Implement and maintain infrastructure for a digital banking product using AWS EKS kubernetes clusters, EC2, Aurora PostgreSQL, MSK Kafka Cluster, Redis, DynamoDB, CloudFront, WAF, S3, ALB, NLB, Github Actions for CI/CD, MongoDB, Grafana Dashboard, Loki, Tempo, Oncall, Thanos, Prometheus, Tyk Gateway, OpenVPN, HA Proxy, and terraform for the IaC.

- Lead a team to implement infrastructure for a digital finance product using AWS ECS Fargate, EC2, API Gateway, Lambda, Aurora PostgreSQL and MySQL, DynamoDB, Redis, SQS, S3, ALB, NLB, CloudFront, WAF, Google Firebase, Bitbucket pipelines for CI/CD, MongoDB, ElasticSearch, Elastic APM, NewRelic, Scalyr, FluentD, Grafana, JumpCloud, nginx and small nodejs script for proxy, and terraform/terragrunt for the IaC- Developed small utility for developer to manage AWS ECS container using Golang… Show more - Lead a team to implement infrastructure for a digital finance product using AWS ECS Fargate, EC2, API Gateway, Lambda, Aurora PostgreSQL and MySQL, DynamoDB, Redis, SQS, S3, ALB, NLB, CloudFront, WAF, Google Firebase, Bitbucket pipelines for CI/CD, MongoDB, ElasticSearch, Elastic APM, NewRelic, Scalyr, FluentD, Grafana, JumpCloud, nginx and small nodejs script for proxy, and terraform/terragrunt for the IaC- Developed small utility for developer to manage AWS ECS container using Golang and AWS SDK (https://github.com/aswadsun/svc-go)- Designed and developed AWS SQS custom metrics - backlog per capacity unit using AWS Lambda with Golang. This custom metric is used as parameter for ECS autoscaling based on SQS backlog messages- Designed and developed AWS ECS task monitor using AWS Lambda with Python 3, DynamoDB, and Step-functions- Designed and developed grafonnet-aws-metrics jsonnet/grafonnet library as terraform modules for automatic creation of grafana dashboard in AWS ECS project- Collaborated with application developers in various projects, to implement the infrastructure requirements mostly using AWS technology stacks, bitbucket pipelines for the CI/CD, and terraform for the IaC Show less

- Implemented Disaster Recovery Plan, FreeNAS file servers, website and webstore (AWS EC2, AWS RDS MySQL, Debian, Nginx, CloudFlare), IThelpdesk ticketing (osTicket), Project Management and Accounting Module of Microsoft AX 2012- Maintained Microsoft AX 2012 AOS Server, report server, AX Business Connector web service, Microsoft Windows Server 2012R2, 2008R2, and Microsoft SQL Server 2008R2

Developed cloud based smart integrated parking management system, utilizing AWS RDS MySQL, AWS EC2, Debian, PHP FPM, Laravel Eloquent,JavaScript, Bootstrap, Nginx, Python 3 in Raspberry Pi 3B, Mifare, and Long Range RFID system

Implemented Microsoft Dynamics NAV 2009 R2 (Navision) ERP, Windows Server 2008 R2 Active Directory, Disaster Recovery Plan, Zimbra Collaboration Suite, GLPI helpdesk support, PFSENSE internet firewall, IT hardware and software inventory control, and IT internal control policies and procedures according to ISO 9001:2008 requirements

Implemented Disaster Recovery Plan, IT Inventory Control, Linux file sharing server, IPCop Internet Gateway, and telecommunication infrastructure

- Set the information system annual strategic plans and budget aligned with company objectives.- Compiled and updated information system internal control procedures, information system disaster recovery and business continuity plans.- Implemented redundant servers with backup and replication unit and weekly-rotation off-site backup strategy which store tape backup cassettes in secure remote location. - Implemented information system hardware and software inventory management… Show more - Set the information system annual strategic plans and budget aligned with company objectives.- Compiled and updated information system internal control procedures, information system disaster recovery and business continuity plans.- Implemented redundant servers with backup and replication unit and weekly-rotation off-site backup strategy which store tape backup cassettes in secure remote location. - Implemented information system hardware and software inventory management, utilizing computer hardware tagging, software licenses management and application software standard list. - Actively involved in company crisis management team specific in information system crisis by providing crisis management and coordination in the event of system failures and composition of emergency response procedures for computer breakdown or sabotage.- Actively involved in the process and after the certification of ISO9000:2000 for the company as part of company management team. Attended the Key Performance Indicator Development training with the result of the creation of KPI for Information System Department.- Implemented Sage Accpac ERP, Production Information System, Computerized Maintenance Management System, and HR payroll applications. Show less

- Installed, configured, and maintained: finger print based access control system, computer network infrastructure (with several Cisco 1720 routers, Cisco Catalyst 2950 series switches, and network printers), and also Panasonic KX-TDA200 PBX telecommunication system.- Created and modified several business applications custom reports using Business Objects Crystal Reports XI.- Designed and developed Sodim permeability meter data logger and barcode labelling application using Java… Show more - Installed, configured, and maintained: finger print based access control system, computer network infrastructure (with several Cisco 1720 routers, Cisco Catalyst 2950 series switches, and network printers), and also Panasonic KX-TDA200 PBX telecommunication system.- Created and modified several business applications custom reports using Business Objects Crystal Reports XI.- Designed and developed Sodim permeability meter data logger and barcode labelling application using Java, utilizing Swing user interface, Barbeque barcode library, JavaComm API, and Java WebStart technology. Show less

- Lecturer of Advanced Applied Networking and Digital Logic Circuits subjects.- Advisor and Examiner of IT BBA program students’ final course works.- Advisor of student digital club activities.

- Provided technical support, helpdesk services, computer network, hardware, software, and Windows/Linux server installation and configuration for several companies and institution in Medan, such as Majestyk Bakery and Cake Shop, PT Growth Pakanindo Special, and Nanyang Zhi Hui Modern Indonesian School. - Designed and developed several embedded systems projects such as newspaper printer counter, configurable dot matrix digital message board for PDAM Tirtanadi, public water company in Medan,… Show more - Provided technical support, helpdesk services, computer network, hardware, software, and Windows/Linux server installation and configuration for several companies and institution in Medan, such as Majestyk Bakery and Cake Shop, PT Growth Pakanindo Special, and Nanyang Zhi Hui Modern Indonesian School. - Designed and developed several embedded systems projects such as newspaper printer counter, configurable dot matrix digital message board for PDAM Tirtanadi, public water company in Medan, patrol control system, Microchip PIC development board, coin counter controller board, extendable quiz master system, and automatic multi-schedule multi-tones school bell for Nanyang Zhi Hui Modern Indonesian School, using Microchip PIC16F84, PIC16F873, PIC16F876A and Atmel AT89C51 microcontrollers.- Designed and developed hospital billing system using Borland Delphi, utilizing QuickReport and Paradox database system. Show less

- Supervised technical support and helpdesk service staffs.- Maintained DOS based Clipper accounting application, include new report creation and modification, as well as problems troubleshooting.- Configured and maintained Intel 8085 based feed mill batching controllers and Intel 8051 based breeding farm breed machine controllers.

- Developed multi-user general ledger and inventory control applications using CA Clipper 5.2.- Designed and built viscosity meter interfacing circuit to PC using ADC0808 and its application using CA-Clipper and assembly language for PT Goodyear Indonesia in Pematang Siantar, Sumatera Utara.