This is a remote position.

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

Deploy, configure and maintain WebLogic 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

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

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

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 (WebLogic / 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

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 WebLogic certification (OCP/OCM)
Good command of Thai

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

Oracle Developer - Middleware

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