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.
About the job
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
AWS, Pulumi, Terraform, Python, FastAPI, Sqlalchemy, Docker, ECS, Datadog, Postgres, GitHub Actions, Temporal, Observability, CI/CD, SOC 2
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