Senior Software Engineer (L2)

Bitcoin.com; Polska; Remote; PLN 394,000 - 570,000; Full time

Benefits offered by this job

Competitive salary

Remote-friendly environment

Job summary

Bitcoin.com is seeking an experienced backend engineer to join a fully remote team across Europe. You will design and build core services, APIs, data models, and help shape the system architecture as we scale.

You will own significant pieces end-to-end, mentor engineers, and drive architectural decisions while maintaining code quality and reliability in production environments. Fluency in English and a proactive, self-driven work style are essential.

Qualifications

• 5+ years of professional experience owning production systems, not just shipping features.
• Strong Rust, Go, Java or Kotlin; production Rust strongly preferred.
• Proven experience designing REST APIs at scale; contracts, versioning strategy, and judgment about aging.
• Deep experience with AWS or equivalent, containers, and CI/CD, including building or hardening these systems.

Responsibilities

• Design and build the core services behind the product: APIs, data models, integrations, and make architectural calls shaping 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 with Product and Design to shape requirements and enforce robustness under real-world load
• Set the technical standard for the codebase: write maintainable code and mentor the team to that bar
• Drive architecture decisions while foundations are laid and know which decisions are expensive to reverse
• Mentor engineers and raise the team's practices around testing, instrumentation, and code quality

Skills

Rust

API design

AWS

CI/CD

Mentoring

English communication

Education

BS in Computer Science

Tools

AWS

Docker

Kubernetes

Job description

With millions of wallets created and a global audience, Bitcoin.com is one of the world's leading crypto content and onboarding platforms. We're now starting something new, from a blank repo in Rust, and we're early enough that the architecture is still being decided. Join us in bringing crypto to the next billion users. This is a fully remote position based in Europe.

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 Rust strongly preferred
• 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, remote-friendly environment