고재훈 Email & Phone Number

South Korea

Gyeonggi, South Korea

● 𝐃𝐞𝐯𝐞𝐥𝐨𝐩 𝐀𝐖𝐒 𝐀𝐭𝐡𝐞𝐧𝐚-𝐥𝐢𝐤𝐞 𝐬𝐞𝐫𝐯𝐞𝐫𝐥𝐞𝐬𝐬 𝐚𝐝-𝐡𝐨𝐜 𝐪𝐮𝐞𝐫𝐲 𝐬𝐞𝐫𝐯𝐢𝐜𝐞 - Execute user-specified SQL using Trino cluster pool - API-compatible to Trino - Authentication integrated with IAM - key pair as username/password - Build on Kubernetes/Calico - Seamless developer experience by having consistent environment from local PC to production env . Vagrant-based single-node k8s, locally running Jenkins, Docker registry, integrated with… Show more ● 𝐃𝐞𝐯𝐞𝐥𝐨𝐩 𝐀𝐖𝐒 𝐀𝐭𝐡𝐞𝐧𝐚-𝐥𝐢𝐤𝐞 𝐬𝐞𝐫𝐯𝐞𝐫𝐥𝐞𝐬𝐬 𝐚𝐝-𝐡𝐨𝐜 𝐪𝐮𝐞𝐫𝐲 𝐬𝐞𝐫𝐯𝐢𝐜𝐞 - Execute user-specified SQL using Trino cluster pool - API-compatible to Trino - Authentication integrated with IAM - key pair as username/password - Build on Kubernetes/Calico - Seamless developer experience by having consistent environment from local PC to production env . Vagrant-based single-node k8s, locally running Jenkins, Docker registry, integrated with GitHub - Optimize N/W for fast access to object storage . N/W separation between admin (k8s control plane) and guest (Trino) traffic . Dynamic routing in response to Calico IP assignment● 𝐃𝐞𝐯𝐞𝐥𝐨𝐩 𝐀𝐖𝐒 𝐆𝐥𝐮𝐞 𝐃𝐚𝐭𝐚 𝐂𝐚𝐭𝐚𝐥𝐨𝐠-𝐜𝐨𝐦𝐩𝐚𝐭𝐢𝐛𝐥𝐞 𝐬𝐞𝐫𝐯𝐢𝐜𝐞 - Show less

Gyeonggi, South Korea

● 𝐃𝐞𝐯𝐞𝐥𝐨𝐩 𝐀𝐖𝐒 𝐄𝐋𝐁-𝐜𝐨𝐦𝐩𝐚𝐭𝐢𝐛𝐥𝐞 𝐜𝐥𝐨𝐮𝐝 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦 𝐬𝐞𝐫𝐯𝐢𝐜𝐞 - Automaticallly scale-in/out based on usage (CPU, MEM, # of connections) - API-compatible to AWS Classic Load Balancer, allowing tools such as terraform's AWS provider - Features include SSL termination, DNS auto-registration, cross-AZ routing, connection draining - Designed for best performance considering DC N/W architecture, rack/host placement, proxy engine - HA in case of… Show more ● 𝐃𝐞𝐯𝐞𝐥𝐨𝐩 𝐀𝐖𝐒 𝐄𝐋𝐁-𝐜𝐨𝐦𝐩𝐚𝐭𝐢𝐛𝐥𝐞 𝐜𝐥𝐨𝐮𝐝 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦 𝐬𝐞𝐫𝐯𝐢𝐜𝐞 - Automaticallly scale-in/out based on usage (CPU, MEM, # of connections) - API-compatible to AWS Classic Load Balancer, allowing tools such as terraform's AWS provider - Features include SSL termination, DNS auto-registration, cross-AZ routing, connection draining - Designed for best performance considering DC N/W architecture, rack/host placement, proxy engine - HA in case of host/rack/AZ-level malfunction - Commercialized in EU region Show less

