JTL-Software-GmbH

Senior DevOps Engineer (AWS + CDK)

Berlin, Germany full-time Mid Salary not listed
full-time Mid level Technology & IT Curated
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About the role

Your missionWorking model: Hybrid 

countX is a Berlin-based SaaS company that simplifies EU VAT compliance for e-commerce businesses. Our platform automates VAT registration, reporting, and compliance processes, enabling online merchants to expand across Europe with less administrative effort and lower compliance risk.

We’re looking for a DevOps Engineer to own and scale our AWS infrastructure, streamline deployments, and ensure high availability and security across our systems. You’ll be working closely with engineering teams to make our software delivery process fast, reliable, and cost-efficient — all powered by AWS and the AWS CDK.

Responsibilities

Design, maintain, and improve AWS infrastructure using AWS CDK (TypeScript/Python)
Build and maintain CI/CD pipelines (GitHub Actions, CodePipeline, or similar)
Automate deployments, infrastructure provisioning, and operational workflows
Monitor, troubleshoot, and optimize system performance using AWS-native tools (CloudWatch, X-Ray, etc.)
Implement logging, alerting, and observability best practices
Manage networking, security groups, IAM roles, and secrets securely
Drive cost optimization strategies in AWS
Collaborate with developers to improve development-to-production workflows
Participate in on-call rotation and incident resolution

Your profile5+ years in a DevOps, SRE, or similar role
Strong hands-on experience with AWS services (EC2, ECS/EKS, Lambda, API Gateway, RDS, S3, CloudFront, etc.)
Proven experience with AWS CDK for Infrastructure as Code
Proficiency with CI/CD tools (GitHub Actions, CodeBuild, CodePipeline, etc.)
Good scripting skills (TypeScript, Python, or Bash)
Solid knowledge of Docker and container orchestration (ECS, EKS, or Kubernetes)
Strong understanding of networking, security, and AWS best practices
Experience with monitoring/observability tools (CloudWatch, Prometheus, Grafana, or similar)

Nice to HaveExperience with AWS cost optimization and tagging strategies
Knowledge of serverless architectures (Lambda, Step Functions, EventBridge)
Familiarity with compliance requirements (ISO 27001, SOC 2, GDPR)

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Interview prep

Walk in with sharper answers.

Use this as a quick practice sheet before you speak with the employer.

Mid
Technology & IT API integration Data Analysis Javascript Python Mid level full-time

Likely questions

  1. Tell us about work you have done that is close to the Senior DevOps Engineer (AWS + CDK) role.
  2. How would you approach your first 30 days at JTL-Software-GmbH?
  3. Which of API integration, Data Analysis and Javascript have you used recently, and what did it help you achieve?
  4. Describe a time you solved a problem without waiting to be told exactly what to do.
  5. How do you handle busy days, changing priorities, or pressure at work?

Prepare before the call

  • A recent example that proves your experience with API integration, Data Analysis and Javascript.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the Senior DevOps Engineer (AWS + CDK) role because I can bring practical experience in API integration, Data Analysis and Javascript, learn the team quickly, and contribute to the outcomes JTL-Software-GmbH needs from this hire.

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