• Developed a government procurement application that managed various procurement models and provided visual data representations, enhancing the understanding of government business processes• Streamlined business processes for a major construction company by designing and implementing an efficient system for resource management, enhancing operational efficiency and productivity.• Leading a small team of five in developing a specialized application for a banking institution, focused on providing a seamless and engaging user experience for holiday-related services.

I was engaged in the Google Nest Pro, a platform dedicated to offering expert guidance on Google Nest products, including Internet of Things (IoT), smart home solutions, safety and security devices. • Maintained and modernized legacy codebase to accommodate thousands of daily users.• Spearheaded the migration of the web application from Ruby on Rails version 3 to the latest version 7, concurrently updating the MySQL database. Enhancing scalability and achieving a 40% improvement in page load times.• Orchestrated the migration of the CI/CD process from TeamCity to Jenkins resulting in a 30% reduction in deployment time and a 35% increase in overall build success rate. • Resolved several security vulnerabilities, for example detected and prevented ransack data exfiltration in our app. Consequently fortifying its resilience and resulting in a 50% reduction in potential security risks.

Contributed to a unified SaaS solution encompassing security, monitoring, and tracking functionalities over a private cellular network and Internet of Things (IoT). It was a result of considerable teamwork and communication. My role encompassed the development of the front-end interface and web services.• Led the development of the Frontend and Web services, accounting for 60% of the application's functionality.• Established robust communication layers between multiple services, including GraphQL, WebSockets, gRPC, and Kafka, resulting in a 33% reduction in latency.• Designed event-driven system with capabilities to work both on the cloud and on private solutions. Leading to a 40% reduction in response time.• Collaborated effectively with a diverse, cross-functional team through streamlined communication and coordinated efforts.

Led the development of sophisticated, enterprise-grade management and tracking systems tailored for laboratories, research institutions, and analytical teams. These systems have been instrumental in streamlining operations, optimizing resource allocation, and facilitating data-driven decision-making processes within specialized research environments. • Successfully integrated 3 projects into 1, necessitating substantial enhancements in database architecture, record synchronization, logic flow, and API functionality, resulting in a 300% increase in overall system efficiency.• Implemented a usage tracking system to provide feedback for several departments: marketing, R&D, complaint and etc.• Revitalized the existing codebase, enhancing CI/CD pipelines and streamlining the overall development process, resulting in a 40% reduction in deployment time and a 30% reduction in post-deployment errors.

Contributed to the npm project, a widely utilized JavaScript package manager with millions of daily users. • Orchestrated the implementation of security and privacy protocols, aligning with GDPR standards• Demonstrated initiative by independently resolving a recurrent email notification issue, resulting in a 20% reduction in deployment process time.• Ensured the integration of microservices through integration and functional testing, reducing system integration issues by 40% and bolstering overall system stability.

Engaged in a large-scale enterprise no-to-low code orchestration project with a global team of 40-50 professionals.• Entrusted with enhancing the application's security profile. Conducted vulnerability assessments and implemented supplementary layers of security controls.• Successfully engineered and fortified 40 new functionalities while addressing over 100 bugs. This effort led to an 11% improvement in performance.• Strengthened the project's robustness by adding and refining over 100 test cases, effectively covering 20% of the overall functionality.• Actively collaborated with the entire cross-functional team to ensure the seamless and precise execution of tasks.• Engaged closely with a diverse, globally dispersed cross-functional team, spanning 30 countries, to guarantee the smooth and accurate completion of tasks.

Engaged with a prominent global accounting firm (bound by NDA) on a project characterized by intricate business logic and stringent time constraints.• Assumed the responsibility of delivering security reports and addressing vulnerabilities every two sprints (four weeks).• Facilitated seamless collaboration among a diverse team of 10 departments encompassing various roles, including accounting, finance analysts, r&d and managers.• Provided mentorship and guidance to a junior developer.

Engaged directly with Amazon as a client for the Amazon Prime project, focusing exclusively on UI development.• Engineered and implemented 17 UI functionalities, encompassing vital components such as authentication, modals, and static page generation, constituting 40% of the application's overall functionality. • Presented the 2 advanced development tools, Prettier and UglifyJS2, resulting in a double of development speed and project build efficiency.

Collaborated on 2 projects. Spearheaded the development of a finance application, collaborating closely with a team of six front-end developers. Acted as the primary front-end developer for a substantial duration, overseeing the creation of a time tracking application.• Orchestrated the overhaul of 2 major applications.• Implemented and redesigned UI that resulted in a 300% performance enhancement.• Earned expressions of gratitude from project managers and company stakeholders on multiple occasions.• Provided mentorship and leadership to 2 junior front-end developers, ensuring their professional growth and project efficiency.