Sergey Vertepov Email & Phone Number

Yerevan, Am

Moscow, Moscow City, Russia

- Developed and supported robust licensing services, significantly improving system reliability and enhancing user accessibility.- Developed and put into operation a well-done Golang framework for services that improved the work of the team and encouraged them to reuse the code.- Designed a CLI tool for expedited creation of endpoints and clients, which, in its turn, plausibly leads to better time with developers and thus coding errors are diminished manually. Applied linting and automated migration strategies in the CI/CD deployment pipeline, which resulted in less painful updates and quality code not simply met but easily handled.- I have done a very drastic refactoring, setting up memory and CPU aids to impair stress-laden system failure, resulting in the better improvement of the overall system performance, continued system optimization, and securing the data.- Managed release engineering processes, significantly enhancing deployment efficiency and reducing downtime during updates.- Directed the system design for key projects, optimizing core functionalities and boosting overall operational efficiency.- Designed and developed the 'OpenCase' feature, enabling customers to seamlessly open support tickets, thereby enhancing customer service responsiveness and operational transparency.- I built and used a monitoring scheme that was able to check all the necessary numbers like response time, error rates, and system performances with a minimum of burden and developed Grafana dashboards with such functionalities to monitor the system in real-time.

Moscow

- Curriculum Development and Instruction: Created a complete curriculum and held PHP programming instructions for beginners and intermediate students. Continuously kept the materials relative and motivation through bagging the recent realities and practices of industries.- Mentorship and Student Support: Coaching became the battle of skill and were easily handled through my one-on-one mentorship sessions, a win for the students as well as me meanwhile they enhanced their practical skills and understanding of PHP language.- Quality Assurance of Course Content: I frequently revised and refreshed course content and teaching methods to bring out the highest standards in education and to satisfy the learning expectations of the students.- Collaboration and Team Leadership: I was engaged in at least a month development project where we were working with the educators to enrich the learning of the students with practical examples.

Moscow

The CPA's (Cost Per Action) listing model's backend developer.Avito is the largest classified service in Europe and is the second-largest classified service in the world. Previously, there was only pay-to-list packages or single items. Besides the use of this CPA model, we defined user pays for a lead but not for a item.As a developer: - Developed CPA Listing Model: Led the setting up and implementation of the Cost Per Action (CPA) listing model that moved Avito one step ahead in the monetization route from charging per a sale item to a success-based approach. The rotation brought more customers on board and brought up the revenue by matching the success metrics with the customer costs.- Automatic Content Removal Architecture: Led the design and successful launch of an automatic content control system, which helped to preserve data reliability and keep customer loyalty intact, by addressing policy violations immediately, without the need for manual control.- Advanced Advertising Systems: Being part of the team that developed the advertising tools including the Advance Scheme, Target Actions, and Item Group Attribution, has also been a part. With these implementations, adverts targeting became more accurate and the information on campaign performance became better. This allowed advertisers to have a much better return on investment.- Quality Assurance through Unit Testing: Incorporated the injection of extremely dignified unit testing rules to ensure the integrity and robustness of the new features and systems in the entire development cycle. This process resulted in a significant drop in bug levels and a better release schedule.

Moscow

Testing systems development. - Took part of creation test's resource generation system (Resource Manager)- Helped with report viewer development- Automatization of 400+ e2e tests with selenium + phpunit and golang + gomock- Build configuration in teamcity- Developed strategy of how to test eventual consistency applicationTech stack:PHP, phpUnit, satis, composer, selenium, jsonwire grid, docker, docker-compose, a bit of JS, golang, go mock, testify, devtools protocol

Moscow

- Test Case Design and Execution: Designed and executed detailed test cases to ensure software functionality met all requirements.- Bug Tracking and Reporting: Efficiently tracked and reported bugs, collaborating with development teams to ensure timely resolutions.- Process Improvement: Contributed to continuous improvement initiatives, enhancing testing protocols and workflows.

Astrakhan

Web services development

Astrakhan, Russia

Implementation of organizational, technical and engineering measures to protect information in the organization.