With millions of wallets created and a global audience, Bitcoin.com is one of the world's leading crypto content and onboarding platforms. We are now starting something new, from a blank repo in Rust, and we are early enough that the architecture is still being decided. Join us in bringing crypto to the next billion users. Location: Warsaw (remote for first months, then hybrid) Key Responsibilities * Design and build the core services behind the product: APIs, data models, integrations, and make the architectural calls that will shape the system for years * Own significant pieces of the product end-to-end, from design through production, including on-call ownership and incident response * Partner directly with Product and Design to shape requirements, pushing back where needed so what gets built holds up under real-world load * Set the technical standard for the codebase: write code others can maintain, and hold the team to that bar through reviews and mentorship * Drive architecture and technical decisions while the foundations are still being laid, and bring the judgment to know which decisions are expensive to reverse * Mentor other engineers and help level up the team's practices around testing, instrumentation, and code quality What We Are Looking For: Required * 5+ years of professional experience, with a track record of owning systems in production, not just shipping features * Strong Rust, Go, Java or Kotlin; production in Rust is a must * Proven experience designing REST APIs at scale; contracts, versioning strategy, and the judgment to know what will and will not age well * Deep experience with AWS or equivalent, containers, and CI/CD, including having built or hardened these systems, not just used them * Fluent with AI coding tools like Claude Code, with strong judgment on when to trust, and when to override, their output * Experience mentoring engineers and/or leading technical initiatives * Clear written and verbal English, and a self-driven work style * BS in Computer Science or equivalent experience Nice to Have * Payment rails (SEPA, SWIFT, ACH) or card issuing * Regulated fintech: PSD2, KYC/AML, PCI DSS * Crypto custody, on-chain settlement, stablecoin flows * Monitoring and analytics tools (Sentry, New Relic) * Experience setting technical direction or architecture for a product from its earliest stages * Solid blockchain fundamentals: ERC20, RPC nodes, UTXO vs account models Why Join Us * Competitive salary and benefits * Build a new product from the ground up, not maintain someone else's * Room to grow in a fast-moving global organization * Shape the architecture and technical culture of a fast-moving global organization * One of the most recognized names in crypto * Flexible, modern environment

Senior Software Engineer (Hybrid - Poland)

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