Senior Infra Engineer: Cloud, Security & Scale (Remote EU)

Dfns; Paris; Hybrid; EUR 120,000 - 180,000; Full time

Benefits offered by this job

Healthcare

Travel expenses

Job summary

Dfns is hiring a Senior Infrastructure Engineer to design, operate, and scale the systems behind our financial platform. You will build and maintain cloud infrastructure supporting wallet services, transaction processing, and blockchain integrations, while collaborating with product and security to align infra with roadmap and risk strategy.

You will automate provisioning, implement observability, and improve deployments across distributed systems, emphasizing security and reliability for

Qualifications

• 8+ years of infrastructure, DevOps, or SRE experience in cloud-native systems.
• Strong expertise with AWS (GCP is a plus; IBM and Thales are a plus too).
• Skilled in Infrastructure-as-Code ( Terraform) and CI/CD automations.
• Deep knowledge of Docker, Kubernetes, and containerized microservices.
• Experience administering and tuning SQL and NoSQL databases.
• Familiar with observability platforms (Datadog, ELK, Prometheus/Grafana).
• Solid understanding of infrastructure security and PKI fundamentals.
• Proficiency in scripting and systems programming (Python, Rust, TypeScript).
• Clear communication skills and ability to operate reasonably under pressure.
• Ideally, experience with blockchain networks, nodes, and smart contracts.

Responsibilities

• Design, build, and maintain cloud infrastructure with a focus on scalability and security.
• Architect and operate containerized and orchestrated systems (Docker, Kubernetes).
• Automate provisioning and deployments using Terraform, Jenkins, and CI/CD pipelines.
• Implement and maintain observability with Datadog across logs, metrics, and traces.
• Optimize performance and reliability of Node.js applications and backend services.
• Configure and manage secure enclaves (AWS Nitro) to harden critical workflows.
• Partner with product and security to align infra decisions with roadmap and risk strategy.
• Document systems, promote knowledge sharing, and support client discussions.

Skills

Cloud architecture

Distributed systems

SRE / DevOps

Security concepts

Scripting (Python, Rust, TS)

Communication under pressure

Blockchain familiarity

English communication

Tools

Terraform

Jenkins

Docker

Kubernetes

Datadog

ELK

Prometheus/Grafana

AWS

AWS Nitro

Job description

Dfns is hiring a Senior Infrastructure Engineer to design, operate, and scale the systems behind our financial platform. You will build and maintain cloud infrastructure supporting wallet services, transaction processing, and blockchain integrations, while collaborating with product and security to align infra with roadmap and risk strategy.

You will automate provisioning, implement observability, and improve deployments across distributed systems, emphasizing security and reliability for