Senior Platform & Security Engineer

WHAT YOU'LL BE DOING IN THIS ROLE

• Own and harden our platform: AWS, Kubernetes, Postgres, infrastructure as code, CI/CD, observability and incident response

• Make security the default, with least privilege, secrets management and tenant isolation built into the platform instead of bolted on later

• Turn our SOC 2 and ISO 27001 commitments into controls and evidence that are automated, not a yearly scramble

• Turn recurring operational toil into self-service systems that engineers actually adopt, from preview environments to internal access

• Help Duna run AI agents in engineering safely, with the sandboxes, guardrails and human checkpoints that make it possible

• Take calm ownership of incidents, and make sure the system gets better afterwards, not just the moment

WHAT WE'RE LOOKING FOR

• Deep, hands-on experience with AWS (or comparable), Kubernetes, infrastructure as code, CI/CD and observability

• Real security engineering skills: you turn least privilege and auditability requirements into working systems

• Comfort with the enterprise IT side of a startup, from certifications and customer security reviews to identity and device management

• High agency in ambiguity, turning a vague problem into a shipped plan

• Pragmatic judgement about when to harden, when to simplify and when to leave something alone

• Curiosity about what AI changes in how we build and run software

Our platform runs on AWS and Kubernetes with Terraform, Postgres and RabbitMQ, alongside a Node.js and TypeScript product stack built on event sourcing. You will not have used all of it before. We care more about the depth you bring and how you pick up the rest.