Sergii Vdovareize

Inspera - Digital assessment solutions that empower educational institutions, professional organizations, and awarding bodies across the world. Cutting-edge ecosystem that ensures that assessments are ecient, eective, and accessible.

Achievements:

● Led the development of new features and improvements for assessment applications

● Led a frontend team of 5 engineers, mentoring new members and significantly reducing onboarding time

● Partly implemented advanced video and audio proctoring systems, which improved the integrity of assessments andreduced cheating incidents

● Increased test coverage by 300%, ensuring higher code quality and significantly reducing bugs in production

● Integrated visual testing tools, which led to 3 times decrease in visual bugs reported by users

● Executed automatic conversion of SVG images to various color themes, making the UI more accessible for people withvisual impairments, thereby enhancing inclusivity and user experience

● Upgraded accessibility features across the platform, achieving WCAG 2.1 AA compliance and expanding the user base

● Added comprehensive integration tests to ensure the presence of all expected API requests, significantly reducingclient complaints and improving system reliability

● Eciently developed and integrated additional functionalities based on individual client requests, continuouslyimproving client loyalty, which resulted in numerous contract renewals and long-term client relationships

● Improved secure browser functionalities, increasing satisfaction in institutions adopting the platform

One by AOL - Unified programmatic solution designed to help publishers maximize monetization across every format and channel. Provides a possibility to manage video content and ad flow, view analytics data, control promotion strategy.

Technologies: JavaScript, Java, Node.js, Jasmine, Nightwatch, MongoDB, Jenkins, Browserstack, SauceLabs, S3, Datadog

Achievements:

• Developed a high-performance HTML5 video player, leading in increase in user retention and improvement in video playback performance
• Boosted support for various video ad providers, which resulted in a 10% increase in ad revenue
• Implemented and optimized the continuous delivery flow, reducing deployment time and increasing releasefrequency
• Split the player into micro-components and services, resulting in reduction in maintenance time and a more modularcodebase
• Built and maintained the Player Version Manager service, achieving a 95% success rate in automatic version updatesand rollbacks which 10 times reduced the amount of issues on production and made it possible to deploy new versionsevery day
• Improved unit, UI, and mobile test coverage by 50%

Vidible - Video Advertising platform that gives tools for ad content management and video promotion. Provides a wide range of monitoring and analytics data. Bought and extended by Verizon Media.

Technologies: JavaScript, Java, Ruby, Gradle, Jasmine, Nightwatch, RSpec, JUnit, TestNG, MongoDB, Jenkins, Amazon S3

Achievements:

● Provided robust support for server-side services, ensuring high availability and reliability of video ad delivery

● Enhanced video player capabilities, as result contributed to improved customer satisfaction

● Created intuitive ad platform UI features that sped up the content creation and publishing

● Successfully onboarded 2 new video ad providers, diversifying revenue streams and expanding market reach

● Launched player version switcher, enhancing operational eciency

● Spearheaded the automation of deployment processes, resulting in 50% faster time-to-market