HPC User Support Specialist at GRNET supporting researchers and engineers utilizing national HPC resources. Troubleshooting user requests and optimizing workflows in a high-performance computing environment.
Responsibilities
Respond to and resolve HPC user support tickets
Assist users with job submission, scheduling, and workflow optimization
Support users in accessing systems, storage, and HPC software environments
Investigate and troubleshoot issues related to jobs, applications, and resource usage
Help users improve the performance of their workloads, including profiling and basic code optimisation support
Run and analyse application benchmarks and scaling tests to understand performance bottlenecks
Contribute to onboarding, user guides, and technical documentation
Participate in user training activities (webinars, tutorials, hands‑on sessions)
Collaborate with system administrators to identify and resolve system-side issues impacting users
Provide feedback for improving HPC services and user experience
Requirements
Experience using Linux environments and command-line tools
Familiarity with HPC concepts such as modules, batch systems, job schedulers, and parallel computing
Exposure to HPC job schedulers (preferably Slurm)
Understanding of scientific computing workflows and common programming languages (e.g., Python, C/C++, Fortran, R)
Experience with HPC application execution or user support in a technical environment
Interest or experience in performance profiling (e.g., gprof, perf, Intel VTune, ARM MAP)
Ability to troubleshoot issues involving jobs, user environments, or software modules
Experience with ticketing or issue tracking tools (e.g., JIRA, Redmine, ServiceNow)
Good knowledge of Greek and English
Will be considered a plus
Hands-on experience running workloads on HPC systems
Familiarity with profiling and performance tuning tools
Experience with containers for HPC (e.g., Apptainer/Singularity)
Knowledge of parallel programming (MPI, OpenMP)
Exposure to scientific domains (e.g., computational physics, AI/ML, bioinformatics)
Experience preparing training material or teaching technical subjects
MSc or PhD in a STEM field
Benefits
Opportunities for international collaborations
Competitive remuneration package
Continuous professional development and training
Modern, friendly and innovative working environment
Customer Service Representative providing support and expertise in design for online printing services. Engaging with US clients, resolving inquiries, and ensuring high satisfaction in Tunis.
Support travelers by providing information after booking tours and enhancing their experience before departure for EF Go Ahead Tours. Prioritize tasks efficiently under pressure with attention to detail and excellent customer service.
Digital Support Specialist at KCB group, providing leadership in support and improvement of digital channels. Handling upgrades, enhancements and ensuring system compliance and service excellence.
Customer Service Representative liaising between customers and cross - functional teams for timely processing of RFQs. Building long - lasting customer relationships for an aircraft parts distributor.
Customer Experience Representative handling inbound customer calls related to underwriting and billing issues for AssuranceAmerica. Providing personalized support and problem - solving solutions in a fast - paced environment.
Customer Experience Agent managing customer inquiries at a digital finance company. Involves resolving issues, providing support, and maintaining customer relationships in Manchester.
Support Specialist assisting developers with account and billing questions at Replit. Collaborating with global teams to enhance user experience and product support.
Supervisor overseeing HCSC Customer Service team operations and performance. Coaching staff and ensuring alignment with strategic goals in a supportive environment.
Customer Service Department Manager ensuring legendary customer service experience at Uline. Empowering teams and improving daily operations in multiple Customer Service departments.