Senior Software Engineer - JTX

Team: Engineering

Location: USA

Workplace Type: remote

About the Position

Were building JTX, a next-generation trading app that brings the speed, power, and sophistication of Solana’s market infrastructure directly to traders. This is a true 0-to-1 product effort focused on creating an experience that serious on-chain traders actually want to use — fast, intuitive, high-performance, and deeply connected to the mechanics of the market itself.

You’ll work alongside the team behind some of the leading infrastructure powering billions in daily transaction value on Solana, translating complex systems and market behavior into a seamless trading experience for users. Whether it’s shaping workflows, refining interfaces, improving execution visibility, or helping define the product from the ground up, this role will have a direct hand in building what trading on Solana looks like next.

If youve spent time thinking about how markets actually work on Solana and want to build the product layer on top of that, this is the role.

What Youll Do

Design and build core systems for our new product from scratch
Build low-latency, high-reliability services that interact directly with Solanas transaction and block building pipeline
Own critical infrastructure: order routing, execution, real-time market data, and position management
Implement security at every layer, from transaction signing to user data protection
Work closely with the product and infrastructure teams to ship fast and iterate based on real user feedback
Make significant architectural decisions as an early member of the team

What Were Looking For

5+ years of software engineering experience, with meaningful time spent on distributed systems
Strong systems programming skills. Rust preferred, but deep experience in C/C++, Go, or similar is fine
Track record building reliable, low-latency systems in production
Security-first mindset. You think about attack surfaces, key management, and failure modes before writing code
Familiarity with Solanas runtime, transaction lifecycle, and market microstructure (MEV, block building, execution quality) is a strong plus
Comfortable operating with high autonomy and incomplete information. This is a 0-to-1 product, not a mature codebase

Relevant Background

If you have experience in any of the following, you may be a good fit:

Trading systems or exchange infrastructure

DeFi protocol engineering

Fintech backend systems (payments, custody, execution)

High-frequency or low-latency systems

Security engineering