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Mark Lezcano

Software Developer

CONTACT_MATRIX

EMAIL PHONE LINKEDIN

SYSTEM_OVERVIEW

> cat /profile/summary.txt

Software Engineer with 4+ years of experience in both corporate and startup environments. Skilled in delivering scalable, high-quality features with a strong product focus. Experienced in leading fast-paced product development under pressure and tight deadlines. Proficient in championing the use of AI-assisted development tools to improve team efficiency and task resolution.

TECH_STACK_RADAR

LANGUAGES & FRAMEWORKS

JavaScript

TypeScript

React

DATABASES

PostgreSQL

Sequelize

BigQuery

TESTING & DEV TOOLS

Jest

React Testing Library

Git

PRACTICES & METHODOLOGIES

CI/CD

TDD

Agile (Scrum, Kanban)

PERFORMANCE_METRICS

PROJECTS

POSITIONS

SKILLS

CERTS

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> ls -la /experience/

Software Developer

@Mercado Libre

> cat responsibilities.log

Developed scalable and maintainable interfaces for the Fulfillment business unit, supporting logistics operations across five Latin American countries.

Built a unified platform for sellers, centralizing key inventory and shipping functionalities, with personalized recommendations based on sales and stock data.

Implemented improvements in performance, usability, and architecture, aligning technical efforts with strategic business goals.

Actively collaborated with multiple teams to solve complex product and business challenges, prioritizing impact and code quality.

Contributed to the sustainability of the technical ecosystem through best development practices, key refactors, and a long-term scalability mindset.

Promoted the adoption of AI-powered development tools within the team, resulting in faster iteration cycles and an estimated 50 % increase in task and ticket resolution rate.

DURATION

2021 – PRESENT

Co-founder & CTO

@RevHouse

> cat responsibilities.log

Led the technical strategy of the company through its evolution from custom software development to staff augmentation and, eventually, AI-powered product design.

Oversaw the delivery of tailored solutions for non-technical companies, focusing on code quality, team efficiency, and meeting business-critical deadlines.

Coordinated technical onboarding and quality assurance for external development teams in high-turnover contexts.

Directed the development of internal tools and AI-based solutions, including a proprietary WhatsApp automation agent.

Built and mentored a multidisciplinary engineering team, fostering a culture of ownership, adaptability, and continuous improvement.

Selected as a Microsoft for Startups partner and participated in the Y Combinator Startup School program, reinforcing technical and strategic alignment with leading industry practices.

DURATION

2022 – 2024

Front End Development Tutor

@CoderHouse

> cat responsibilities.log

Provided live technical support during classes, assisting both instructors and students with course content and coding challenges.

Offered personalized guidance to approximately 20 students per cohort, helping them progress through the program and complete assignments.

Conducted supplementary classes to reinforce core concepts and ensure a deeper understanding of frontend development fundamentals.

Contributed to a collaborative learning environment by encouraging participation and supporting different learning styles.

DURATION

2021 – 2022

> ./skills --list-all

LANGUAGES & FRAMEWORKS

> cat languages & frameworks.txt

JavaScript

TypeScript

React

Next.js

Node.js

Express

DATABASES

> cat databases.txt

PostgreSQL

Sequelize

BigQuery

TESTING & DEV TOOLS

> cat testing & dev tools.txt

Jest

React Testing Library

Git

GitHub

GitLab

Bitbucket

PRACTICES & METHODOLOGIES

> cat practices & methodologies.txt

CI/CD

TDD

Agile (Scrum, Kanban)

CLOUD & INFRA

> cat cloud & infra.txt

AWS (basic)

Firebase (basic)

Supabase (basic)

AI TOOLS & WORKFLOW

> cat ai tools & workflow.txt

Prompt engineering

Cursor AI

GPT models

Claude

Grok

GitHub Copilot

> find /education -type f

Full Stack Web Development Bootcamp

Soy Henry

2020

GPA: N/A