Senior Backend Engineer, Crypto Infrastructure & Security

Hoodl2; Greater London; Hybrid; GBP 120,000 - 180,000; Full time

Benefits offered by this job

Equity options

Health insurance

Commuter stipend

Well-being programs

Job summary

Hoodl2 in London is seeking a Senior Backend Engineer to architect and maintain the AWS-based custody infrastructure, wallet workflows, and blockchain node operations. You will own third-party custodian integrations and contribute to secure, scalable infrastructure across multiple networks.

You will work in a hybrid model with in-person collaboration preferred several days a week, and you’ll join a high-performance team focused on reliability, security, and rapid innovation in digital asset

Qualifications

• Senior-level experience running cloud infrastructure (AWS) in production.
• Experience managing blockchain nodes in production.
• Hands-on experience with Ansible, Terraform, or similar configuration management and Infrastructure as Code tooling.
• Experience running containerized workloads on Kubernetes and Docker.
• Solid Python and/or Go skills, with real production experience.
• A strong security focus — you've worked on systems where key management and access control are critical.
• Experience with Prometheus, Grafana, or an equivalent monitoring stack.

Responsibilities

• Build and run the AWS infrastructure behind custody, key management, and blockchain node operations.
• Automate infrastructure and configuration management (Ansible, Terraform, or similar) so the team spends less time on manual operations.
• Run our blockchain nodes across the networks we support, and keep them healthy and available.
• Write and maintain services in Python for infrastructure management and wallet operations.
• Own the integrations with third-party custodians.
• Build out Kubernetes and Docker deployments as we containerize more of the custody stack.
• Set up monitoring and alerting (Prometheus, Grafana, or equivalent) so we know about problems before customers do.
• Apply security controls and standards throughout — access control, key management, incident response.
• Provide on-call support, responding to and resolving production issues to keep custody systems reliable and available.

Skills

AWS production

Blockchain nodes in production

Python/Go programming

Security & access control

Monitoring stack (Prometheus/Grafana)

IaC tooling

Tools

Ansible

Terraform

Kubernetes

Docker

Prometheus

Grafana

Job description

Hoodl2 in London is seeking a Senior Backend Engineer to architect and maintain the AWS-based custody infrastructure, wallet workflows, and blockchain node operations. You will own third-party custodian integrations and contribute to secure, scalable infrastructure across multiple networks.

You will work in a hybrid model with in-person collaboration preferred several days a week, and you’ll join a high-performance team focused on reliability, security, and rapid innovation in digital asset