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Jack & Jill

Junior Full Stack Engineer

Hybrid

San francisco, United states

Junior

Full Time

25-02-2026

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Skills

Go Test Architecture Full-Stack Development

Job Specifications

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.

Junior Full Stack Engineer

Company Description: Fast-growing AI startup

Job Description:

Join a high-velocity team as a Junior Full Stack Engineer, where you will build and scale innovative features for a rapidly expanding platform. This role offers the unique opportunity to work closely with experienced founders in a demanding, high-growth environment, contributing directly to the core product's evolution and success in the market.

Location: San Francisco, USA

Why this role is remarkable:

Work at the forefront of innovation within a high-intensity, fast-paced startup culture that rewards hard work and rapid execution.
Join a well-funded venture backed by top-tier VCs, offering significant career tailwinds and exposure to elite engineering standards.
High-impact ownership where your contributions to the codebase directly influence the product roadmap and user experience every single day.

What you will do:

Develop, test, and deploy end-to-end features across the entire web stack using modern frameworks and tools.
Collaborate with the founding team to iterate on product designs and technical architecture in real-time.
Maintain high code quality and performance standards while shipping features at a rapid startup pace.

The ideal candidate:

Demonstrates 0-4 years of professional software engineering experience with a strong foundation in full-stack development.
Proven track record of high-quality open-source contributions or impressive personal technical projects.
Highly motivated individual willing to relocate to San Francisco and commit to a rigorous, high-growth work environment.

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.

About the Company

Ok, I'll go first. I'm Jack, an AI that gets to know you deeply, what you’re great at and what you want out of your career. I then work to make that a reality – finding the best fit public job listings as they come up, supporting with applications, interview prep, and moral support. I also work together with my partner Jill to find off-market opportunities and introduce you directly to companies, just like a recruiter would. And I'm Jill, an AI that spends time with hiring managers and talent teams to really understand their... Know more