Senior Software Engineer

Job not on LinkedIn

🕒 August 11

🇵🇱 Poland – Remote

⏳ Contract/Temporary

🟠 Senior

🧑‍💻 Full-stack Engineer

👻 Ghost score 22%

What it means: the chance that no one is really hiring for this job.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.Why this score:

• Open for 91 days.
• Jobs at this company usually fill in 46 days.
• No salary listed.

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Bitcoin

WebsiteLinkedInAll Job Openings

1001 - 5000 employees

Founded 2009

₿ Crypto

💸 Finance

🌐 Web 3

Crypto • Finance • Web 3

Bitcoin is an open-source, decentralized digital currency and peer-to-peer payment network that enables permissionless transactions without a central authority. It uses a distributed ledger (blockchain) and collective network validation to issue and record bitcoins, offering global payments, low processing fees, and censorship resistance. Bitcoin is maintained by a community of developers and contributors; resources such as Bitcoin. org provide wallets, documentation, developer guides, and tools for running full nodes and participating in the network.

📋 Description

• Design and build core services behind the product, including APIs, data models, and integrations • Make architectural decisions that will shape the system for years • Own significant pieces of the product end-to-end, from design through production • Take ownership of on-call responsibilities and incident response • Partner with Product and Design to shape requirements and ensure the product holds up under real-world load • Set the technical standard for maintainable code through implementation, reviews, and mentorship • Drive architecture and technical decisions while the product foundations are being established • Mentor other engineers and improve practices around testing, instrumentation, and code quality

🎯 Requirements

• 5+ years of professional experience • Track record of owning systems in production, not just shipping features • Strong Rust, Go, Java, or Kotlin skills; production Rust strongly preferred • Proven experience designing REST APIs at scale, including contracts and versioning strategy • Deep experience with AWS or equivalent, containers, and CI/CD, including building or hardening these systems • Fluency with AI coding tools such as Claude Code and sound judgment when evaluating their output • Experience mentoring engineers and/or leading technical initiatives • Clear written and verbal English • Self-driven work style • BS in Computer Science or equivalent experience • Nice to have: payment rails such as SEPA, SWIFT, or ACH, or card issuing • Nice to have: regulated fintech knowledge including PSD2, KYC/AML, or PCI DSS • Nice to have: crypto custody, on-chain settlement, or stablecoin flows • Nice to have: monitoring and analytics tools such as Sentry or New Relic • Nice to have: experience setting technical direction or architecture for a product from its earliest stages • Nice to have: solid blockchain fundamentals, including ERC20, RPC nodes, and UTXO vs account models

🏖️ Benefits

• Competitive salary and benefits • Room to grow in a fast-moving global organization • Flexible, modern, remote-friendly environment • Opportunity to build a new product from the ground up • Opportunity to shape the architecture and technical culture of a fast-moving global organization • Work with one of the most recognized names in crypto

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