About me
Hey there! I'm Jianheng, aka Jansen, a tech enthusiast navigating the software industry since 2012. I started as a full-stack engineer, became a Scrum Master, and now lead a team focused on automation, production stability, and rapid issue resolution.
I primarily work with C# but enjoy exploring Python, Java, and Go. Based in Japan, I'm also improving my Japanese. Outside of work, I tinker with new tech, set up home labs, and optimize systems just for fun.
This blog is my space to share insights on software development, system architecture, and the tech challenges I'm tackling. If you love coding and problem-solving, stick around!
My Roles
My Journey in Tech
From development to leadership, automation, and security—adapting to challenges and driving impact.
Team Lead
Led teams in engineering, automation, and reliability, ensuring smooth operations and project success.
Application Engineer
Developed and maintained backend systems, optimizing performance and scalability.
SRE
Enhanced system reliability, automated operations, and improved observability for production environments.
Scrum Master
Facilitated agile processes, improved team collaboration, and optimized sprint execution.
CI/CD
Automated deployment pipelines, improved DevOps efficiency, and ensured seamless code integration.
BI Engineer
Designed data pipelines and dashboards to deliver actionable business insights.
Security Champion
Advocated security best practices, conducted audits, and mitigated risks in applications and infrastructure.
Fullstack Engineer
Built and maintained web applications, handling both frontend and backend development.
Career at a Glance
Current: Global E-Commerce & Fintech Company
Working as a Domain Lead for an Order Management System (OMS). Responsible for handling escalations, improving production stability, automating monitoring, and coordinating with multiple teams to enhance system reliability.
SaaS ERP Provider for Auto Repair Chains
Worked as a Fullstack Engineer, developing and maintaining ERP solutions tailored for automobile part repair chain services in North America. Involved in backend system design, API development, and cloud infrastructure management.
Independent iOS App Developer
Designed and developed multiple iOS applications, including a lawyer assistant, money spending tracker, and personal project management tool. Handled full app lifecycle from concept to App Store deployment.
Skills
My Tech Stack & Expertise
A collection of the technologies, tools, and skills I've honed over the years in software development, DevOps, and system architecture.
Programming Languages
C#, Python, VB.Net, JavaScript, Java, Swift, Objective-C, PHP
API Development & Integration
API Development, Amazon Integration, Shopify Integration
DevOps Tools
Docker, Kubernetes, Jenkins, GitHub Actions, TeamCity, Octopus, Git, ELK, Consul, Vault, Kafka, Elasticsearch, Filebeat, Kibana
Software Development & Automation
Code Building, Application Deployment, Automation, Unit Testing (UT), Integration Testing (IT), SonarQube
Site Reliability Engineering (SRE)
PagerDuty, Rundeck, Sentry, AlertMonitoring, Kibana Monitoring, Grafana
Microservices & Infrastructure
General Microservices Development, API, Event as a Service, Monitor as a Service, BareMetal as a Service
Security & Compliance
Security Champion, DevSecOps
Cloud Platforms
Azure, AWS
Databases
MSSQL, MySQL/MariaDB, SQL
Find out more content in my Blog
View all posts »Here you'll find everything from failed experiments to productivity hacks I swear by. It's where I put notes, reflections, and technical deep dives that are too long for Twitter but not polished enough for Medium.
12 years
Experience
7 years
Leadership
5 years
Scrum Master
~10,000 cups ☕️
Coffee Consumed