[Hiring] Senior Software Engineer, DevOps @Caliza

Role Description

Caliza moves money in real time across payment rails and countries. When our systems are down, our customers' money stops. That makes reliability, security and the ability to ship safely core to the business, not a back-office concern.

Good DevOps makes every other engineer faster and safer: you'll own the infrastructure we use to run, ship and monitor our software end to end, reporting to our security & infrastructure lead, who focuses on security while you drive DevOps. This isn't a role that only runs other people's code: you'll write and ship production code yourself, in our application services as well as our infrastructure, held to the same standards of review and testing as the rest of the team. Strong software engineering fundamentals matter as much here as infra experience: you should be comfortable reading and contributing to our codebase, not just the pipelines around it.

In your first six months, you'll:

• Learn our infrastructure and deployment pipelines end to end.
• Help design and build our agentic development environment.
• Improve our monitoring and alerting so we catch payment-impacting issues before customers do.
• Strengthen our disaster recovery and backup strategy, and test it.
• Make our compliance evidence (access reviews, change logs, audit trails) easier to produce.

What you'll be doing:

• Maintain and evolve our Kubernetes-based infrastructure on AWS: AWS CDK for provisioning, Helm/kubectl for workload deployments.
• Build and improve deployment pipelines with GitHub Actions.
• Write and ship production code: infrastructure as code, internal tooling, and changes to our application services, such as instrumentation, health checks and performance fixes.
• Own observability with New Relic: dashboards, alerting, and SLOs for critical payment flows.
• Operate and scale our managed services, including messaging (CloudAMQP) and databases (MongoDB Atlas, PostgreSQL).
• Manage secrets, access controls and identity infrastructure.
• Design for high availability and disaster recovery, and lead incident response and postmortems.
• Optimize AWS cost and performance.
• Partner with engineering and compliance on security controls and audit readiness.

Qualifications

• Strong programming skills in at least one general-purpose language, ideally Java or Kotlin, with a real track record of shipping and reviewing production code.
• 5+ years of experience in infrastructure, DevOps or SRE roles.
• Strong experience operating production systems on AWS.
• Proficiency with Kubernetes in production.
• Experience with infrastructure as code (AWS CDK, Terraform or similar) and Helm.
• Experience building CI/CD pipelines, ideally with GitHub Actions.
• Experience with monitoring and observability tools such as New Relic.
• A security-first mindset: least-privilege access, secrets management, network security.
• Comfort with on-call and incident response.
• Hands-on experience with AI-assisted development in your daily work, with the judgment to review and question what the tools produce.
• Comfort with high autonomy and ambiguity in a fast-moving, remote startup.
• Clear written communication. Most of our collaboration is async.

Requirements

• Experience in fintech, payments or other regulated environments.
• Experience supporting SOC 2 audits, which we maintain today, or ISO 27001, which we may pursue.
• Experience working in Spring Boot codebases, in Java or Kotlin.
• Experience with RabbitMQ and MongoDB in production.
• Experience operating identity and access management systems (e.g. Keycloak).

Benefits

• Health coverage.
• Paid time off and holidays.
• Home office or equipment allowance.
• Professional development budget.
• In-person team offsites.