Senior Platform Engineer

Who we are

Dfns is a cybersecurity company providing crypto wallet infrastructure. Founded in August 2020 in Paris, Dfns was incubated by Techstars and STATION F before becoming a SOC-2 certified firm audited by Deloitte, employing 30 people across 6 countries and raising over $20M since creation with investors such as White Star Capital, Susquehanna, Coinbase, ABN AMRO, Hashed, 6MV, Semantic, Bpifrance, Figment, SGH, Wintermute, Motier, and more.

Dfns develops the most secure wallet-as-a-service infrastructure in Web3. It’s an API-first wallet management system, ideal for applications and organizations seeking to provide secure access to all blockchains through a single integration. Our APIs and SDKs were designed for wallet programmability and efficient implementations, enabling fast deployments, smart automation flows, as well as granular sets of permissions and policies via secure authentication credentials.

About this team

Help us build the leading wallet infrastructure for the multi-trillion-dollar digital asset industry. Join exceptional leaders (CTO, CPO, Chief Scientist) and experts (Platform Engineers, Security Engineers, Cryptographers, Protocol Designers) in a dynamic, collaborative environment. We’re looking for a skilled Senior Platform Engineer with expertise in cloud and hardware, a keen eye for detail, and the ability to thrive in high-pressure situations within our infrastructure team.

Your craft

As the Senior Platform Engineer, you will design, build and maintain our platform infrastructure based on DevOps and SRE principles. We expect your expertise to guarantee the security, scalability, and reliability of our systems, enabling us to deliver a steady, robust product for the demanding Web3 application space.

Your responsibilities will range from integrating corporate systems to ensuring seamless data flows within the organization, managing and expanding virtual machines, optimizing and stabilizing the cloud through capacity planning and resource management, adeptly troubleshooting network, storage, and computer issues across data centers, provisioning client environments and more.

• 6+ years experience in Infrastructure, DevOps, and/or SRE.

• Proficiency in Terraform, Node.js, and/or TypeScript.

• Secure enclave knowledge (e.g., Nitro Enclaves, AMD SEV).

• Jenkins expertise or similar for CI/CD, 12-Factor, microservices.

• Database admin, scaling, and tuning (RDBMS/NoSQL).

• Datadog or similar tools for comprehensive monitoring.

• Cloud infrastructure optimization (AWS, Google Cloud, etc.).

• Containerization (Docker) and Kubernetes expertise.

• Understanding of infrastructure security best practices.

• Experience in testing secure, resilient systems.

• Strong problem-solving skills and ability to champion ideas.

• Clear communication and clear thinking under high-pressure.

• Entrepreneurial mindset with a professional demeanor.

Location: France or other EU countries (flexibility to work fully remotely or at an office location of your preference within the European Union).

Work essentials: MacBook Pro, iPhone, AirPods, and other necessary equipment.

Events: fully funded attendance at fintech, blockchain, or related conferences.

Benefits: healthcare and life insurance, retirement plan, sponsored transportation, gym, lunch card, home office equipment, and other perks.

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