capabilities including AI-driven personalization, social mechanics, and spaced repetition algorithms to drive user engagement.
Collaborate across the full stack to ship seamless features, supporting frontend codebases and technical planning to maintain high engineering standards.
The ideal candidate:
Expert-level fullstack fundamentals with a heavy backend focus and a proven track record of shipping complex, consumer-facing product features.
Strong proficiency in SQL and experience with Python or TypeScript; you are comfortable standardizing a growing stack on TypeScript and modern infrastructure.
A "maker" mindset with previous startup or founding experience, driven by moving the needle on business-critical metrics and user impact.
Who are Jack & Jill?
Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.
Next steps
Step 1. Visit our website.
Step 2. Click 'Talk to Jack'.
Step 3. Talk to Jack so he can understand your experience and ambitions.
Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role.
Step 5. If Jill thinks you're a great fit and her client wants to meet you, they will make the introduction.
Step 6. If not, Jack will find you excellent alternatives. All for free.
We never post fake jobs
This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network.
Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description.
We appreciate this can make them look a bit suspect, but there isn't much we can do about it.
Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.
