System & Data Engineer (Linux / SQL Area)

HeadHR; Łódź; On-site; PLN 120,000 - 180,000; Full time

Benefits offered by this job

Attractive salary

Exposure to new technologies

Internal and external training access

Company phone for private use

No dress code

Job summary

A recruitment agency is seeking a skilled IT specialist for maintenance and development of Linux and Windows server environments. Responsibilities include database administration and the design of data warehouses, along with real-time data processing systems. The ideal candidate should possess strong skills in Linux and SQL, in addition to automation tools. The role offers a B2B contract with a competitive salary and exposure to new technologies in a casual work atmosphere in Łódź.

Qualifications

• Very good knowledge of Linux systems for installation, configuration, and security.
• Basic knowledge of Windows Server administration.
• Experience in virtualization environments like Proxmox or VMware.
• Very good knowledge of SQL and database administration.

Responsibilities

• Maintenance and development of Linux and Windows server environments.
• Administration of database environments, including performance optimization.
• Design and maintenance of data warehouses.
• Maintenance and development of real-time data processing systems.
• Collaboration with BI and development teams.

Skills

Knowledge of Linux systems (RHEL/Debian)

Windows Server administration

Virtualization experience (Proxmox, VMware, Hyper-V)

SQL

Databases knowledge (PostgreSQL, MSSQL, MySQL/MariaDB)

Networking concepts (TCP/IP, VLAN)

Automation and scripting (Bash, Python, PowerShell)

Communication in English

Good organizational skills

Python

PowerShell

English communication

Problem solving

Category B driving license

Tools

Ansible

Grafana

Zabbix

Docker

Kubernetes

GitLab

Job description

Requirements:

• Very good knowledge of Linux systems (RHEL/Debian and derivatives) - installation, configuration, hardening, administration, security.
• Basic, practical knowledge of Windows Server administration.
• Experience with virtualization (e.g. Proxmox, VMware vSphere, Hyper‑V).
• Very good knowledge of SQL.
• Practical knowledge of databases: PostgreSQL, MSSQL, Apache Doris, MySQL/MariaDB.
• Understanding of basic networking concepts (TCP/IP, routing, VLAN, firewall).
• Experience in automation and scripting (Bash, Python, PowerShell).
• Communicative knowledge of the English language (reading technical documentation, communication with external services).
• Good organizational skills and ability to solve problems independently or as part of a team.
• Category B driving license.

Additional advantages:

• Knowledge of automation and monitoring tools: Ansible, Grafana, Zabbix, Docker, Kubernetes, GitLab.
• Understanding of data modeling principles in analytical environments (DWH).
• Familiarity with Apache Flink, Kafka, CDC, Zookeeper

Kogo poszukujemy?

Responsibilities:

• Maintenance and development of Linux (mainly) and Windows server environments - configuration, monitoring, updates, troubleshooting.
• Administration of database environments (e.g. PostgreSQL, MSSQL, Apache Doris, MySQL/MariaDB) - installation, configuration, performance optimization.
• Design and maintenance of data warehouses (Data Warehouse) - loading, transformation, and integration processes of data from various sources.
• Maintenance and development of real‑time data processing systems (Apache Flink, Kafka, CDC, Zookeeper).
• Participation in IoT projects - creating and developing data collection systems from devices (MQTT, Modbus).
• Collaboration with BI and development teams in designing data structures, SQL queries, and reports.
• Creation and updating of technical documentation (pre‑ and post‑implementation).

We offer:

• Attractive salary (b2b contract)
• Exposure to new technologies
• Work fully in the office in Łódź
• Implementation and maintenance of multiple projects
• Getting to know various IT environments and infrastructures
• Access to internal and external training
• Integration meetings and work in a casual atmosphere (you can check on social media what we mean)
• Subsidies for training and courses
• Integration meetings
• Company phone for private use
• No dress code