Feb 2023 – Aug 2024 · 1 yr 6 mos · Hamburg, Germany · On-site

• Highest level of an individual contributor and a role model for the whole department.
• Took charge of the overarching architecture and fostered the adoption of Event Sourcing with Apache Kafka.
• Led the development of a unified chat solution, emphasizing asynchronous, event-driven architecture.
• Introduced an API-first approach, authored guidelines, and spearheaded the exploration of messaging tools.
• Mentored junior developers and actively contributed to technical discussions and presentations.

Aug 2021 – Feb 2023 · 1 yr 6 mos · Hamburg, Germany · Hybrid

• Worked as part of a team responsible for integrations with 3rd parties, including Microsoft (Azure AD, Teams, Sharepoint) and Google (Workspace, Calendar).
• Contributed to the development of a future-proof platform, seamlessly integrating it with existing solutions through microservice and event-driven architectures.
• Introduced and promoted the API-first approach across the Software Engineering department, standardizing API development practices for improved efficiency and scalability.

Apr 2021 – Aug 2021 · 4 mos

• Provided expert guidance and mentorship to young developers, focusing on design, architecture, testing, CI/CD, and production operations.
• Played a key role in driving end-to-end responsibility and best practices adoption within the development process.

Nov 2019 – Aug 2021 · 1 yr 9 mos

• Spearheaded the rebuilding of a critical Telekom internal API from scratch, ensuring its suitability for frontend and mobile applications.
• Orchestrated a cross-functional effort involving 7 initial teams, which expanded to 14 within a year, underlining the project's central importance within Telekom.
• Pioneered API-first development methodologies, optimizing the API for seamless integration with frontend and mobile platforms while aligning with Telekom's strategic objectives.
• Implemented robust CI/CD pipelines using GitLab CI/CD, facilitating rapid and reliable software delivery to support Telekom's evolving digital ecosystem.
• Leveraged Kubernetes, Docker, Helm, and CI/CD practices to architect a scalable infrastructure capable of accommodating the project's growth and complexity.
• Championed event-driven design principles, including event sourcing and CQRS, to build resilient systems tailored to Telekom's dynamic requirements.
• Played a pivotal role as a tech lead, providing guidance, mentorship, and technical expertise to navigate project complexities and ensure successful outcomes.
• Recognized for contributions to project success through articles, presentations, and leadership within the telecommunications industry.

Mar 2018 – Jan 2020 · 1 yr 10 mos

• Led the development and maintenance of the internet portal https://telekom.de, overseeing the Shop and Customer Center functionalities in a project involving approximately 200 engineers.
• Utilized Oracle ATG as the primary framework/CMS, supplemented by Spring Framework modules for specific functionalities.
• Contributed to the frontend development using JSP and jQuery, with exposure to modern frontend technologies such as React, and TypeScript.
• Implemented microservices architecture as part of project modernization efforts, utilizing platforms like AppAlige (Openshift acquired by Telekom), Kubernetes, and Docker.
• Managed build processes using Gradle and deployed applications on JBoss web servers, with Oracle databases.
• Represented the company at the Joker Java conference in Saint-Petersburg, Russia, contributing to knowledge sharing and networking within the Java community.
• Served as Team Lead of squad of 10 engineers, providing leadership, guidance, and technical direction to ensure project success.

Sep 2011 – Mar 2018 · 6 yrs 6 mos · Saint-Peterburg, Russia

• Road From Junior to Senior here.
• Developing and maintaining solutions for multifunctional centers in Russia, based on a self-written custom framework, the main focus of which was to simplify interactions with DB through self-written custom ORM. Simplification of customization of business processes, information flow, security, service integrations, etc.
• The frontend part was done using JSP + self-written custom framework using jQuery.
• The solution contained not only CMS but also internet and intranet portals of different kinds, information, analytics, customer center, etc.
• This solution has been implemented in several Russian regions.
• Web-server: Tomcat
• Database: MS SQL Server

Apr 2011 – Sep 2011 · 5 mos

• Freelance on Ruby On Rails as part or small distributed team. Developing functionality for different internet portals, most of which are closed.

Aug 2010 – Apr 2011 · 8 mos

• Developing and maintaining trade market for shipping companies based on Bitrix CMS.
• PHP, JavaScript, SQL, HTML, CSS