Daniel Martinez
Summary
I’ve spent the last 9+ years as a Full Stack Developer, working across five diverse software companies and building everything from APIs to polished user interfaces. My experience spans a wide range of technologies, including React, Node.js, and Python, and I’m always focused on creating reliable, scalable solutions. I enjoy collaborating with teams, solving complex problems, and staying ahead of industry trends to deliver the best possible results. Ultimately, I’m driven by the satisfaction of seeing users benefit from the applications I help create.
Overview
11
11
years of professional experience
Work History
Senior Full Stack Web Developer
Liberty Technologies
09.2023 - Current
- At Liberty Technologies, I played a critical role in building robust and scalable web applications using React, Node.js, and MongoDB, helping to enhance overall system performance by 30%.
- I drove the development of high-quality APIs, optimizing data flows between frontend and backend systems, which improved processing efficiency by 20%.
- By shifting the architecture to microservices with Docker and Node.js, I empowered the team to scale effortlessly and support a 40% increase in platform traffic.
- I led the migration of legacy infrastructure to AWS, utilizing EC2, S3, and RDS to reduce costs by 15% and significantly enhance the system’s reliability.
- I implemented automated testing with Jest and Cypress, increasing our test coverage to 85%, which contributed to a 25% reduction in production issues.
- Collaborating with product and design teams, I ensured seamless feature rollouts, cutting the time to deliver key updates by 20%.
- Optimizing MongoDB queries and indexing resulted in a 25% improvement in data retrieval times, enhancing user experience in high-traffic applications.
- I introduced serverless solutions using AWS Lambda, enabling more cost-effective infrastructure management while reducing overhead by 22%.
- As a senior developer, I mentored junior team members, helping to streamline onboarding processes and boosting the team's productivity by 20%.
- I helped implement a security-first approach, strengthening the application’s defenses and ensuring compliance with best practices for data protection.
Front End Developer
Blumshapiro Accounting, Tax And Business Consulting
02.2020 - 07.2023
- As a Frontend Developer at Blumshapiro, I built and maintained responsive web applications using React, TypeScript, and CSS frameworks, improving user engagement by 25%.
- Worked alongside the UX/UI team to implement design systems with Tailwind CSS and SCSS, creating a more consistent and user-friendly interface across multiple platforms.
- Reduced application load times by 40% by optimizing assets, leveraging lazy loading, and improving image compression techniques.
- Led the transition from jQuery to React, which streamlined the codebase, resulting in a 30% faster deployment time and better scalability for new features.
- Integrated external APIs, including payment gateways and social media feeds, which expanded functionality and improved user interaction by 20%.
- Developed custom reusable components, cutting down feature development time by 25% and ensuring a uniform look and feel across the application.
- Implemented automated testing with Jest and Cypress, achieving over 80% test coverage and reducing post-release bugs by 40%.
- Collaborated with backend developers to connect the frontend with RESTful APIs, improving data flow efficiency and reducing load times by 20%.
- Utilized AWS services like S3 for media storage and Lambda for serverless functions, reducing infrastructure costs by 15% and improving the reliability of the app.
Backend Developer
MongoDB
07.2018 - 12.2019
- As a Backend Developer at MongoDB, I built and optimized APIs using Python, Go, and Node.js, improving application performance by 30% and supporting millions of daily active users.
- Designed and implemented efficient database solutions using MongoDB, cutting data query times by 40% and enhancing the platform’s ability to handle large volumes of real-time data.
- Migrated legacy systems to MongoDB, which improved the system’s ability to scale and increased data handling capacity by 50%, leading to better overall system performance.
- Worked on building scalable microservices with Express and Flask, reducing development time for new features by 25% and improving platform flexibility.
- Utilized AWS services like EC2, S3, and Lambda to deploy and monitor backend applications, cutting operational costs by 20% while maintaining high availability and reliability.
- Implemented unit and integration testing with Jest, JUnit, and Pytest, boosting test coverage to 90% and decreasing critical bugs in production by 35%.
- Developed data processing pipelines and optimized backend workflows, reducing batch processing times by 40% and streamlining data storage and retrieval processes.
- Collaborated with cross-functional teams to implement features that enhanced user experience, improving backend efficiency and reducing the response time of key operations by 25%.
- Led efforts to ensure database security and compliance with industry standards, preventing data breaches and ensuring 100% adherence to internal security protocols.
Full Stack Developer
Meta
04.2016 - 04.2018
- At Meta, I was responsible for building and optimizing web applications with React and Node.js, which led to a 21% increase in user engagement thanks to faster, more responsive interfaces.
- I contributed to the development of a major feature that boosted daily active users by 30% and helped reduce churn by 24%, strengthening user retention.
- Focused on performance optimization, I improved SQL query efficiency in MySQL and PostgreSQL, reducing data retrieval times by 35% and enhancing the overall speed of the platform.
- Implemented unit testing with Jest, which helped increase test coverage by 67% and contributed to a significant drop in critical bugs making it to production.
- Developed and integrated RESTful APIs and third-party services, streamlining workflows and reducing system downtime by 13%.
- I utilized AWS tools like EC2, S3, and Lambda to deploy and maintain our backend services, cutting infrastructure costs by 26% and ensuring 99.9% uptime.
Software Developer
Red Planet Media
03.2014 - 01.2016
- Developed and maintained web applications using PHP, MySQL, and JavaScript, improving system performance and reducing page load times by 22%.
- Created and optimized SQL queries for the backend, reducing database response time by 29%, which directly improved user experience during peak traffic.
- Implemented an automated testing framework using Selenium, reducing manual testing time by 32% and improving the overall quality assurance process.
- Designed and deployed a secure user authentication system, ensuring that all user data was encrypted and meeting industry standards for data protection.
- Led the migration of legacy systems to a more modern stack, resulting in a 27% reduction in maintenance costs and an increase in system reliability.
Education
Bachelor of Science - Computer Engineering
University of Ottawa
Ontario, CA12-2013
Skills
Soft Skills
- Communication Skills
- Problem-Solving Ability
- Time Management
- Adaptability
- Teamwork
- Emotional Intelligence
- Leadership
- Curiosity and Continuous Learning
Hard Skills
- HTML5
- CSS
- Bootstrap
- jQuery
- JavaScript
- TypeScript
- ES6
- React
- Angular
- Tailwind CSS
- SCSS/SASS
- Nodejs
- Python
- PHP
- Go
- C#
- Express
- Nest
- Django
- Flask
- Laravel
- ASPNET
- MySQL
- PostgreSQL
- MongoDB
- EC2
- S3
- RDS
- Lambda
- E2E
- Azure
- Jest
- JUnit
- Pytest
- Selenium
- Cypress
- Playwright
- E2E Test
Timeline
Senior Full Stack Web Developer
Liberty Technologies
09.2023 - Current
Front End Developer
Blumshapiro Accounting, Tax And Business Consulting
02.2020 - 07.2023
Backend Developer
MongoDB
07.2018 - 12.2019
Full Stack Developer
Meta
04.2016 - 04.2018
Software Developer
Red Planet Media
03.2014 - 01.2016
Bachelor of Science - Computer Engineering
University of Ottawa
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