Hi, my name is Kittipat Poonyakariyakorn

I’m a software engineer who loves building scalable backend systems, designing intuitive APIs, and sharing knowledge through technical writing.

Kittipat Poonyakariyakorn

About Me

I’m a software engineer passionate about building reliable, scalable systems and crafting clean, maintainable code. I love turning complex problems into simple, elegant solutions.

Core Skills

Languages

GolangPythonTypeScriptJavaScriptC++C

Databases

PostgreSQLMySQLMongoDBFirestore

DevOps & Tools

TerraformAnsibleDockerKubernetesArgoCDRancherGitHub ActionsGitLab CI

Cloud Platforms

GCPAWSDigitalOceanLinodeHuawei Cloud

Interests

🧠System Design
šŸ“˜Writing Technical Blogs
šŸŽ®Gaming
šŸŒTraveling

Featured Projects

Discover projects that reflect my expertise in backend systems, developer tooling, and practical software architecture.

go-common

A common backend framework to standardize and accelerate backend service development.

GolangGinOpenTelemetryetc.

Ticket Reservation System

A clean architecture-based concert ticket booking system with seat selection and payments.

GolangClean ArchitectureRedisPostgreSQL

Social Media Analytics Dashboard

Dashboard for visualizing social media engagement across Facebook, YouTube, Instagram, and Twitter.

PythonDashPlotlySocial APIs

ESP8266 Modbus RTU Library

C++ library for ESP8266 microcontroller to communicate over Modbus RTU via serial.

ESP8266C++Modbus RTUSerial Communication

Omron D6T Temperature Sensor Library

C library to interface with Omron D6T thermal sensor via I2C, developed during the COVID-19 pandemic.

CI2CEmbedded SystemsOmron D6T

My Certificates

A selection of certifications I've earned in cloud, DevOps, and security domains.

HashiCorp Certified: Terraform Associate (003)

HashiCorp

Issued Feb 2025

View Certificate

GitHub Actions

GitHub

Issued Mar 2025

View Certificate

Associate Cloud Engineer Certification

Google

Issued Jun 2025

View Certificate

Google Cloud Cybersecurity Certificate

Google

Issued Apr 2025

View Certificate

Work Experience

A timeline of roles where I contributed to scalable systems, DevOps automation, and backend excellence.

Software Engineer

Kiatnakin Phatra Securities PCL

Sep 2024 – Present

  • Developing internal APIs with validation, retry, and structured error handling for onboarding & profile services.
  • Built standardized internal error code framework for structured debugging and traceability.
  • Contributed to reusable Go library including logger, validator, retry handler, and middleware.
  • Mentoring team, increasing test coverage, and improving internal dev tooling.
GoMySQLRabbitMQ

Software Engineer

Senestia Co., Ltd.

Apr 2023 – Aug 2024

  • Improved uptime monitoring and proactive error detection.
  • Migrated to GKE with ArgoCD and Rancher, improving deployment speed and reliability.
  • Introduced IaC framework to streamline infrastructure provisioning.
  • Implemented full observability using Datadog and OpenTelemetry.
  • Led HIS (Hospital Information Systems) system design using FHIR and backend for Line-based survey project.
GoNext.jsMongoDBArgoCDDatadogKubernetesTerraformAnsibleGCP

Software Engineer

Prodigy9 Co., Ltd.

Jul 2021 – Apr 2023

  • Designed crypto bot trading platform with automated and manual flows.
  • Built e-wallet backend services including merchant onboarding and QR payment.
  • Implemented CI/CD pipelines using GitHub Actions and ArgoCD.
  • Developed microservices and infrastructure on AWS, GCP, Linode, DigitalOcean.
GoPythonPostgreSQLKubernetesArgoCDAWSLinodeDigitalOcean

Cloud Engineer

Advanced Info Service PCL

Jul 2020 – Jul 2021

  • Managed and monitored AIS IoT cloud infrastructure.
  • Developed automation scripts for server provisioning.
  • Monitored performance and implemented system upgrades.
PythonShellScriptRedHatNagiosELKGrafanaPrometheusHuawei Cloud

IoT Software Engineer

Internet Thailand PCL

Jul 2018 – Jul 2020

  • Developed IoT platforms with MQTT, CoAP protocols.
  • Built embedded Linux drivers for I2C, SPI, UART devices.
  • Designed custom enterprise IoT solutions and backend APIs.
CC++Cross CompilerMQTTCoAPNode-RED

Latest Blog Posts

I write about software development, cloud technologies, and my journey as a developer. Check out my latest articles from Medium and DEV Community.