Gyeonggi, South Korea

● 𝐋𝐞𝐚𝐝 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦 𝐬𝐞𝐫𝐯𝐢𝐜𝐞 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐟𝐨𝐫 𝐚 𝐩𝐫𝐢𝐯𝐚𝐭𝐞 𝐜𝐥𝐨𝐮𝐝 - Manage multi-national service development/operation teams - 12 in HQ (KR), 20 in a subsidiary company (US), 18 in ovesea institutes (Poland, Indonesia) - Services in-charge . Serverless Trino query service . Data metastore service . Identity and Access Management . Elastic Load Balancing . Object storage service . Cloud monitoring . Cloud audit… Show more ● 𝐋𝐞𝐚𝐝 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦 𝐬𝐞𝐫𝐯𝐢𝐜𝐞 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐟𝐨𝐫 𝐚 𝐩𝐫𝐢𝐯𝐚𝐭𝐞 𝐜𝐥𝐨𝐮𝐝 - Manage multi-national service development/operation teams - 12 in HQ (KR), 20 in a subsidiary company (US), 18 in ovesea institutes (Poland, Indonesia) - Services in-charge . Serverless Trino query service . Data metastore service . Identity and Access Management . Elastic Load Balancing . Object storage service . Cloud monitoring . Cloud audit logging Show less

Suwon, Gyeonggi-Do, Korea

● 𝐃𝐞𝐯𝐞𝐥𝐨𝐩 𝐀𝐖𝐒 𝐈𝐀𝐌/𝐒𝐓𝐒-𝐜𝐨𝐦𝐩𝐚𝐭𝐢𝐛𝐥𝐞 𝐜𝐥𝐨𝐮𝐝 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦 𝐬𝐞𝐫𝐯𝐢𝐜𝐞 - Any off-the-shelf AWS IAM/STS client can communicate without code change - Provides authentication/authorization for other cloud platform services - Include IAM/STS features: . User/Group/Role CRUD . Authentication via permanent/temporary key pairs and OAuth JWT . Authorization based on IAM and Resource-based policies . Temporary key pair generation via… Show more ● 𝐃𝐞𝐯𝐞𝐥𝐨𝐩 𝐀𝐖𝐒 𝐈𝐀𝐌/𝐒𝐓𝐒-𝐜𝐨𝐦𝐩𝐚𝐭𝐢𝐛𝐥𝐞 𝐜𝐥𝐨𝐮𝐝 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦 𝐬𝐞𝐫𝐯𝐢𝐜𝐞 - Any off-the-shelf AWS IAM/STS client can communicate without code change - Provides authentication/authorization for other cloud platform services - Include IAM/STS features: . User/Group/Role CRUD . Authentication via permanent/temporary key pairs and OAuth JWT . Authorization based on IAM and Resource-based policies . Temporary key pair generation via role assumption - Sync DBs in all regions via async replication for a global single namespace - Sync DBs in the master region via Galera for HA and durability - Multi-AZ HA, zero-downtime upgrade - Commercialized in EU and KR regions, planned for SG and US regions Show less

Gyeonggi, South Korea

● 𝐃𝐞𝐯𝐞𝐥𝐨𝐩 𝐒3-𝐜𝐨𝐦𝐩𝐚𝐭𝐢𝐛𝐥𝐞 𝐥𝐚𝐫𝐠𝐞 𝐬𝐜𝐚𝐥𝐞 𝐨𝐛𝐣𝐞𝐜𝐭 𝐬𝐭𝐨𝐫𝐚𝐠𝐞 𝐬𝐞𝐫𝐯𝐢𝐜𝐞 - Any S3 clients can connect to as S3, thanks to Minio as API layer - Implement a hyper scale metadata layer consisting of multiple FDB clusters for billions of objects - Implement a horizontally scalable, erasure coded storage layer with 11-9 durability - Designed the full stack from DC N/W architecture up to S/W components for optimal performance - Multi-AZ HA to… Show more ● 𝐃𝐞𝐯𝐞𝐥𝐨𝐩 𝐒3-𝐜𝐨𝐦𝐩𝐚𝐭𝐢𝐛𝐥𝐞 𝐥𝐚𝐫𝐠𝐞 𝐬𝐜𝐚𝐥𝐞 𝐨𝐛𝐣𝐞𝐜𝐭 𝐬𝐭𝐨𝐫𝐚𝐠𝐞 𝐬𝐞𝐫𝐯𝐢𝐜𝐞 - Any S3 clients can connect to as S3, thanks to Minio as API layer - Implement a hyper scale metadata layer consisting of multiple FDB clusters for billions of objects - Implement a horizontally scalable, erasure coded storage layer with 11-9 durability - Designed the full stack from DC N/W architecture up to S/W components for optimal performance - Multi-AZ HA to survive DC-level outage - Commercialized in KR, EU. Planned for SG and US regions Show less

