--- title: Resume tags: [Personal, Career] --- <style> .two-column-layout { column-count: 2; /* Set column number */ column-gap: 0px; max-width: 100%; overflow: hidden; } /* Media query for mobile devices */ @media (max-width: 768px) { .two-column-layout { column-count: 1; /* Switch to single column on small screens */ column-gap: 0; /* Optional: Set gap to 0 for single column */ } } </style> # CL Hsieh [文章更新時間: 2026-01-23 13:34] <div class="two-column-layout"> **Backend Engineer** - [GitHub](https://github.com/jba1989) - [Medium](https://medium.com/@jba1989) **Site Projecys** - [tradinglabnet.com](https://tradinglabnet.com) - [五十音道場](https://kana-dojo.site/kana/exam) <div class="float-right">  </div> </div> --- ## Professional Summary Backend engineer with 8+ years of experience delivering high-impact solutions that solve critical production bottlenecks and operational inefficiencies. Specialized in system performance optimization, data processing automation, and scalable backend architecture design. Proven track record of identifying user pain points through stakeholder collaboration and implementing technical solutions that deliver measurable productivity gains. Expert in translating complex business requirements into robust backend systems using PHP, Python, Node.js, and Go, with strong database optimization and cloud infrastructure skills. --- ## Core Competencies ### Backend Engineering & Architecture: API Design & Integration, System Performance Optimization, Data Processing Pipelines, Background Job Processing ### Languages & Frameworks: PHP (Laravel), Python, Node.js, Go, Rust ### Databases & Caching: PostgreSQL, MySQL, Redis (Query Optimization, Schema Design, Caching Strategies) ### Infrastructure & DevOps: Docker, Kubernetes, CI/CD (GitLab, Github), Linux System Administration ### Monitoring & Reliability: Grafana, Performance Profiling, System Monitoring, Log Analysis ### Cloud Platforms: AWS, GCP ### Additional Skills: Vue.js, jQuery, WebSocket, AI-Assisted Development (ChatGPT, GitHub Copilot, Claude, Gemini) --- ## Professional Experience ### Synology Inc. | Backend Engineer | Nov 2021 – Present - **Resolved critical performance bottleneck** affecting production control team by profiling and optimizing backend queries and caching strategies, **reducing primary landing page load time by 90% (from 20s to <2s)** and saving 50+ users an estimated 8+ hours collectively per day - **Improved operational workflows** by proactively interviewing stakeholders to identify core pain points, then designing and implementing backend solutions that addressed issues beyond original specifications, resulting in measurably improved user satisfaction **Example** re-design Packing-List report and saving logistics team about 1 hour per report. - **Architected and optimized CI/CD pipeline orchestration** to enhance developer velocity, implementing test sharding and multi-stage caching strategies that reduced pipeline execution time by 80% and minimized GitLab Runner contention, significantly decreasing developer idle time and infrastructure overhead. - **Accelerated team productivity** by championing adoption of AI-assisted development tools and modern engineering practices, conducting workshops on prompt engineering and workflow optimization techniques - **Established department-wide AI development standards** by introducing AI-assisted coding tools to the team, creating shared project-specific prompt libraries for consistent code generation across engineers, **improving code consistency** and reducing token consumption while accelerating feature development and code quality ### Branch8 | Full-Stack | Aug 2021 – Nov 2021 - **Developed comprehensive Shopify bundle sales management system** enabling merchants to create product bundles with flexible promotional pricing, custom discount rules, and safety stock controls to prevent overselling, **increasing sales plan flexibility** and reducing inventory management complexity for clients - **Built backend infrastructure for bundled product inventory tracking**, implementing real-time stock synchronization logic across multiple product variants, automated price calculation APIs, and webhook integrations to ensure accurate availability across sales channels - **Integrated Stripe payment processing APIs** into existing e-commerce platform, building backend services to synchronize payment status, shipping data, and order fulfillment across multiple systems ### Binflux Inc. | Full-Stack | Aug 2019 – Jul 2021 - **Designed and implemented backend infrastructure** for AI-powered ovum recognition system, building data processing pipelines for batch image analysis, implementing storage architecture for categorized results, and creating APIs for AI model integration and result retrieval - **Solved critical performance issues** in patient management system by identifying inefficient API endpoints through profiling, **reducing key page load times by 80% (from 15s to 3s)** via query optimization, strategic Redis caching, and database index tuning - **Architected normalized PostgreSQL database schemas** for patient records, physician scheduling, and medical imaging workflows, **reducing data redundancy by 40%** and significantly improving query performance across all modules - **Led backend implementation** of core healthcare platform features including patient registration, appointment scheduling, bulk image processing pipelines, and medical record management systems ### Chung-Yo | Backend Engineer | Jul 2017 – Jul 2019 - **Modernized legacy PHP codebase by migrating to Laravel framework**, establishing standardized architecture patterns, improving code maintainability, and enabling faster feature development across the e-commerce platform - **Established environment variable management system** across multiple site deployments, implementing centralized configuration management with full change tracking and audit logging, **significantly reducing configuration errors** and making environment-specific settings easier to manage, debug and traceable. - **Integrated third-party payment gateway APIs** (credit card, mobile payment providers) into existing platform, implementing transaction processing logic, error handling, and reconciliation workflows --- ## Education **National Chung Cheng University** Master's Degree, Physics | 2012 - 2014 **National University of Kaohsiung** Bachelor's Degree, Physics | 2008 - 2012