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Are you struggling with data quality, AI model output accuracy, or inefficient operational workflows? I help tech companies and fast-growing businesses scale by bridging the gap between raw data and actionable results. Whether you need an AI Quality Analyst to refine your LLM outputs or a CRM Architect to automate your sales pipeline, I provide the engineering precision you need to stay competitive. My approach combines deep analytical rigour with hands-on operational experience, ensuring your systems are not just running, but optimized for scale. 🚀 REAL-WORLD IMPACT & SOCIAL PROOF: • AI & LLM Quality: Applying engineering-based evaluation frameworks to ensure high-fidelity data outputs and logic accuracy in AI training. • Workflow Optimization: Engineered a data-driven strategy that delivered a measurable 33% reduction in ongoing operational expenditures for a commercial platform. • CRM Architecture: Designed and deployed end-to-end HubSpot & MailerLite pipelines, transforming fragmented data into transparent, automated workflows. • Audit & Compliance: Conducted meticulous record auditing in high-compliance environments, managing strict technical standards with zero tolerance for errors. 👉 Ready to elevate your data accuracy or streamline your operations? Let’s connect and map out your strategy. 🔧 WHAT I CAN DO FOR YOU: • AI Training & LLM Evaluation: Rigorous content evaluation, prompt logic testing, and data annotation to improve model performance and reliability. • CRM Architecture & Setup: Building, cleaning, and structuring your HubSpot CRM to ensure flawless tracking across the entire customer journey. • Data & Compliance Auditing: Reviewing systems, historical records, and operational frameworks to find hidden financial gaps and mitigate operational risks. • Process Automation: Eliminating manual bottlenecks by connecting your tech stack into a seamless, automated digital ecosystem. 🛠 SKILLS & EXPERTISE: • AI & Data: Generative AI, LLM Evaluation, Data Annotation, Quality Assurance (QA), Data Analysis. • CRM & Automation: HubSpot, MailerLite, Marketing Automation, Workflow Design, Process Mapping. • Systems & Engineering: Financial Modeling, Contract Auditing, AutoCAD, Technical Documentation. • Methodologies: Agile/Sprint Frameworks, B2B Operations, Data-Driven Decision Making. 📩 Every unoptimized model or manual workflow is a missed opportunity. Send me a message today, and let’s discuss how I can help you scale your operations and refine your data.

Your ads are only as good as the data feeding them. I fix the data. I'm a GA4/GTM tracking engineer with a developer background: 115 Upwork projects, 6,000+ hours, Top Rated Plus. I build and repair the tracking layer that decides whether your ad budget scales or burns: GA4, Google Tag Manager, server-side GTM, Consent Mode v2, Meta CAPI, and Google Ads conversions. Results clients paid for and kept: - Recovered 15-40% of conversions lost to Consent Mode misconfiguration - Cut GA4 event duplication by up to 60% with clean dataLayer architecture - Raised attribution accuracy with server-side conversion APIs for Google, Meta, LinkedIn, and Reddit - Turned hours of manual reporting into minutes with Looker Studio dashboards teams actually open What I handle end to end: - GA4 + GTM: events, ecommerce funnels, custom dimensions, cross-domain tracking - Google Ads conversion tracking and enhanced conversions - Meta Pixel + Conversion API with deduplication and event-quality checks - Consent Mode v2 and GDPR/CMP setups: Cookiebot, OneTrust, custom banners - Server-side GTM for cleaner data and stronger attribution - Shopify, WooCommerce, WordPress, Webflow, Framer, and custom JavaScript tracking - Looker Studio dashboards your team can actually use Why me and not another GTM freelancer: most can click together basic tags. I read source code, inspect the dataLayer, and debug JavaScript - so the tracking I build survives redesigns, plugin updates, and CMS migrations instead of breaking a month later. Top Rated Plus | $100K+ earned | 6,000+ hours | 115 jobs completed How we start: send me your site, ad platforms, and tracking goal. I will map your funnel and tell you exactly what is broken, what is missing, and what it takes to fix it - before you commit to anything.

