Senior Infrastructure Engineer Senior Infrastructure Engineer Senior Infrastructure Engineer

HireChain Ltd; Ottawa; On-site; CAD 120,000 - 180,000; Full time

Job summary

HireChain Ltd. is seeking a Senior Infrastructure Engineer to design, operate, and scale cloud infrastructure supporting wallet services, transactions, and blockchain integrations.

You will automate provisioning, monitor, and secure systems while collaborating with product and security teams to meet risk-based roadmaps. The role emphasizes building resilient architectures, improving deployments, and driving observability with Datadog, ELK, Prometheus, and Grafana.

Qualifications

• 8+ years of infrastructure, DevOps, or SRE experience in cloud-native systems.
• Strong expertise with AWS (GCP/IBM/Thales a plus).
• Infrastructure-as-Code (Terraform) and CI/CD automations.
• Deep knowledge of Docker, Kubernetes, and containerized microservices.

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.

Tools

AWS

Docker

Kubernetes

Terraform

Jenkins

Datadog

ELK

Prometheus

Grafana

Python

Rust

TypeScript

Job description

Join a team of engineers and cryptographers building the infrastructure behind the next generation of financial systems.

We’re hiring a Senior Infrastructure Engineer to design, operate, and scale the systems that power our platform. You’ll build and maintain the infrastructure that supports wallet services, transaction processing, and blockchain integrations. You’ll work at the intersection of distributed systems, security, and cloud infrastructure to ensure our platform remains reliable, secure, and performant. This role goes beyond operating infrastructure. You’ll help design resilient architectures, automate operations, and improve how we deploy, monitor, and secure our systems. You’ll work closely with engineering, product, and security teams to deliver infrastructure that scales with real-world financial workloads.

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.

Requirements

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.

Interview Process

• 1

  Hiring Manager Interview

  • Intro call with Co-CEO (30 mins)
• 2

  Behavioural Interview

  • Personality and cognitive tests (45 min)

  For this step, they need a calm environment and concentration. Every step has only 10 minutes to be completed and the majority of people (me included) fell short on the first part and can't finish it!

  It's in the description when they receive but the TestGorilla mail 5 parts:

  • critical thinking
  • verbal reasoning (in English, if they're not mother-tongue, we take into account in the final results of course... but we use it to test their level of English at the same time)
  • attention to details (textual)
  • numerical reasoning
  • problem solving

  For each part, they have a few test questions to get familiar with the format. This part is not really time-measured

  Then they immediately jump in the real exercice, and here they have 10 minutes max... and you need to be quick

• 3

  Take Home Test

  • Coding test in a language of your choice
• 4

  Group Interview

  • Focus interviews with the hiring panel (180 min) - this is normally split up into seperate interviews
    • Code review
    • Architecture review
    • Security fundamentals
    • Culture check fit
• 5

  Final Interview

  • Final interview with CTO (30 min)

Hiring Criteria

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.

Location

Remote - Based in the United States or Canada

$ Competitive

DFNS

Dfns is the leading Wallets-as-a-Service (WaaS) platform, helping fintechs, institutions, and enterprises simplify digital asset management and securely onboard users onchain.