Senior Backend Engineer

Senior Backend Engineer

Location: On-site in New York City New York (relocation required if not local)
Work Setup: Office-first environment - in-person most days during the week
Visa Sponsorship: Not available

Role Summary

We are hiring multiple Senior Backend Engineers to design and build high-throughput low-latency backend systems for a new privacy-focused product line serving demanding enterprise and institutional customers. You will work on greenfield architecture take systems from 01 and own critical infrastructure that must be highly reliable secure and performant.

What Youll Do

• Design build and scale high-performance fault-tolerant backend services that handle significant request and data volumes.
• Own large-scale multi-tenant distributed systems with a strong focus on correctness reliability and clear SLOs.
• Collaborate closely with mobile and frontend teams to define and maintain robust API and SDK boundaries.
• Build durable highly available data and caching layers using technologies such as PostgreSQL Redis and NATS (or similar tools).
• Lead development of core enterprise capabilities including SSO SCIM provisioning and secure data import/export flows.
• Partner with security and infrastructure engineers to harden production systems and align them with a stringent threat model.

Qualifications

• 3 years of experience building and operating high-throughput distributed backend systems in production.
• Strong systems engineering background with a proven track record of owning critical services end-to-end (design through operations).
• Proficiency in at least one of the following systems languages: Rust Go or C/C with willingness to work primarily in a systems language.
• Experience taking systems from concept to production (01) in fast-paced environments (early-stage startup or high-growth teams).
• Deep focus on reliability observability performance and long-term maintainability.

Nice to Have

• Experience with privacy-tech secure messaging or cryptographic / end-to-end encrypted systems.
• Background working on products with strict security compliance or regulatory requirements (e.g. government fintech or critical infrastructure).
• Prior experience in early-stage companies (Seed - Series B) helping set technical direction.

Team & Culture

Youll join a small senior engineering team where every engineer has significant product and architectural ownership. The culture values integrity deep curiosity about technology and long-term craftsmanship over short-term optimization. We are motivated by building privacy-preserving systems that meaningfully raise the bar for security and reliability.

Compensation

• Competitive cash compensation at the upper end of the market for senior backend engineers in this geography.
• Meaningful equity in a high-growth early-stage company.

Why This Is a Great Opportunity

We have just raised one of the largest Seed rounds in tech backed by major VCs. This is a rare opportunity to join an early-stage company at the ground floor and play a foundational role in building mission-critical privacy-first infrastructure for enterprise and institutional customers.

Required Skills:

RustGoC