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Work Background
AmberGlassFractional CTO
Mar. 2025Amsterdam AreaProviding fractional CTO services to European scale-ups, focusing on technical risk mitigation, growth architecture, and strategic technology decisions that enable sustainable scaling from €3M to €50M+ revenue. Business Risk Mitigation: Conducted comprehensive technical audits for 8+ scale-ups, identifying infrastructure vulnerabilities and architectural debt that could impact funding rounds and customer retention Growth Enablement: Architected scalable solutions that eliminated 70-90% of maintenance overhead, redirecting engineering capacity toward revenue-driving features and competitive differentiation Operational Transformation: Led digital transformations including legacy system migrations, reducing deployment cycles by 50%+ and cutting infrastructure costs by 75% while improving performance Executive Advisory: Provided C-level stakeholders with strategic technical guidance on make-vs-buy decisions, team scaling, and technology investments for sustainable growth Revenue Impact: Accelerated customer acquisition cycles by reducing integration timelines from months to weeks, directly supporting sales velocity and market expansion
AmberGlassFounder
Mar. 2025Amsterdam AreaProviding technical consulting services to European scale-ups, focusing on technical risk mitigation, growth architecture, and strategic technology decisions that enable sustainable scaling from €3M to €50M+ revenue. Business Risk Mitigation: Conducted comprehensive technical audits for 8+ scale-ups, identifying infrastructure vulnerabilities and architectural debt that could impact funding rounds and customer retention Growth Enablement: Architected scalable solutions that eliminated 70-90% of maintenance overhead, redirecting engineering capacity toward revenue-driving features and competitive differentiation Operational Transformation: Led digital transformations including legacy system migrations, reducing deployment cycles by 50%+ and cutting infrastructure costs by 75% while improving performance Executive Advisory: Provided C-level stakeholders with strategic technical guidance on make-vs-buy decisions, team scaling, and technology investments for sustainable growth Revenue Impact: Accelerated customer acquisition cycles by reducing integration timelines from months to weeks, directly supporting sales velocity and market expansion
Scart Kft.ECommerce Integration Lead via Amberglass
Jan. 2025Amsterdam AreaAt Scart, I led the company's migration from a legacy ecommerce platform to a SaaS solution, architecting and deploying a serverless SAP integration that automated critical operations. This transformation eliminated several redundant systems, significantly reduced costs, and streamlined business processes. Key deliverables: - End-to-end technical architecture and implementation
- Stakeholder alignment and communication throughout the project
- Hands-on deployment support and system optimization As a Fractional CTO, I provide high-impact technical leadership on a flexible, part-time basis (1-2 days/week), helping growing companies navigate complex technology transformations without the overhead of a full-time executive.
Intershop CommunicationsFreelance Tech Lead via Amberglass
Apr. 2023 - Dec. 2024Utrecht, Netherlands- Engaged in rapid prototyping sessions with internal stakeholders to understand business challenges and assess technical feasibility.
- Architected, developed, and supported a .NET multi-tenant search engine API, serving up to 80 separate channels per customer.
- Developed a NextJS client dashboard to manage search engine solutions for nearly a dozen customers.
- Collaborated with and supported internal and external teams to cut integration times to less than half (from 4 months to under 2).
- Gave technical guidance to my client's tech teams as well as clear & concise advice to non-technical stakeholders.
- Provided guidance to ops teams on CI/CD & infrastructure setup for a high availability hosting for our solutions in Azure. https://theorg.com/org/intershop/org-chart/ben-zatrok
FirstFocus B.V.CTO
Dec. 2018 - Jan. 2023Utrecht Area, Netherlands- Reduced development time per project from 2-3 months to under 1 month, by migrating from legacy .NET Framework application to a modern .NET Core.
- Successfully delivered several eCommerce projects worth over 100 000 EUR for clients like EkoPlaza and Bouwmaat, through technical leadership and hands on coding.
- Cut deployment times by 90% by implementing Azure DevOps’s CI/CD pipelines.
- Expanded the company’s technical teams with 4 employees and a 7 person offshore team.
- Doubled team productivity by managing efficient ticketing practices for our team of 10+
internal and offshore coders.
- Assisted with the sales process, taking part in nearly a dozen pitches to potential customers.
AmberGlassFounder & Freelance Mobile Developer
Aug. 2016 - Nov. 2018Leiden, NetherlandsStarted as a freelancer and worked on any mobile development-related projects I could get my hands on. The most memorable projects I had were delivering an AR proof of concept for a trauma rehabilitation clinic and building a homecare surveillance system for care facility workers.
One ShoeiOS Mobile App Development Consultant
Feb. 2016 - Aug. 2016Utrecht Area, NetherlandsI briefly worked at One Shoe as a junior iOS dev and was tasked with building OneFit's first iOS iteration. The app successfully launched and is being iterated on to this day.
100gramsMobile Developer (iOS)
Aug. 2015 - Feb. 2016Amsterdam Area, NetherlandsAs a mobile developer, I helped the development of Passenger, 100Grams Software's comprehensive transport tracker app. I was part of the technical development between the 2.1 - 2.3 versions of the app. I also took part in the planning of the company's marketing and monetization strategy. Company: http://100grams.nl/
Passenger app: https://goo.gl/DVMb0i
Scart Kft.Medical Device Advisor
Nov. 2014 - Jun. 2015Budapest, HungaryScart is a Hungarian retailer or professional medical devices and accessories. I worked with them to built relations with clinics and hospitals in Hungary. As a representative of the company I helped develop the business's B2C marketing and took part in the B2B and B2G account handling. I also took part in supplier negotiations and helped secure an exclusive defibrillator device distributorship deal for the EU region.
Scart Kft.Freelance Business Development Specialist
Jun. 2013 - Nov. 2014Scart is a Hungarian retailer or professional medical devices and accessories. I worked with the company first as a translator of medical texts, later as a coordinator of web development project. I currently help them in part-time to plan their online marketing, including SEO, content marketing, Adwords and social media advertisements, as well as helping with the planning and execution of video based content.
RootSelf-Employed - Translation, web and iOS development services
Jul. 2011 - Oct. 2014Horsens, DenmarkDuring my university studies, I started freelance work through my own company, Root. I conducted web development and translation contracts and in 2014 I began iOS app development.
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