Javier Sarmiento
AI Engineer & Software Developer.
3+ years building, deploying, and securing production systems, now deepening into AI and applied security through a scholarship-funded Master's in Computer Security Engineering and Artificial Intelligence.
About
I'm an AI engineer and software developer with over three years of experience building, deploying, and securing production systems, currently completing a scholarship-funded Master's in Computer Security Engineering and Artificial Intelligence.
I combine solid full-stack and backend engineering with hands-on machine learning work, LLM-based agents, NLP, and clustering models, shaped by a security-first mindset from academic and professional cybersecurity experience.
I use modern AI tools daily, Claude, Gemini, Cursor, LangChain, to move faster and think clearer, and I'm comfortable owning a problem end to end, from prototype to production.
Currently exploring
- LLM-based agents and emerging protocols like MCP and A2A
- Applied cybersecurity, from a builder's side of the fence
- Investment strategy
- Chess, when there's time for it
Education
Universitat Rovira i Virgili
2025 to 2026
Tarragona, ES · Scholarship
Master's Degree in Computer Security Engineering and Artificial Intelligence
Universidad Católica de Colombia
2017 to 2022
Colombia
Bachelor in Computer Science
Platzi Master
Remote
Intensive elite program, top 0.1% of students
1:1 training with industry coaches, plus a four-month data engineering project. Strengthened cloud, data manipulation, and software engineering skills.
Experience
Software Engineer
Wazoku
May 2023 to May 2025 · 2 yrs
Remote
Contributed across multiple cross-functional teams to evolve and scale an enterprise SaaS platform.
- AI team
- Built frontend and backend for an AI-powered agent, extending user interaction through automation.
- Frontend modernization
- Migrated a critical legacy module from AngularJS to modern Angular, improving maintainability.
- Survey feature redesign
- Led a high-impact product enhancement, reworking the survey feature with the product team.
- New homepage initiative
- Provided backend support for a new homepage experience: performant APIs and reusable services.
- Analytics team
- Supported backend and infrastructure for data-driven insights and client reporting.
Full-Stack Developer
Datarte.art
Feb 2021 to Aug 2022 · 1 yr 6 mos
Remote
Built and maintained full-stack web applications end to end, from infrastructure to interface.
- Web applications
- Built two full-stack apps, Datarte and OtrasManeras, for artist artwork management using React, Gatsby, WordPress, and Flask.
- Cloud infrastructure
- Deployed and managed AWS services (EC2, RDS, S3) for UK clients CityRelay and CityRelaySolutions.
- Data and automation
- Built scrapers, migration tooling, and dashboards using Python, SQL, and Metabase.
- Testing and quality
- Implemented testing with Cypress, Pytest, and Selenium, and helped establish best practices.
Research Collaborator
Catholic University of Colombia
Apr 2020 to Nov 2020 · 8 mos
Colombia · Remote
Researched wearable SDKs and built prototypes to collect physiological signal data in real time.
- Fitbit SDK research
- Built a full smartwatch app streaming heart rate and calorie data to a web-socket server on Heroku.
- Academic collaboration
- Worked with three professors and a student team, supporting research with Complutense University of Madrid.