Skip to main content
Jack & Jill logo

Senior Backend Engineer at Onefootprint.com

Jack & Jill
Full Timesenior
New York, New York, USPosted February 27, 2026

Resume Keywords to Include

Make sure these keywords appear in your resume to improve ATS scoring

JavaGoRust

Sign up free to auto-tailor your resume with all these keywords and get a higher ATS score

Job Description

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: Senior Backend Engineer

Company Description: Onefootprint.com - Series A fintech building global identity infrastructure

Job Description

Join an elite engineering team from Stripe and Robinhood to solve critical challenges in identity verification and fraud detection. You will build high-performance systems for secure data vaulting, cryptography, and automated compliance across 200+ countries. This is an opportunity to own complex infrastructure that balances extreme security with massive scale for millions of users.

Location: New York City, USA

Why this role is remarkable:

  • Solve "hard-tech" problems involving distributed systems, cryptography, and AI-powered fraud engines rather than standard CRUD application development.
  • Join a well-capitalized Series A startup that has raised $19M from top-tier investors, offering the impact of a small team with the stability of significant funding.
  • Work in-person in NYC alongside a high-caliber technical team consisting of former engineers from industry leaders like Stripe, Robinhood, and Brex.

What you will do:

  • Design and implement bulletproof backend systems using Rust and other high-performance languages to handle sensitive identity data at scale.
  • Build and maintain secure data vaulting architecture and distributed fraud detection engines that support millions of global end users.
  • Architect minimal-code integration tools that automate complex KYC, KYB, and biometrics processes for enterprise fintech clients.

The ideal candidate:

  • Possesses 2-10 years of experience building production infrastructure at scale with a degree from a top-tier computer science program.
  • Demonstrates deep expertise in a serious backend language such as Go, C++, or Java, with a strong interest in (or experience with) Rust.
  • Proven ability to handle complex system challenges like security, compliance, or high-scale data processing within a fast-paced startup or fintech 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.

Want AI-powered job matching?

Upload your resume and get every job scored, your resume tailored, and hiring manager emails found - automatically.

Get Started Free