Senior Software Engineer
Bastion · New York City
About this role
**Senior Software Engineer — Bastion** **About Bastion** Bastion provides the regulated infrastructure businesses need to hold, move, and issue stablecoins. Our platform combines custodial wallets, global payment orchestration, and stablecoin issuance—so customers can use each product independently or connect them into a single end-to-end flow. We operate through our own regulated entities, with compliance and risk controls built directly into the platform. **Overview** We’re looking for a **Senior Software Engineer** to build the core infrastructure powering our stablecoin platform. You’ll design and ship services that handle **custody, transfers, issuance, and compliance workflows**—systems that process real money and require exceptional reliability and security. You’ll work within one of our product verticals (**Custody, On/Off Ramps, Issuance, or Shared Services**), collaborating closely with product managers, compliance, and other engineers. Teams are small and cross-functional, so your work ships fast and has direct impact on customers and partners. **What you’ll do (first 30 / 90 / 180 days)** **First 30 Days: Learn the Rails, Ship Confidently** - Ramp on service architecture, CI/CD, observability, and engineering conventions - Ship a small feature slice or quality-of-life improvement in one service - Add tests, dashboards, or runbook notes for areas you touch - Build relationships with your vertical team and cross-functional partners - **Outcomes:** - Multiple safe production deploys with follow-up verification - You can run core services locally and trace requests through logs/metrics - Updated documentation and/or PRs that improve onboarding in your area **By 90 Days: Own a Service Surface and Raise the Bar** - Take ownership of a service or capability across our product, with production-readiness in mind - Lead a medium-scope project (e.g., updating an API contract, implementing a partner integration, improving robustness of a critical path) - Strengthen reliability with better logging, tracing, alerts, and failure handling - **Outcomes:** - A delivered feature or refactor that improves a product metric, SLO, or developer ergonomics - You’re a go-to person for your service domain **By 180 Days: Drive Cross-Service Impact** - Lead a cross-service initiative (e.g., API versioning plan, data model migration, compliance-driven workflow change) - Shape technical direction with design docs and mentoring - Partner with product and compliance to make pragmatic, regulation-aware tradeoffs - **Outcomes:** - A multi-sprint delivery that simplifies the system and unlocks product velocity - Clear before/after reliability or performance improvements - Documentation and designs that help others ship faster and safer **Some challenges you might tackle** - Designing stable, evolvable APIs for custody, transfers, or issuance without breaking downstream clients - Building idempotent job flows for high-throughput transfers with strong audit trails - Hardening key operations using hardware-backed isolation and robust key policies - Improving p95 latency through query tuning, caching, or backpressure strategies - Navigating tradeoffs between product velocity and compliance requirements in a regulated environment - Building services that integrate with banking partners and crypto infrastructure providers **Typical stack** - **Languages:** Go and TypeScript/Node.js; some services in Rust as needed - **Service patterns:** gRP
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