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<!doctype html>
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<head>
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<title>Blog — Saptarshi Sadhu | Systems, AI & Engineering</title>
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<meta property="og:title" content="Blog — Saptarshi Sadhu | Systems, AI & Engineering" />
<meta property="og:description" content="Practical articles on full-stack systems, machine learning research, DevOps, and software engineering by Saptarshi Sadhu." />
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<img
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<span class="text-white font-bold tracking-widest text-xs lg:text-sm uppercase">Saptarshi • Portfolio</span>
</div>
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<a class="nav-link" href="3d.html">Home</a>
<a class="nav-link" href="3d.html#about">About</a>
<a class="nav-link" href="3d.html#skills">Skills</a>
<a class="nav-link" href="3d.html#projects">Projects</a>
<a class="nav-link" href="3d.html#experience">Experience</a>
<a class="nav-link" href="3d.html#education">Education</a>
<a class="nav-link" href="3d.html#achievements">Achievements</a>
<a class="nav-link text-cyan-400 hover:text-cyan-300" href="blog.html">Blog</a>
<a class="nav-link" href="gallery.html">Gallery</a>
<a class="nav-link" href="3d.html#contact">Contact</a>
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<!-- Hamburger -->
<button id="hamburger" aria-label="Toggle menu" aria-expanded="false">
<span></span><span></span><span></span>
</button>
</div>
<!-- Mobile dropdown -->
<nav id="mobile-nav-blog" aria-label="Mobile navigation">
<a href="3d.html">Home</a>
<a href="3d.html#about">About</a>
<a href="3d.html#skills">Skills</a>
<a href="3d.html#projects">Projects</a>
<a href="3d.html#experience">Experience</a>
<a href="3d.html#education">Education</a>
<a href="3d.html#achievements">Achievements</a>
<a href="blog.html" style="color:#06b6d4">Blog</a>
<a href="gallery.html">Gallery</a>
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<main class="pt-32 pb-40 max-w-6xl mx-auto px-6">
<!-- Section Header -->
<div class="mb-16 fade-up">
<h3 class="text-primary text-xs font-bold tracking-[0.25em] uppercase mb-3 flex items-center gap-3">
<span class="w-8 h-px bg-primary/60"></span>
Knowledge Hub
<span class="w-8 h-px bg-primary/60"></span>
</h3>
<h1 class="text-5xl md:text-6xl font-serif text-white font-bold tracking-tight mb-4 title-glow">
Blog
</h1>
<p class="text-slate-400 text-lg max-w-xl leading-relaxed">
Thoughts on Systems, AI, and Engineering —<br class="hidden md:block" />
written from the intersection of code and curiosity.
</p>
<!-- Decorative line -->
<div class="mt-8 h-px w-full bg-gradient-to-r from-cyan-500/30 via-purple-500/20 to-transparent"></div>
</div>
<!-- ── BLOG GRID ── -->
<div class="blog-grid grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-7">
<!-- ── CARD 1 — Featured / ML Research ── -->
<article
class="blog-card bg-[#0b1121] rounded-2xl p-7 fade-up flex flex-col gap-5 overflow-hidden"
style="animation-delay: 0.05s"
onclick="window.location='blog_posts/ml.html'"
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<div class="w-10 h-10 rounded-xl bg-emerald-500/10 border border-emerald-500/20 flex items-center justify-center shrink-0">
<span class="material-symbols-outlined text-emerald-400 text-[20px]">science</span>
</div>
<time class="text-slate-600 text-[10px] font-mono tracking-wider mt-1">Mar 2026</time>
</div>
<!-- Content -->
<div class="flex-1">
<h2 class="text-white text-lg font-bold mb-2 leading-snug group-hover:text-primary">
Urban Air Quality Prediction Using Temporal ML Models
</h2>
<p class="text-slate-400 text-sm leading-relaxed line-clamp-3">
How I built a machine learning pipeline to predict VOCs, O₃, and NOx concentrations in urban environments — from raw sensor data to real-time forecasts.
