Anton Bartosz Email & Phone Number

- Spearheaded the development of diverse modules within the ERP system, encompassing crucial functionalities such as accounting, purchasing, inventory management, and sales.- Crafted a multitude of responsive web applications and pages, delivering seamless user experiences across various devices and screen sizes.

- Led development for a microservice-based advertising and digital assets management web app, using a mix of PHP, Node.js, and RabbitMQ to handle queues between services.- Developed frontend applications in React, in component-based architecture to make the codebase more maintainable and modular.- Built a scalable content delivery pipeline with Node.js and AWS Lambda, using S3 for storage and API Gateway for microservice communication.- Rebuilt a legacy Laravel-based system, refactoring and upgrading the codebase to PHP 8+ while ensuring compatibility with modern cloud architectures.- Optimized backend services written in Node.js, scaling them across multiple AWS EC2 instances behind an ELB, reducing downtime and improving performance.- Used AWS services like RDS (PostgreSQL), S3, ECS, and CloudFormation for building robust, cloud-native applications.- Created serverless functions using AWS Lambda to handle asynchronous tasks and event-driven processes, reducing operational overhead.- Contributed to internal chatbot development with Python, Anthropic and Stable Diffusion (for image processing).- Worked on browser extensions in JavaScript to enable cross-system integrations with legacy infrastructure.- Set up continuous integration and delivery pipelines using Github Action and Gitlab Pipelines, ensuring automated deployments across multiple environments.- Actively participated in code reviews, pair programming, and technical mentoring, focusing on leveling up junior developers in full-stack development.

- Worked on revenue management solutions for hotels, specifically focusing on managing display advertising and optimizing advertising bids using statistical models.- Built rapid prototypes using Airtable as backend to validate ideas quickly with integration to cloud storages.- Contributed to TypeScript, Node based full stack web development and deployed services on Google Cloud Platform with CircleCI for CI/CD.- Transitioned to a high-priority payments project, delivering scalable solutions for the company’s payment infrastructure and accounting.- Developed a company-wise UI design system using Vue, SCSS and Storybook for future development.- Gained experience with a wide range of technologies including C# , PHP, JavaScript, React, Vue, Angular, and various monitoring and logging tools like Graphite, DataDog, and Logstash.

- Contributed on a full-stack web development for a farm management solution focused on Ruby, JavaScript, Rails, Sinatra, and NodeJS.- Built a web-scraping and alerting system eCommerce pricing analysis using Python.- Developed an android mobile app for alert systems using Java and Firebase.- Used Gitflow for version control and source code management.