Senior Software Engineer - Platform & Infrastructure

Role Description

ModernFi is hiring a Senior Platform & Infrastructure Engineer to join a talented and collaborative team building the foundation of our platform. You’ll work on critical systems from day one, with meaningful ownership and the opportunity to shape the direction of our products and infrastructure.

We believe in hiring top talent and giving you the autonomy to build impactful solutions, while fostering a culture of collaboration and learning. You’ll grow your expertise, work on mission-critical systems, and contribute to products that help banks and credit unions better serve their communities, improving financial health nationwide.

This is a founding Platform Engineering role, and you'll have the opportunity to define how we run our infrastructure, release software, and approach security as we scale from serving hundreds of institutions to thousands.

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 our highest-stakes services across multiple environments.
• Take ownership of our cloud platform, Pulumi modules, AWS account structure, identity, networking, and the tooling product engineers build on.
• Drive our security and compliance posture: Vanta remediation, SOC 1/2 readiness, vulnerability scanning, secrets and key management, and hardening across the stack.
• Upgrade how ModernFi does on-call: the tooling around it, the runbooks behind it, the rotations that staff it, and the postmortems that close it out.
• Partner closely with our product engineering pods to understand where the platform creates drag, and ship the abstractions that let them move faster and more safely.
• Cultivate a culture of operational excellence through code reviews, design discussions, mentorship, and the steady raising of our collective bar for what production-grade looks like.

Qualifications

• 5+ years of software engineering experience, with significant time spent on infrastructure, platform, or reliability-focused work in a production environment.
• Deep fluency with cloud infrastructure (ideally AWS), infrastructure-as-code (Pulumi, Terraform, or similar), and modern CI/CD pipelines.
• A security mindset: familiarity with frameworks such as SOC 2, compliance tooling such as Vanta, and concepts such as secrets management, key rotation, and least-privilege access is a plus.
• Hands-on experience with a modern observability stack (Datadog, Prometheus + Grafana, the Elastic stack, or equivalent).
• Comfortable owning systems end-to-end, from the IaC that provisions them to the runbooks that recover them.
• Experience working in or alongside small, fast-moving engineering teams.
• Excellent communication skills.
• High level of empathy, integrity, and calmness under pressure.
• Excited by the prospect of being the founding Platform Engineer at a fintech company.

Benefits

• Generous salary.
• Unlimited PTO.
• 401(k).
• Premium health, dental, and vision insurance.
• Access to significant equity at a critical stage of the company’s growth.