Insights & Intelligence
Technical guides, industry analysis, and engineering insights from the team building AI-powered solutions for 130+ clients worldwide.
Part 1 · The Maths Problem We Tried to Avoid
The Maths Problem We Tried to Avoid
An LLM is, in some ways, the probability chapter we all hoped would stay optional. A plain-language look at what next-token prediction really is — and what a model must learn about the world to keep getting it right.
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What Happens When Software Understands Intent?
Apps like Instagram, TikTok, YouTube already know what you want to watch. The harder question: can software know what you're trying to do — and act on it before you tap through five screens?
5 min read
A chat box was the smallest thing on the roadmap
How a routine messaging ticket on a creator marketplace turned into a product — and why generic chat was the wrong shape for the job.
5 min read
Building a Ride-Hailing Platform to Rival Uber and Ola — All by Hand
How we built a highly scalable ride-hailing backend with three separate databases, a custom fare engine, and Aadhaar biometric KYC integration — without AI assistance.
10 min read
The FDE Advantage: Why Your Next Engineering Hire Should Be "Forward Deployed"
Learn why the Forward Deployed Engineer (FDE) is the ultimate bridge between product development and customer reality, and why they might be the most strategic hire you make this year.
5 min read
Two-Way Task Sync Between Google Sheets and ClickUp Using n8n
How we built a lightweight n8n automation that lets a team log issues in a Google Sheet, automatically upserts them as ClickUp tasks, and syncs task status back to the sheet in real time — no code, no custom integrations.
7 min read
How We Enabled Dynamic Open Graph Previews for a React SPA
React SPAs break WhatsApp and social link previews because crawlers can't execute JavaScript. Here's how we solved it with a Cloudflare Worker for dynamic OG injection, an Azure Function for image compression, and the iOS-specific bugs that silently kill previews.
7 min read
What Is AI Integration? A Complete Guide for Business Leaders
Learn what AI integration means, how it works, and why it matters for your business. A practical guide from TESARK's engineering team covering LLM integration, agentic workflows, and enterprise deployment strategies.
3 min read
When a Cloudflare Worker Injected Malicious Code into Our Application
A security incident post-mortem: how a compromised Cloudflare account led to malicious script injection at the edge, bypassing our origin server entirely — and the steps we took to detect, fix, and prevent it.
4 min read