Gyeonggi, South Korea

● 𝐃𝐞𝐯𝐞𝐥𝐨𝐩 𝐚 𝐥𝐚𝐫𝐠𝐞 𝐬𝐜𝐚𝐥𝐞 𝐩𝐫𝐨𝐦𝐞𝐭𝐡𝐞𝐮𝐬-𝐛𝐚𝐬𝐞𝐝 𝐦𝐨𝐧𝐢𝐭𝐨𝐫𝐢𝐧𝐠 𝐬𝐲𝐬𝐭𝐞𝐦𝐬 𝐟𝐨𝐫 𝐚 𝐩𝐫𝐢𝐯𝐚𝐭𝐞 𝐜𝐥𝐨𝐮𝐝 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦 - Collect metrics from platform services, containers (docker, Joyent Triton), OS, network devices, infra - Provide a unified query layer that abstracts out multiple prometheus servers - Active-active HA, data durability via replication, horizontal scalability - Provide visualization via Grafana - Implement… Show more ● 𝐃𝐞𝐯𝐞𝐥𝐨𝐩 𝐚 𝐥𝐚𝐫𝐠𝐞 𝐬𝐜𝐚𝐥𝐞 𝐩𝐫𝐨𝐦𝐞𝐭𝐡𝐞𝐮𝐬-𝐛𝐚𝐬𝐞𝐝 𝐦𝐨𝐧𝐢𝐭𝐨𝐫𝐢𝐧𝐠 𝐬𝐲𝐬𝐭𝐞𝐦𝐬 𝐟𝐨𝐫 𝐚 𝐩𝐫𝐢𝐯𝐚𝐭𝐞 𝐜𝐥𝐨𝐮𝐝 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦 - Collect metrics from platform services, containers (docker, Joyent Triton), OS, network devices, infra - Provide a unified query layer that abstracts out multiple prometheus servers - Active-active HA, data durability via replication, horizontal scalability - Provide visualization via Grafana - Implement multitenancy based on OAuth and cert-based auth - Commercialied in KR, EU, SG, and US regions Show less

Gyeonggi, South Korea

● 𝐃𝐞𝐯𝐞𝐥𝐨𝐩 𝐝𝐲𝐧𝐚𝐦𝐢𝐜 𝐫𝐞𝐬𝐨𝐮𝐫𝐜𝐞 𝐦𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭 𝐬𝐲𝐬𝐭𝐞𝐦 𝐟𝐨𝐫 𝐒𝐩𝐚𝐫𝐤 𝐬𝐭𝐫𝐞𝐚𝐦𝐢𝐧𝐠 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 - Automatically scale worker nodes based on the processing latency of micro batch - Build on Mesos/Marathon to quickly scale-in/out dockerized YARN cluster

Gyeonggi, South Korea

● 𝐁𝐮𝐢𝐥𝐝 𝐚𝐧𝐝 𝐚𝐝𝐦𝐢𝐧𝐢𝐬𝐭𝐫𝐚𝐭𝐞 𝐇𝐃𝐏-𝐛𝐚𝐬𝐞𝐝 𝐇𝐚𝐝𝐨𝐨𝐩 𝐜𝐥𝐮𝐬𝐭𝐞𝐫 - Deployed on 400 nodes in Samsung Research America - Build SSO using LDAP/Kerberos, high availbility and disaster recovery via rack/host level redundancy - Design and build a CLOS network for high network bandwidth between nodes . Contributed to winning minute sort competition of Sort Benchmark 2014 on the cluster

