Available for new opportunities

Full-stack developer
& AI builder.

Independent builder shipping AI-powered SaaS end-to-end. Three production products launched in 2025–2026 on Next.js, Anthropic Claude, Stripe and Supabase.

13+ years delivering digital products for Fortune 500 — Amazon/Audible, Citi, Verizon. Founded a top-ranked Costa Rican web agency that ran for over a decade.

San José, Costa Rica hello@edgarconejo.com
01 — Approach

How I build.

End-to-end ownership over the whole stack, picked tools, shipped product. Six principles I keep close — they decide what makes it into production and what doesn't.

01

Built around connections

Tools chosen by how cleanly they fit together — Next.js, Supabase, Stripe, Claude. The graph matters more than the node.

02

Ship, observe, refine

Code is always in flux. Small movements to production beat big plans on paper. Real users teach faster than roadmaps.

03

Speed and rigor, both

Indie velocity with Fortune 500 rigor — security audits, observability and accessibility on every project, not just the big-budget ones.

04

The details compound

A thousand small choices stack into emergent quality. 33 security issues found and fixed in a single pre-launch audit; that's the bar.

05

Each project sharpens the next

What I learned building Atiendo24 made AdPipe faster; AdPipe made Pregnalyze cleaner. Compounding craft, not parallel restarts.

06

End-to-end ownership

Frontend, backend, AI, payments, auth, deploy, analytics. One engineer, full responsibility, no handoffs to lose context.

02 — Toolkit

Skills & tech stack.

The materials I reach for to take an idea from a sketch to a shipped product — chosen for velocity, reliability, and how well they connect to each other.

Frontend

Next.jsReact.jsTypeScriptTailwind CSSShadcn/UIHTML5 / CSS3WordPressDivi

Backend

Node.jsExpress.jsSupabasePostgreSQLPrisma ORMNeon PostgreSQL

AI / APIs

Anthropic Claude APIPrompt EngineeringTool UseWhatsApp Cloud APIGoogle Calendar APIOpenAI APIMCP

Payments

StripeKushki

Auth

ClerkSupabase AuthGoogle OAuth

Email

ResendReact Email

DevOps

VercelRailwayGitGitHubSentryGA4GTMCloudflare

Other

Row Level SecurityMulti-tenant ArchitectureBullMQWebhooksCron JobsREST APIsSchema.org SEO
03 — Selected work

Things I've shipped.

Three production SaaS products built and launched independently in 2025–2026 — each one a real friction in the world, the constraint that makes the obvious answer fail, and what got shipped.

Atiendo24

atiendo24.com
Next.jsClaude APIWhatsApp CloudSupabaseClerkGoogle CalendarStripe
Problem

Small businesses lose customers who message after hours, on weekends, and during peak load. Human staff doesn't scale to 24/7.

Constraint

Generic chatbots break trust. Off-the-shelf agents can't book real appointments, charge customers, or honor each business's voice and rules.

Outcome

A multi-tenant WhatsApp AI agent that schedules, charges and answers 24/7 in each business's identity. Pre-launch security audit: 33 issues fixed.

AdPipe

adpipe.io
Next.jsClaude APIBullMQRailwayStripeNeon PostgreSQL
Problem

Writing Meta ad copy is slow and repetitive. The gap between strong creative and weak creative is what kills ad budgets.

Constraint

Generic LLM output is bland — it ignores persuasion frameworks, breaks ad policy, and arrives unstructured for Ads Manager.

Outcome

Paste a product URL, get 12 ad copy variants across 4 persuasion styles in 30 seconds. Policy-checked, structured, export-ready. Launched on Product Hunt, Feb 2026.

Pregnalyze

pregnalyze.com
Next.jsSupabaseStripeSchema.org SEOSentry
Problem

Pregnancy is lived through fear and uncertainty — yet the evidence to answer those fears already exists in published research.

Constraint

The research is scattered, locked in jargon, and the apps that promise help often harvest the most sensitive health data instead.

Outcome

Six evidence-based calculators built on 54+ peer-reviewed studies covering 500,000+ pregnancies. Privacy-first — zero storage of sensitive health data.

04 — Career

Path so far.

A decade-plus of building digital products — from Fortune 500 brands to my own indie SaaS. Three chapters, one direction.

2009 — 2025

Foundation

Founded Galacttic in 2012. Frontend for Amazon/Audible, Citi and Verizon at PGD.

2025

Turning point

Velocity, ownership and the choice of what to build belonged to clients. Time to take it back.

2025 — present

Independent

Atiendo24, AdPipe and Pregnalyze — shipped solo on AI infrastructure.

2025 — Present

Co-Founder & Full-Stack Developer

Built and launched AI-powered Meta ad copy generator from scratch.

2025 — Present

Founder & Full-Stack Developer

Built evidence-based pregnancy risk calculator suite based on peer-reviewed medical research.

2025 — Present

Founder & Full-Stack Developer

Built multi-tenant WhatsApp AI agent platform for businesses.

April 2021 — May 2025

Frontend Developer

Publicis Global Delivery (PGD)

Frontend developer for Fortune 500 clients across email and web campaigns.

Clients: Amazon / Audible (2022–2025) · Citi (2025) · Verizon (2021–2022)

2012 — 2026

Founder & Web Developer

Founded and operated a top-ranked web agency in Costa Rica for 13+ years. Delivered 10+ projects across landing pages, e-commerce, and corporate websites.

05 — Background

Education & certifications.

06 — Let's talk

Get in touch.

Working on something interesting? I'm open to full-time roles, contract work, and product collaborations.

Let's build something good.

Email is the fastest way to reach me — usually a reply within a day.

hello@edgarconejo.com