Experience

Acom Networks

• Telecommunications
• 1 - 100 Employee

• Senior Engineer

  • May 2017 - Present

  • To build carrier-grade high availability services in the AAA and 4G/5G/WiFi wireless field. • Carrier-grade High-Speed RADIUS Accounting Information Platform - Tech Lead and Project Owner - Built high-speed RADIUS cluster designed to receive Accounting message from PGW. - Implement distributed NoSQL structure and memcache based datastore. - Build in core network of Taiwan's top-three telecom operators. - Total serve over 20M subscribers for authentication, auto-login and identify for eMask Ordering System. - (Extend project) Coordinate with Taiwan's top cybersecurity company in older to provide various security solution in TW & JP . - (Extend project) Build in core network of HongKong's top telecom operators. - Technical Skills: RHEL / ESXi / 3GPP / RADIUS / PERL / PHP / MariaDB / Redis / GITHUB / Drone • Real-Time Mobile AI Mobile-IoT Platform - Tech Lead - Built Real-time AIoT Monitoring Platform designed to analysis IoT behavior and do scenario-based training. - Design data pipeline, ETL and learning algorithms that will trigger alert if pattern was abnormal. - Build in core network of Taiwan's top telecom operators. - Monitoring over 100K IoT devices and perform machine leaning mechanisms. - Technical Skills: RHEL / ESXi / PERL / PYTHON / MariaDB / Redis / K8S / GITHUB / Drone • WiFi-Calling & VoLTE add-value services (IMS AS Service) - Built High-availability cluster to integrate with CSCF via SIP protocol. - Perform location analysis (location-based services) of with 4G/3G cell id and SIP header. - Generate location based call number for emergency call (e.g. 911). Technical Skills: RHEL / SIP / PERL / MariaDB / Redis / Docker / GITHUB • Telecom WiFi AAA Platform - Provide MAC/UAM/EAPSIM/WPA2-enterprise/Roaming authentication method and use external web authentication. - Integrate with HSS via SS7 GW for EAPSIM. - Serve over million subs and stores. Technical Skills: IEEE 802.11 / 802.1X / RADIUS / PHP / MariaDB / SIGTRAN Show less



ELTA Technology Co., Ltd

• Technology, Information and Internet
• 1 - 100 Employee

• SW RD Manager

  • Jan 2014 - May 2017

  • Organized a team to design, survey and implement multi-media system and systemized requirements.# Projects• Large Media Warehouse System (ABYSS, http://www.abyss.com.tw/)- Project Owner & Team Leader- Built large-scale video warehouse cloud and multimedia streaming cloud.- Design architecture and network plan.- Design Hardware configuration include box, cpu, hard drive, hba and switch.- Design file system, communication protocol and data/control plan.- Embedded transcoding server to create thumbnail and perform online editing, transrate, transcode.- Implement dispatch server for live streaming and fast preview.- Design disaster recovery procedure and mechanism.- The cloud is a video-oriented cluster and designed to reduces cost for the media industry, total 2PB space for 4K video and over 10K hours media.• OTT Platform (ELTA OTT, https://eltaott.tv/)- Project Owner & Team Leader- Built OTT Platform to serve Live and VOD services and big events, e.g. Olympic games and FIFA.- Design architecture and VM plan.- Provide APIs, which generate video list, video information and streaming endpoint, to WEB GUI implementation. - Built proxy and cache server to offload traffic and build load balancer for load sharing.- Built big data analysis platform to record user behavior and analysis favorite video.- Uses over 40 VMs and with CDN to provide stable streaming quality and payment system.# Tech skillsCloud Platform- Azure / AWS / Digital Ocean / LinodeAnalysis tools- Hadoop, Spark, Hive, R, Pentaho(Kettle, Mondrian, Report, OLAP), Kafka- Crawler (perl/php)- Apache access logs analyse (perl)- Firewall logs analyse (hadoop mapreduce)- Radiator Radius (perl)- Google Analytics- Countly- CKANOSs- RHEL, CentOS, Ubuntu, FreeBSDProgramming Languages- Perl, PHP, Bash, R, Python, JAVA, C Databases- mysql, mariadb, mssql, mongodb, RedisCI CD-GitHub / GitLab / Gitea / Drone / Docker / Jenkins / HARBOR / K8S / Portainer Show less

• RD Engineer

  • Jun 2012 - Dec 2013