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I turn complex SaaS product problems into clear decisions, measurable outcomes, and buildable work. Senior SaaS Product Owner / Product Manager / Business Analyst — 8+ years across B2B and B2C SaaS. Remote, async-friendly, UTC+4, collaborating daily with UK and US teams. I help SaaS teams bring clarity to complex, high-stakes products — enterprise platforms, multi-sided marketplaces, and internal data and reporting tools — turning unclear product logic into buildable requirements, PRDs, user stories, roadmaps, and a delivery-ready backlog. These are the situations where being 70% right is a liability, not "good enough," and the real job is getting requirements right, catching the edge cases, and driving delivery across teams. Strongest fit: enterprise SaaS, internal data/reporting tools, and multi-sided marketplaces with roles, booking, commission/payout logic, or complex workflows. Where this comes from: ➨ Juriba (enterprise SaaS) — I grew from Feature PO to Area Product Owner, coordinating delivery across 2+ Scrum teams for a platform used by large organizations and financial institutions to migrate and modernize their IT at scale. I owned a product-area roadmap and backlog, mentored junior POs, and delivered features against enterprise security, data-protection, and accessibility standards (GDPR, ISO 27001, WCAG). Two of the streams I owned were data-heavy: a self-service component for building surveys and collecting structured data, and table/dashboard views that turned raw platform data into clear answers to user questions. ➨Accomplishr (B2C marketplace) — I joined early to turn a buggy, confusing product into something users could rely on. Beyond restructuring the backlog and rewriting unclear user stories, I owned BookNow — the session booking flow, marketplace roles, and the commission and payout logic between platform and providers. The Stripe integration and commission model predated me and were buggy and underdefined: I cleaned up the flow, surfaced the undefined fees and the missing tax handling, and turned them into explicit, documented MVP decisions — with location-aware tax calculation scoped to the roadmap. How I work: structured, delivery-focused, honest about what's realistic. I use AI-assisted tools (ChatGPT/Claude, Cursor) in my everyday workflow to move faster from product logic to clear requirements and prototypes — speed underneath the work, not a substitute for the thinking. I built GymBuddy, an Android fitness MVP, end-to-end this way (see Portfolio). On Upwork: Top Rated Plus, 100% Job Success, 9,400+ hours delivered. I can help with: ➧Requirements, PRDs, BRDs/FRDs, user stories, and acceptance criteria for complex flows ➧Product discovery, MVP scope, roadmaps, prioritization, and release planning ➧Multi-sided marketplace logic — roles, booking, commission/payout flows, edge cases ➧Internal data and reporting tools — data collection, table/dashboard views, current/future-state mapping ➧Jira / Confluence backlog setup, cleanup, grooming, and delivery structure ➧Enterprise delivery: security/accessibility standards, QA/UAT readiness, stakeholder alignment ➧SaaS onboarding and activation audits — journey mapping and a prioritized fix list Best fit: teams building genuinely complex SaaS — enterprise platforms, marketplaces, or data-heavy products — that need someone who turns unclear input into structured, buildable work and names the hard parts before they become incidents.

I am a Spatial Data Analyst with an academic background in Human Geography and practical experience in geopolitical analysis, international logistics, and spatial intelligence. I specialize in converting complex geographic, socio-political, and operational data into clear, decision-ready visual insights. Whether you need advanced spatial modeling, publication-ready cartography, regional political risk assessments, or transport network visualization, I bridge the gap between technical GIS workflows and real-world strategic logic. Geospatial Analysis & Mapping (Primary Focus) My core specialization is helping businesses, research organizations, and policy analysts analyze, manage, and visualize spatial data using QGIS and custom cartographic workflows. Spatial Analysis & Modeling: Vector and raster data processing, spatial joins, overlay analysis, and site suitability modeling. Custom Cartography & Publication Maps: Designing clean, professional thematic maps, regional atlases, and visual data layouts for research reports, policy briefs, presentations, or digital media. Human Geography Foundation: My background in human geography gives me a deep understanding of spatial demographics, regional economic structures, state dynamics, and trade corridors—ensuring output that communicates meaningful geographic context. Geopolitical & Political Analysis I conduct analytical research focusing on regional geopolitics, spatial policy, and geo-economics. This background enables me to add qualitative and contextual depth to spatial datasets. Political & Spatial Intelligence: Analyzing socio-political trends, border dynamics, regional conflicts, and policy shifts using open-source research and spatial context. Geo-Economic & Trade Research: Examining how international relations, diplomatic shifts, and regional policy impact trade routes, economic stability, and cross-border flow. Analytical Writing & Briefings: Translating complex geopolitical developments and spatial data into structured, easy-to-digest briefs and intelligence summaries. Logistics & Operational Coordination Complementing my analytical background, I bring practical experience in international freight forwarding, quote coordination, and truck dispatching. This gives me a unique operational perspective on transport networks and logistics data. Network & Corridor Optimization: Applying real-world knowledge of transport bottlenecks, transit constraints, and trade routes to spatial and geographic problems. Operational Data & Tracking: Visualizing supply chains, freight flows, and dispatch networks with precision and high attention to detail. Tools & Technical Skills GIS & Cartography: QGIS, Spatial Analysis Tools, Python (for spatial scripting and basic automation) Research & Data: Qualitative & Quantitative Research, OSINT/Open-Source Intelligence Gathering, Excel/Google Sheets Why Work With Me? Multi-Disciplinary Insight: I don't just generate static maps—I understand the economic, political, and operational reality behind spatial data. Clear Communication: I convert dense geographic and analytical datasets into intuitive maps and structured briefs that simplify complex decisions. Reliable & Precision-Driven: Having worked in fast-paced logistics and research environments, I value accuracy, strict deadlines, and proactive communication. If you have a spatial dataset to map, a transport corridor to visualize, or a regional political/geo-economic topic to analyze, send me a message—let's discuss your project!

