Armando Jiménez

Carolina, Puerto Rico

Armando
Jiménez

AI engineer and independent app maker. Building LLM-powered agentic systems by day. Sixteen apps for positive mindset and everyday life, downloaded more than 400,000 times.

The apps

16 live · 2021 → today

On the web

Websites & SaaS

Believe In Yourself illustration: a woman with a butterfly resting on her hand

Believe In Yourself

Essays and guides on affirmations, meditation, and inner growth. The writing side of the apps.

believeinyourself.me

About

Sobre mí

I build AI systems end to end: agentic workflows, RAG pipelines, and the evaluation frameworks that keep them honest. Underneath that sits a decade of full-stack engineering across mobile, frontend, and backend, so the AI ships inside real products. I take full ownership of what I build, from technical analysis and design through implementation, testing, and release.

The apps above are the side of the work I care about most: small, careful products for self-growth and everyday life, designed, built, published, and maintained by one person. What drives me is clarity and ownership. I want software that performs reliably under real-world demand, and to get a little better at the craft every day.

Experience

2017 → today

  1. Jun 2026 – present

    BOLD

    Senior Applied AI Engineer · AI Technology team

    • Building an LLM-powered automation framework of agentic workflows that reason, plan, and adapt to solve real-world career challenges.
    • Designing RAG and memory-augmented architectures, plus the evaluation frameworks that keep AI-driven products accurate and safe.
    • Working in TypeScript at the intersection of software engineering and applied AI, on a global cross-functional team.

  2. Feb 2022 – Jun 2026

    Nave Bank

    Software Engineer → Senior Software Engineer · founding team

    • Founding member of the engineering team behind the first digital bank of Puerto Rico, contributing research, groundwork, and engineering standards from day one.
    • Led analysis, design, and implementation of the Nave mobile app in Flutter, and owned end-to-end frontend delivery for the banking and payments platforms in Next.js and TypeScript.
    • Owned the design and automation of SFTP and payment workflows, including ACH and wires, for secure data exchange and reliable day-to-day operations.

  3. Jun 2017 – Jan 2022

    Evertec

    Engineer → Senior Engineer

    • Led development of the Mi Banco Android and iOS apps and contributed to the Popular Bank web platform.
    • Designed and integrated new digital-payment modules, including the ATH Mobile Donation feature.
    • Built and maintained full-stack banking systems with Java, Spring Boot, and SQL, and shipped native and cross-platform features in Flutter, Kotlin, Swift, and Objective-C.

Skills

Herramientas

AI engineering
LLMs · Agentic workflows · RAG · Prompt engineering · Embeddings & vector databases · LangChain / LangGraph · Model evaluation
Mobile
Flutter · Dart · Kotlin · Swift · Objective-C
Frontend
TypeScript · JavaScript · React · Next.js · Vue.js · Tailwind CSS · HTML · CSS
Backend
Java · Spring Boot · Node.js · NestJS · PostgreSQL · MySQL · REST APIs · AWS · Docker
Practices
System design · IAM · CI/CD · GitHub Actions · Automated testing · Agile (Scrum)

Education

Formación

  1. 2018

    National University College

    B.S. in Network Administration & App Development

  2. 2010 – present

    Self-taught, continuously

    Udemy, Coursera, and whatever ships next. Always learning the tools before they're required.

  3. Certifications

    AWS Certified Cloud Practitioner · Microsoft Azure Fundamentals · CompTIA Secure Infrastructure Specialist · Network+ · Security+ · A+

Off screen

La isla

Gym and running, gaming, series with the family, and long walks around the island. More than one of the apps above started as a thought on one of those walks.

Contact

Escríbeme

Have a project in mind, a question about an app, or just want to say hello? I usually reply within a day.

hello@armandojimenez.dev

GitHub LinkedIn