Principal Backend Engineer

Who we are:

Revenue comes from a mix of advertising, affiliate commissions and a premium tier. Since 2014, the company has run a comparison site for car insurance, mortgages and credit cards.

The role:

The role is new and comes from growth in our client base. This hire will help us split a large monolith into a handful of well-defined services without breaking anything customers rely on. Fully remote. You can work from anywhere in Spain.

In your first few months you will:

• Tune slow queries, add indexes and read query plans
• Reduce cloud costs by right-sizing services and cleaning up unused resources
• Write integration and contract tests so API changes don't break consumers
• Containerize services with Docker and deploy them to Kubernetes or ECS
• Coordinate with frontend and mobile engineers on API contracts and versioning
• Handle on-call for services the team owns and lead incident follow-ups
• Secure endpoints with OAuth 2.0, JWT validation and proper input checks

About you:

• Familiarity with Docker and CI/CD pipelines
• Understanding of concurrency, transactions, idempotency and retries
• Proficiency in at least one of Go, Java, Kotlin, Python, C# or Node.js
• Experience designing and versioning HTTP APIs

Also helpful:

• Kubernetes, including Helm charts
• Terraform or Pulumi
• Prior work breaking up a monolith

Why work with us:

• Private health insurance
• Remote work allowance
• Meal vouchers
• Training budget
• Flexible remuneration plan

We will only contact shortlisted applicants.

Start: Immediately.

Demo job created on 11jobs for testing and demonstrations. It is not an actual opening at Thistletrack S.L..