Sergey Gordeev
Results-driven entrepreneur and technical leader with a strong background in aerospace engineering and a proven track record of successfully founding and scaling innovative businesses. Highly skilled in developing and executing strategies that drive product development and growth.
track record
Co-founder, JustTalk AI — personalized AI roleplays for learning English
January 2025 – present
- Working with co-founder to build and scale the business from scratch, applying strategic thinking to product development and market positioning.
- Leading full-cycle product development: from concept to launched MVP.
- Built entire tech stack using AI coding tools (Claude Code, OpenAI Codex) for rapid development.
- Architected scalable infrastructure with CI/CD, handling full-stack web & mobile apps.
- Developed ML pipelines for AI-driven conversation scenarios.
Co-founder & CEO, e-scooter sharing service Berisamocat
June 2020 – present
- Led R&D efforts in the first year, overseeing the research of IoT modules and data protocols with electric scooters.
- Negotiated with international manufacturers and engineers.
- Developed the business model and unit economics for franchise expansion.
- Formulated and executed the product development strategy for the mobile application and IoT management platform.
- Established a predictive analytics system using ML based on trip data across cities.
- Successfully expanded the company from a single city to 30 cities from 2020 to 2024.
Co-founder & COO, coffee shop chain of Coffee Cult
May 2014 – January 2020
- Scaled the coffee shop chain from inception to 10 locations, generating an annual turnover of 150 million rubles.
- Run a barista school to train staff using a proprietary program.
- Implemented a marketing strategy, making Coffee Cult the largest coffee shop chain in the region.
- Started franchise sales.
education
M.Sc. Aerospace Engineering
September 2005 – February 2012
- Tula State University
International student exchange program
May 2010 – September 2010
- Work & Travel USA
Continuing education
2018 – 2024
- Stanford Online, CS229 Machine Learning, Open Course, 2023
- Harvard CS50 online, 2022
- University of Toronto (Coursera), Neural Networks for Machine Learning, 2019
- University of Michigan (Coursera), Python, 2018

Product Leadership
- Product strategy development and roadmap ownership
- Product discovery and hypothesis validation
- UX/UI experimentation and user research
- A/B testing and growth experimentation
- Data-driven product development and metric-based decision making: LTV / CAC, conversion optimization, retention, funnel analysis.
- Building and scaling products from scratch (0 → MVP → Product-Market Fit → scale)
- Building and leading cross-functional product teams
software / tech skills
- Python (Pandas, Streamlit, PyTorch), SQL, PHP, HTML/CSS, VS Code, Git
- Tableau
- Postman
- Adobe Cloud
- Firebase
- SimilarWeb
- Appstore Connect
- Google Play Console
- Figma
academic achievements
Conferences and research papers
January 2012
- Prizeman of the Best Scientific Work Award in Russia, Bauman Moscow State Technical University
Research publications
- Research paper in the proceedings of the “Engineering systems” international forum
- Scientific paper in the proceedings of the “Gagarin’s Readings” forum, MATI — Russian State Technological University
Foreign language
- English, C1