Jiajun Ye

Jiajun Ye

About

Detail

IT Support
Spain
Contact Jiajun regarding: 
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Full-time jobs

Timeline

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school
Education

Résumé

Jobs verified_user 0% verified
  • Shalion
    IT Support
    Shalion
    Jul 2026 - Current (4 months)
  • Proficio
    Information Security Analyst
    Proficio
    Jun 2025 - May 2026 (1 year)
    • Monitored and triaged high-volume security alerts across Elastic Stack, Microsoft Sentinel, and Splunk, separating credible threats from false positives to support timely incident response.
    • Queried raw firewall and endpoint telemetry using ES|QL (Elasticsearch Query Language), SPL (Search Processing Language), and KQL (Kusto Query Language) to investigate suspicious activity and accelerate the initial threat assessment.
    • Documented investigation steps, indicators of compromise, and root-cause evidence to enable clear escalations to Tier 2 and Tier 3 analysts.
    • Built centralized Kibana dashboards with ES|QL and interactive time-series visualizations, improving log analysis workflows and speeding up Tier 1 alert triage.
  • Mango
    Warehouse Assistant
    Mango
    Jun 2025 - Sep 2025 (4 months)
    • Retrieval of items from storage.
    • Preparation of products for customer shipment.
    • Maintenance and organization of the warehouse environment.
  • L
    Shop Assistant
    LE LEJUN SL
    Jun 2024 - Jul 2024 (2 months)
    • Customer service.
    • Point of Sale (POS).
    • Inventory management.
    • Store maintenance.
  • I
    IT Technician
    Institut Maria Espinalt
    May 2023 - Apr 2024 (1 year)
    • Resolved technical issues for internal and external users through ticketing systems, ensuring timely support and minimal disruption to daily operations.
    • Explained technical issues and solutions in clear, actionable terms to help non-technical users resolve problems with confidence.
    • Maintained strong user satisfaction by providing proactive status updates and following through until issues were fully resolved.
    • Provisioned, configured, and deployed enterprise applications, Windows and Linux operating systems, and productivity tools across company devices.
    • Managed software lifecycle tasks, including security patching, version upgrades, and system backups, while minimizing downtime and service interruptions.
Education verified_user 0% verified
  • I
    Institut Tecnològic de Barcelona — Vocational Education and Training in Computer Systems and Network Administration, Cyb
    Jan 2024 - Current (2 years 10 months)
    Vocational Education and Training in Computer Systems and Network Administration, Cybersecurity, Information Technology
  • I
    Institut Tecnològic de Barcelona — Vocational Education and Training in Microcomputer Systems and Networking Information
    Jan 2022 - Dec 2024 (3 years)
    Vocational Education and Training in Microcomputer Systems and Networking , Information Technology
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