Dharmarus Rizal Email & Phone Number

San Jose, CA, US

Campbell, CA, US

• Mainly responsible for scalable distributed architecture of ChargePoint global cloud software services that are used daily by millions of EV drivers and charging devices in North America and Europe.
• Architect and develop MapCache distributed server clusters that serve millions per hour queries from mobile apps (Android and iOS), car apps (Android Auto and CarPlay), web browsers (https://driver.chargepoint.com) for.
• Design and develop MapCache in-memory geographically-indexed statistics of real-time device statuses with distributed data replication across server cluster nodes for high availability and fault tolerance.
• Architect and develop scalable distributed event processing server clusters utilizing Cassandra, Kafka and ZooKeeper to process tens of millions of transaction events per hour from charging devices, and deliver real.
• Architect and develop a horizontally scalable distributed WebSocket server cluster for resilient network communications with hundreds of thousands of EV charging devices using persistent WebSocket TCP/IP connections.
• Design and develop distributed message routers and device protocol translators for scalable, device-agnostics, low-latency WebSocket communications with devices, to allow rapid application development by using simple.

San Jose, California, US

• Introduced Enterprise Service Bus (ESB) technology to Marketo email campaign processing to decouple Marketo campaign processors and Mail Transfer Agent (MTA) server cluster; hence allowing asynchronous email sending.
• Designed and dev. high volume email campaign processing with Apache ServiceMix open source ESB for 1600+ customers in multi tenant SaaS environment in 3 data centers.
• Designed and impl. message queuing with ActiveMQ to support multiple quality of service for batch, transactional and test mailings.
• Designed and dev. multi-staged message routing with SOAP WS and SFTP transports using Apache Camel with different parallel processing models for batch, transactional and test emails.
• Designed and dev. messaging between PHP engine and ActiveMQ using streaming text Stomp protocol.
• Architected and worked closely with Operations team to implement high availability ESB server cluster with horizontally scalable message consumers and fully redundant persistent message store using MySQL databases and.

US

• Architected and developed private media sharing platform (www.circlous.com) based on private peer-to-peer networks and distributed storage. Circlous seamlessly combines data storage, bandwidth and computing resources.
• Designed and developed connection-creation engine that analyzed and established best-suited peer-to-peer connections between client applications that were accepted by existing firewall systems in place using UDP, TCP.
• Created and developed data communication protocol to carry complex and repetitive data types for system components to communicate over various transport mechanisms of HTTP, TCP or UDP.
• Designed and developed scalable and robust messaging service that leveraged the strength of UDP and HTTP protocols to efficiently deliver live messages such as user comments to large number of clients.
• Engineered real-time search capabilities in Java and SQL to find optimal source peers for receiving selected contents. The search algorithm was based on optimizing peer data that were captured in real time such as.
• Created robust and intelligent multi-host data transmission engine with algorithm for receiving media files from multiple available source peers.

US

• Responsible for creating technologies to meet new market demands in remote access applications including peer-to-peer networks, firewall traversal systems, media access and distribution, distributed file systems and.
• Architected and led engineering team to develop an innovative remote file access application that combined firewall-traversal peer-to-peer network technology and innovative distributed file system.
• Designed and implemented data communication platform that allowed Java-based client software to establish secure peer-to-peer connections for various remote access applications.
• Designed and led engineering team to develop caching, compression and communication system to allow optimized performance for remote file systems over wide area network.
• Managed engineering team to develop website using Servlets, JSP, Struts, JDBC, Hibernate and MySQL database for user web-based applications, account management and secure online payments.
• Led and managed engineering and quality assurance team to identify and investigate critical issues and created frameworks for all team members to contribute in creating solutions.

Stanford, CA, US

• Designed and led a team of graduate students to develop Stanford CyberLab, an online laboratory allowing students to perform physical experiments over the Internet. CyberLab was awarded 1999 Best Application of.
• Engineered software modules for devices, database systems and Java-based client applications to communicate for allowing users to observe, measure and control live experiments over the Internet.
• Designed and implemented data network protocol that enabled point-to-multi-point communications between users, devices and databases.
• Implemented robust Java-based server engine that routed data to enable live collaborations for students in performing laboratory experiment over the Internet.
• Designed and developed dynamic web-based notebook that allowed students to manage lab data and results such as measurements, device states, computation analysis and notes.

Ms, Electrical Engineering

Bs, Electrical Engineering