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Blog
Engineering notes
Engineering write-ups on decisions behind FLITO, Duleko and the rest - the reasoning, not just the changelog.
Latest6 min read
Who Can Call Me: Keeping Phone Numbers Private
How Duleko keeps phone numbers private: their own table, one can_call() check behind every Call button, and a chat that refuses messages with a number in them.
Duleko- PostgreSQL
- Privacy
- Supabase
5 min read
Real Road Distances for FLITO on Free Services
How FLITO gets road distances and route lines from a free OSRM server: queued, batched, cached for a week, thinned to 5 m, and never fatal when it fails.
FLITO6 min read
ID Checks Behind Duleko's Verified Badge
How Duleko made its verified badge mean an ID was checked: photos in a private bucket, 10-minute links, and a badge only one Postgres function can grant.
Duleko7 min read
Mapping People Without Revealing Where They Live
How Duleko's map shows skilled people nearby without revealing where anyone lives: a work area picked once, ~1 km squares and counts for guests, in Postgres.
Duleko8 min read
Billing by Nepali Month: FLITO's Invoices and Fees
How FLITO records payments it never holds, bills truck owners by Nepali month, and numbers PDF invoices per Nepali fiscal year, with dates in Bikram Sambat.
FLITO6 min read
Android Notifications Without Firebase on Duleko
Duleko's Android app shows chats and work requests in the notification bar with no push service, and keeps email inside Brevo's free 300 a day. Here's how.
Duleko- Android
- Supabase
- PostgreSQL
8 min read
EPAM Interview Experience 2026: Rounds and Questions
My EPAM campus placement experience (August 2026): eligibility, the LRU cache coding round, the GD topic, technical interview questions and tips that worked.
6 min read
Engineering in Nepal vs India: A Nepali Student's Story
Why I chose to study engineering in India instead of Nepal: the IOE entrance, Chitkara fees and Nepali student concessions, placements, and the honest trade-offs.
7 min read
Tech Lead at Duleko: What's Live and What's Next
As Tech Lead of Duleko, a bilingual local skills marketplace for Nepal, I own the platform end to end. Here's what's live today - guest browsing, typo-tolerant distance search, price negotiation, per-person call privacy and a native Android build - the one rule every screen is held to, and what we're building next.
Duleko- Product Engineering
- Supabase
- PostgreSQL
6 min read
How FLITO Decides Which Truck Fits a Load
FLITO filters out every truck that can't do a job, scores the rest out of 100 on fit, proximity, reputation, price and readiness, and reserves a truck's days with one conditional write so two bookings can never land on the same truck. Here's how the matching works and why.
FLITO4 min read
Making a React Portfolio Readable to Search Engines
This site is a Vite + React single-page app, which by default hands crawlers an almost empty page. Here's how one metadata table now drives both the live React head and a prerendered HTML file per route, why the sitemap dates come from git, and what Google's Rich Results Test still caught.
4 min read
Enforcing Business Rules in Postgres, Not the Frontend
Duleko's work lifecycle - pending, accepted, confirmed, completed - is modelled as Postgres triggers with Row Level Security on every table, so a modified client can't skip a step. Here's why that decision, plus the outbox pattern behind its notifications.
Duleko2 min read
Treat Email Verification Codes Like Passwords
A 6-digit email code is a password with worse UX expectations and a shorter lifespan - so FLITO stores only its hash, expires it in 15 minutes, burns it after one use, and locks out after 5 wrong tries. Here's the reasoning and what it protects against.
FLITO- Security
- Node.js
- Authentication