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Available for remote · USA / Europe · South America

Javier
Olivieri

Independent AI Engineer · Agentic Systems Architect

I design and build agentic AI systems and automation architectures — from autonomous multi-agent pipelines and RAG systems to voice AI products and full-stack AI-native applications that ship to production.

With 17+ years in full-stack development and 3+ years specifically in production AI systems, I specialize in mapping business processes end-to-end, identifying where AI creates real leverage, and executing — from technical blueprint to deployed system. I currently run multiple production AI products serving real clients daily. You get a partner who thinks in outcomes, not tickets.

View Work ↓ Download PDF ↓ Let's Talk →
Javier Olivieri
✉
javi10823@gmail.com
in
linkedin.com/in/javierolivieri
github.com/javi10823
⊕
devlabs.dev
📍
Rosario, Argentina
17 +
Years Dev Experience
40 +
Shipped Projects
8 +
US Clients
5
AI Products Live
What I Do

End-to-end AI systems
that actually ship.

From business audit to production deployment.

🤖
Agentic AI Systems
Production multi-agent workflows using Claude API, CrewAI, MCP and LangGraph. Tool use, RAG pipelines, vision agents, human-in-the-loop. Already running in production, not PoCs.
Claude APILangGraphCrewAIMCPRAGVision
🎙️
Voice AI & Conversational
End-to-end voice agents with Retell AI, n8n middleware, GHL integration. Built and deployed a full dialer PoC for US healthcare in weeks, not quarters.
Retell AITwilion8nGHLVoice
⚙️
Process Design & Automation
End-to-end workflow audits: map ops, identify bottlenecks, design scalable automated systems — n8n, Make, APIs, LLMs, document parsing, SaaS integrations.
n8nMakeZapierWebhooksAPIs
🏗️
AI-Native Product Architecture
Full-stack AI products from scratch — Next.js + FastAPI + Claude API + Postgres + vector DBs. Technical blueprint, architecture, and execution in one engagement.
Next.jsFastAPIClaude APIPostgresVector DBs
Stack & Skills

Tools I build with.

LLM Systems
ClaudeOpenAIGeminiPrompt EngineeringToken ManagementRAG PipelinesVector DBs (Qdrant, pgvector)EmbeddingsStructured OutputsPrompt Caching
Agent Orchestration
LangGraphLangChainLlamaIndexCrewAIMCP ServersClaude CodeMulti-agent workflowsHuman-in-the-loopTool use
Voice AI & Observability
Retell AITwilion8n middlewareLangfuseAudit loggingCustom tracingDebug-mode pipelines
Backend & Data
NestJSNode.jsPython (FastAPI, Django/DRF)PostgreSQLMongoDBPrismaRESTGraphQLDocument parsingAPI + Webhooks
Frontend & Infra
Next.jsReactReact NativeTypeScriptTailwindAWSDockerVercelRailwayCI/CDGitHub Actions
Leadership
Tech Lead (6+ yr)Systems thinkingProcess designOps consultingRemote teamsUS clientsHiring pipelines
Portfolio

Selected work.

Real systems, real outcomes. From AI agents to government platforms to US startup products.

