Oracle Developer - Middleware

Integration Development

• Design, develop and maintain integrations between Oracle RMS/RPM/ReSA/ReIM and internal and external systems, using batch, message-based (RIB/JMS/AQ), MFT and API (REST/SOAP) patterns
• Develop and enhance interface-related Oracle objects (PL/SQL packages, procedures, triggers, views) and server scripts (Shell, Python, SQL*Loader)
• Perform impact analysis before changing production interfaces or data structures
• Contribute to data pipelines and workflow orchestration (e.g., Argo Workflows) for cross-system data flows
• Produce technical design documents, interface specifications and runbooks Middleware Platform & Web. Logic Operations
• Deploy, configure and maintain Web. Logic domains and clusters in high-availability (HA) and disaster-recovery (DR) configurations, ensuring installations meet standards and technical specifications
• Tune JVM, thread pools, JDBC data sources and JMS resources for high-throughput retail transactions
• Monitor middleware and application health using tools such as Dynatrace, Grafana, NMON or open-source equivalents, and act on alerts before they affect stores
• Support ORDS-based REST APIs, including connection-pool, authentication, availability and performance troubleshooting
• Work with Infrastructure on load balancing and edge components (F5, ALB/NLB, WAF, DNS) and on identity integration (OID/OAM, LDAP, PAM)
• Perform scheduled maintenance, patching and security compliance activities, following the existing change management process
• Automate application deployments, housekeeping and routine operations using Shell, Ansible and OCI CLI
• Help design DR strategies and plan and execute failover tests to confirm RTO/RPO targets Production Support (L2/L3)
• Trace and troubleshoot integration failures end to end across source applications, Oracle RIB/JMS/AQ, batch processes, APIs and Oracle Retail target tables; reconcile message status with actual business data
• Monitor and recover failed or stuck RIB messages, adapters, queues and batch jobs, using controlled retry, replay and restart procedures that prevent duplicate or missing transactions
• Investigate Oracle Retail batch dependencies and failures using Automic/UC4, application logs, restart tables, file processing status and database evidence
• Lead root-cause analysis (RCA) for critical incidents and put preventive measures in place Delivery & Collaboration
• Participate in Retail system migration and modernization initiatives, including cloud re-platforming and database migration
• Work with QA on testing (SIT/UAT) and with DevOps on CI/CD pipelines and deployments
• Collaborate with Development, Operations, Infrastructure and Business teams across the application lifecycle
• Run knowledge-transfer sessions and provide technical clarification to the team and offshore partners Requirements Bachelor's or Master's degree in Computer Science, Computer Engineering, Information Technology or a related field, or equivalent work experience
• 5–8 years in Oracle development, application support or DevOps, preferably in retail or another high-volume business
• Strong PL/SQL and SQL skills, including SQL tuning and performance troubleshooting
• Hands-on experience with Oracle Middleware (Web. Logic / Fusion Middleware), including administration and performance tuning
• Hands-on integration experience with Oracle RIB, SOA Suite, OSB, JMS/AQ or equivalent
• Solid understanding of integration patterns (pub/sub, file-based, REST/SOAP APIs) and data formats (XML, JSON, CSV)
• Strong Linux/Unix skills with Shell scripting; Python is a plus
• Experience with monitoring and diagnostic tools (e.g., Dynatrace, Grafana, NMON)
• Strong analytical thinking and the ability to handle production issues calmly under pressure
• Good English communication skills for working with teams and stakeholders Preferred
• Experience with Oracle Retail (RMS, RPM, ReSA, ReIM, RWMS, SIM) and batch scheduling with Automic/UC4
• Familiarity with Oracle identity and transfer components (OID, OAM, MFT)
• Experience integrating with POS, e-Commerce platforms (e.g., Magento) or WMS
• Domain knowledge in retail, supply chain, commercial, finance or payment processing
• Knowledge of F5 load balancing, ALB/NLB, WAF, DNS, LDAP, PAM and NIS
• Experience designing or testing HA/DR setups against RTO/RPO targets
• Familiarity with cloud platforms (Tencent Cloud, OCI), containers/orchestration (Kubernetes, Argo) and automation tools (Ansible)
• Experience with PostgreSQL or database migration projects
• Experience working with offshore or vendor teams
• Oracle Web. Logic certification (OCP/OCM)
• Good command of Thai Benefits At SmartOSC, we offer the best to your values: Attractive salary package. Contract duration: 12 months Working model: Remote global Work closely with teams in Thailand and Vietnam Follow Thailand / Vietnam business hours Full-time project engagement with expected availability during business hours when support or meetings are required Open to candidates who can work effectively in a remote and cross-country collaboration environment Working in one of the largest e-commerce agencies in Southeast Asia – Professional English environment. Professional and international English-speaking environment Opportunity to build high-level and valuable connections Potential onsite opportunities/ business travel in Thailand or Vietnam