Projects & Case Studies

CTO and Head of Engineering at Artkai, an AI-native software development company, since June 2026. Leading engineering and delivery across client projects and teams, projects in banking and FinTech, crypto trading and healthcare, pre-sales with client visits, the company’s strategy sessions and an AI SDLC for faster, cheaper and better delivery. In progress.

Served as Interim CTO on site at the Dubai headquarters of a global financial trading group: helped launch a new crypto trading platform on a white-label backend while the next Forex app release was in progress, assessed the teams, the infrastructure, DeFi infrastructure and security against compliance requirements, set a one-year roadmap and led the hiring of the permanent CTO.

Built from zero: the team didn’t exist when I joined. In an international technology group running a 24/7 platform, I created the central cloud authority and left one set of standards across Oracle Cloud, AWS and the data centers.

Before the DORA deadline made architectural decisions irreversible, I assessed a Tier-1 Spanish bank’s disaster recovery architecture and benchmarked it against peer European banks on 10+ dimensions. Critical finding: proximity risk in co-located data center sites, invisible in normal operations and visible only under DORA stress-test modelling.

A mature EU pharma CRM heading for US market entry faced three compliance frameworks it wasn’t designed for (SOC 2, HIPAA, GxP), a 660-table PHP monolith, and a fixed market deadline. I defined the target architecture, led the Platform team directly, and delivered a working Go microservices PoC measuring over 4× throughput improvement, in under three months.

Founded Nubes Consulting Digital in 2025 and lead it as Founder and CEO. The company helps SMB and enterprises make difficult technology decisions and carry them through delivery, across cloud, hybrid and on-premise environments: migration, legacy modernization, DevOps, SRE, architecture and managed engineering teams. In progress.

After completing the 3-data-center AWS migration, the same programme team took on something harder: migrating SeLoger’s entire enterprise infrastructure from Orange Cloud, a proprietary French telecom-operator platform with no migration community, no standard tooling, and zero prior team experience. Delivered in six months with zero production incidents.

One of the world’s largest digital real estate tech companies needed to exit three European data centers, but years of staff turnover had erased most knowledge of what was running in them. I joined from day one as both migration team lead and Architecture Board member, rebuilt the infrastructure map from scratch, and delivered the full migration with zero production outages.

I joined Raiffeisen Bank Ukraine as Technical Lead two days before the full-scale invasion began. The planned modernisation roadmap became irrelevant within 72 hours. Under active missile alerts, with a legal barrier waived by emergency central bank order, I led the cloud migration of the bank’s core banking infrastructure without a single business outage. Referenced globally by McKinsey, AWS, and Euromoney.

Jabil, a Fortune 500 electronics manufacturer with 100+ factories globally, built a cloud migration PoC and needed an independent view before committing to global rollout. As infrastructure lead of a three-person expert team, I visited a production facility, analysed the Azure + AWS dual-cloud PoC against real factory OT load profiles, and delivered the decision-support findings the business needed.

Replacing Akamai with AWS native services saved $100,000 per year for the US region alone and improved site access speed by 30%, by solving the specific problem that had kept the migration theoretical: 100,000+ redirect rules, handled via a custom Lambda@Edge function. Deployed across all Amway locations globally. I also led the cross-continental SRE team across USA, Brazil, EU, and India.

Designed and delivered the Cloud & DevOps module for a joint Master’s programme between EPAM Systems and the National University of Kyiv-Mohyla Academy (est. 1615). Faculty colleagues included EPAM’s CEO and Vice-Presidents. The student cohort required 2+ years of engineering experience to enrol, making every session a technical peer discussion grounded in production reality.

At SIXT Leasing SE, I built the unified cloud and DevOps platform that made decoupling a COBOL mainframe monolith into microservices viable: a single Kubernetes cluster (Kops, then AWS EKS) for all projects, one CI/CD platform for all teams, and a security architecture validated through internal penetration testing. Leading 5 DevOps engineers while advising Executive management on strategic IT direction.

External IT audit of Uplata (uplata.ua), a Ukrainian FinTech payment project, on site in October and November 2015: source code quality, IT infrastructure security on the way to PCI DSS certification, and the suitability of internal business processes and staff qualifications.

Built Privatoria from a blank page to 20,000+ users and 120× revenue growth in its first 15 months. Then watched investors take over and the team leave, saw the platform decline, and was invited back to lead the turnaround. The company was stabilised and successfully sold. Two complete startup arcs in one engagement: founder-led growth, crisis recovery, and a successful exit.

Co-founded Ukraine’s first national e-commerce industry association in June 2008, seven years before the country had a legal framework for electronic commerce. As a Management Board member, I represented the sector at the founding press conference at UNIAN (one of Ukraine’s largest news agencies, name in their permanent photo archive) and gave interviews on national business television.

Joined web-studio as a developer, grew to CTO and then to CEO and co-owner, transforming it into premium web studio. Clients included the entire Inter Media Group TV holding (99.7% of Ukraine’s TV coverage). The proprietary e-commerce CRM we built held 60%+ market share across Ukraine and CIS. At peak, our infrastructure processed 90 million specialised requests per day for over 100,000 websites.

Founded Topping (topping.com.ua), a web counter and website ranking platform, and ran it from 2004 to 2011, while the Ukrainian internet was still young. It reached #1 in Ukraine by registered websites (80,000+), processed 21 million daily requests and competed directly with BigMir. Launched 5 spinoff services, saw the software adopted by American professionals for a US regional statistics system, and made two successful investor exits in 2009 and 2011.