Senior/Staff Software Engineer (Platform & Infrastructure)

Join ModernFi, a fintech company on a mission to improve financial health nationwide. As a Senior/Staff Software Engineer focused on Platform & Infrastructure, you will play a critical role in shaping the direction of our products and infrastructure. You will own and evolve the reliability posture of the ModernFi network, lead the buildout of an advanced release pipeline, and drive our security and compliance posture. This is a unique opportunity to have a direct impact on the American economy and empower our partner financial institutions.

• Assumer la responsabilité technique de la plateforme, définir comment nous opérons notre infrastructure, libérer des logiciels et aborder la sécurité.
• Diriger la construction d'un pipeline de publication plus avancé avec des files d'attente de fusion, des outils de drapeau de fonctionnalité et des portes de publication par domaine.
• Posséder et faire évoluer la posture de fiabilité du réseau ModernFi (observabilité, réponse aux incidents, SLOs, et pratiques d'appel).
• Comfortable owning systems end-to-end, from the IaC that provisions them to the runbooks that recover them
• 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
• Hands-on experience with a modern observability stack (Datadog, Prometheus + Grafana, the Elastic stack, or equivalent), and a track record of setting observability and monitoring standards that translate into actionable insights for product teams downstream. You've also defined SLOs, run postmortems, and improved the on-call experiences you've personally experienced
• You're excited by the prospect of being the founding Platform Engineer at a fintech company where your work directly determines what we can safely ship. You’re the kind of IC who thrives on shipping infrastructure that other engineers love to build on
• Excellent communication skills. You can explain a network topology to a non-engineer and a production incident to a CEO with equal clarity
• A security mindset: you treat security as a first-class concern in everything you build, even if you don't come from a dedicated security background. 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
• Experience working in or alongside small, fast-moving engineering teams, with a track record of making them faster and more reliable rather than introducing process drag
• High level of empathy, integrity, and calmness under pressure