Full stack developer with 𝟭𝟬 𝘆𝗲𝗮𝗿𝘀 of experience building web applications and advanced data visualizations. My backend work centers on C#/.NET, Python, and Node.js, with frontend expertise across SvelteKit, React, Angular, and Vue. For data visualization, I work with D3.js, Three.js, WebGL, and HighCharts — leveraging existing tools where they fit, and building custom interactive components from scratch when they don't. For advanced mapping applications, I use Mapbox. As part of small teams, I've served as a key contributor on projects for Harvard, Mastercard Foundation, Sequoia Capital, CompTIA, and DataStax. I also bring experience with AI-powered features, LLM integration, and prompt engineering. Experienced working with databases: Oracle, MSSQL, PostgreSQL. Experienced working with platforms: Supabase, Lovable, Strapi CMS.

Cyber Security Professional with demonstrated experience in Penetration Testing, Security Engineering and Security Consulting. BS in Cyber Operations, Offensive Security Certified Professional (OSCP), Offensive Security Wireless Professional (OSWP), GRTE (GCP Red Team Expert), CASA (Certified API Security Analyst), API Penetration Testing, Certified AI/ML Penetration tester, SANS Technology Insitute. Core Competencies: 1. Network Penetration Testing 2. Web Application Penetration Testing 3. Social Engineering (Phishing, Vishing) 4. API Penetration Testing 5. Security Training 6. Defensive Solution Configurations/Reviews (Security Engineering) 7. Malware Analysis 8. Cyber Risk Analysis

I help with online research, competitor analysis, product research, and data collection. My background is in frontend development, QA, and UI/UX, so I’m comfortable working with technical topics, software products, SaaS, AI tools, and digital businesses. I can help with: • Web research • Competitor research • Product and SaaS research • Feature and pricing comparisons • Data collection and verification • Google Sheets and Excel • Research summaries and reports I’m good at finding information, checking it across different sources, organizing it, and presenting the results clearly. I can also quickly learn new topics and industries when needed. Technical background: React, JavaScript, QA, Figma, UI/UX.

An inappropriate approach can turn your ML system into a cash-eating monster or keep you stuck in a suboptimal solution for years. That’s why you need a seasoned ML Engineer, who can navigate your business objectives and optimize for the business performance, not for some abstract metric that has no effect on your desired results. From small businesses looking to launch their first model, to big enterprises with tens of models already in production - I designed dozens of reliable, scalable and maintainable pipelines. By framing your requests into ML problems with appropriate metrics, I guarantee that my system will generate value for your business, otherwise I won’t take the job. My experience: - 3+ years developing novel Machine Learning applications. (Audio, CV, NLP, Recommender Systems) - 2+ years of MLOps. (GCP, AWS) - 2+ years of RnD. (Published in a scientific journal.) - 1+ years of back-end development and database management. (Python, Django, SQL, NoSQL, REST, etc.) - 1+ years of Web Development (TS, React) What I can help you with: • You have an idea for a novel ML product that you want to actualize. • You want to improve or deploy your existing system. • You need help collecting or processing a dataset. • You have a dataset and you want to gain insights or make predictions. • You have a full-stack ML application that you need help with at any stage. Here is what happens after I take your job: 1. I help you define your expectations and constraints. 2. I create a plan for you and I test as many different solutions as possible. 3. I explain to you all the trade-offs and I help you choose the most appropriate one. 4. I develop your system. 5. I thoroughly test your system. If you are ok paying an extra 300$ PER HOUR for that 1% performance boost, hire someone else. I don’t waste your time and money on technical advancements that your end users will never notice. So, if you want to fully leverage the power of AI, send me an offer or invite me to the job right now. Let’s take it from there. Best, Arsenii