Gyeonggi, South Korea

● 𝐃𝐞𝐯𝐞𝐥𝐨𝐩 𝐦𝐮𝐬𝐢𝐜 𝐬𝐡𝐚𝐫𝐢𝐧𝐠 𝐟𝐞𝐚𝐭𝐮𝐫𝐞 𝐨𝐟 𝐆𝐚𝐥𝐚𝐱𝐲 𝐒4 - Design and implement time sync protocol among multiple Galaxy S4 devices - Written in C++, which is then accessed via JNI from Android app

Seoul, South Korea

☛ 𝘢𝘭𝘵𝘦𝘳𝘯𝘢𝘵𝘪𝘷𝘦 𝘮𝘪𝘭𝘪𝘵𝘢𝘳𝘺 𝘴𝘦𝘳𝘷𝘪𝘤𝘦● 𝐃𝐞𝐯𝐞𝐥𝐨𝐩 𝐚 𝐓𝐞𝐥𝐧𝐞𝐭 𝐠𝐚𝐭𝐞𝐰𝐚𝐲 𝐟𝐨𝐫 𝐫𝐞𝐚𝐥𝐭𝐢𝐦𝐞 𝐦𝐨𝐧𝐢𝐭𝐨𝐫𝐢𝐧𝐠, 𝐩𝐚𝐭𝐭𝐞𝐫𝐧 𝐟𝐢𝐥𝐭𝐞𝐫𝐢𝐧𝐠, 𝐚𝐧𝐝 𝐥𝐨𝐠𝐠𝐢𝐧𝐠 - Work as an inetd service that sits in front of telnetd - Transparently proxy Telnet protocol with realtime filtering of black-listed command patterns● 𝐃𝐞𝐯𝐞𝐥𝐨𝐩 𝐚𝐧 𝐇𝐓𝐓𝐏 𝐬𝐞𝐫𝐯𝐞𝐫 𝐦𝐨𝐝𝐮𝐥𝐞 𝐟𝐨𝐫 𝐦𝐨𝐛𝐢𝐥𝐞 𝐩𝐡𝐨𝐧𝐞 𝐩𝐚𝐲𝐦𝐞𝐧𝐭 -… Show more ☛ 𝘢𝘭𝘵𝘦𝘳𝘯𝘢𝘵𝘪𝘷𝘦 𝘮𝘪𝘭𝘪𝘵𝘢𝘳𝘺 𝘴𝘦𝘳𝘷𝘪𝘤𝘦● 𝐃𝐞𝐯𝐞𝐥𝐨𝐩 𝐚 𝐓𝐞𝐥𝐧𝐞𝐭 𝐠𝐚𝐭𝐞𝐰𝐚𝐲 𝐟𝐨𝐫 𝐫𝐞𝐚𝐥𝐭𝐢𝐦𝐞 𝐦𝐨𝐧𝐢𝐭𝐨𝐫𝐢𝐧𝐠, 𝐩𝐚𝐭𝐭𝐞𝐫𝐧 𝐟𝐢𝐥𝐭𝐞𝐫𝐢𝐧𝐠, 𝐚𝐧𝐝 𝐥𝐨𝐠𝐠𝐢𝐧𝐠 - Work as an inetd service that sits in front of telnetd - Transparently proxy Telnet protocol with realtime filtering of black-listed command patterns● 𝐃𝐞𝐯𝐞𝐥𝐨𝐩 𝐚𝐧 𝐇𝐓𝐓𝐏 𝐬𝐞𝐫𝐯𝐞𝐫 𝐦𝐨𝐝𝐮𝐥𝐞 𝐟𝐨𝐫 𝐦𝐨𝐛𝐢𝐥𝐞 𝐩𝐡𝐨𝐧𝐞 𝐩𝐚𝐲𝐦𝐞𝐧𝐭 - Securely communicate transaction data to payment backend on Wireless Application Protocol - Support Apache HTTP server and IIS Show less

Doctor Of Philosophy (Ph.D.), Computer Science And Technology, 3.99/4.30

● Ph.D. in Computer Science and Engineering Division of Electrical and Computer Engineering, POSTECH - Thesis: Three Essential.

Bachelor Of Engineering - Be, Computer Science, 3.65/4.30

● Achieved Magna Cum Laude in Computer Science and Engineering (rank 3/22) ● Leaves - Feb. 2002 ~ May. 2004: alternative military service.