Juan Felipe Ortiz Lejarde
Building the future with AI.
Dual BBA + Data & Business Analytics at IE University (#2 of ~120) · Cornell exchange · I build real systems with AI, from a 330K-member platform migration to a multi-agent tool that won an award.
- members migrated
- 330K+
- of ~120 in class
- #2
- less time on commissions (manual tests)
- 80%
- hackathons
- 9+
Experience
Five roles, newest first. Open any role for the longer version.
- May 2026 – PresentMadrid
Software Developer & PM (AI-First)
CHEDAR
- 330K+ members on Monvanityideal (Blendly), a beauty platform I rebuilt and migrated on my own.
- ~30% of the CHEDAR app: one of the developers rewriting the production-accounting SaaS for film and media companies.
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Cross-functional developer and PM, building software for the group's different businesses. The CHEDAR app (budgets, purchasing and production accounting for film and media) is being rewritten by a small team on Hono, Postgres and Drizzle, self-hosted on Coolify. I'm also designing 'Hermes', an AI assistant for customer support and code.
- January 2026 – June 2026Madrid
Project Lead, Aegis Framework
GSK × IE University
- Best Patient Impact award at the Biopharma & AI Gateway.
- Multi-agent AI system for antimicrobial-resistance research; I led a 3-person team.
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Four specialist LLM agents (Pathogen, Host, Environment, Intervention) analyse structured tuberculosis cases, each running in parallel on OpenAI, Anthropic, Gemini and Ollama Cloud; GPT-4o merges their answers and keeps agreements, disagreements and open questions. Evidence comes from a live Europe PMC search plus uploaded files, and a pre-publish check blocks uncited claims. I wrote 102 of the 110 commits.
- August 2025 – May 2026Remote
Software Developer, Process Automation
Lejarde & Ortiz S.A.S., provider to Banco GNB Sudameris
- 20 h → 4 h in manual tests (80% less time): a platform I built solo to run the monthly commission cycle for the bank's loan advisors.
- 3 role portals (admin, coordinator, advisor) around an audited monthly cycle, signed PDFs and the bank's batch-payment file.
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Ingests the bank's Excel, matches each loan to its advisor and coordinator, calculates tiered commissions, generates signed Cuenta de Cobro PDFs and exports GNB's fixed-width batch-payment file. TypeScript, Hono, PostgreSQL and Docker; 118 of 118 commits are mine.
- November 2024 – July 2025Madrid
Data Analysis & Business Development Intern
IE University, Talents & Careers
- Full migration of students and staff to a new platform: cleaning, validation, and stakeholder coordination.
- CV dossiers for partner companies, increasing student hiring opportunities.
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Partnered with the Talents & Careers team to clean and migrate records from legacy spreadsheets into the new platform. Built CV dossiers that the careers advisors could share with hiring partners, broadening the roles students could apply to.
- November 2023 – September 2024Madrid
Junior Developer (Full Stack)
Brace Developers
- ~90% of bracedevelopers.com: built from architecture to launch on a React/TypeScript stack.
- SEO-friendly, analytics-ready site with fast load times, built in coordination with designers.
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Responsive React/TypeScript components on a shared component library, an SEO-friendly, analytics-ready structure, performance checks to cut load time, and day-to-day coordination with designers.
CHEDAR
GSK
Lejarde & Ortiz- IE University
Brace Developers
AI work
Four case studies first, then the smaller builds. Open a case study for the full story.
01 · Case studyAegis framework
Four specialist agents review a tuberculosis case on four model providers at once. I led the team.
Best Patient Impact GSK × IE award
TypeScriptNext.jsOpenAIAnthropic
02 · Case studyMonvanityideal migration
I rebuilt a French beauty community on my own at CHEDAR and moved it over without breaking its old URLs.
330K+ members moved to the new platform
Next.jsDockerCoolifyCloudflare
03 · Case studyBank commission platform
Built solo: the bank's monthly Excel goes in, signed payment requests and the batch-payment file come out.
20 h → 4 h in manual tests (80% less time)
TypeScriptHonoPostgreSQLDrizzle
04 · Case studyKlout drone digital twin
A live-ops digital twin of an emergency-drone fleet over Madrid, with anomaly alerts and A/B plan comparison.
Semifinalist HPE CDS Tech Challenge 2025–26
Next.jsTypeScriptLeafletZod- CHEDAR · 2026In progress
Hermes AI assistant
An AI assistant for customer support and engineering, grounded in the platform's own docs and code.
