Custom PC Builder & Laptop Customization (Freelance)•Self-Employed•2023 — Present
Build and tune gaming/coding laptops and desktops for best price-to-performance, tailored to specific user needs.
- Pick optimal laptop or PC components for gaming or development workloads based on budget and goals.
- Install clean Windows or set up dual-boot Windows + Linux; configure Hackintosh on request (with noted stability trade-offs).
- Update BIOS/firmware, undervolt CPU/GPU, and tune RAM frequency/timings to safe maximums for stability and performance.
- Document configurations and maintenance steps so users can safely update and sustain their systems.
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Home Business Owner•Mooncake Distribution (Seasonal)•2019 — 2025
Ran a seasonal mooncake distribution business, handling sourcing, inventory, sales, and last-mile fulfillment during peak festival periods.
- Coordinated supplier relationships and quality checks to keep defect rates near zero during peak volume.
- Managed seasonal inventory planning and cash flow for high-demand weeks, minimizing overstock and spoilage.
- Built repeat customer base through responsive support, reliable delivery, and packaging improvements.
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System Administrator•ETH Mining Rigs (Self-Operated)•2017 — 2019
Deployed and maintained GPU/ASIC Ethereum mining rigs with uptime-focused monitoring and cost control.
- Assembled and tuned rigs (BIOS tweaks, firmware updates, overclock/undervolt) for stable hashrates.
- Automated health checks, temperature alerts, and graceful restarts to keep downtime minimal.
- Optimized power usage and cooling layouts to balance performance with electricity costs.
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Prompt Engineer•Independent•2024-12 — 2025-06
Designed and iterated prompts for LLM workflows, focusing on accuracy, tone, and safety for varied tasks.
- Built reusable prompt patterns for summaries, code assistance, and troubleshooting with guardrails.
- Benchmarked outputs across models, refining instructions to reduce hallucinations and improve clarity.
- Documented prompt playbooks so non-technical users could replicate high-quality results consistently.
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