Senior Backend Engineer at well-funded AI infrastructure startup

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

Salary

Not Disclosed

Company Description

Well-funded AI infrastructure startup

Job Description

You will architect and build a high-performance enforcement engine that validates AI communications in real-time. Sitting directly in the API layer, this system ensures every message meets regulatory standards for global financial institutions. You will solve complex systems challenges involving low latency and high throughput while shaping the engineering culture of an early-stage team.

Location

New York, USA

Why this role is remarkable

• Join an elite founding team with a track record of scaling multi-billion dollar systems at major technology and financial firms.
• The company is backed by top-tier venture capital firms and is solving a critical compliance bottleneck for AI adoption in regulated industries.
• Own the core architecture of a mission-critical "firewall for AI" that sits in the path of every outbound enterprise message.

What You Will Do

• Design and develop a real-time API enforcement engine capable of processing thousands of personalized communications per second with sub-millisecond latency.
• Build deterministic validation rulepacks that check content against complex global regulatory frameworks including SEC, FINRA, and GDPR standards.
• Collaborate on scaling the distributed system infrastructure to support tier-one financial institutions while maintaining zero tolerance for correctness failures.

The ideal candidate

• Proven track record building distributed systems at high-growth, engineering-forward companies where rigorous backend practices and high-scale traffic are the norm.
• Deep expertise in backend architecture, systems programming, and handling high-throughput production environments where system failures have significant regulatory consequences.
• Entrepreneurial mindset with experience in early-stage environments, comfortable owning complex features end-to-end and defining technical standards 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.

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.