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Hi, I’m Daniel Dimitarov Lee. I’m a results-driven Full-Stack Developer and AI Engineer with extensive experience designing and implementing innovative solutions across e-commerce, transportation, and enterprise software. I specialize in building scalable, high-performance applications that blend strong frontend experiences with robust backend systems and AI-driven insights. I enjoy turning ideas into real-time, data-driven solutions—creating responsive web apps, integrating AI/ML models, and delivering reliable CI/CD pipelines. I’m dedicated to continuous learning, collaborating with cross-functional teams, and improving user experience and operational efficiency through thoughtful engineering.…Hi, I’m Daniel Dimitarov Lee. I’m a results-driven Full-Stack Developer and AI Engineer with extensive experience designing and implementing innovative solutions across e-commerce, transportation, and enterprise software. I specialize in building scalable, high-performance applications that blend strong frontend experiences with robust backend systems and AI-driven insights. I enjoy turning ideas into real-time, data-driven solutions—creating responsive web apps, integrating AI/ML models, and delivering reliable CI/CD pipelines. I’m dedicated to continuous learning, collaborating with cross-functional teams, and improving user experience and operational efficiency through thoughtful engineering.

Daniel Dimitarov Lee

Full Stack Developer, AI Engineer, Front-End Developer, +3

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Hi, I’m Daniel Dimitarov Lee. I’m a results-driven Full-Stack Developer and AI Engineer with extensive experience designing and implementing innovative solutions across e-commerce, transportation, and enterprise software. I specialize in building scalable, high-performance applications that blend strong frontend experiences with robust backend systems and AI-driven insights. I enjoy turning ideas into real-time, data-driven solutions—creating responsive web apps, integrating AI/ML models, and delivering reliable CI/CD pipelines. I’m dedicated to continuous learning, collaborating with cross-functional teams, and improving user experience and operational efficiency through thoughtful engineering.…Hi, I’m Daniel Dimitarov Lee. I’m a results-driven Full-Stack Developer and AI Engineer with extensive experience designing and implementing innovative solutions across e-commerce, transportation, and enterprise software. I specialize in building scalable, high-performance applications that blend strong frontend experiences with robust backend systems and AI-driven insights. I enjoy turning ideas into real-time, data-driven solutions—creating responsive web apps, integrating AI/ML models, and delivering reliable CI/CD pipelines. I’m dedicated to continuous learning, collaborating with cross-functional teams, and improving user experience and operational efficiency through thoughtful engineering.

Available to hire

Hi, I’m Daniel Dimitarov Lee. I’m a results-driven Full-Stack Developer and AI Engineer with extensive experience designing and implementing innovative solutions across e-commerce, transportation, and enterprise software. I specialize in building scalable, high-performance applications that blend strong frontend experiences with robust backend systems and AI-driven insights.

I enjoy turning ideas into real-time, data-driven solutions—creating responsive web apps, integrating AI/ML models, and delivering reliable CI/CD pipelines. I’m dedicated to continuous learning, collaborating with cross-functional teams, and improving user experience and operational efficiency through thoughtful engineering.

Skills

Experience Level

Expert

Expert

Expert

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Expert

Expert

Expert

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Expert

Expert

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Expert

Expert

Expert

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Expert

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Full-Stack Developer at SmartCities Transport

August 1, 2025 - September 16, 2025

Developed and maintained the Fleet Management & Mobility Ecosystem platform, enabling real-time fleet tracking and optimization of public transit operations for transit agencies and passengers. Built responsive web applications for operators and passengers. Integrated AI/ML models for route optimization, service scheduling, and passenger demand prediction. Implemented Celery for asynchronous task processing to handle large-scale data processing and real-time predictions. Developed RESTful APIs for integration with third-party transit systems and data sources. Leveraged LLMs for data analysis and decision-support to enhance fleet management insights. Scaled the platform to support high-volume data across multiple cities.

Full-Stack Developer at SneakQik

December 1, 2022 - September 16, 2025

Joined as Frontend Developer, promoted to Full Stack Developer after 6 months. Built a fully custom online e-commerce platform with features like real-time inventory, cart management, product filtering, and order tracking. Developed secure RESTful APIs for user authentication, product catalogs, and orders, integrating with third-party payments and delivery services. Implemented LLM-based chatbots to improve customer support and user experience. Led frontend performance optimizations reducing page load times through lazy loading and responsive design. Contributed to automated tests and CI/CD processes for reliable deployments.

AI / Full Stack Developer at FASTDEV

April 1, 2019 - September 16, 2025

Collaborated with clients to gather requirements, proposed scalable architectures, and delivered full-stack applications across multiple sectors. Built web and mobile solutions using React, Node.js, PHP/Laravel, Python, Java/Spring, Kotlin, and cross-platform mobile frameworks. Developed backend services and RESTful APIs with secure authentication, data processing, and third-party integrations. Built cross-platform mobile apps with native performance. Implemented DevOps practices including CI/CD, Docker-based deployments, and automated testing for reliability. Participated in Agile teams and sprint planning.

