Gabriel Dienstmann Sieczkowski

Develop and maintain enterprise web applications using React and Ruby on Rails for a platform serving 14 million+ users across 30+ countries. Build and maintain Micro Frontend (MFE) applications, contributing to a modular and scalable frontend architecture. Led refactoring of legacy micro frontends to improve maintainability, scalability, and code organization. Implement new product initiatives requiring architectural changes across core business logic. Develop internal tools used by Product Owners to manage and track Jira tickets, improving engineering workflows and operational efficiency. Collaborate in Agile teams through planning, code reviews, and production releases.

Develop enterprise full-stack applications using React, Java Spring Boot, Python, and AWS. Build a customizable dashboard for managing and analyzing thousands of defect and support tickets. Implement scalable backend services across different system modules using Spring Boot and Python. Design REST APIs and responsive frontend interfaces integrated with cloud-native services. Build serverless solutions using AWS Lambda, API Gateway, and DynamoDB, with authentication via Amazon Cognito. Develop backend services using PostgreSQL for Java Spring Boot applications, covering the full lifecycle from requirements analysis to deployment.

Designed and developed institutional websites, landing pages, and web applications for large companies. Created responsive UIs using React and designed end-to-end user experiences in Figma. Managed the full development lifecycle as the company’s sole web developer, from design to deployment. Developed and customized WordPress solutions according to client requirements. Performed production deployments on Linux KVM environments using containerized applications. Worked directly with clients to turn business requirements into high-quality digital products.