Block · 2 days ago
Software Engineer, Bitkey
Bay Area, CA, United States of America
Full-time
Onsite
Senior Level
$218K/yr - $327K/yr
5+ years expBlock is a company focused on economic empowerment, and they are seeking a full-stack Software Engineer for Bitkey, their Bitcoin self-custody wallet. This role involves designing and operating backend systems, contributing to web interfaces, and improving customer experiences across the Bitkey ecosystem.
Financial Services
Responsibilities
Design, build, and maintain backend services and APIs that support Bitkey's public website, purchase flows, and customer-facing products
Build and evolve web-based experiences, including product/marketing surfaces and checkout flows
Partner closely with product, design, and growth teams to improve conversion, reliability, and user experience across the Bitkey funnel
Own features end-to-end, from backend logic and data models through frontend workflows and integrations
Collaborate with mobile/platform teams and design technologists to ensure web and service-backed flows integrate cleanly into the broader Bitkey experience
Help improve system reliability, observability, and operational maturity for customer- and revenue-facing systems
Contribute to architectural discussions around service boundaries, scalability, and long-term maintainability
Leverage AI-powered development tools to accelerate iteration, improve code quality, and explore new ways of working across the stack
Actively contribute ideas and experimentation around engineering practices, tooling, and team workflows, with a bias toward continuous improvement
Qualification
Required
5+ years relevant industry experience building and operating backend systems in production, particularly APIs and services that support customer-facing applications
Solid full-stack experience, with the ability to contribute to modern web front-ends (e.g., React or similar frameworks)
A strong backend skill set: comfort with data modeling, service design, and operational ownership
Experience collaborating closely with product managers, designers, and cross-functional partners
Strong engineering fundamentals, including testing, debugging, and performance tuning
Comfort learning new technologies and product domains as needed
Preferred
Experience working on public websites, growth funnels, or marketing surfaces
Familiarity with Kotlin, Rust, or similar strongly typed languages
Experience contributing to mobile applications (Android or iOS)
Interest in Bitcoin, financial products, or consumer fintech
Experience improving developer tooling, observability, or internal platforms
Mobile development experience
Benefits
Remote work
Medical insurance
Flexible time off
Retirement savings plans
Modern family planning
Company
Block
Block is one company built from many blocks, all united by the same purpose of economic empowerment.
10001+ employees
H1B Sponsorship
Block has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (257)
2024 (253)
2023 (260)
2022 (297)
Funding
Current Stage
Late StageLeadership Team
Amrita Ahuja
Chief Financial Officer
Lookman Olusanya
CFO, Square
Recent News
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Business Journals
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