Kai-Hsiang Chuang
Senior Software Engineer·Backend Java & API Platforms·Revenue Systems
7+ years building mission-critical backend systems, well-documented APIs, and self-serve platforms that empower teams to move fast. Master of IT @ UTS · WAM 89.88 (HD).
Currently @
Solum Medical
7+
Years Experience
89.88
UTS WAM (HD)
10+
Systems Built
ANZ
Based in Sydney
Building platforms that power revenue and empower teams
I'm a backend-focused software engineer with 7+ years of experience designing and delivering enterprise-grade APIs, platforms, and self-serve tooling. My work spans high-throughput ERP finance systems, Java/Oracle treasury platforms, cloud-based SaaS products, and revenue analytics pipelines.
I'm currently completing a Master of Information Technology at the University of Technology Sydney (WAM 89.88, High Distinction), backed by an Academic Merit International Scholarship. I hold dual Master's degrees, the first in Industrial Engineering from National Tsing Hua University (GPA 3.80).
I'm at my best when partnering with product and business stakeholders to translate ambiguous requirements into scalable, well-documented systems: the kind that other teams can use and build on independently. I also actively mentor engineers, champion code quality, and leverage AI coding tools to amplify team output.
Software Developer
Solum Medical · Sydney, Australia
- Designed and built backend APIs for an Order Management System applying SOLID principles and clean API contract design to handle concurrent product, inventory, and distributor data flows at production scale.
- Built and documented self-serve platform tooling and internal APIs, enabling engineering teams to integrate independently, directly reducing cross-team friction and accelerating delivery velocity.
- Acted as technical quality champion: led code reviews to enforce engineering best practices, identify architectural risks, and ensure services met scalability and security standards before each production release.
- Leveraged AI coding tools (GitHub Copilot) hands-on to accelerate feature delivery and improve code consistency across the backend codebase.
- Used every production incident as an opportunity to improve system observability, resilience, and operational runbooks.
DevOps & Frontend Developer
Cloud Riverdale · Sydney, Australia
- Optimised backend service performance on AWS EC2, maintaining 99.9% uptime through targeted infrastructure tuning, automated health monitoring, and rapid incident response.
- Designed and implemented CI/CD pipelines (GitHub Actions) enabling fully automated zero-downtime deployments: commit → test → staging → production.
- Developed self-serve internal tooling and operational documentation, empowering non-technical stakeholders to manage releases and configurations independently.
- Profiled and refactored concurrent backend service code to reduce API response times by 25% through threading improvements and service simplification.
Junior → Senior IT and System Engineer
Vanguard International Semiconductor Corporation · Taiwan
- Progressed from maintaining high-throughput ERP Finance System modules (AP/AR/GL) to leading end-to-end design of the VIS Treasury System, a Java/Oracle enterprise financial platform handling internal lending, accounting management, and real-time treasury operations at corporate scale.
- Architected RESTful backend APIs and relational database schemas for complex multi-step financial workflows; defined API contracts and documented platform interfaces to enable self-serve adoption across finance and accounting teams.
- Identified solution options, evaluated architectural trade-offs, and proposed scalable software designs to non-technical stakeholders; balancing immediate business needs against long-term extensibility, then executed iteratively while maintaining production stability.
- Developed a C# application to automate the Accounts Payable Excel reporting workflow (data parsing, business logic, formatted output), eliminating manual compilation; also optimised SQL query performance and backend integrations across enterprise financial systems.
- Proactively identified and communicated technical debt to stakeholders; drove AI tool adoption (VIS ChatGPT) across engineering workflows. Both initiatives measurably reduced system complexity and improved team productivity.
- Mentored junior engineers through structured code reviews and pair-programming; built a knowledge-sharing culture that raised team capability and code quality.
Business Data Analyst
AlfredCamera · Taiwan
- Designed and implemented API integrations with external partners, creating reliable data pipelines that powered company-wide revenue, retention, and monetisation analytics surfaced to executives.
- Built growth dashboards tracking paid user acquisition, retention, upsell, and cross-sell KPIs, directly informing pricing and promotion strategy at the CEO level.
- Developed Python automation services for A/B testing and pricing analysis, enabling rapid monetisation experiments and evidence-based product decisions.
- Collaborated with Product and Engineering teams to design backend APIs for customer-facing features, translating ambiguous business requirements into clear technical specifications.
Promotional Offer Platform
Self-Serve Revenue Enablement
Backend promotional platform in Java/Python enabling internal teams to configure, launch, and manage targeted offers without engineering involvement. Integrated with content management, personalisation, and experimentation services.
- RESTful API layer with full documentation & self-serve config interface
- Scalable DB schemas for discounts, trials, bundles with real-time eligibility
- SOLID-principled design, enabling new offer types to be added without structural rework
Invoice Automation Service
Distributed Java/Oracle Backend
Distributed Java/Python backend service with concurrent data processing for OCR-based invoice extraction and Oracle ERP integration, reducing manual financial processing from days to minutes.
- Event-driven patterns with structured error handling at service boundaries
- OCR + QR recognition logic with fraud detection validation
- Delivered with automated testing and CI/CD from day one
ERP Finance System Automation
AP Workflow & Oracle Treasury Integration
C# application automating the Accounts Payable Excel reporting workflow at VIS, plus distributed integration service connecting Oracle Treasury with internal financial platforms to support a 10% business expansion.
- Automated AP data parsing, business logic, and formatted report generation
- Zero-downtime Oracle Treasury integration with concurrent data transformation
- Improved ERP workflow efficiency by 30% through systematic service decomposition
Ad Performance Analytics Pipeline
Revenue & Retention Data Platform
PostgreSQL-backed data pipeline and growth dashboard system at AlfredCamera tracking paid user acquisition, retention, upsell, and cross-sell KPIs. Python A/B testing and pricing analysis services enabling data-driven revenue decisions.
- SQL pipelines powering executive-facing revenue and retention dashboards
- Python A/B testing automation contributing to 10% monthly revenue improvement
- API integrations with external partners for seamless data ingestion
Languages
Backend & Architecture
Databases
Cloud & DevOps
AI & Tooling
Collaboration
Certifications & Awards
SAS Viya Data Challenge
Ranked 10th Nationally · SAS · 2025
Commonwealth Bank SE Virtual Experience
Forage
Big Data Analyst Certification
iPAS
Google Analytics Individual Qualification
Journal Paper Published
International Journal of Production Research · 2021
Best Industrial Application Paper
18th APIEMS Conference · 2018
Outstanding Presentation Award
ISMI International Conference · 2018
Let's build something great together
I'm actively exploring Senior Software Engineer opportunities across ANZ, with a focus on backend platforms, API development, and revenue-enabling systems. Open to hybrid or remote roles. If you have an opportunity or just want to connect, reach out.
Location
Sydney, NSW · Open to Remote (ANZ)