Fredy Kusumah

Fredy Kusumah

$35/hr
Backend Engineer / DevOps / Software Architect
Reply rate:
-
Availability:
Hourly ($/hour)
Age:
35 years old
Location:
Yokohama, Kanagawa, Japan
Experience:
13 years
Fredy Dharma Kusumah Principal Architect / Lead Software Engineer / DevOps Specialist πŸ“Japan, γ€’- πŸ“ž(- |-| 🌐linkedin.com/in/fredydk/ QUALIFICATIONS ●​ 13+ years' experience in IT and 5 years delivering multinational projects across Thailand, Indonesia, Malaysia, Philippines, Singapore, and Japan. ●​ Tech Lead experience: Led a team of 10 backend engineers, improving task ownership and increasing delivery speed by 20% through mentorship programs, structured code reviews, and efficient stand-ups. ●​ Strong expertise in Java Spring Boot, microservices architecture, and RESTful API development. ●​ Proven leadership in setting clear technical roadmaps, architectural decisions, and best practices for engineering teams. ●​ Extensive experience in application integration using Apache Camel, Apache Kafka, and cloud-native architectures. ●​ Designed and optimized CI/CD pipelines using Jenkins, Bamboo, and Google Cloud Build, reducing deployment errors by 40%. ●​ Expertise in Kubernetes (AWS ROSA, GKE, OpenShift) for cloud-native deployments, with knowledge of container security best practices. ●​ Strong knowledge of database management, including Oracle, PostgreSQL, MySQL, and MongoDB. ●​ Proficient in monitoring & logging (Grafana, Prometheus, Elasticsearch, OpenSearch) and incident response management. ●​ Experience with networking, load balancing (Nginx), and authentication protocols (OAuth2, Kerberos, Red Hat SSO). ●​ Developed and maintained end-to-end ETL pipelines using Talend to integrate data from multiple sources (databases, APIs, flat files) into enterprise data warehouses. TECHNICAL EXPERTISE ●​ Programming & Scripting : Java, C#, Python, JavaScript, Go, Shell scripting ●​ Frameworks : Spring Boot, Django, Grails, ExtJS ●​ Cloud Platforms : Google Cloud Platform (GCP), AWS ●​ CI/CD & DevOps : Jenkins, Bamboo, Google Cloud Build, Helm ●​ Containerization : Kubernetes (GKE, OpenShift, AWS ROSA), Docker ●​ Infrastructure as Code (IaC : Ansible, Helm ●​ Messaging & Integration : Apache Camel, Apache Kafka, Google Cloud Pub/Sub ●​ Databases : Oracle, MySQL, PostgreSQL, MongoDB, Elasticsearch ●​ Performance Testing : JMeter ●​ Project Management Tools : Jira ●​ Authentication & Security : OAuth2, Kerberos, Red Hat SSO, CyberArk Conjur ●​ Monitoring & Logging : Grafana, Prometheus, Elasticsearch, OpenSearch, Fluentd PROFESSIONAL HIGHLIGHTS FinStadiumX, Japan as Senior Software Engineer | January 2025 – Present Key Deliverables: ●​ Integrated OpenSearch with Fluentd for real-time log management. ●​ Developed Go-based REST APIs to query application logs efficiently. ●​ Built monitoring and alerting systems using Django and WebSockets for proactive incident response. Technologies Used: Go, Python, PostgreSQL, OpenSearch, Fluentd Robert Walters Japan as Senior Software Engineer | July 2024 - December 2024 Key Project: Rakuten Travel ●​ Short-term engagement focused on enhancing and securing travel booking APIs within the Rakuten Travel ecosystem. ●​ Optimized API performance, improving request response times by 30% through load testing and query tuning. ●​ Implemented Kafka security enhancements, ensuring compliance with enterprise security policies. ●​ Developed automation scripts in Python to streamline configuration management. ●​ Contributed to application stability and performance tuning, working closely with internal teams. Technologies Used: Jenkins, Spring Boot, MongoDB, Oracle