// CLEARANCE: SENIOR ENGINEER //
ATAPHON
SRILAKHAM
SENIOR SOFTWARE ENGINEER
& SOLUTION ARCHITECT
Fintech · Event-Driven Systems · C# / .NET · On-Prem Cloud
OPERATIVE INTEL
Engineer with of experience delivering online, real-time systems — starting from multiplayer game backends and evolving into ASP.NET APIs, on-prem cloud infrastructure, and solution architecture.
Today I design and implement end-to-end solutions around C#/.NET, React, Ceph RGW (S3-compatible object storage), and Keycloak (OIDC/IAM) in strictly on-premise environments. I've led migrations from legacy monoliths to containerized, observable services — introducing API gateways, event-driven messaging, idempotent APIs, and hybrid caching.
Earlier in my career I spent several years as a Unity developer building real-time multiplayer games for Android/iOS/PC — deep exposure to networking, matchmaking, live-service ops, and in-app payments.
Targeting Solution Architect / Senior Engineer roles in fintech and enterprise. Currently leveling up: Azure AWS Terraform
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ARSENAL
⚔ BACKEND
🖥 FRONTEND
🛡 INFRASTRUCTURE
📡 OBSERVABILITY
👾 GAME OPS (PAST)
⚡ INCOMING STRATAGEM
DEPLOYMENT LOG
Senior Software Engineer
2C2P · Full-time · Acquiring Team
- Won the company hackathon — even before passing probation — with an AI-powered knowledge base enabling LLMs to guide developers through 2C2P payment gateway integration. Adopted by the company and showcased in the opening keynote at AWS Summit Bangkok.
- Implementing ISO 8583 financial messaging across card schemes (AMEX, UPI, VISA in progress) — including building a TCP multiplex proxy that routes financial messages at the protocol level by ISO field, and exploring JPOS for deep protocol work.
- Built a merchant data sync pipeline — automating batch file processing for UPI merchant onboarding and synchronization across the acquiring network.
- Migrating legacy .NET Framework / WCF services to .NET Core within a cross-functional team of 15 (dev, QA, SA, DevOps, infra, security) serving payment infrastructure at scale across Southeast Asia.
- Conducting code reviews, mentoring team members, and building internal knowledge documentation to raise team-wide engineering standards.
Software Engineer
Hitachi Channel Solutions (Thailand) · Full-time
- Led full-stack development for internal and customer-facing systems using ASP.NET APIs + React.
- Migrated legacy monolithic applications from manual, unversioned deployments to containerized services with proper versioning and health checks.
- Designed on-prem "cloud-style" infrastructure using Ceph RGW (S3) for object storage and Keycloak (OIDC/IAM) for JWT-based API security.
- Introduced YARP API gateway and BFF patterns, plus event-driven and idempotent API design to improve reliability and evolvability.
- Deployed SigNoz and standardized logging, metrics, and distributed tracing across services.
- Frequently stepped in to correct flawed solution designs and deliver working end-to-end implementations under tight timelines.
Career Transition
Career Break · Self-study
- Focused on strengthening ASP.NET Core, cloud-native design patterns, and DevOps practices. Searching for roles closer to backend / SaaS architecture work.
Senior Unity Developer
MetaEarn Company Limited · Full-time
- Built and operated real-time, server-authoritative multiplayer game backends for Android/iOS/PC/WebGL using C#, dedicated servers, UDP/WebSocket, and REST APIs.
- Designed and implemented integrations with Google/Apple/Facebook auth and in-app payments, plus Unity Gaming Services (Remote Config, Analytics, IAP, Friends).
- Owned game infrastructure and live ops: remote patching, asset management, client/server versioning, data import pipelines, and internal tools.
Unity Developer
Game Square Interactive Co., Ltd. · Full-time
- Developed features for a live-service multiplayer 2D isometric game: customization systems, inventory, shops, navigation, chat, and events.
- Built backend-supporting tools (item import, map content tooling, progression tracking) and UIs improving player experience and internal workflows.
- Collaborated closely with designers and artists to ship frequent updates tuned on live player behavior.
TRAINING ACADEMY
Bachelor of Engineering — Computer Engineering
Srinakharinwirot University · Graduated 2018
MEDALS & COMMENDATIONS
2C2P
Hackathon Winner
Issued Mar 2026
FIELD OPS
Public missions on GitHub — SackMaggie
▶ FETCHING ACTIVITY LOG...
OPEN COMMS
Currently serving as a Senior Software Engineer at 2C2P — happily deployed. Not actively looking, but if you've got something worth hearing, the channel is open.