Mark Cheng

Backend Software Engineer with 1+ year commercial experience building production B2B SaaS using Python and Django REST Framework. Skilled in DRF, Celery, role-based access control, database design, asynchronous workflows, and multi-environment deployment. Experienced in translating business requirements into scalable backend solutions, optimising database performance, and debugging production issues.Passionate about writing clean, maintainable code and delivering impact through efficient backend systems.ExperienceSoftware Engineer (Python / Django)Supply Chain & Procurement SaaS Platform | 2021 – 2023Built production RESTful APIs using Django REST Framework (DRF)Designed database schemas & validation rules based on business requirementsImplemented RBAC and custom authentication logicIntegrated third-party APIs for secure data exchangeManaged asynchronous workflows with Celery and Redis (emails, DB updates, scheduled tasks)Optimised queries using select_related/prefetch_related to reduce AWS costsDeployed across Dev → UAT → Production with Git feature-branch workflowResolved production issues via log analysis and service restartsPharmacy Assistant – Australia | 2024 – PresentSupport operational workflows and maintain strict data accuracy and confidentialityInternational Sales & Project Manager – Taiwan | 2018 – 2021Managed multi-stakeholder commercial projects; strengthened requirement analysis and execution skillsEducationGraduate Certificate of Information Technology (Commencing 2026) – Macquarie University, SydneyBachelor of Health Dietetics and Industry Management – Chung Shan Medical University, Taiwan