Senior Dev-Ops & Infrastructure Engineer

Location:
Office based in Bratislava, remote with once per week/month working day in office

Languages:
Slovak & English (Proficient)

We are a focused, agile team of 20-30 people driving the future of energy. We operate as a B2B service provider across Slovakia and the Czech Republic, with active expansion into Ukraine, Bulgaria, and Austria.

Our core business is
intelligent energy management
. We manage batteries and energy resources, trade on electricity markets to generate revenue for clients, and help stabilize distribution networks to reduce reliance on fossil fuels.

We are looking for a
Senior Dev-Ops & Infrastructure Engineer
who wants to own the infrastructure that keeps a real-time energy grid running. You will build and maintain the cloud platform, CI/CD pipelines, and observability stack that our engineers and data scientists depend on every day.

The Tech Stack

We use modern tools to solve complex, high-frequency data problems. Everything runs on AWS, single provider, single region, fully infrastructure-as-code.

Domain

Technologies

Compute
ECS Fargate, AWS Lambda, AWS Batch

Networking
VPC, NAT gateways, ALB, Transit Gateway, IPSec VPN, OpenVPN

Data & Messaging
TimescaleDB, MSK (Kafka), Glue Schema Registry, S3

Device connectivity
AWS IoT Core, ACM Private CA

Observability
OpenSearch, Prometheus, Grafana, ElastAlert2, CloudWatch

IaC & Config
Terraform, Terragrunt, Ansible

CI/CD
GitHub Actions, Docker, ECR

Security
Secrets Manager, KMS, CloudTrail, Google SSO

What You Will Do

• Operate & Maintain: Administer GNU/Linux based VMs and keep our production environment healthy and secure.
• Containerize: Build, maintain, and deploy Docker containers to our VMs and orchestration platforms (ECS/Fargate).
• Automate Infrastructure: Design and maintain Terraform/Terragrunt modules and Ansible playbooks to provision and manage AWS infrastructure.
• CI/CD Ownership: Build and improve CI/CD pipelines (GitHub Actions) so deployments are fast, safe, and repeatable.
• Observe & Alert: Set up and maintain monitoring/alerting with Grafana, Prometheus, ELK, and OpenSearch to catch issues before they impact customers.
• Collaborate: Work closely with backend engineers and data scientists to support their deployment and infrastructure needs.

Must Haves

• Linux Fundamentals: Solid experience operating and maintaining GNU/Linux based VMs.
• Scripting: Comfortable working in the terminal with Python/Bash scripts.
• Containers: Hands-on experience with Docker — creating, maintaining, and deploying containers to VMs or an orchestration platform.
• Data Formats: Working knowledge of JSON, XML, YAML.
• CI/CD: Understanding of CI/CD concepts and experience with CI/CD pipelines.
• Language: Fluent in Slovak and English.
• Independence: You are a problem-solver who can work independently and as part of a team.
• EU Eligibility: You must be eligible to work within the European Union.
• Culture Fit: We have a strict “No A**hole” policy. We are a friendly bunch, and we want to hire someone we’d genuinely enjoy having a coffee (or beer) with.
• Experience with Terraform/Terragrunt and Ansible automation.
• Deeper knowledge of the AWS ecosystem
• Networking stack knowledge: firewalls, routing/NAT, load balancers/failovers.

Nice to Have

• Experience with Ansible automation.
• Exposure to ML-Ops.
• Security domain knowledge: X.509 certificates, SSH/PGP, Basic Auth/OAuth/SSO SAML.
• Background in energy, IoT, AI, or algorithmic trading.

What We Offer

• Flexibility: Work from our shared office in Bratislava (great for collaboration) or fully remote.
• Real Impact: Your infrastructure directly keeps our green energy platform running.
• Freedom: We prioritize results over micromanagement. You will have the freedom to choose the right tools for the job.
• Team Vibe: A flat structure, open communication, and employee shares in the company.

‹ Senior Software Engineer (Java/Python)