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Senior Software Engineer - Platform & Infrastructure

Founding Senior Platform Engineer building and owning AWS cloud infrastructure, reliability, observability, security/compliance (SOC 2, Vanta), and release tooling for a fintech platform serving banks and credit unions.

160k – 200kNew York, NYDevOps / SRERemote5+ YOE

About the role

Responsibilities

  • Own and evolve the reliability posture of the ModernFi network (observability, incident response, SLOs, and on-call practices)
  • Lead the buildout of a more advanced release pipeline with merge queues, feature-flag tooling, and per-domain release gates for highest-stakes services
  • Take ownership of cloud platform, Pulumi modules, AWS account structure, identity, networking, and tooling for product engineers
  • Drive security and compliance posture: Vanta remediation, SOC 1/2 readiness, vulnerability scanning, secrets and key management, and hardening across the stack
  • Upgrade on-call tooling, runbooks, rotations, and postmortems while participating in infrastructure on-call rotation
  • Partner with product engineering pods to ship abstractions that reduce platform drag
  • Cultivate operational excellence through code reviews, design discussions, and mentorship

Requirements

  • 5+ years of software engineering experience with significant time on infrastructure, platform, or reliability-focused work in production
  • Deep fluency with cloud infrastructure (AWS preferred), infrastructure-as-code (Pulumi, Terraform), and modern CI/CD pipelines
  • Security mindset with familiarity in SOC 2, compliance tooling like Vanta, secrets management, key rotation, and least-privilege access
  • Hands-on experience with modern observability stack (Datadog, Prometheus + Grafana, Elastic stack) and track record of setting observability standards, defining SLOs, running postmortems
  • Comfortable owning systems end-to-end from IaC provisioning to recovery runbooks
  • Experience in small, fast-moving engineering teams with track record of improving reliability
  • Excellent communication skills and ability to explain complex concepts clearly

Tech Stack

  • AWS / Pulumi IaC
  • PostgreSQL (RDS), ECS, Docker
  • Temporal
  • Python (FastAPI, SQLAlchemy)
  • Datadog, PagerDuty, GitHub Actions
  • Auth0, Vanta, Fern

Skills

AWSPulumiTerraformPythonFastAPISqlalchemyDockerECSDatadogPostgresGitHub ActionsTemporalObservabilityCI/CDSOC 2

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