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Hi, I’m Oskar David Vanegas Juarez Navětrník, a junior full stack developer focused on building scalable web apps with React, Node.js, and MongoDB. I enjoy turning complex problems into clean, maintainable solutions and collaborating in agile teams to deliver value quickly. I’m excited by opportunities to integrate AI, optimize backend APIs, and streamline development workflows with CI/CD, Docker, Redis, and cloud services to improve user experiences and product outcomes.…Hi, I’m Oskar David Vanegas Juarez Navětrník, a junior full stack developer focused on building scalable web apps with React, Node.js, and MongoDB. I enjoy turning complex problems into clean, maintainable solutions and collaborating in agile teams to deliver value quickly. I’m excited by opportunities to integrate AI, optimize backend APIs, and streamline development workflows with CI/CD, Docker, Redis, and cloud services to improve user experiences and product outcomes.

Oskar David Vanegas Juarez Navětrník

Full Stack Developer, Web Developer, Front-End Developer, +3

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Hi, I’m Oskar David Vanegas Juarez Navětrník, a junior full stack developer focused on building scalable web apps with React, Node.js, and MongoDB. I enjoy turning complex problems into clean, maintainable solutions and collaborating in agile teams to deliver value quickly. I’m excited by opportunities to integrate AI, optimize backend APIs, and streamline development workflows with CI/CD, Docker, Redis, and cloud services to improve user experiences and product outcomes.…Hi, I’m Oskar David Vanegas Juarez Navětrník, a junior full stack developer focused on building scalable web apps with React, Node.js, and MongoDB. I enjoy turning complex problems into clean, maintainable solutions and collaborating in agile teams to deliver value quickly. I’m excited by opportunities to integrate AI, optimize backend APIs, and streamline development workflows with CI/CD, Docker, Redis, and cloud services to improve user experiences and product outcomes.

Available to hire

Hi, I’m Oskar David Vanegas Juarez Navětrník, a junior full stack developer focused on building scalable web apps with React, Node.js, and MongoDB. I enjoy turning complex problems into clean, maintainable solutions and collaborating in agile teams to deliver value quickly.

I’m excited by opportunities to integrate AI, optimize backend APIs, and streamline development workflows with CI/CD, Docker, Redis, and cloud services to improve user experiences and product outcomes.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

Spanish; Castilian

Fluent

English

Advanced

Czech

Fluent

Work Experience

Full Stack Developer at Independent Projects

August 1, 2023 - Present

Delivered 3 production-grade applications using Agile methodologies; reduced deployment time by 75% via CI/CD (GitHub Actions); conducted 50+ code reviews with a 98% merge success rate.

AI Assistant API Developer at Independent Projects

August 1, 2023 - Present

Built a Node.js/Express API integrating OpenAI GPT; optimized API response time by 30% using Redis caching and improved latency.

Crypto Mini Tracker / Real-Time Financial Dashboard at Independent Projects

August 1, 2023 - Present

Created a real-time dashboard using React, TypeScript, Tailwind CSS and CoinGecko API; implemented adaptive polling (100–500 ms intervals) to optimize data freshness and server load; achieved a notable reduction in data latency.

Physiotherapy Clinic Management System at Independent Projects

January 1, 2022 - Present

Engineered a RESTful API with Express.js and MongoDB; implemented JWT-based RBAC; frontend styled with Tailwind CSS; reduced administrative overhead in health care clinics by 30%.

Junior Full Stack Developer at Independent Projects

August 1, 2023 - Present

Developed 3 production-grade applications using React, TypeScript, Node.js, Express, and MongoDB; implemented RESTful APIs and JWT authentication; reduced deployment time by 75% via CI/CD with GitHub Actions; conducted 50+ code reviews with a 98% merge success rate; integrated AI features with the ChatGPT API and implemented multilingual support.

Junior Full-Stack Developer at Personal Project – Physiotherapy Clinic App

August 1, 2023 - Present

Developed end-to-end full-stack application to manage appointments, patients, and exercises for physiotherapy clinics; built RESTful API using Node.js, Express, and MongoDB; created React frontend with Tailwind CSS; implemented JWT authentication and role-based access control; designed reusable components and APIs; collaborated with stakeholders to iterate on features.

Junior Full Stack Developer at Independent Projects

August 1, 2023 - Present

Delivered 3 production-grade applications using Agile methodologies. Built RESTful APIs with Express.js and MongoDB. Implemented a JWT-based RBAC authentication system. Created a real-time dashboard and a Crypto Mini Tracker using React, TypeScript, and Tailwind CSS. Reduced deployment time by 75% via CI/CD with GitHub Actions. Conducted 50+ code reviews, achieving a 98% merge success rate. Implemented a Node.js proxy server with rate limiting and adaptive polling (100-500 ms intervals) to mitigate CORS issues and improve data refresh latency (target ~250 ms).

Junior Full Stack Developer at Independent Projects

January 1, 2023 - Present

Delivered 3 production-grade applications using Agile methodologies. Reduced deployment time by 75% via CI/CD with GitHub Actions. Conducted 50+ code reviews, maintaining a 98% merge success rate.