I am an e-commerce marketing specialist with 6+ years of hands-on experience launching, scaling, and optimizing B2C product businesses in Tier-1 markets (Europe, USA, Asia). I work at the intersection of marketing, product, and operations — which allows me not only to generate traffic, but to build profitable and scalable e-commerce systems. I cover the full cycle of e-commerce growth: • Product research & validation • Unit economics & performance analytics • Store launch (Shopify / WooCommerce / Wix / InSales) • Paid traffic strategy & scaling • Conversion rate optimization (CRO) • Funnels, retention & repeat sales • Logistics & operational setup • Preparing projects for exit / sale 💰 My main focus is profitable growth: ROI / ROAS / CPA / LTV / ROMI optimization through deep analytics, constant testing, and performance strategy. 📈 What I can help you with: • Launching new e-commerce products from scratch • Scaling paid traffic campaigns (Meta Ads, TikTok Ads, Google Ads) • Building high-converting Shopify stores • Improving unit economics and marketing efficiency • Creating and testing ad creatives & UGC strategy • Funnel optimization and customer journey improvement • Market research and niche validation • Influencer & organic growth strategy • Email & SMS marketing automation • Full e-commerce consulting and growth management I have experience working both independently and managing teams (media buyers, designers, developers, SMM specialists). If you need someone who understands not only ads — but the entire e-commerce business model — we will work great together. Let’s build scalable and profitable growth.

I build the measurement layer that sits under an online business: events defined once before anything is coded, collected at the source in the store, sent server-side to GA4 and the ad platforms, and reported on top of that. The goal is a setup your team can plan a budget on and hand to the next person - documented definitions, not tribal knowledge about which tag does what. I'm a digital analyst at a performance marketing agency in Poland, full time, and I take on a handful of projects here alongside it. Same work, smaller teams: tracking that holds up outside a demo store, and reporting somebody actually opens on a Monday. Most of it starts inside the store. On Shopify I rebuild tracking at the source, with a custom pixel in Customer Events instead of another app that half works, checkout and order status covered, every event gated on consent. WooCommerce and custom builds get the same treatment, with the dataLayer written by hand wherever the plugin won't cooperate. And when the browser stops being a reliable place to measure from, I move the whole thing server-side with Stape: your own tracking domain, first-party cookies, Meta Conversions API with event_id deduplication so one purchase never gets counted twice, Google Ads Enhanced Conversions, plus TikTok, LinkedIn or Microsoft if that's where the budget goes. Consent is where most setups quietly break, so I test both halves of it. Nothing fires before the visitor agrees, ad_user_data and ad_personalization are set the way Google expects, and I check the denied path as carefully as the granted one, because that's the one nobody looks at. Cookiebot, OneTrust, Consentmo, or a banner somebody wrote in-house years ago. The point is numbers you can defend when legal asks about GDPR. Then there's the part you look at every week. Looker Studio for most teams, GA4 exported into BigQuery when the questions outgrow the interface, and if a client needs something Looker can't do, I build the dashboard in Next.js straight off the warehouse, so a whole marketing month fits on one screen. Getting the data there is usually n8n: pipelines pulling marketing and sales APIs into one PostgreSQL warehouse that stays current, with retries, deduplication and backfills you can re-run without breaking anything. Some of what I've built lately: - Rebuilt Shopify tracking with a custom Web Pixels pixel and theme dataLayer events, view_item through purchase, Consent Mode v2 gating, verified end to end. - Google Ads Enhanced Conversions on advanced consent: user data captured and validated on the page, but it only leaves once ad_storage and ad_user_data come back granted. - The full WooCommerce purchase funnel in GTM, custom dataLayer variables and a bit of JavaScript to get transaction and product data out of the theme. - Meta, LinkedIn and Microsoft Ads running side by side in one container, consent-aware triggers, revenue that matches across all three. - A marketing warehouse fed from five APIs with n8n, with a Next.js dashboard on top. I don't hand anything over unverified. Tracking comes with GTM Preview, GA4 DebugView, Events Manager and the actual request payloads, automations come with test runs and logs. You get a short write-up of what changed and why, you keep every account and container, and nothing in the setup depends on me still being around. Every project I've finished here is rated 5.0, with recommendations the clients wrote themselves. If you want a starting point, send me your site, your ad platforms and the one number you don't trust. I'll map how your data flows today and tell you what's broken, what's missing and what it would take to fix, before you commit to anything. I'm on CET and normally reply the same day. If you got here searching for something specific: GA4 audits and migrations, Google Tag Manager, server-side GTM on Stape, Meta CAPI and event deduplication, Google Ads conversion tracking, Consent Mode v2, Shopify Web Pixels and Customer Events, WooCommerce, cross-domain and lead tracking, BigQuery, Looker Studio, n8n, PostgreSQL, Next.js.