Full-Stack Developer at SmartCities Transport

August 1, 2025 - September 16, 2025

Developed and maintained the Fleet Management & Mobility Ecosystem platform, enabling real-time fleet tracking and optimizing public transit operations for transit agencies and passengers. Built responsive web applications for operators and passengers. Integrated AI/ML models (Python) to improve route optimization, service scheduling, and passenger demand prediction. Implemented Celery for asynchronous task processing to handle large-scale data processes like real-time route predictions. Developed RESTful APIs for third-party integrations. Collaborated with cross-functional teams to optimize performance and usability. Leveraged LLMs for advanced data analysis and decision-making support, enhancing fleet management insights. Scaled the platform for high-volume data in a distributed system across multiple cities.

Full-Stack Developer at SneakQik

December 1, 2022 - September 16, 2025

Joined as a Frontend Developer, promoted to Full Stack Developer after 6 months. Built a fully custom online e-commerce platform (not template-based). Implemented real-time inventory, cart management, product filtering, and customer order tracking. Developed secure RESTful APIs for user authentication, product catalogs, and orders; integrated with third-party payments and delivery services. Applied LLM-based chatbots to improve customer support, reducing response time by 40%. Led frontend performance improvements, reducing page load times by 30% via code optimization and lazy loading. Wrote automated tests and contributed to CI/CD pipelines to ensure reliability.

AI/Full Stack Developer at FastDev

April 1, 2019 - September 16, 2025

Collaborated with clients to gather requirements, propose scalable architectures, and deliver custom full-stack applications. Designed and developed web and mobile solutions using React, Node.js, Express, PHP, Laravel, MongoDB, MySQL, PostgreSQL, Python (Django), Java (Spring Boot), Kotlin, Swift, Android, iOS, and React Native. Engineered backend services and RESTful APIs with secure authentication and data processing, integrating with third-party systems. Built cross-platform mobile apps with native performance. Applied DevOps practices including CI/CD, Git, and Dockerized environments. Ensured code quality with automated tests and performance profiling; worked in Agile teams to meet timelines.

Full-Stack Developer at SmartCitiesTransport

August 1, 2025 - September 16, 2025

Developed and maintained the Fleet Management & Mobility Ecosystem platform, enabling real-time fleet tracking and optimizing public transit operations for transit agencies and passengers. Built responsive web applications for operators and passengers. Integrated AI/ML models (using Python) to improve route optimization, service scheduling, and passenger demand prediction, enhancing operational efficiency. Implemented Celery for asynchronous task processing, enabling background job management for large scale data processing such as real time route predictions and data analysis. Developed RESTful APIs to enable seamless integration with third party transit systems and external data sources. Collaborated with cross functional teams to ensure a seamless user experience across passenger and transit operator platforms, optimizing performance and usability. Leveraged LLMs for advanced data analysis and decision making support. Scaled the platform to handle high volume data in a distributed s

Full-Stack Developer at SneakQik

December 1, 2022 - September 16, 2025

Joined as a Frontend Developer, promoted to Full-Stack Developer after 6 months based on performance and initiative. Helped build a fully custom online e-commerce platform from the ground up not based on templates. Implemented features such as real-time inventory display, cart management, product filtering, and customer order tracking. Developed secure RESTful APIs for user authentication, product catalogs, and order processing, integrating with third-party services for payments and delivery logistics. Applied LLM-based chatbots for improved customer support, reducing response time by 40% and increasing user satisfaction. Led frontend efforts on responsive design and performance tuning, reducing page load times by over 30%. Wrote automated tests and participated in CI/CD workflows to ensure deployment reliability and code quality.

AI/Full Stack Developer at FASTDEV

April 1, 2019 - September 16, 2025

Collaborated directly with clients to gather technical requirements, propose scalable architecture solutions, and deliver custom full-stack applications across diverse sectors. Designed and developed web and mobile solutions using a broad technology stack, including React, Node.js, PHP, Laravel, MongoDB, MySQL, PostgreSQL, Python (Django), Java (Spring Boot), Kotlin, Swift, Android, iOS, and React Native. Engineered backend services and RESTful APIs to support critical functionality, implementing secure authentication, data processing, and integration with third party systems. Built cross-platform mobile apps with native performance and intuitive user interfaces, leveraging Kotlin, Swift, and React Native. Applied DevOps practices including CI/CD pipelines, Git version control, and Dockerized environments to streamline development and deployment. Ensured high code quality and system reliability through unit testing, automated test suites, and performance profiling. Participated in Agil

