Block · 5 hours ago
Software Engineer, Access
United States
Full-time
Remote
Senior Level
5+ years expBlock is a technology company focused on increasing access to the global economy through innovative financial products. The Software Engineer, Access role involves designing and building the APIs and services that power Authentication & Permissions across Cash App and Block's ecosystem, ensuring secure and flexible access for customers.
Financial Services
Responsibilities
Design and build the APIs and services that power Authentication & Permissions across Cash App and Block's ecosystem, the systems that determine who can access what, and how they prove they are who they say they are
Build fine-grained permissions systems that enable different roles and capabilities across various account configurations
Build secure authentication experiences that protect customers while maintaining seamless access to their accounts
Improve account recovery success rates, helping legitimate customers regain access while keeping bad actors out
Consolidate authentication platforms, migrating critical flows into scalable, composable services
Design authorization primitives that product teams across Block can use to build secure, flexible experiences
Qualification
Required
5+ years building and operating production systems with demonstrated impact and technical ownership
Ability to think critically and analyze complex problems, weigh trade-offs, and make pragmatic decisions that balance competing priorities
A bias toward iterative delivery. You know how to break big problems into shippable pieces and maintain momentum through ambiguity
Comfort with complexity. Whether it's large codebases, distributed systems, or evolving requirements, you don't get overwhelmed; you get strategic
Excellent communication skills. You can explain technical concepts clearly, build alignment across teams, and adapt your style to different audiences
Customer empathy. You understand that behind every API call is a person trying to access their money, and that matters
High technical standards in software testing, delivery, and operational excellence
Adaptability and resilience. You stay calm and focused when priorities shift or requirements change
Preferred
Experience with authentication, authorization, or identity systems
Experience working in large codebases and breaking apart monoliths
Background in security, fraud prevention, or trust & safety domains
Experience building platform or infrastructure that other engineering teams depend on
Track record working effectively in distributed or remote teams
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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