Senior DevOps Engineer (Hybrid Cloud & Sysadmin Role)

Holisticon Insight is a division of http://nexergroup.com focused on IoT, AI, and advanced analytics. We assist our customers in developing IoT services, portals, and mobile apps and, above all, analyze data using AI and advanced analytics to reduce costs, streamline, and find new opportunities for the business. Our goal is to grow strong but rather in competencies than in numbers. We get things done and, on the way, we build a dynamic company culture to create the best place for our development. We love the atmosphere of a family business with its flat structure and self-organized teams where every opinion matters and influences our way of working

Check us out!

https://holisticon.pl/holisticon-insight/

This is a hybrid Sysadmin & DevOps role (with focus on DevOps) that supports our client's both internal and public-facing infrastructure. The ideal candidate is comfortable working across cloud infrastructure, Kubernetes deployments, automation pipelines, and some traditional system administration tasks. You’ll be the go-to person for managing deployments, upgrading and securing VMs, handling certificate renewals, and supporting a mix of cloud-native and legacy systems.

Responsibilities

• Manage and upgrade Kubernetes clusters on Azure (AKS) — deploy and maintain internal and public-facing applications, including Kafka.

• Automate deployment workflows using GitHub Actions and other CI/CD tools.

• Perform classical system administration tasks on Linux (Ubuntu) and Windows VMs, including:

  • OS updates (periodic patching, security hardening)

  • Rightsizing and optimizing resource usage (turning off unused VMs, scaling Kubernetes pods)

  • Managing certificates for authentication and secure communication.

• Support monitoring and alerting platforms (Datadog), assist with migrating additional systems onto Datadog.

• Assist with updating GeoServer-based applications — this is a nice-to-have

• Collaborate with multiple developer teams who currently manage their own deployments and infrastructure.

You might be the perfect match if you have:

• 7+ years of commercial experience in a DevOps role; some system administration experience or willingness to take on sysadmin responsibilities is a strong plus

• Solid experience with Kubernetes and Azure Kubernetes Service (AKS) in production environments

• Hands-on experience building and managing CI/CD pipelines, preferably with GitHub Actions / workflows

• Familiarity with Kafka, Debezium, or similar event streaming platforms

• Prior exposure to Datadog monitoring and alerting platform

• Comfortable managing cloud infrastructure in Azure, including VMs, networking, security hardening, and rightsizing resources

• Ability to perform both automation tasks and manual system interventions as needed

• Basic scripting/automation skills with Bash, PowerShell, or similar languages

• Excellent communication skills in English

• Location within Poland or other EU countries

Nice to have:

• Strong Linux sysadmin experience (Ubuntu preferred)

• Exposure to GeoServer or other geospatial software (not mandatory)

• Experience managing Windows servers, including IIS and certificate renewals

By joining Holisticon Insight you will get:

• Life insurance

• Multisport card

• Fully remote job

• Private medical care

• Flexible working hours

• B2B or contract of employment

• Amazing integration events on a regular basis

• Training budget (e.g. Microsoft Azure Certifications)

• Opportunity to impact our company culture build-up

• Work equipment (laptop, 2 monitors, and accessories)

Our recruitment process consists of the following steps:

1️⃣ Initial chat with Julia, our recruiter – 30 minutes

2️⃣ Technical interview with our expert – 30-45 minutes

3️⃣ Final technical interview with the client – 1 hour