Hi, I'm Bartosz – Your Technology, Privacy, E-Commerce & Cybersecurity Lawyer. I’m an EU-qualified attorney-at-law with 8+ years of in-house experience advising multinational companies. My expertise covers data privacy, cybersecurity, e-commerce laws, technology (mainly SaaS) contracts and corporate compliance. I specialize in helping businesses navigate complex regulatory landscapes while ensuring compliance and minimizing legal risks. How Can I Help? If you're looking for a specialized legal expert to create legal documentation for your business (especially in SaaS model), guide you through data protection, e-commerce regulations, or cybersecurity requirements, I can assist with: ✅ Data Protection Compliance Audits (GDPR, LGPD, CCPA) ✅ E-Commerce Legal Compliance (Ensuring your online business meets EU laws) ✅ Legal Advisory & Risk Assessment in my areas of expertise ✅ Drafting & Reviewing Legal Documents (Terms & Conditions, Privacy Policies, Data Processing Agreements and similar) ✅ Serving as Your Data Protection Officer (DPO) in the EU ✅ Acting as Your EU Representative under GDPR Why Work with Me? ✔ 8+ years of experience in technology, privacy, cybersecurity, and e-commerce law ✔ Trusted by global corporations (e.g., UBS, Electrolux) and 20+ SMEs ✔ Business-oriented, practical legal advice – no unnecessary complexity What to Expect? I provide clear, actionable legal guidance tailored to your business needs while ensuring full compliance with regulatory requirements. My goal is to help you mitigate risks, stay compliant, and focus on growing your business. Let’s discuss how I can support your legal needs!

I help companies keep their AI outputs, apps, and digital content accurate, compliant, and search-ready. With 3+ years of hands-on experience in quality assurance and content evaluation, I've worked on: → AI DATA QUALITY & CONTENT EVALUATION Evaluated large-scale audio, video, and app content against structured guidelines for major tech clients (via Lionbridge, Thoth AI). I've handled high-volume datasets, timestamp-based tagging, cross-platform metadata verification (Spotify, TikTok), and rule-based decision frameworks — all while hitting strict accuracy and productivity targets under evolving guidelines. This is exactly the kind of precision work that AI companies need for RLHF, model output evaluation, and content moderation projects. → SEO & GEO (GENERATIVE ENGINE OPTIMIZATION) I plan and execute visibility strategies that go beyond traditional SEO — including how brands show up in AI Overviews and AI-powered search. I run technical site audits, optimize on-page content and metadata, and report on performance with clear, actionable KPIs for stakeholders. WHY WORK WITH ME: ✓ Trained eye for detail — I catch what others miss ✓ Comfortable navigating fast-changing guidelines without losing accuracy ✓ Experience with Azure DevOps, Zendesk, and structured ticketing for clean issue tracking ✓ Design-aware: working knowledge of Figma, Canva, and Photoshop means I understand brand and visual consistency, not just text ✓ Native Turkish, fluent English (B2) — reliable for cross-market/localization projects ✓ Background in Social Media Management & Digital Commerce (Master's degree) gives me commercial context, not just checklist execution I take deadlines seriously, communicate clearly, and deliver work that doesn't need a second round of corrections. Let's talk about what you need — I'll be honest upfront if I'm not the right fit.