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# Senior Software Engineer, Banking

- **Company:** Hard Yaka
- **Location:** San Francisco, CA, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Accounting Systems, Application Programming Interfaces (APIs), Relational Databases, Distributed Systems, Payment Systems, Management of Software Versions, Backend, Event Driven Architecture
- **Published:** November 7, 2026
- **Apply:** https://www.juju.com/job/28_25197_4c6dba619eef790d59a220ff24b8c66c

## About the Role

* 6+ years building backend or full-stack web applications, with meaningful time spent on platform, infrastructure, or foundational systems
 * Deep experience designing APIs, services, and abstractions intended for consumption by other engineering teams - you understand what makes a good platform boundary
 * Strong background in financial systems, payments, ledgers, or banking integrations - you've worked in domains where correctness and auditability are non-negotiable
 * Track record of building systems where "close enough" isn't good enough - audit-ready outputs, not best-effort calculations
 * Ability to model complex business domains in relational databases with precision, especially in the face of ambiguity and evolving requirements
 * Experience owning foundational components that other teams depend on - you think about contracts, versioning, reliability, and developer experience
 * Startup experience or founder mindset - you've built something from scratch, or you carry that energy into how you work, * Experience with double-entry accounting systems or general ledger design
 * Background in regulated financial products or fintech infrastructure
 * Familiarity with event-driven architectures and distributed systems patterns
 * Experience building developer-facing tooling, SDKs, or internal platforms

## Description

AngelList powers the startup economy - managing $171B+ in assets and facilitating investments across over 13,000 startups. At the core of that is our banking infrastructure: the systems that move money, manage accounts, and ensure every dollar is tracked with precision., We're looking for a Senior Software Engineer to join our Banking team. This team builds the foundational components and services that other engineering teams across AngelList depend on - account primitives, transaction pipelines, ledger systems, and banking integrations. You won't just be building features; you'll be building the platform that features are built on.

This is a high-leverage role. The systems you design will be consumed by teams across AngelList and serve as the core of a high growth new product vertical. You'll need to think in terms of contracts, reliability, and extensibility - balancing the rigor required of financial infrastructure with the pace of a company that ships fast with a lean team.

What You'll Do

 * Design, build, and maintain foundational banking services and APIs consumed by multiple product teams across AngelList
 * Own core platform primitives - accounts, transactions, ledger entries, and money movement workflows
 * Build reliable integrations with banking partners and payment networks (ACH, wires, and related rails)
 * Define and enforce service contracts, data models, and interface boundaries that enable other teams to build with confidence
 * Improve the reliability, observability, and performance of banking infrastructure at scale
 * Partner with compliance and risk teams to ensure systems meet regulatory requirements
 * Contribute to technical direction and architectural decisions that shape how AngelList handles money
 * Mentor engineers across the organization who build on top of your team's platform