Alexander Onishchenko Email & Phone Number

Ljubljana, Si

Budapest, Hungary

Contributed to the success of a MedTech project, by leading E2E test automation process and working on feature delivery for a React Native mobile app.Notable contributions and activities:• Defined and implemented a set of tools and practices on top of Appium framework, allowing engineers to write new tests with more confidence and efficiency.• Actively collaborated with DevOps engineers and third-party vendor staff (BrowserStack) in order to create an automated pipeline for… Show more Contributed to the success of a MedTech project, by leading E2E test automation process and working on feature delivery for a React Native mobile app.Notable contributions and activities:• Defined and implemented a set of tools and practices on top of Appium framework, allowing engineers to write new tests with more confidence and efficiency.• Actively collaborated with DevOps engineers and third-party vendor staff (BrowserStack) in order to create an automated pipeline for running E2E tests and generating reports based on outputs.• Provided guidance and shared best practices with other engineers (both internal and client teams), fostering personal and collective responsibility for quality of work.• Actively participated in feature ideation and implementation. For less-defined features, implemented quick proof-of-concept solutions, clearing the requirements and creating a reliable action plan with predictable outcomes, allowing the team to progress on tasks with more confidence. Show less

Yekaterinburg, Sverdlovsk, Russia

Led the development of a distributed medical platform, aimed to deliver a variety of services covering the full lifecycle of medical prescriptions in a digital format.Notable contributions and activities:• Led a team of 5 developers, designing and implementing over 40 highly scalable core services for a distributed medical SaaS system, providing mission-critical APIs for dozens of external systems across 15 regions of Russia.• Created a culture of meaningful code-reviews… Show more Led the development of a distributed medical platform, aimed to deliver a variety of services covering the full lifecycle of medical prescriptions in a digital format.Notable contributions and activities:• Led a team of 5 developers, designing and implementing over 40 highly scalable core services for a distributed medical SaaS system, providing mission-critical APIs for dozens of external systems across 15 regions of Russia.• Created a culture of meaningful code-reviews, providing feedback and mentorship to more junior developers.• Collaborated with product-owners, identifying, prioritizing and delivering features with the most impact on end-user experience.• Applied principles of agile development by leading daily scrum meetings, decomposing and distributing tasks, as well as participating in feature scoring, backlog grooming and release planning.• Introduced Git Flow methodology within the team, greatly improving control over software releases.• Provided technical design and documentation for the system, creating a reliable knowledge base and ensuring the whole team has a clear vision of the system architecture.• Designed and implemented robust external REST APIs for integrations with partners with a strong emphasis on backward compatibility when introducing API changes.• Led the introduction of .NET and C# into the team tech stack, implementing reliable services and APIs, and sharing knowledge and best practices within the team. Show less

Yekaterinburg, Sverdlovsk, Russia

Designed and developed core functionality and features of a SaaS medical platform, providing a variety of medical services, with an emphasis on online communication between patients and doctors via video/audio calls and chatting.Notable contributions and activities:• Spearheaded the adoption of microservice architecture within the team, creating a foundation for a highly reliable and maintainable distributed system.• Led a team of 5 developers, designing and engineering over 30… Show more Designed and developed core functionality and features of a SaaS medical platform, providing a variety of medical services, with an emphasis on online communication between patients and doctors via video/audio calls and chatting.Notable contributions and activities:• Spearheaded the adoption of microservice architecture within the team, creating a foundation for a highly reliable and maintainable distributed system.• Led a team of 5 developers, designing and engineering over 30 core microservices, resulting in a distributed system, currently used by hundreds of thousands users across 8 regions of Russia.• Created an internal library of over 40 well-documented React components using TypeScript, resulting in a consistent UX/UI and developer experience across 3 web-applications.• Developed and maintained responsive and mobile-friendly cross-browser applications with cross-browser support using React, Redux, Socket.IO, HTML and CSS.• Actively collaborated with managers and analysts in search of most efficient ways to implement and test business hypotheses', saving time and development resources when collecting business insights.• Provided thorough task description for fellow developers, distributing workload and playing to each team member's strengths.• Initiated research and successfully implemented an integration with open-source video-conference software, providing an alternative to previously used costly proprietary software, allowing for more flexibility when facing customer requirements.-----Designed and developed a platform for a client company to track and monitor expensive software licenses and the efficiency of their usage by employees.Notable contributions and activities:• Developed services in C#, utilizing low-level system APIs to extract accurate hardware and software usage metrics.• Designed MS SQL schemas, views and procedures, optimizing storage and processing of large volumes of raw monitoring data. Show less

Yekaterinburg, Sverdlovsk, Russia

Developed frontend and backend features for a SaaS product focused on task management and real-time team communication.Notable contributions and activities:• Migrated and refactored legacy codebase from Java and PostgreSQL to a MERN stack, significantly improving performance and maintainability of application.• Created an expertise of HTML and CSS within the team, increasing web markup speed, quality, and overall maintainability of codebase.• Developed and maintained… Show more Developed frontend and backend features for a SaaS product focused on task management and real-time team communication.Notable contributions and activities:• Migrated and refactored legacy codebase from Java and PostgreSQL to a MERN stack, significantly improving performance and maintainability of application.• Created an expertise of HTML and CSS within the team, increasing web markup speed, quality, and overall maintainability of codebase.• Developed and maintained responsive cross-browser web client using React, Redux, Socket.IO, HTML and CSS.• Developed backend services and REST APIs using Node.js, Express.js, MongoDB and Docker.• Closely collaborated with product-owner and analysts in an effort to deliver top priority features in time without sacrificing code quality.• Collaborated with DevOps team, assisting in the configuration of CI/CD pipelines, consisting of GitLab CI/CD, Jenkins, SonarQube and Docker. Show less

Yekaterinburg, Sverdlovsk, Russia

Developed and maintained an enterprise bus solution for a regional bank, based on IBM Integration Bus, IBM MQ and Oracle DB.Notable contributions and activities:• Provided thorough technical support with Redmine Helpdesk on levels 1-3, resolving business-critical issues in a timely manner.• Collaborated with the QA team to build an automated test suite using Java, reducing the amount of errors reported by a client by ~70%.• Refactored legacy codebase, resolving multiple… Show more Developed and maintained an enterprise bus solution for a regional bank, based on IBM Integration Bus, IBM MQ and Oracle DB.Notable contributions and activities:• Provided thorough technical support with Redmine Helpdesk on levels 1-3, resolving business-critical issues in a timely manner.• Collaborated with the QA team to build an automated test suite using Java, reducing the amount of errors reported by a client by ~70%.• Refactored legacy codebase, resolving multiple legacy issues at the core and creating a solid foundation for further system development.• Assisted in resolving critical system failures, provided on-premise upgrade and configuration support.• Improved and extended system logging mechanisms, significantly improving the process of issue identification and resolution.• Identified and fixed performance bottlenecks and performed overall system optimization, more than doubling transaction throughput. Show less