Software Engineer · Full Stack

Valentín Lunaklick

I build product-focused web experiences with React, TypeScript and modern web technologies.

Buenos Aires, Argentina 🇦🇷

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About me

Product-minded engineering, grounded in execution.

I am Valentín, a Full Stack Software Engineer based in Buenos Aires. I work across frontend, backend and platform work where clarity, speed and maintainability matter.

My stack leans on React, TypeScript, Next.js, Express, Prisma, PostgreSQL and Go, but I care more about shipping the right thing than collecting frameworks.

Experience

Mercado Libre

Oct 2024 - Current

Software Engineer

Current Position

Software Engineer working on the core CRM platform within Mercado Libre's Customer Experience area.

Key Responsibilities:
  • Developing RFCs to propose alternative solutions and drive technical decisions
  • Leading implementation from design through production rollout
  • Building APIs with Go while evolving CRM platform architecture
  • Reviewing pull requests and driving engineering best practices
Technologies Used:
React TypeScript Go Code Review Architecture CRM

Software Developer

Oct 2024 - Mar 2026

Software Developer working on Mercado Libre's CRM platform within the Customer Experience area.

Key Responsibilities:
  • Building and maintaining product features with React and TypeScript
  • Working on microfrontend and API integrations for the CRM platform
  • Contributing to testability and maintainability improvements in the CRM codebase
  • Monitoring production behavior and resolving issues to improve reliability
  • Collaborating with product, UX and cross-functional teams to deliver roadmap initiatives
Technologies Used:
React TypeScript Node.js Express Microfrontends TDD

CryptoMate

Apr 2022 - Oct 2024

Junior Fullstack Developer

Jun 2022 - Oct 2024

Full Stack Developer responsible for developing and maintaining web applications.

Key Responsibilities:
  • Developed and maintained web applications using React, Next.js and TypeScript
  • Focused on improving performance, user experience and client satisfaction
  • Designed and maintained efficient APIs using Node.js and Express
  • Managed data through PostgreSQL and MongoDB databases
  • Implemented robust backend services for effective data management
  • Created responsive and performant frontend interfaces
Technologies Used:
React Next.js TypeScript Node.js Express PostgreSQL MongoDB

Backend Developer

Apr 2022 - Jun 2022

Backend Developer responsible for building and maintaining server-side logic and APIs.

Key Responsibilities:
  • Developed RESTful APIs using Node.js and Express
  • Integrated and managed PostgreSQL and MongoDB databases
  • Ensured application security and data protection
  • Collaborated with frontend developers to define API requirements
Technologies Used:
Node.js Express PostgreSQL MongoDB JavaScript

Selected work

Projects built to solve real product problems.

Split Group

Split Group is an application that helps you divide expenses among groups of friends in a simple way. With our application, you can easily and efficiently keep track of shared expenses and settle up with your friends. Start organizing your group expenses today!

Live Demo Source Code

Live in chat

The real-time chat application utilizes Next.js and Express for the frontend and backend, respectively. Additionally, a separate server was established to host the socket.io server, enabling real-time communication between the client and server. Users can seamlessly send and receive messages, providing an interactive communication experience.

Source Code

Littera

A social media platform was developed using Next.js, TailwindCSS, and Firebase. The platform offers various features such as content creation and sharing, user following, and profile viewing. The interface is fast, visually appealing, and user-friendly.

Live Demo Source Code

Moofy

An e-commerce platform developed for a fictional company named Moofy. The primary objective of this project was to enhance the UI/UX skills and to work on TypeScript. In addition, framer motion was incorporated to learn more about animations. The platform offers an engaging and visually appealing interface, providing a smooth and seamless shopping experience to the customers.

Live Demo Source Code

Contact

Open to product teams that care about craft and delivery.

If you want someone who can move between frontend execution, product thinking and reliable delivery, reach out.

v.lunaklick@gmail.com LinkedIn