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Jhonier Santana

Fullstack Software Developer

Jhonier Santana

About me

I'm a Software Developer with over 2 years of experience designing, architecting and building modern applications for web, mobile and desktop. I specialize in the JavaScript and TypeScript ecosystem, using React, React Native, Electron.js and Node.js to turn business requirements into functional, scalable, high-performance solutions.

I've taken part in the whole software lifecycle: from building applications from scratch, designing their frontend architecture and integrating REST APIs, to technology migration, user experience (UX/UI) optimization and testing.

Jhonier Santana

My route

Where the teams I've built with have been based, starting from my hometown.

SocorroBogotáMedellín
  1. Socorro

    My hometown

    Socorro, Santander. My hometown and the place I work from today.

  2. 2022 · Bogotá

    Holberton School

    Intensive software developer training, with fullstack projects in React, Flask and MySQL.

  3. 2023 · Medellín

    Autonomic Mind · Attendv / Betek

    Freelance work and my first frontend developer role: a web app built with React and Firebase.

  4. 2025 · Bogotá

    Seguridad Penta / Bartik

    Current role: building and evolving the frontend architecture of 4 SaaS applications, and implementing and improving UX/UI design across a suite of 5 web, mobile and desktop applications.

Achievements and impact

What I achieved in each role, figures first. Drag the wheel or tap a card to bring it to the front.

May 2025 – Present

Software Developer · Seguridad Penta / Bartik

4

SaaS apps from scratch

Design and build from scratch

Designed and implemented the frontend architecture of 4 SaaS applications, integrating REST APIs and building intuitive interfaces aligned with business goals.

1 of 8

My philosophy and professional growth

Throughout my career I've realized that in this industry there is something new to learn every day. Sometimes progress feels slow or a bit stagnant; yet, looking back at the road traveled, it's incredible to see how much has been built.

The support of my teammates, constant knowledge sharing and collaborative work have been key to strengthening my skills and adopting better practices: Clean Code, scalable architectures, testing and continuous delivery.

Along the way I've learned two lessons. Constantly pushing beyond the basics is what keeps me learning and adding real value to every project.

It can always be done better.
We should never settle for what we already know or practice.

Education

  • Frontend Development Certification

    Betek

    November 2024

  • Software Development Certification

    Holberton School

    July 2023

  • High School Diploma

    Instituto Técnico Industrial

    November 2020

Languages

  • SpanishNative
  • EnglishIntermediate