Available for AI & frontend projects · Medellín → remote

I build AI products people actually talk to.

Real-time voice agents, agentic web apps and AI-powered storefronts, built end to end with Next.js, LiveKit, LangGraph and AWS. 7+ years taking products from first prototype to real users.

Book a 20-min callSee the work →
Download CV (PDF)GitHubLinkedIn
Angel Arrieta
Breathwork voice agent
LiveKit · LangGraph · AWS
LIVE
I can't switch off tonight.
Let's slow it down together. Breathe in for four… hold for seven…
Built for The School of Breath · 2,000+ active users in 3 months
7+ yrs
shipping web, mobile and AI products
2,000+
active users in 3 months · The School of Breath
+35%
qualified leads · Academia del Estratega
<200 ms
median API response · Meditate With Abhi
BUILT FOR
SETIQSmileyPalenke · PCNThe School of BreathAcademia del EstrategaISA Company
SELECTED WORK

Shipped, used, measured.

LIVE AT THE EVENT
Angel at the Huella Digital stand during Conexión InteligenteTHE STAND
Angel with a guest at the SETI stand during Conexión InteligenteCONEXIÓN INTELIGENTE
VOICE AI · EVENTSETI × Corficolombiana

Huella Digital

An AI experience that lets people explore their own digital profile, built on the AI and frontend side with LiveKit, LangGraph and CopilotKit on AWS.

Result · Used live by leaders and executives at Corficolombiana’s Conexión Inteligente forum.
LiveKitLangGraphCopilotKitAWSNext.js
Read the case study →
AI E-COMMERCEQSmiley · Australia

A Shopify store with a built-in AI sales assistant

Designed and built the full custom Shopify storefront and integrated an AI assistant that answers pre-purchase questions and guides shoppers to the right product.

ShopifyAI assistantFrontend
Visit qsmiley.com.au →
The School of Breath app home screen with daily breathing, courses, meditation, sleep music and mantras
The School of Breath
@TheSchoolofBreath · 175K subscribers
VOICE AI · WELLNESSThe School of Breath

A real-time voice agent that guides breathwork

A voice agent that talks users through breathwork and meditation in real time, backed by Node.js and Python services.

Result · 2,000+ active users within three months of launch; 10,000+ monthly requests.
Voice AINode.jsPythonReact Native
See the app →
PLATFORMPalenke · PCN

Digital infrastructure for Afro-Colombian self-governance

A Next.js and NestJS platform for territorial memory, community governance, advocacy and a searchable knowledge library, with a geoportal for the Colombian Pacific.

Next.jsNestJSGeoportal
Visit palenke.org →
WHAT I DO FOR YOU

Three ways to work together, each ending in something real users touch.

01

Voice AI agents

Real-time voice assistants that coach, guide or support your users, from prototype to production.

Ideal for: wellness apps, coaching, customer support
02

AI-powered e-commerce

A custom Shopify storefront with an AI assistant that answers questions and helps shoppers decide.

Ideal for: D2C brands launching or relaunching
03

Product frontends & platforms

Next.js apps, dashboards and agentic interfaces with clean UX, analytics and solid performance.

Ideal for: startups, agencies, organizations
HOW IT GOES

From idea to users, without the guesswork.

01
Clarify

One call to map the user journey and the smallest version worth testing.

02
Prototype

A working interface with the AI wired in, so you react to something real.

03
Ship

Hardened, deployed on AWS or Vercel, with analytics so we know it works.

EXPERIENCE

Hiring? Here’s the short version.

Tech Lead, consultant and hands-on engineer across AI, frontend and full-stack work.

View full CVDownload PDF
2026
AI Expert & Frontend Engineer · SETI
Voice agents and AI experiences with LiveKit, LangGraph, CopilotKit and AWS.
2025 – 2026
Full-stack & AI Developer · The School of Breath
Real-time breathwork voice agent; 2,000+ active users in 3 months.
2025
Full-stack Developer & Tech Lead · Academia del Estratega
Agent-driven lead platform; +35% qualified leads.
Freelance
E-commerce & AI Developer · QSmiley
Custom Shopify storefront for an Australian family-wellness brand, with an AI shopping assistant.
Freelance
Full-stack Developer · Palenke · PCN
palenke.org on Next.js and NestJS, with the SIG-A geoportal for the Colombian Pacific.
2024 – 2025
Full-stack & AI Agent Developer · Meditate With Abhi
Sleep and mindfulness platform; 1,000+ active users in its first quarter, sub-200 ms median responses.
2022 – 2024
Frontend & Lead Developer · ISA Company
Engineering calculation tool; CI/CD from 2 hours to under 20 minutes.
2019 – 2022
Early experience · Startupslab, University of Córdoba, Mipiggybag Ita
Web, research data tools and first product launches.
COMMUNITY

I lead Visible Builders, Medellín’s community of AI builders.

Solo builders, creators and teams showing what they ship with AI through talk nights, dinners and hackathons. Running it keeps me close to what actually works in AI right now, and to the people building it.

Join the communityInvite me to speak
129
builders registered for AI After Hours
12
speakers and demos on stage
3
formats: talk nights, dinners, hackathons
VISIBLE BUILDERS · MEDELLÍN
A builder sharing what he's working on, mic in hand
A speaker on the mic during a Visible Builders talk
A builder presenting to the room at a Visible Builders night
Attendees listening during a Visible Builders talk night
AI After Hours by Visible Builders MedellínTALK NIGHTAI After HoursBuilders share what they’re shipping: AI workflows, products and lessons from the field. Live demos, not panels.DINNER · AUGUST 2026AI Marketing Networking NightA private dinner for founders and marketers: AI, growth and high-value conversations, backed by partner brands.HACKATHONAgentic Voice Wellness HackathonTeams build voice agents that help people breathe, move, focus and rest, from a prep workshop to demo day.

Got an AI product idea? Let’s put it in front of users.

Reply within 24 hours · English & Spanish · Colombia time (UTC−5)

Book a 20-min callangelarrieta34@gmail.comDownload my CV (PDF)