Kirill Zakharov
@kirillzakharov
Technology leader and CTO/co-founder building high-impact teams and software.
GermanyWhat I'm looking for
I’m a technology leader who builds and scales high-performing teams and software solutions that drive business growth and positive change. I’ve learned that it’s not just about writing code—it’s about solving complex problems that impact people’s lives.
As CTO / Co-Founder, I’ve helped take companies from scratch and turn technical vision into business outcomes. At Renkka, I lead startup development and team leadership, and at Beau (YC S21) I’ve focused on building the engineering engine that supports growth.
Earlier, I built products and led delivery across backend platforms at ONDOC.ME, Skyeng, PropellerAds, and Aitarget. During COVID-19, my remote education work handled 1M+ users with 300k homework submissions per day—starting from less than 5k users.
I also value people-first engineering: I mentor developers, support technical recruiting, and create an environment where teams can deliver results. I bring a unique blend of technical expertise and business intuition—connecting engineering decisions directly to measurable outcomes.
Experience
Work history, roles, and key accomplishments
CTO / Co-Founder at Renkka focused on startup leadership and development.
CTO / Co-Founder at Beau, focusing on team management, technical recruiting, and startup development.
Lead Backend Developer at PropellerAds, providing mentoring and team leadership.
Skysmart (backend + teamlead, skysmart.ru): managed a small team and developed a high-available and performance oriented platform which helped few million of teachers and students to continue education process while schools in Russia were closed.
Also, interviewed and adapted new developers, took part in custdev, core team meetings and demo days.
Shared a team results with for other teams in compa
Developed a new version of facebook dashboard for e-commerce clients. Also, developed a few features such as weather ad targeting and features that allow our clients to create evergreen video ads.
PHP 7, Symfony 4, Docker, PostgreSQL, Redis, RabbitMQ
It helped me to try Project Manager role.
PHP, Symfony, Doctrine, PHPunit, Behat, GitHub Flow, Ansible, Vagrant
Technically I was the first official employee. As a result I took a part almost in each processes and projects we launched.
As a developer I made integrations of the few key partners such as Infoclinica (medical software for clinics) that resulted in contracts with the most valuable clinics in private health (with biggest in
CRM for local company call center, another small projects and scripts
Education
Degrees, certifications, and relevant coursework
Y Combinator
Alumni, S21
2021 - 2021
Saint Petersburg State University of Aerospace and Instrumentation
Engineer's degree, Information Technology
2009 - 2014
Availability
Location
GermanyAuthorized to work in
Job categories
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