About the role

  • Unix/Linux Specialist troubleshooting OS, app, and code issues for enterprise clients. Diagnosing problems in complex client stacks and collaborating with engineering teams in Cluj-Napoca.

Responsibilities

  • Perform deep Unix/Linux troubleshooting across production environments, including complex, multi-tier application stacks;
  • Read, understand, and analyze application source code to: Trace application flows and execution paths;
  • Identify logical flaws, performance bottlenecks, and potential bugs;
  • Correlate code behavior with system-level symptoms.
  • Troubleshoot software systems end-to-end, spanning: Operating system and process-level issues;
  • Application runtime behavior;
  • Configuration, dependencies, and integrations.
  • Diagnose and resolve complex incidents, including emergency escalations, after-hours calls, and weekend support rotations;
  • Develop and maintain internal diagnostic, automation, and support tools, primarily using Python and shell scripting;
  • Participate in complex system upgrades, migrations, and environment changes, ensuring stability and minimal downtime;
  • Understand and troubleshoot networking concepts including TCP/IP, DNS, load balancing, firewalls, and service connectivity;
  • Quickly absorb and support application-level infrastructure knowledge across multiple client environments;
  • Collaborate closely with engineering, operations, and customer-facing teams to improve platform reliability and operational excellence.

Requirements

  • Expert-level Unix/Linux knowledge with strong hands-on troubleshooting experience
  • Ability to read, understand, and reason about source code written in common backend languages (Python; C# / .NET Core)
  • Solid understanding of application architecture and execution flows
  • Proven ability to identify logical errors, misconfigurations, and potential bugs by correlating logs, metrics, code, and system behavior
  • Strong troubleshooting methodology and systems thinking, with a bias toward root-cause analysis rather than workarounds
  • Working knowledge of networking fundamentals and distributed systems concepts
  • Experience operating in high-pressure, customer-impacting environments.

Benefits

  • Medical Insurance MedLife
  • Learning & Development
  • Unlimited Microsoft training & certifications
  • Sports benefit
  • Bonuses and gift cards
  • Meal vouchers
  • Extra vacation days/annual leave
  • Yearly bonuses based on the company’s performance
  • Incentive Units/Shares Plan

Job title

UNIX/Linux Specialist

Job type

Experience level

Mid levelSenior

Salary

Not specified

Degree requirement

No Education Requirement

Location requirements

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