Oracle Developer - Middleware

This is a remote position.

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 & WebLogic Operations

• 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

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 (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

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 WebLogic 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