💬
Conversational AI · Lead Conversion · Streaming
D'Angelo Marmolería — Valentina, Lead Conversion Chatbot
Customer-facing conversational agent (Valentina) that guides prospects through a full quoting intake — collecting measurements, materials, and project details — then delivers a real-time quote via streaming. Integrated with Google Drive for plan uploads and Google Sheets for lead capture. Replaces a high-dropout manual intake form, converting cold traffic into qualified leads with budget clarity before the first human contact.
~0
Manual intake
Real-time
Quote streaming
Google
Sheets + Drive
Claude APIStreamingNext.jsTypeScriptGoogle DriveLead CaptureVercel
View Live GitHub
📊
AI Marketing · Meta Ads · Analytics Dashboard · PoC
HARA Nutrition — AI-Powered Marketing PoC
End-to-end AI marketing PoC built for Bold Coffee as a case study. Designed and launched Meta Ads campaigns targeting nutrition personas, then built a modular real-time dashboard pulling live data from the Meta Marketing API — spend, impressions, CTR, ROAS, and audience breakdowns. Demonstrates the full loop: AI-assisted creative → paid traffic → live performance intelligence, without a BI team or third-party analytics tools.
Meta API
Live data
AI
Creative assist
0 tools
No BI stack
Meta Marketing APIMeta AdsNext.jsClaude APIDashboardAI CreativeBold Coffee
Coming Soon GitHub
🪨
Agentic AI · Computer Vision · Automation
D'Angelo Marmolería — AI Quoting Agent Soon
Conversational AI agent that reads architectural floor plans, applies 30+ business rules, validates material stock, and auto-generates PDF + Excel quotes. Built with Claude API, Next.js, streaming, and Google Sheets lead capture. Replaced a fully manual 3hr process.
3hrs→min
Quote time
70%
Leads recovered
30+
Business rules
Claude APIAgenticNext.jsTypeScriptGoogle SheetsPDF Gen
View Live GitHub
📞
AI Voice Dialer
HealthHue Soon
Retell AI voice agent + n8n orchestration + GHL CRM for a US healthcare client. End-to-end voice-first PoC with React setter panel for live operator handoff.
Production
Grade PoC
Weeks
Time to ship
Retell AIn8nGHLReactRailwayVercel
View Live
🛡️
Insurance PWA
Sinia — Adjuster Field Ops Soon
PWA for an independent insurance adjuster (La Segunda Seguros). 37 canonical fields, 3 conversational surfaces, Google Drive storage, offline-first with Service Worker + IndexedDB. Two-model pipeline: Haiku classifies, Sonnet drafts.
8 weeks
MVP delivery
$600+$35/mo
All-in cost
Next.js PWAClaude APIDrive OAuthdocxtpl
View Live
☕
SaaS · Monorepo · Multi-tenant
Bold MenuApp — Restaurant SaaS
Multi-tenant SaaS restaurant menu platform built as a Turborepo monorepo with NestJS, Next.js, Prisma, and MinIO. Deployed to Railway + Vercel with QR generation, auto-translate, and multi-language support.
TurborepoNestJSPrismaMinIOVercel
View Live GitHub
🏛️
Gov Platform · Full-Stack · 20 modules
SILABIP — National Library Platform
20-module government platform replacing a legacy Java/IE11 system for Argentina's national library network. NestJS + Next.js + PostgreSQL + MinIO + Docker. 15+ months of architecture, documentation, and UX leadership.
NestJSNext.jsPostgreSQLMinIODocker
View Wireframe GitHub
🏥
Healthtech · Full-Stack · 10k+ users
Sama Fertility Platform
Full system architecture for a US fertility care platform — web + mobile — serving 10k+ patients. Designed specs directly with CTO, led a distributed 4-person team, and shipped CI/CD pipelines cutting deploy time from days to under 2 hours.
React NativeNode.jsAuth0StripeAWS
View Live GitHub
🚀
Brand · Web · AI Consulting
DevLabs — AI Consulting Website
Full brand and web rebuild for DevLabs, repositioning from a generic dev shop to an AI-first consulting firm. Dark aesthetic, AI consulting positioning, performance-optimized vanilla HTML/CSS/JS. Deployed to Netlify.
BrandingHTML/CSS/JSNetlifyAI Consulting
View Live GitHub
🎯
AI Lead Gen · Job Board Scraping · Claude API
Job Analyzer — AI-Powered Lead Generation
DevLabs' own outbound lead gen engine. Scrapes job boards (Greenhouse, Lever) and uses Claude API to classify postings — identifying companies actively hiring for roles that signal automation and AI consulting needs. Turns job board noise into qualified prospect lists.
Claude APILead GenNext.jsScrapingGreenhouseLeverVercel
View Live GitHub
🏛️
Web · Brand · Performance
D'Angelo Marmolería — Website Rebuild
Full website rebuild for a marble & stone company. Dark luxury aesthetic, WebP image optimization, smooth animations, and contact-driven conversion layout. Vanilla HTML/CSS/JS deployed via cPanel.
HTML/CSS/JSWebPPerformancecPanelDark UI
View Live GitHub
🧠
AI Product · Chat · Streaming
Freud AI — Psychoanalytic Chat
AI chat application channeling Sigmund Freud — built with Next.js + Claude API with real-time streaming. A showcase of personality-driven AI product design and LLM integration patterns.
Claude APINext.jsStreamingVercel
View Live GitHub
Experience

Where I've built.

