[Hiring] Senior Software Engineer @3iQ

Role Description

The Senior Software Engineer sits at the intersection of exchange connectivity, execution, and market data for 3iQ’s trading technology team. You will own the trading core, including order and execution management, exchange integrations, and market data pipelines, which risk, the ledger, and our client apps all build on. You will be a hands-on builder and an owner: designing, building, deploying, and operating what you ship, sharing in the on-call rotation for systems that trade 24/7, and helping set the technical standard for how we build as we scale.

What Will You Be Doing?

• Design and evolve the core trading architecture for throughput, latency, and failure isolation
• Build and maintain venue gateways over REST, WebSocket, and FIX: order entry, cancels, amendments, and drop copy
• Own order and execution management: one order per client, client order IDs aligned with the venue, no missed or hidden trades
• Run market data ingestion and normalization across 10,000+ instruments, with redundancy and failover between feeds and gateways
• Automate the instrument lifecycle: listing, delisting, expiries, and option rotations
• Onboard new venues and instrument types, and absorb their quirks so clients never see them
• Be the technical reference for the engineers building risk, ledger, and client apps on top of the core
• Lead incident response on the trading path, and write the runbooks so others can too

Qualifications

• 7+ years building production backend systems, with at least 3 in trading, market infrastructure, or exchange connectivity
• Deep experience with exchange or broker APIs (REST, WebSocket, FIX), order lifecycles, and market data
• Strong command of a systems or backend language used in production trading, such as C++, Rust, Java, or Go
• Solid distributed systems fundamentals: concurrency, idempotency, back-pressure, failover, and consistency
• Experience designing for high message rates (tens of thousands per second and up) at millisecond latency
• A track record of owning a production system end to end, including on-call for a 24/7 market
• Clear written and spoken English

Nice to Have

• Crypto derivatives: perpetuals, funding, options lifecycle, margin, and liquidation on Binance, Deribit, or similar
• OMS/EMS or smart order routing experience
• Functional programming or JVM experience (Clojure, Scala, Kotlin)
• Experience leading architecture decisions across several teams

Benefits

• Competitive compensation including discretionary bonus
• Opportunity to work at the forefront of an innovative, fast-growing industry
• Remote-first team with a flexible work environment focused on results
• Collaborative, low-ego culture with a strong execution mindset
• Annual company offsites to connect, collaborate, and recharge
• Birthdays off to celebrate your day your way!
• Unlimited Vacation
• Supportive parental leave policy designed to prioritize family and well-being

Company Description

3iQ is an equal opportunity employer. We encourage people from all backgrounds to apply but must be eligible to work in the country to be considered. We are committed to ensuring that our products and services are made available and accessible to everyone. All employment decisions are made without regard to race, color, national origin, ancestry, sex, gender, gender identity or expression, sexual orientation, age, genetic information, religion, disability, medical condition, pregnancy, marital status, family status, veteran status, or any other characteristic protected by law.

3iQ welcomes applicants with disabilities. Accommodation is available on request at every stage of our recruitment process, including applications, interviews, assessments, and onboarding. If you need accommodation, or would like this posting in an accessible format, please contact People & Culture at [email protected] . We will work with you to meet your needs, and anything you share will be kept confidential.