DB, Kafka, Python, Kerberos iZeno Sdn Bhd, Malaysia as Principal Architect | April 2019 – June 2024 Key Deliverables: ●​ Led a team of 10 engineers to drive DevOps & application modernization transformation, improving delivery speed by 20%. ●​ Implemented security best practices, including SAST & DAST scans in CI/CD pipelines. ●​ Architected and led the migration of legacy monolithic applications to Spring Boot microservices, deployed on OpenShift (Azure). ●​ Designed hybrid cloud services handling daily transactions using Spring Boot, Kafka, and Google Cloud. ●​ Developed high-traffic payment integration systems, reducing settlement times by 30%. ●​ Implemented CI/CD pipelines using CloudBees Core and Electric Flow, improving deployment efficiency by 40%. ●​ Reduced deployment times by 40% by optimizing infrastructure provisioning using Ansible. ●​ Secured Kubernetes workloads by integrating CyberArk Conjur for secret management and JFrog for image registry. ●​ Optimized MongoDB cluster synchronization, enabling real-time data replication between on-prem and Mongo Atlas. ●​ Migrated applications to the Red Hat OpenShift Platform, creating templates and configurations for deployment. ●​ Upgraded Red Hat SSO and customized user registration and management for integration with Singpass. ●​ Enhanced the AskPru chatbot application with JBoss EAP, Spring Boot, and Db2. ●​ Implemented Single Sign-On (SSO) using AWS Cognito integrated with Spring Boot services. Technologies Used: Spring Boot, OpenShift, Kubernetes, Kafka, Apigee, Jenkins, MongoDB, Google Cloud, Debezium, Istio, Kerberos PT. Trees Solutions, Indonesia as Managing Consultant | May 2015 – March 2019 Key Deliverables: ●​ Customized Oracle Sourcing Modules using Oracle Application Framework (OAF). ●​ Implemented Learning Management System (LMS) for employee development. ●​ Designed bank account splitting interfaces, improving compliance with financial regulations. Technologies Used: Oracle E-Business Suite, SQL, PL/SQL, XML, Java. PT. Emerio, Indonesia as Software Engineer | February 2014 – February 2015 Key Deliverables: ●​ Built and maintained Regional Supply Chain Financing System (RSCF) for enterprise banking. ●​ Provided ongoing support for the Regional Cash Management System (RCMS). ●​ Enhanced middleware for E-tax Bulk Payments, improving system reliability. Technologies Used: Java, Mule ESB, PL/SQL. PT. Saywa Trade Utama, Indonesia as Software Engineer | January 2012 - January 2014 Key Deliverables: ●​ Migrated the contracting module from Oracle Forms & Reports to a web application platform. ●​ Transitioned all runtime modules to the web platform for improved accessibility and performance. ●​ Developed a day trade module with features to handle institutional transactions. ●​ Modified account and stock settlement modules to ensure compliance with KSEI regulations. ●​ Developed a back-office stock trading system using Spring, ExtJS, Jasper Reports, and SQL Server 2008. Technologies Used: Spring, ExtJS, Jasper Reports, SQL Server 2008, Oracle Forms & Reports. ​ EDUCATION Bachelor of Information of Technology, Institut Teknologi Harapan Bangsa, Indonesia, 2011. Academic Achievements: ●​ Awarded the Rector’s Scholarship every semester. ●​ Served as an Assistant Lecturer for Computer Skills and IT Introduction courses. CERTIFICATIONS ●​ Google Cloud Associate Cloud Engineer ●​ Google Cloud Professional Cloud Engineer ●​ Atlassian Jira ACP-600 ●​ Atlassian Jira ACP-100 LANGUAGE SKILLS ●​ English – Business Proficient ●​ Japanese – Basic (JLPT N5 Equivalent) ●​ Indonesia – Native
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