Fullstack Engineer

About Frontrun Frontrun is an onchain trading platform with 70k+ users. We bring wallet and X/Twitter intelligence, account and token history, and fast trade execution directly into the X pages and trading terminals our users already use, across Solana and EVM ecosystems.

We have been operating for over a year and are profitable with strong growth. We are a small, globally distributed team serving users across time zones. In a team our size, you will not be confined to a narrow layer: your code will reach production, and you will see its impact on real users and real trades.

### About the Role We are hiring a mid-level/senior full-stack engineer in North America timezone to strengthen our trading systems and on-call coverage. This is not a low-intensity maintenance role. Our users trade 24/7, while markets, blockchains, and third-party platforms change quickly. Production issues require calm, fast, and accountable responses.

You should be able to take a feature from the frontend through backend services, data systems, and the trading path - and remain accountable for its performance, reliability, and observability after launch.

### What You'll Do

• Design, build, and ship features end to end across our frontend, APIs, backend services, data stores, and trading workflows.
• Build and optimize low-latency, highly reliable trading systems, improving critical-path latency, execution success, fault isolation, and graceful degradation.
• Participate in the North America on-call rotation: assess impact, mitigate quickly, restore service, communicate clearly, and drive root-cause analysis and follow-up work to completion.
• Improve observability across critical paths with metrics, logs, traces, alerts, dashboards, and runbooks so we detect and act on failures before users report them.
• Solve real distributed-systems problems involving concurrency, queues, caching, databases, timeouts, retries, idempotency, third-party dependencies, and cross-chain differences.
• Work directly with product, design, and other engineers to turn ambiguous requirements into shippable, testable, and maintainable solutions.
• Raise delivery quality through automated testing, code review, and production validation, with particular care around changes that can affect user funds.
• Fix the immediate incident while also removing recurring failure modes and manual work, steadily reducing the on-call burden.

### You'll Thrive Here If

• You want to own complete problems, not just implement pre-sliced tickets.
• You enjoy taking systems from "it works" to "it stays reliable under real pressure."
• You are comfortable with a fast pace and high standards, and you use engineering to eliminate pointless firefighting.
• You want your work to stay close to users, production systems, and business outcomes.