Company: Jack & Jill
Location: London
Job Description:
Jack & Jill is seeking a founding engineer to own the entire technical stack for a mobile-first fitness platform. You will ship fast in an AI-assisted environment, make architectural decisions, and work closely with a founder and fractional CTO to turn insights into high-impact product.
You will own a greenfield project, choose the tech stack, and shape architecture with autonomy. This is London-based, equity-backed, and designed for ambitious individuals ready to move fast.
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Posted: August 7th, 2026