Full-Stack Developer at SmartCitiesTransport

August 1, 2025 - September 16, 2025

Developed and maintained the Fleet Management & Mobility Ecosystem platform, enabling real-time fleet tracking and optimizing public transit operations for transit agencies and passengers. Built responsive web applications for operators and passengers. Integrated AI/ML models (Python) to improve route optimization, service scheduling, and passenger demand prediction. Implemented Celery for asynchronous task processing to handle large-scale data processes, such as real-time route predictions and data analysis. Developed RESTful APIs for seamless integration with third-party transit systems and external data sources. Collaborated with cross-functional teams to ensure seamless user experience across passenger and transit operator platforms. Leveraged LLMs for advanced data analysis and decision-making support, optimizing operational strategies and enhancing fleet management insights. Scaled the platform to handle high-volume data in a distributed system.

Full-Stack Developer at SneakQik

December 1, 2022 - September 16, 2025

Joined as a Frontend Developer, promoted to Full Stack Developer after 6 months based on performance and initiative. Helped build a fully custom online e-commerce platform from the ground up — not based on eCommerce templates like Shopify or Magento. Engineered features such as real-time inventory display, cart management, product filtering, and customer order tracking. Developed secure, RESTful APIs for user authentication, product catalogs, and order processing, integrating with third-party services for payments and delivery logistics. Applied LLM-based chatbots for improved customer support, reducing response time and increasing user satisfaction. Led frontend efforts on responsive design and performance tuning, reducing page load times by over 30% through code optimization and lazy loading. Wrote automated tests and participated in CI/CD workflows to ensure deployment reliability and code quality across the stack.

AI/Full Stack Developer at FASTDEV

April 1, 2019 - September 16, 2025

Collaborated directly with clients to gather technical requirements, propose scalable architecture solutions, and deliver custom full-stack applications across diverse sectors. Designed and developed web and mobile solutions using a broad technology stack, including React, Node.js, Express, PHP, Laravel, MongoDB, MySQL, PostgreSQL, Python (Django), Java (Spring Boot), Kotlin, Swift, Android, iOS, and React Native. Engineered backend services and RESTful APIs to support business-critical functionality, implementing secure authentication, data processing, and integration with third-party systems. Built cross-platform mobile apps with native performance and intuitive user interfaces, leveraging Kotlin, Swift, and React Native. Applied DevOps practices including CI/CD pipelines, Git version control, and Dockerized environments to streamline development and deployment workflows. Ensured high code quality and system reliability through unit testing, automated test suites, and performance pro

Full-Stack Developer at SmartCities Transport

August 1, 2025 - September 16, 2025

Developed and maintained the Fleet Management & Mobility Ecosystem platform, enabling real-time fleet tracking and optimizing public transit operations for transit agencies and passengers. Built responsive web applications for operators and passengers. Integrated AI/ML models (Python) to improve route optimization, service scheduling, and passenger demand prediction, boosting operational efficiency. Implemented Celery for asynchronous task processing to handle large data workflows like real-time route predictions. Developed RESTful APIs to enable seamless integration with third-party transit systems and external data sources. Collaborated with cross-functional teams to ensure a cohesive user experience, focusing on performance and usability. Leveraged LLMs for advanced data analysis and decision support, scaling the platform for distributed multi-city deployments.

Frontend Developer / Full-Stack Developer at SneakQik

December 1, 2022 - September 16, 2025

Joined as a Frontend Developer, promoted to Full Stack Developer after 6 months based on performance. Built a fully custom online e-commerce platform (not template-based). Implemented features such as real-time inventory display, cart management, product filtering, and customer order tracking. Developed secure RESTful APIs for user authentication, product catalogs, and order processing, integrating with third-party services for payments and delivery logistics. Applied LLM-based chatbots for improved customer support, reducing response times and increasing user satisfaction. Led frontend efforts on responsive design and performance tuning, reducing page load times by over 30% through code optimization and lazy loading. Wrote automated tests and participated in CI/CD workflows to ensure reliable deployments.

AI/Full Stack Developer at FastDev

April 1, 2019 - September 16, 2025

Collaborated directly with clients to gather technical requirements, propose scalable architecture solutions, and deliver custom full-stack applications across diverse sectors. Designed and developed web and mobile solutions using a broad technology stack, including React, Node.js, Express, PHP, Laravel, MongoDB, MySQL, PostgreSQL, Python (Django), Java (Spring Boot), Kotlin, Swift, Android, iOS, and React Native. Engineered backend services and RESTful APIs, securing authentication, data processing, and third-party integrations. Built cross-platform mobile apps with native performance using Kotlin, Swift, and React Native. Applied DevOps practices including CI/CD pipelines, Git, and Dockerized environments. Ensured high code quality through unit testing, automated test suites, and performance profiling. Participated in Agile teams with sprint planning, peer reviews, and continuous delivery to meet tight timelines.