Senior Backend Engineer at VC-backed fintech infrastructure startup

jack-jill-external-atsยท Commercial
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๐ŸŒ Remote๐Ÿ“ New YorkFullTime

About this role

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


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Senior Backend Engineer

Company Description: VC-backed fintech infrastructure startup

Job Description:
As a Senior Backend Engineer, you will design and build high-performance infrastructure for a growing financial technology platform. You will work on complex distributed systems, ensuring reliability and scalability while collaborating with a high-caliber technical team. This is a critical role in shaping the core architecture of a platform poised to disrupt modern financial services.

Location: New York City, USA

Why this role is remarkable:

  • Join a high-performance engineering culture where technical excellence and ownership are prioritized from day one

  • Backed by top-tier VCs, providing the stability of a well-funded environment with the high-upside potential of an early-stage venture

  • Work in a dense, collaborative NYC-based team comprised of graduates from world-leading technical institutions

What you will do:

  • Architect and maintain scalable backend services using high-performance languages and modern cloud infrastructure

  • Lead the development of mission-critical features from technical design through to production deployment

  • Optimize system performance and reliability to handle high-throughput financial data processing

The ideal candidate:

  • 2-10 years of professional software engineering experience, preferably within a fast-paced startup or fintech environment

  • Strong academic background with a degree from a top-tier university and a deep understanding of computer science fundamentals

  • Proficiency in systems programming, with a strong preference for Rust or a desire to master it professionally

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.

Frequently Asked Questions

Is the salary disclosed for the Senior Backend Engineer at VC-backed fintech infrastructure startup position at jack-jill-external-ats?
The salary for this Senior Backend Engineer at VC-backed fintech infrastructure startup role at jack-jill-external-ats is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Is the Senior Backend Engineer at VC-backed fintech infrastructure startup job at jack-jill-external-ats remote?
Yes, this Senior Backend Engineer at VC-backed fintech infrastructure startup position at jack-jill-external-ats is remote, with team members based in New York. You can work from home or anywhere in the supported regions.
Is the Senior Backend Engineer at VC-backed fintech infrastructure startup role at jack-jill-external-ats full-time or part-time?
This is listed as a FullTime position. It is posted as a Senior Backend Engineer at VC-backed fintech infrastructure startup role in the Commercial department at jack-jill-external-ats.
Which team or department does the Senior Backend Engineer at VC-backed fintech infrastructure startup at jack-jill-external-ats belong to?
This Senior Backend Engineer at VC-backed fintech infrastructure startup position is part of the Commercial department at jack-jill-external-ats. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Senior Backend Engineer at VC-backed fintech infrastructure startup position at jack-jill-external-ats?
Click the "Apply Now" button on this page. You will be redirected to jack-jill-external-ats's official application portal hosted on ashby where you can submit your application directly.
When was the Senior Backend Engineer at VC-backed fintech infrastructure startup job at jack-jill-external-ats posted?
This Senior Backend Engineer at VC-backed fintech infrastructure startup position at jack-jill-external-ats was posted on Jan 13, 2026. Apply as soon as possible โ€” early applications are often reviewed first.
Senior Backend Engineer at VC-backed fintech infrastructure startup
jack-jill-external-ats
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