Serhii Mariiekha
Principal Software Engineer at Hubspot
I’m a Principal Software Engineer with 15 years of experience, having worked at companies like Unity and Ring. At Unity, I optimized their educational platform by transitioning from a monolithic to a service-oriented architecture, significantly improving performance. At Ring (now SQUAD, acquired by AWS), I helped design a high-load system handling 300,000 requests per second and optimized video processing, reducing costs by 70%. I believe in continuous learning and giving back, which is why I’ve mentored 19 startups in building their MVPs and technical teams. I’d be happy to help others achieve their goals.
Serhii Mariiekha
Principal Software Engineer at Hubspot
Polly Watt
Chief Organisational and L&D Strategtist at WattNext
Founder of WattNext, organizational development consultant and strategist for building effective business systems. Has over 20 years of experience in the field of learning, leadership development, change management and operational efficiency. Specializes in organizational diagnostics, knowledge management, scaling teams and implementing AI solutions for business development. Helps founders and leaders build sustainable organizations, improve internal processes and prepare companies for growth.
Polly Watt
Chief Organisational and L&D Strategtist at WattNext
Oksana Rozputna
Strategy & Growth in Defense Tech at Part of Ukraine’s Defense Innovation Ecosystem
I am a strategy and growth expert with over a decade of experience leading market expansion, ecosystem development, and innovation across tech and mobility sectors.My background combines corporate strategy, OKR implementation, business model transformation, and startup mentorship. I have built and scaled new business verticals, led international launches, and advised executive teams on long-term growth and organizational change.I regularly speak on topics such as strategic leadership, ecosystem thinking, and scaling businesses in emerging markets.
Oksana Rozputna
Strategy & Growth in Defense Tech at Part of Ukraine’s Defense Innovation Ecosystem
Vadym Nesterenko
Product & growth manager, DeFi researcher, and angel investor
Head of product and growth at Kolibrio, a company building tools and solutions for different layers of MEV supply chain (OFAs, RPC, telegram trading bot Alfred) (2023-2024)Product manager at Atomica, a decentralized insurance protocol / public liquidations infrastructure (2020-2021)Product manager at GEO Protocol, a Layer 2 protocol / network for instant transfers between CEXs (2018-2019)Lead at DeFi Product management community and organizer of Layer 2 events (1,2) (2019-2020)
Vadym Nesterenko
Product & growth manager, DeFi researcher, and angel investor
Yuriy Andrushchenko
CPO, CTO & Co-Founder at ENTRILIA
My expertise lies at the intersection of FinTech, product strategy, and AI automation. I’ve spent over 15 years building and scaling fund technology platforms, leading product and engineering teams from concept to multimillion-dollar exits. I focus on simplifying complex financial workflows through data-driven design and automation.
Yuriy Andrushchenko
CPO, CTO & Co-Founder at ENTRILIA
Oleksandr Shyt
Strategy and Growth Lead at Universe
Started a career in IT in 2021 as a Business Analyst and quickly grew into the role of Head of Strategy & Operations. At Universe Group, built a Strategy and Growth team of 14 people from scratch. Focused on two major areas: helping existing businesses scale and launching new ones alongside founders.The team's expertise spans four directions:1. Research — identifying new niches, market entry points, and launch hypotheses.2. Investment Analytics — building a round-based system for business launches.3. Payments — expertise in web payments, payment infrastructure, and centralised partnerships. For businesses where monetisation critically impacts outcomes, this is one of the core growth levers.4. Tech Growth — a direction covering two key points: 1. Technical needs: building internal tools, centralised solutions, and shared infrastructure, including AI automation; 2. Supporting new businesses at early stages: core technical roles, forming a tech team, and establishing best practices for a solid technical foundation.
Oleksandr Shyt
Strategy and Growth Lead at Universe
Yura Buhai
Co-Founder and CEO of StudyDive, Chair of the Supervisory Board of Transparency International Ukraine. Independent Consultant on Strategy Development and Implementation.
Yanina Liubyva
Head of the Expert Group on Open Data, Directorate for State Electronic Systems and Data, Ministry of Digital Transformation of Ukraine
Yuliia Tkach
Editor-in-Chief at VECTOR | Media Management | Communications | Speaker | Author & Host
Media Manager with over 7 years of industry experience. Helps businesses amplify their voice and become leaders in the creative economy. Currently serves as Editor-in-Chief of Vector Media. Has more than 6 years of experience in media, communications, and content strategy.
Yuliia Tkach
Editor-in-Chief at VECTOR | Media Management | Communications | Speaker | Author & Host
Serhii Beliakov
Head of Department of Strategic Planning at SE “ICC of the Ministry of Social Policy” | Rehab Social Services Manager at Momentum Wheels for Humanity
Olha Tushych
Certified NN/g UXMC (one of six in Ukraine) and Adobe Visual Design Professional. Product Design Lead at Xenoss.
Business-oriented designer specializing in simplifying complex B2B workflows. Led projects involving web applications, CRM, ERP, SSP, and SaaS ecosystems, including the consolidation of enterprise design systems. As an NN/g-certified professional, confidently automates tasks that once required entire teams and helps rapidly launch MarTech MVPs.
Olha Tushych
Certified NN/g UXMC (one of six in Ukraine) and Adobe Visual Design Professional. Product Design Lead at Xenoss.
