Founding Engineer ( Rust Financial Infrastructure New York)

Join; New York (NY); Hybrid; USD 180,000 - 260,000; Full time

Job summary

Join is seeking a Founding Engineer to take co-founder-level ownership of the technical vision and help build an on-chain institutional FX hedging platform from the ground up.

Based in New York, the role offers hybrid work, high autonomy, and the opportunity to shape core infrastructure and security in a bold early-stage startup.

Qualifications

• Expert-level Rust proficiency required.
• Background in finance, trading, or core infrastructure.
• Former founder/CTO/founding engineer.
• Experience building AI agents / agentic orchestration.
• Willing to relocate to NYC.
• DevOps experience is a strong plus.

Skills

Expert-level Rust

Finance/trading/infrastructure

Founding/CTO/founding engineer

AI agents / agentic orchestration

Relocate to NYC

DevOps experience

Tools

DevOps

Job description

Tasks

New York, USA | Hybrid | Permanent

We are looking for a Founding Engineer to take co-founder-level ownership of the technical vision and help build an on-chain institutional FX hedging platform from the ground up.

Key Requirements

• Expert-level Rust — MUST
• Strong experience in financial, trading, or core infrastructure
• Former Founder / CTO / Founding Engineer
• Experience building and shipping with AI agents / agentic orchestration
• Comfortable working in a highly ambitious, early-stage startup environment
• Willing to relocate to NYC
• Experience with DevOps is a strong plus

Requirements

Ideal Background

We are particularly interested in engineers with experience in:

• Derivatives margin & netting
• Trading infrastructure / HFT
• Clearing infrastructure
• DCO / DCM infrastructure
• Protocol security / smart contract security
• DeFi
• Kernel / Compiler / Operating Systems
• Physics engines

Strong Candidate Profiles

Examples include engineers who have worked on:

• Core financial infrastructure
• Trading systems and exchange infrastructure
• Derivatives and risk systems
• Clearing, settlement and market infrastructure
• High-performance Rust systems
• Protocol security and infrastructure

Must-have: Expert-level Rust experience + previous founder, CTO, or founding engineer experience.