Senior Infrastructure Engineer
Dfns is a wallet-as-a-service platform that provides institutional-grade digital asset wallet infrastructure for fintechs, banks, and enterprises via API.
Maintainer signals as of 8/23/2026
Funding history
Projects
About Dfns
Dfns is a B2B cybersecurity company that offers wallet-as-a-service infrastructure, enabling financial institutions, fintechs, and enterprises to provision and manage programmable digital asset wallets at scale. Users can create MPC-secured multichain wallets, automate transaction workflows, enforce policy-based access controls, and deploy key management across cloud or on-premises environments. The platform supports multiple blockchains and is certified under SOC 2 Type II, ISO 27001, ISO 27017, and ISO 27018.
Skills
About the Role
Design, operate, and scale reliable, secure, and performant infrastructure for wallet services, transaction processing, and blockchain integrations. The role focuses on resilient architecture, automation, deployment, monitoring, security, and infrastructure supporting real-world financial workloads.
Requirements
- 8+ years of infrastructure, DevOps, or SRE experience in cloud-native systems.
- Strong AWS expertise; GCP, IBM, and Thales experience are pluses.
- Infrastructure-as-Code experience with Terraform and CI/CD automation skills.
- Deep knowledge of Docker, Kubernetes, and containerized microservices.
- Experience administering and tuning SQL and NoSQL databases.
- Familiarity with Datadog, ELK, Prometheus, and Grafana.
- Understanding of infrastructure security and PKI fundamentals.
- Proficiency in Python, Rust, and TypeScript.
- Clear communication skills and ability to operate under pressure.
- Blockchain networks, nodes, and smart contract experience is desirable.
Responsibilities
- Design, build, and maintain scalable and secure cloud infrastructure.
- Architect and operate containerized systems using Docker and Kubernetes.
- Automate provisioning and deployments with Terraform, Jenkins, and CI/CD pipelines.
- Implement observability across logs, metrics, and traces using Datadog.
- Optimize Node.js applications and backend services for performance and reliability.
- Configure and manage AWS Nitro secure enclaves.
- Partner with product and security teams on infrastructure strategy and risk.
- Document systems, promote knowledge sharing, and support client discussions.