Hi, I'm
Fredy Acuna.
Founder and engineer in Bogotá. I design, code and run Cerkya, HitZero and bici.taxi end to end.
Live on the App Store and Google Play since October 2026
Cerkya. Hire with trust.
A Colombian services marketplace. Post what you need, get offers from verified people nearby, and pay with protection.
- Post a need in about a minute
- Every provider verifies identity with document and selfie
- Payment held in escrow via Wompi, released when the job is done
Your request3 offers
Fix a leaking kitchen sinkChapinero, Bogotá · Today, 4 pm
Verified offers nearby
ARAndrés R. 4.9 · 1.2 km$80.000
CPCamila P. 5.0 · 2.0 km$95.000
JMJorge M. 4.8 · 2.6 km$75.000
Pay protected · AndrésHeld in escrow until done
Fredy Acuna
Founder & engineerFull stack and data engineer. I write in English and Spanish about building with AI agents, infra and product.
Works across TypeScript, Python, Flutter, PostgreSQL and AWS.
AWS Certified Solutions Architectconst fredy = { building: "cerkya.com", shipping: ["hitzero", "bici.taxi"], writing: "ODD + AI agents", status: "online", }
What runs underneath Cerkya.
Built in-house, end to end: a Flutter app on a TypeScript backend.
- Matching
- Geo matching on H3 hexagons in PostgreSQL
- Trust
- AI moderation with per-provider kill switches
- Invoicing
- DIAN e-invoicing, built in-house
- Stack
- FlutterHonoDrizzlePostgreSQLRedisCloudflareDokploy
NOVALYX
An AI slopcore idol who knows he was generated. An original character and a music-video pipeline: songs, stills, motion and the edit, made with AI tools and a set of local Python tools.
Experimentbici.taxi
Connects neighbors in Bosa (Bogotá) with trusted bicitaxi drivers: request a ride on the web with no app, while drivers get nearby trip alerts in a native app. Currently in a pilot.
PilotHitZero
Software for sports clubs, born in cheerleading: athletes, teams, attendance, monthly fees, documents and families in one place. Free plan forever, plus an MCP connection to run the club from Claude.
LiveWriting
All posts- Why Your Next.js Sitemap Is Empty (and the Native Fix)next-sitemap produced an empty sitemap index on my Next.js 16 site because every page renders on request. Here is why it happens, how to confirm it in the build manifests, and how I replaced it with a native app/sitemap.ts and robots.ts.
- Organic Driven Development (ODD): How I Work With AI Agents Every DayThe workflow I use with Claude Code across my projects: authorize, explore, classify small vs large with the "resume from the diff" test, track a feature document before the first write, implement task by task with tests first, and close with a Risk line. It comes from Gentle AI, and here is how it looks in real repos.
- How to Add llms.txt to a Next.js Site (Generated From Your Content)llms.txt is a plain-markdown index of your site meant for language models. Here is how I added one to my Next.js portfolio with a route handler that builds it from posts and projects, so it never goes out of date.
Have something that needs to ship?
Show emailNew posts in your inbox.
One email when something new ships. No spam.