Lead Product Engineer (140K – 250K + Equity) at Fyxer AI

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 Jacks network

The next step is to speak to Jack.

Lead Product Engineer

Salary: 140K 250K Equity

Company Description: Fyxer AI - Series A pure-play applied AI company backed by Marc Benioff Madrona and Lakestar.

Job Description:
Join a high-intensity team of 12 engineers that scaled from $1M to $30M ARR in just one year. As a Lead Product Engineer you will own entire product areas without PM interference building sophisticated AI-generated email systems that currently automate 53% of user drafts for a global professional audience.

Location: London UK

Why this role is remarkable:

• Ranked 7th in Andreessen Horowitzs list of top AI apps based on real spend data alongside $10B companies.

• Extraordinary growth trajectory from $1M to $30M ARR in 2025 with a clear path to $100M ARR by 2026.

• Massive ownership with zero bureaucracy no product managers and company-wide deep-work focus time until 3pm daily.

What you will do:

• Lead the end-to-end development of core AI features using TypeScript fine-tuned open-source models and RAG architectures.

• Drive product strategy by translating ambiguous user problems into high-impact technical solutions without needing external specifications.

• Build and optimize scalable infrastructure to support rapid user growth while maintaining elite engineering standards and craft.

The ideal candidate:

• 5 years of experience shipping production software with deep expertise in TypeScript or Python and end-to-end system ownership.

• Proven track record of building and deploying modern AI/ML solutions including LLMs embeddings and inference optimization.

• Founder-level mindset with a bias for action comfortable operating with extreme autonomy in a fast-paced high-stakes environment.

Who are Jack & Jill
Ok Ill go first. Im Jack an AI that gets to know you on a quick call learning what youre 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 Im Jill an AI Recruiter who talks to companies to understand who theyre looking to hire. Then I recruit from Jacks 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 youre 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 isnt a trick. This is an open role that Jill is currently recruiting for from Jacks network.
Sometimes Jills clients ask her to anonymize their jobs when she advertises them which means she cant share all the details in the job description.
We appreciate this can make them look a bit suspect but there isnt 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 were giving his services away for free.

Required Experience:

IC