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.
Senior Director of Engineering leading the Unified Automation and Activations team at Salesforce. Responsible for shaping and executing the strategic vision for automation and agents driving business impact.
Senior Software Developer contributing to intelligent, secure systems for manufacturing operations. Collaborating with R&D and production teams to enhance software capabilities in a hybrid environment.
Software Engineer at TrainHeroic developing technology for athletes and coaches. Collaborating on core product features and solutions to improve user experience and performance.
Senior Software Engineer developing Agentic AI applications and collaborating with product management at Red Hat. Involved in coding, testing, and ensuring high code quality within AI/ML products.
IT Risk and Management Lead Staff Engineer at R1 supports audit compliance and automates user access reviews, ensuring regulatory adherence in healthcare revenue management.
Principal Engineer responsible for membrane element design and optimization at ZwitterCo. Leading cross - functional product development and mentoring teams for advanced materials in water treatment.
Full Stack Developer Intern at ServiceLink focusing on creating new digital experiences for borrowers. Collaborate on product features with an emphasis on middle - tier/API development.
Software Developer designing and developing control system software for unmanned systems within HII's Mission Technologies division. Engaged in optimizing naval mission management tools through innovative solutions.
AV Safety Data Reporting Engineer ensuring all safety data is accurately gathered and analyzed for compliance. Collaborating with internal teams to implement innovative data processes for safety operations.
Software Analyst developing and maintaining automotive claims systems at Porto, involved in system integrations and ensuring data security and performance.