Senior Software Engineer

BastionNew York, NY
$240,000 - $270,000Hybrid

About The Position

We are looking for a Senior Software Engineer to join our engineering team and build the core infrastructure that powers our stablecoin platform. In this role, 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. Our teams are small and cross-functional, which means your work ships fast and has direct impact on customers and partners. This is an opportunity to build financial infrastructure at a 30+ person company where ownership is real. We expect engineers to take initiative. Whether that's shipping features, improving observability, or strengthening the codebase. If you want to work on hard problems in a regulated domain where your contributions matter immediately, we'd love to talk.

Requirements

  • Experience with Go and TypeScript/Node.js.
  • Experience with gRPC and REST service patterns.
  • Experience with Postgres, Redis, Kafka.
  • Experience with AWS, containers, Kubernetes, Terraform.
  • Experience with Datadog, Grafana, Sentry, Incident.io.
  • Ability to learn the rails, service architecture, CI/CD, observability, and engineering conventions.
  • Ability to ship a small feature slice or quality-of-life improvement in one service.
  • Ability to add tests, dashboards, or runbook notes for the areas you touch.
  • Ability to build relationships with your vertical team and cross-functional partners.
  • Ability to take ownership of a service or capability across our product, with an eye toward production-readiness.
  • Ability to lead a medium-scope project: updating an API contract, implementing a partner integration, or improving robustness of a critical path.
  • Ability to strengthen reliability with better logging, tracing, alerts, and failure handling.
  • Ability to lead a cross-service initiative, such as an API versioning plan, a data model migration, or a compliance-driven workflow change.
  • Ability to shape technical direction with design docs and mentoring.
  • Ability to partner with product and compliance to make pragmatic, regulation-aware tradeoffs.
  • Ability to design stable, evolvable APIs for custody, transfers, or issuance without breaking downstream clients.
  • Ability to build idempotent job flows for high-throughput transfers with strong audit trails.
  • Ability to harden key operations using hardware-backed isolation and robust key policies.
  • Ability to improve p95 latency through query tuning, caching, or backpressure strategies.
  • Ability to navigate tradeoffs between product velocity and compliance requirements in a regulated environment.
  • Ability to build services that integrate with banking partners and crypto infrastructure providers.

Nice To Haves

  • Experience with Rust.
  • Experience with GraphQL/tRPC at the edge for frontend BFFs.
  • Experience with Temporal.
  • Experience with hardware-backed key isolation with Nitro Enclaves for sensitive operations.

Responsibilities

  • Design and ship services that handle custody, transfers, issuance, and compliance workflows.
  • Collaborate closely with product managers, compliance, and other engineers.
  • Take initiative in shipping features, improving observability, or strengthening the codebase.
  • Learn the rails, 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 the areas you touch.
  • Build relationships with your vertical team and cross-functional partners.
  • Take ownership of a service or capability across our product, with an eye toward production-readiness.
  • Lead a medium-scope project: updating an API contract, implementing a partner integration, or improving robustness of a critical path.
  • Strengthen reliability with better logging, tracing, alerts, and failure handling.
  • Lead a cross-service initiative, such as an API versioning plan, a data model migration, or a compliance-driven workflow change.
  • Shape technical direction with design docs and mentoring.
  • Partner with product and compliance to make pragmatic, regulation-aware tradeoffs.
  • Design stable, evolvable APIs for custody, transfers, or issuance without breaking downstream clients.
  • Build idempotent job flows for high-throughput transfers with strong audit trails.
  • Harden key operations using hardware-backed isolation and robust key policies.
  • Improve p95 latency through query tuning, caching, or backpressure strategies.
  • Navigate tradeoffs between product velocity and compliance requirements in a regulated environment.
  • Build services that integrate with banking partners and crypto infrastructure providers.

Benefits

  • Equal employment opportunities to all employees and applicants for employment.
  • Prohibition of discrimination and harassment of any type.
  • Participation in E-Verify to authorize eligibility of employment in the United States.
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