DevLabs
Rosario, Argentina
2022 – Present
Founder & Independent AI Engineer
STARDEVS LLC · DEVLABS.DEV · Independent · Solo Operator
I operate as an independent AI engineer through DevLabs (STARDEVS LLC, Delaware). End-to-end ownership: discovery, architecture, code, deploy, and direct client support. No middle layer, no handoffs.
Built Valentina, a vision-based AI quoting agent (Claude API) for a marble & stone company: reads architectural floor plans, applies 30+ business rules, auto-generates PDF + Excel quotes — cutting quote time from 3 hours to under 5 minutes. Live in production with full observability stack (audit events, debug mode, PII sanitizer at 5.84ms p95).
Built HealthHue, an AI voice dialer PoC for a US healthcare client: Retell AI conversational agent + n8n orchestration + GHL CRM integration + React setter panel for live operator handoff. Full voice-first product end-to-end in weeks.
Architected a 20-module government platform modernization (NestJS + Next.js + PostgreSQL + MinIO) replacing a legacy Java/IE11 system serving Argentina's national popular library network (CONABIP, ~5,000 libraries).
Delivered AI-native full-stack products for US clients across healthtech, fintech, and Web3 — from blueprint to deployed production system.
Agentic AI SystemsVoice AIRAG PipelinesMCP ServersProcess Design & AutomationAI-Native ProductsTechnical Strategy
Sama Fertility
San Francisco, CA
Dec 2022 – Present
Full-Stack Tech Lead
Independent Contractor
Leading architecture and product development for a US fertility care platform connecting 10k+ patients with remote clinical care across US clinics.
Designed full system architecture from scratch — web + mobile — defining technical specs directly with CTO across a 3+ year engagement.
Introduced AI-assisted tooling and automated dev workflows, increasing team throughput by ~35% without adding headcount.
Shipped CI/CD pipelines that cut deployment cycle time from days to under 2 hours.
Led distributed 4-person frontend team across US/LATAM time zones — sprint planning, code reviews, delivery ownership.
Currently leading multi-tenancy migration and international phone number support rollout (Twilio geo-permissions, Canada launch).
React NativeReact.jsTypeScriptNode.jsPythonAuth0StripeTwilioFirebaseAWS
Securitize
San Francisco, CA
Apr 2022 – Nov 2022
React / React Native Sr. Full-Stack
Independent Contractor
Built and maintained web and mobile features for a digital securities platform tokenizing traditional financial instruments.
Developed new features across marketing site, web app, and mobile.
Integrated Framer CMS with React for marketing pages.
Released iOS and Android apps to stores and coordinated with US/Spain stakeholders.
React NativeReact.jsMERNFramer CMSCI/CD
Nifty Gateway
San Francisco, CA
Nov 2020 – Jun 2021
React Native Sr. Full-Stack
Independent Contractor
Developed cross-platform features for a leading NFT marketplace — Web, TV, and Mobile — within a fast-moving crypto/Web3 product team.
Built UI across web, TV, and mobile using React Native and ReNative.
Led code refactoring of React Native core and native modules.
Designed and shipped CI/CD pipelines for multi-platform releases.
React NativeReNativeWeb3CI/CD
Presence / Bluon / Foxbox
San Francisco · Chicago
Feb 2017 – Oct 2020
React Native Tech Lead
Independent Contractor
5+ years leading React Native development and mobile architecture across multiple US clients — from digital product agencies to B2B SaaS in HVAC and agriculture.
Designed Git Flow strategies and CI/CD pipelines for mobile app releases on 4+ products.
Released and maintained Android and iOS apps to stores across all projects.
Acted as tech lead, architecture owner, and client-facing point of contact for US stakeholders.
React NativeTypeScriptReduxFirebaseApp CenterJEST
What Clients & Teammates Say

The track record.

We have worked with DevLabs for over a year and a half, and we created a great product for fertility treatments — serving thousands of patients across the US. I truly recommend DevLabs for your projects. They have an amazing team!
JS
Joshua Sams
CTO · Sama Fertility — San Francisco, CA
As our React & React Native Tech Lead, Javi demonstrated exceptional technical expertise and leadership. Their enthusiasm for AI technologies consistently pushed our team to innovate. Javi would be a valuable asset to any forward-thinking tech organization.
FF
Fabian Firpo
Product Augmented Designer · Securitize
Javi is an expert at his craft. He's an incredible developer that also has great knowledge of design and overall product development. I am extremely thankful to have worked with him — and even more important, to call him a friend and advisor.
AP
Alex P.
CFO · REQUORDIT
Javier and I worked closely together building React Native mobile apps. He was extremely diligent, hard working, and delivered with high quality. He was a pleasure to work with. I highly recommend working with Javier!
JL
Jasmine Slivka
Product-focused Entrepreneur · Manager
Get in Touch

Let's build
something real.

Available for remote contracts with US and European clients. If you're building something with AI — or trying to figure out where to start — let's talk.

I typically respond within 24 hours.
✉ javi10823@gmail.com in LinkedIn GitHub ⊕ devlabs.dev