Languages & systems
C / C++Python
GoShell
LinuxSocket programming
Concurrency
// software engineer · distributed C/C++ · cloud-native networking
I build networked systems
that stay fast and boring to operate.
Yoomin Oh — Software Engineer
I work on latency-sensitive C/C++ services in cloud-native environments — socket-level performance, TLS/SSL, and the AWS networking around them. Give me a system that's missing its latency budget and I'll hand back a well-instrumented one that isn't.
~/about
Problems first, stacks second.
A short version of how I work and what I care about.
I'm a software engineer focused on distributed C/C++ systems in cloud-native environments. Since 2023 I've worked on in-flight entertainment platform services at Panasonic Avionics — the socket-level performance, TLS/SSL, and AWS networking that decide whether a latency-sensitive service holds up in production.
I care about instrumentation before optimisation, automated verification over manual checking, and disciplined troubleshooting when DNS, VPC routing, or a security group is quietly breaking connectivity. I hold the AWS Developer Associate certification.
3+
years shipping production systems
80%
manual testing overhead eliminated
EKS→ECS
container migration led for validation
AWS
Developer Associate certified
~/skills
Technical toolkit
Chosen per problem — this is what I reach for most often.
Networking
TCP/IPHTTP/HTTPS
TLS/SSLDNS
REST APIsJWT auth
Subnetting
AWS & infra
ECSEC2
ECRRDS
IAMCFT
S3AWS WAF
LambdaAPI Gateway
Route 53VPC
Security GroupsDocker
Delivery & tooling
CI/CD pipelinespytest
Linux debugging toolsJIRA
JAMA
~/projects
Selected work
Three efforts at Panasonic Avionics where the interesting part was the constraint, not the feature.
01
EKS → ECS migration validation
- Problem
- The in-flight entertainment platform was moving its container orchestration from EKS to ECS, and the business needed confidence that behaviour and reliability wouldn't regress during the cutover.
- Solution
- Led validation and quality engineering for the migration — designed test strategies covering functional parity and operational reliability, and built end-to-end automation into the CI/CD pipeline.
- Impact
- Eliminated ~80% of manual testing overhead and caught nearly all regressions before release, keeping the migration on schedule.
AWS ECSEKS
CI/CDDocker
Proprietary — Panasonic Avionics
02
C/C++ distributed system performance tuning
- Problem
- A large-scale C/C++ distributed system was missing its latency budget under load, with bottlenecks concentrated at the socket layer.
- Solution
- Diagnosed socket-level bottlenecks with Linux debugging tools, reworked the thread concurrency model, and reduced network I/O latency in the hot path.
- Impact
- Lower, more predictable network I/O latency for a latency-sensitive service, with a concurrency model that scales more cleanly under load.
C / C++Linux
SocketsTCP/IP
Proprietary — Panasonic Avionics
03
Secure service-to-service APIs on AWS
- Problem
- Services needed scalable, secure service-to-service communication inside private VPCs, and legacy client-server TCP links had transport-layer security gaps.
- Solution
- Designed RESTful APIs secured with JWT, deployed via API Gateway and Lambda within private VPCs using Route 53; identified the TLS gaps and implemented SSL/TLS certificate configuration to enforce encrypted connections.
- Impact
- Encrypted, authenticated service-to-service communication with no exposed transport-layer gaps.
API GatewayLambda
JWTTLS/SSL
Route 53
Proprietary — Panasonic Avionics
~/experience
Where I've worked
Recent roles and the milestones that mattered.
May 2024 — Present
Member of Technical Staff II, Software
Panasonic Avionics Corporation · Irvine, CA
Own validation and quality engineering for the EKS→ECS migration. Built automation frameworks into the CI/CD pipeline, tuned a C/C++ distributed system at the socket and concurrency layers, designed JWT-secured REST APIs on API Gateway and Lambda in private VPCs, closed SSL/TLS gaps on client-server links, and provided production support for DNS, VPC routing and security-group issues.
Feb 2023 — Apr 2024
Software Test Engineer
Panasonic Avionics Corporation · Irvine, CA
Built a suite of technical validation cases in JIRA and JAMA to strengthen requirement traceability, replaced manual test workflows with automated validation scripts to shorten feedback loops, and ran cross-platform hardware/software integration against functional specs.
Dec 2022
B.S. Computer Science
University of California, San Diego · La Jolla, CA
Graduated December 2022.
~/contact
Let's talk
Hiring, contracting, or just want to compare production incident stories — send a note.