Jack & Jill
Technical Co-Founder (+ Equity) at Antler
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Job Title
Technical Co-Founder
Salary
Not Disclosed + Equity
Company Description
Antler is the global early-stage VC backing Demi, an AI-native ecommerce startup founded by a former Antler Associate Partner and Goldman Sachs alumna.
Job Description
Demi is an AI-native ecommerce company rethinking how brands grow online. We are looking for a Technical Co-Founder to build this from zero. You will own the entire technical direction—architecture, infrastructure, and product delivery—partnering with a commercially-driven co-founder to disrupt legacy ecommerce systems using agentic AI and advanced automation.
Location
London, UK
Why this role is remarkable
- Join as an equal co-founder with full ownership of the technical roadmap and the opportunity to build an AI-native ecommerce platform from scratch.
- Backed by Antler’s global venture network, providing immediate access to funding, high-level mentorship, and a powerful community of founders and investors.
- Partner with a co-founder who brings deep expertise from Goldman Sachs and Antler, specializing in startup inception, fundraising, and commercial strategy.
What You Will Do
- Lead the end-to-end development of the core product, making critical architectural decisions and shipping high-quality code in a fast-paced, pre-product environment.
- Architect and implement AI-native workflows, agentic systems, and data infrastructure that provide a competitive edge over legacy ecommerce platforms.
- Scale the company from a two-person team to a high-performance engineering organization, setting the technical culture and hiring future engineering talent.
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The ideal candidate
- Exceptional backend engineering professional with a proven track record of shipping complex, successful products in ecommerce, AI/ML, or marketplace environments.
- Demonstrates a builder mentality with high agency, comfortable taking intelligent risks and iterating rapidly based on direct customer feedback.
- Possesses founder-level hunger and commercial curiosity, ready to commit to a long-term partnership and build a category-defining company from the ground up.
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.
Get help with your application
Your very own career expert that helps elevate your application to the next level.
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.
How does this work?
- Jack's an AI agent for job searching and career coaching. He works for you.
- Jill is the AI recruiter working for the company. She recruits from Jack's network.
- If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives.
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.
“It took my CV and asked me questions relevant to understanding what kind of jobs to suggest for me. Suggestions were almost perfect. Jobs were exactly what I’ve been looking for.”
Jessica, London
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