</p>
</div>
<!-- Tags -->
<div class="flex flex-wrap gap-2">
<span class="tag-pill text-emerald-400 border-emerald-500/30 bg-emerald-500/5">Machine Learning</span>
<span class="tag-pill text-blue-400 border-blue-500/30 bg-blue-500/5">Research</span>
<span class="tag-pill text-slate-400 border-white/10 bg-white/5">PyTorch</span>
</div>
<!-- Read more -->
<div class="read-more-btn flex items-center gap-2 text-emerald-400 text-xs font-bold tracking-widest uppercase mt-auto">
Read More <span class="arrow">→</span>
</div>
</article>
<!-- ── CARD 2 — Full Stack Architecture ── -->
<article
class="blog-card bg-[#0b1121] rounded-2xl p-7 fade-up flex flex-col gap-5 overflow-hidden"
style="animation-delay: 0.1s"
onclick="window.location='blog_posts/fullstack.html'"
>
<div class="absolute -top-10 -right-10 w-40 h-40 bg-cyan-500/6 rounded-full blur-3xl pointer-events-none"></div>
<div class="flex items-start justify-between gap-3">
<div class="w-10 h-10 rounded-xl bg-cyan-500/10 border border-cyan-500/20 flex items-center justify-center shrink-0">
<span class="material-symbols-outlined text-cyan-400 text-[20px]">layers</span>
</div>
<time class="text-slate-600 text-[10px] font-mono tracking-wider mt-1">Feb 2026</time>
</div>
<div class="flex-1">
<h2 class="text-white text-lg font-bold mb-2 leading-snug">
Architecting Scalable Full Stack Systems From Scratch
</h2>
<p class="text-slate-400 text-sm leading-relaxed line-clamp-3">
A deep dive into the design decisions behind building scalable full-stack applications — from database schema design to REST API contracts and frontend state management.
</p>
</div>
<div class="flex flex-wrap gap-2">
<span class="tag-pill text-cyan-400 border-cyan-500/30 bg-cyan-500/5">Full Stack</span>
<span class="tag-pill text-blue-400 border-blue-500/30 bg-blue-500/5">Systems</span>
<span class="tag-pill text-slate-400 border-white/10 bg-white/5">Next.js</span>
</div>
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<time class="text-slate-600 text-[10px] font-mono tracking-wider mt-1">Feb 2026</time>
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<h2 class="text-white text-lg font-bold mb-2 leading-snug">
CI/CD, Docker, and Zero-Downtime Deployments
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Practical lessons from setting up automated deployment pipelines — containerizing apps with Docker, writing CI/CD workflows, and shipping without breaking production.
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<time class="text-slate-600 text-[10px] font-mono tracking-wider mt-1">Jan 2026</time>
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DSA Patterns That Actually Matter in Interviews
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<p class="text-slate-400 text-sm leading-relaxed line-clamp-3">
A pragmatic guide to the 12 DSA patterns — sliding window, two pointers, monotonic stacks, and more — with real implementations and when to apply each one.
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<span class="tag-pill text-orange-400 border-orange-500/30 bg-orange-500/5">DSA</span>
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<span class="tag-pill text-slate-400 border-white/10 bg-white/5">Python</span>
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<span class="material-symbols-outlined text-purple-400 text-[20px]">hub</span>
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<time class="text-slate-600 text-[10px] font-mono tracking-wider mt-1">Jan 2026</time>
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<h2 class="text-white text-lg font-bold mb-2 leading-snug">
Designing AI Systems That Scale Beyond the Prototype
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<p class="text-slate-400 text-sm leading-relaxed line-clamp-3">
The gap between a working ML model and a production AI system is enormous. Here's how to think about inference pipelines, latency, model versioning, and serving at scale.
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<span class="tag-pill text-purple-400 border-purple-500/30 bg-purple-500/5">AI Systems</span>
<span class="tag-pill text-emerald-400 border-emerald-500/30 bg-emerald-500/5">ML Ops</span>
<span class="tag-pill text-slate-400 border-white/10 bg-white/5">Backend</span>
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<time class="text-slate-600 text-[10px] font-mono tracking-wider mt-1">Dec 2025</time>
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<h2 class="text-white text-lg font-bold mb-2 leading-snug">
Flutter Architecture Patterns for Production Apps
</h2>
<p class="text-slate-400 text-sm leading-relaxed line-clamp-3">
What I learned shipping Flutter apps to production — clean architecture, state management with Riverpod, and how to structure code that survives a growing team.
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<span class="tag-pill text-blue-400 border-blue-500/30 bg-blue-500/5">Flutter</span>
<span class="tag-pill text-cyan-400 border-cyan-500/30 bg-cyan-500/5">Mobile</span>
<span class="tag-pill text-slate-400 border-white/10 bg-white/5">Dart</span>
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<h2 class="text-white text-2xl font-bold mb-2">More posts in the pipeline</h2>
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Writing about systems programming, AI deployment strategies, and engineering craft. New posts ship regularly.
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