IBM Bob Hackathon · 2026Volea
Stock and sales app for street vendors, built in 48 hours with my team at the IBM Bob Hackathon.
Next.jsSupabasePlaywright
Cursor Hackathon, IE · 2026FORESIGHT
Simulates two business decisions side by side with LLM agents, so a small-business owner sees both paths first.
Top 10 of ~100 teams
Next.jsOpenAIMapboxVitest
Lejarde & Ortiz · 2024PDF generator
One form in, a ready-to-print onboarding contract out, for new sales advisors at our family business. Built solo.
Next.jsdocxpdf-lib
Side project · 2026WeightTrack
A small personal tracker for the Tanita BC-545N body-composition scale. Every reading stays in the browser.
Next.jsReactRecharts
How I use AI
The tools I actually use, grouped into four areas. Not a complete list.
AI & LLMs
- Multi-agent systems · AI architecture
- RAG · retrieval-augmented generation
- Evidence grounding · factual anchoring
- OpenAI / Anthropic / Gemini APIs · model providers
- Ollama · local model runner
- llama.cpp · local inference
- ComfyUI · image workflow tool
- AI dev workflows (BMAD) · agile AI-driven method
Data
- Python · programming language
- SQL · database queries
- R · statistical analysis
- Time-series forecasting · predictive modelling
- Data cleaning and migration · data prep
- Data visualisation · charts and dashboards
Engineering
- TypeScript / JavaScript · primary languages
- React · UI library
- Next.js · React framework
- Tailwind · CSS framework
- Postgres · database
- AWS S3 · object storage
- Docker · container runtime
- Linux / VPS · servers and shell
- GitHub Actions CI/CD · continuous integration
- Coolify · self-hosted PaaS
Business & product
- PM (AI-first) · AI-first product management
- Stakeholder coordination · cross-team work
- Programme design (AWS SMEs) · AWS enablement
- BBA training · business degree
- Public speaking (MUN chair) · Model UN chairing
AI & LLMs
The LLM tools I reach for first: agents, retrieval and local models for private work.
- Multi-agent systems · AI architecture
- RAG · retrieval-augmented generation
- Evidence grounding · factual anchoring
- OpenAI / Anthropic / Gemini APIs · model providers
- Ollama · local model runner
- llama.cpp · local inference
- ComfyUI · image workflow tool
- AI dev workflows (BMAD) · agile AI-driven method
This site was built with AI-assisted development (BMAD and large language models) and reviewed by me.
Education
My degree, my exchange at Cornell and Model UN.
- Expected July 2027
IE University dual degree
Business Administration + Data & Business Analytics
Madrid
GPA 9.37/10 · #2 of ~120 in class
Academic Excellence Scholarship · IEU fellow · Honours Program (top 5%)
- September 2025 – December 2025
Information Science
Cornell University
Ithaca, NY
- 2017 – present
Model United Nations
Delegate + Chair
- 8 conferences, incl. IEUMUN, focus on health and refugee issues
- Best Delegate · Best Position Paper (multiple awards)
More
Valedictorian: New Cambridge School, Floridablanca (Bucaramanga, Colombia), June 2021
Johns Hopkins Center for Talented Youth: recognition for academic achievement (2017)
Language stays: English in the UK (1 month, 2015) · French in France (3 months, 2021)
Mentoring: I mentored a first-year IE student and tutored university students privately (both 2023)
9+ hackathons and data competitions since 2020
Best Patient Impact
GSK × IE Biopharma & AI Gateway (Aegis)
Top 10 of ~100 teams
Cursor Hackathon
3rd place
NTT Hackathon (time-series forecasting)
3rd place
IE Sustainability Datathon (demand forecasting for Ryanair)
1st infographic · 2nd storytelling · 3rd analysis
A Viz to Remember
Best Delegate · Best Position Paper
Model United Nations (8 conferences incl. IEUMUN, Delegate + Chair, focus on health and refugee issues)
Secretary General
Green Teen Summit
Chair
Green Teen Summit
Beyond
the CV
Beyond work
The parts the CV leaves out.
Languages
Spanish (native) · English (C2) · French (intermediate)
Places in my story
- Bucaramanga
- UK
- France
- Madrid
- Ithaca
Model UN
2017 – present · 8 conferences · Best Delegate · Best Position Paper
Contact: Let's build what's next
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