https://lien0214.github.io/en/ Recent content in Yi-Wei Lien · 連奕維 on Yi-Wei Lien Hugo en Sun, 14 Jun 2026 00:00:00 +0000 https://lien0214.github.io/en/posts/seam-carving-gpu/ Sun, 14 Jun 2026 00:00:00 +0000 https://lien0214.github.io/en/posts/seam-carving-gpu/ A profiling-driven study of exact seam carving on an NVIDIA V100 — optimizing Naive → Fused → Prefetch → BytePtr → Tiled, reaching 5.73 ms/seam at 8K, and then proving the ceiling is structural. https://lien0214.github.io/en/projects/mem-gen/ Sun, 01 Mar 2026 00:00:00 +0000 https://lien0214.github.io/en/projects/mem-gen/ When a model fine-tunes to believe X but its pretraining says Y — which wins, and can you steer that without retraining? https://lien0214.github.io/en/projects/stock-analysis/ Thu, 01 Jan 2026 00:00:00 +0000 https://lien0214.github.io/en/projects/stock-analysis/ Systematic daily trading strategies for the Taiwan Stock Exchange: signal generation, backtesting, live paper-trading, and a multi-broker execution dashboard. https://lien0214.github.io/en/posts/leaving-shopback/ Thu, 20 Nov 2025 00:00:00 +0000 https://lien0214.github.io/en/posts/leaving-shopback/ Yesterday marked the end of my six-month journey as a Software Engineer Intern on ShopBack's Backend Core-Experience Team. Gratitude, lessons, and what's next. https://lien0214.github.io/en/posts/shopback-monorepo/ Sat, 01 Nov 2025 00:00:00 +0000 https://lien0214.github.io/en/posts/shopback-monorepo/ The hardest task of my Shopback internship: migrating inter-service API calls to direct function calls in a TypeScript monorepo — with no prior art on my team and a mentor who hadn't seen it either. https://lien0214.github.io/en/posts/shopback-impact/ Fri, 10 Oct 2025 00:00:00 +0000 https://lien0214.github.io/en/posts/shopback-impact/ Adding merchant icons to a selection panel at Shopback. 30% more users clicked in. It made me rethink what 'impactful work' actually means. https://lien0214.github.io/en/posts/bubblo-devlog/ Thu, 10 Jul 2025 00:00:00 +0000 https://lien0214.github.io/en/posts/bubblo-devlog/ Three months, six people, one 2D platformer. What I learned adapting corporate workflow to a student team — and why the retrospective felt wrong the whole time. https://lien0214.github.io/en/posts/leaving-cmoney/ Sun, 20 Apr 2025 00:00:00 +0000 https://lien0214.github.io/en/posts/leaving-cmoney/ Nine months building financial data APIs at CMoney: learning OOP the hard way, inheriting production code that predates good design, and wrapping up just as agentic programming started changing what 'coding work' even means. https://lien0214.github.io/en/projects/bubblo/ Tue, 01 Apr 2025 00:00:00 +0000 https://lien0214.github.io/en/projects/bubblo/ A 2D pixel platformer built in Unity over one semester. Led a 6-person team through 600+ commits — bubble physics, a Wonderland full of caged villagers, and needle creatures that want to pop you. https://lien0214.github.io/en/projects/e-motchi/ Fri, 01 Nov 2024 00:00:00 +0000 https://lien0214.github.io/en/projects/e-motchi/ Fine-tuned multilingual LLMs for bidirectional translation between emoji sequences and natural Traditional Mandarin, with a from-scratch dataset built around Taiwan internet culture. https://lien0214.github.io/en/about/ Mon, 01 Jan 0001 00:00:00 +0000 https://lien0214.github.io/en/about/ About Yi-Wei Lien — NTU CS MS student and Backend & AI Engineer. Research at MIRLab (quantitative trading on TWSE) and MSLab (LLM knowledge conflicts and memory). Former backend intern at Shopback and Cmoney. https://lien0214.github.io/en/game/ Mon, 01 Jan 0001 00:00:00 +0000 https://lien0214.github.io/en/game/ A 2D platformer game demo built in Unity by a 6-person team. Project lead, 600+ commits, 5 levels. https://lien0214.github.io/en/contact/ Mon, 01 Jan 0001 00:00:00 +0000 https://lien0214.github.io/en/contact/ Contact Yi-Wei Lien — Backend & AI Engineer at NTU. Reach out for research collaboration, job conversations, or engineering discussions. https://lien0214.github.io/en/resume/ Mon, 01 Jan 0001 00:00:00 +0000 https://lien0214.github.io/en/resume/ Resume of Yi-Wei Lien — NTU CS MS, Backend & AI Engineer. Experience at Shopback and Cmoney. Research at MIRLab (quant trading) and MSLab (LLM knowledge conflicts). Targeting AI engineering roles in 2027.