Johnson Lu
Building the infrastructure that helps engineering teams ship faster and more reliably.
Built for teams at
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About
I bridge the gap between software and infrastructure.
I'm a DevOps Engineer at D3 Security with a background in full-stack software development. My focus is on the infrastructure layer — designing CI/CD pipelines, IaC platforms, and GitOps workflows that reduce friction between development and operations. I care about translating complex systems into reliable, reproducible processes that let engineering teams move faster. I hold a B.Sc. in Computer Science from UBC.
Experience
May 2025 – Present
DevOps Engineer
D3 Security
PythonKubernetesHelmPulumiArgo CD
- ▸Introduced Pulumi (Python) IaC platform managing 14+ Azure resources across 3 environments, reducing provisioning time from 3.5 hours to 30 minutes with integrated testing and rollback
- ▸Led implementation of a CI/CD upgrade pipeline for customer-facing sites, fully automating manual deployment steps and reducing downtime by 20 minutes per deployment
- ▸Implemented GitOps workflow with Argo CD and Helm, reducing manual deployment steps by 75% and standardizing releases across all environments
- ▸Built multi-tenant log ingestion pipeline using Vector, Pulsar, and Istio service mesh with mTLS authentication and per-tenant topic isolation
Sept 2024 – May 2025
Software Engineer I
Eureka DevSecOps
Azure DevOpsRubyJest
- ▸Led development of a feature to import ExcelJs sheets with asynchronous uploads to Azure Blob Storage for in-app data display
- ▸Built automated testing pipeline in Azure DevOps handling test data setup and execution, reducing manual effort by 90%
- ▸Developed GitHub App integration automating user signups through webhook-based account creation and OAuth login
- ▸Built user-configurable categorization system for vulnerability data, enabling filtering and grouping across dashboards
May 2024 – Aug 2024
Application Security Developer (Co-op)
Eureka DevSecOps
Azure DevOpsJestMaterial-UI
- ▸Created 500+ test cases with Jest, expanding frontend selector coverage from 0% to 82%
- ▸Migrated custom data tables to Material UI, removing 1,000 lines of code while adding sorting, filtering, and pagination
- ▸Added bulk state modification feature, eliminating the need for users to edit items individually
Sept 2021 – Aug 2022
Software Developer (Co-op)
Smile Digital Health
JavaJUnitMockitoPostman
- ▸Developed a data interceptor processing 100,000+ resources before transmission to a backend database
- ▸Implemented regression tests using JUnit and Mockito, increasing test coverage by 20%
- ▸Strengthened error handling across 350+ cases, enhancing reliability and aiding future diagnosis
- ▸Used Postman to investigate API bugs and produce reproduction steps for 20+ customer-reported incidents
Projects
Personal projects from my time at UBC.
Contact