Apply: https://www.linkedin.com/jobs/view/4470137521/
Vaulsys is a technology company specializing in payment solutions, providing an API-based omnichannel platform covering POS/ATM switching, card management, fraud management (AML/KYC), API gateway, mobile wallet, and open banking APIs.
Vaulsys is hiring a Software Support Engineer to act as the primary 24/7 point of contact for customers on a high-volume financial transaction platform, handling real-time monitoring, incident response, and root cause analysis.
Responsibilities: provide 24/7 on-call production support and handle P1/P2 incidents; troubleshoot Java (Jetty-based) applications including thread/heap dumps and JVM tuning; support Oracle database troubleshooting; investigate ISO 8583 payment message flows, authorization, clearing and settlement issues; perform log analysis via Elastic/OpenSearch; maintain runbooks and incident reports.
Requirements: strong Java production support experience; Oracle/PostgreSQL database troubleshooting; JVM internals knowledge; fintech domain knowledge (ISO 8583, PCI DSS, Visa/Mastercard) highly preferred; 2-5 years experience. Evening shift (12 PM-9 PM PST), apply to hr@vaulsys.net by Sept 30, 2026. On-site, Karachi.
To apply for this job please visit www.linkedin.com.
