Fabio Palacios

Senior Full Stack Developer

Hands-on Technical Lead with over 16 years of experience in software design, development, and architecture. Proven record leading teams and delivering high-performance, large-scale web applications serving millions of users. Strong expertise in Java, Scala, JavaScript (React, Redux), Typescript, Node.js, and Astro.

Technical Stack

Frontend

  • • React / Next.js
  • • TypeScript
  • • SSR ( Server Side Rendering)
  • • Tailwind CSS
  • • Redux / Zustand
  • • Astro
  • • Jest / Enzyme

Backend

  • • Java / Scala
  • • Spring
  • • Play
  • • Akka
  • • JPA/Hibernate
  • • Maven
  • • Kafka

AI & Big Data

  • • LLMs (GPT-4, Llama 3)
  • • RAG
  • • Semantic Memory
  • • Apache Spark

Infrastructure

  • • AWS / GCP / Azure
  • • Docker / Kubernetes
  • • CI/CD Pipelines
  • • Terraform

Observability

  • • ELK Stack
  • • Grafana
  • • Prometheus
  • • Sentry

Databases

  • • PostgreSQL
  • • MySQL
  • • MongoDB
  • • Oracle

Work Experience

Aylo (formerly Mindgeek) | Technical Lead | Montreal, Canada

May 2021 – Present

• Orchestrated the delivery of a multi-modal AI companion platform, guiding the fusion of LLMs (GPT-4/Llama 3) with RAG-based semantic memory to deliver high-context, consistent character personas.

• Architected and led the migration of a monolithic React SPA to a micro-services-based SSR Astro architecture, enabling parallel development across multiple teams.

• Optimized web performance, increasing Google Lighthouse scores from 15% to 90% through Server-Side Rendering (SSR) and modern architectural patterns.

• Lead a team of 5 developers in delivering high-traffic web features used by over 10 million users monthly.

• Oversaw release planning and code reviews, reducing production deployment issues by 30%

• Mentored engineering staff and promoted high-quality standards for React and Node.js development.

Mindgeek | Senior Full-Stack Developer | Montreal, Canada

Jan 2018 – Apr 2021

• Developed Server-Side Rendered (SSR) React platforms to handle massive concurrent traffic while maintaining SEO and performance.

• Architected a comprehensive testing framework using Jest and Enzyme, increasing unit test coverage from baseline to 90%.

• Scaled engineering best practices by training 20+ developers on frontend testing and performance optimization.

Qomplx Inc. | Senior Software Engineer / Scala Developer | Virginia, USA (Project Based)

May 2016 – Jan 2019

• Designed and implemented REST APIs for AI-driven stock prediction platforms using Scala, Akka, and Play.

• Developed backend modules to process real-time Apache Spark models, enabling low-latency data visualization for end-users.

• Built custom AWS data collectors to streamline instance data processing and ingestion pipelines.

• Integrated full-stack solutions leveraging Scala, Liftweb, and JavaScript.

Avaya | Senior Software Engineer | Buenos Aires, Argentina

May 2012 – Jan 2018

• Designed and implemented web administration tools for call flow management.

• Developed ELK-based reporting and BI applications for analytics.

• Designed Scala-based microservices to replace legacy monolithic structures, improving modularity and deployment speed.

Gemalto | Senior Software Developer | Buenos Aires, Argentina

Jan 2009 – May 2012

• Delivered secure, scalable banking transaction web applications across Latam markets.

• Mentored a team of 3, conducted technical workshops, and drove knowledge transfer.

• Developed reusable components, web services, and mobile banking features in Java/Spring.

• Enhanced system performance and promoted agile development practices.

Capgemini | Software Developer | Buenos Aires, Argentina

Sep 2008 – Dec 2008

• Revamped banking web platform for balance sheet reporting and contact management.

• Developed Java/Struts modules, optimized performance, and ensured high-quality delivery.

Snoop Consulting | Java Developer | Buenos Aires, Argentina

Feb 2007 – Sep 2008

• Built Java web applications for Nextel call center operations and MasterCard billing systems.

• Implemented batch processes for large-scale data migration and optimized application performance.