I'm an Email Developer and Email Marketing Strategist with a programming background in AI-powered automation and system architecture.
With 15+ years of experience, 4,000+ projects delivered for 1,900+ clients worldwide, I build production-ready email systems - not just templates - combining clean HTML/CSS, lifecycle automation, marketing strategy, deliverability expertise, and AI-driven workflows under one roof. Top Rated Plus on Upwork with $700K+ in earnings.
What I do:
1. Email Development (Core)
Custom HTML/CSS email builds - mobile-responsive, dark-mode-ready, cross-client tested. I work across Mailchimp, HubSpot, Salesforce / Pardot, Marketo, Klaviyo, ActiveCampaign, Campaign Monitor, SendGrid, and Iterable. In 2015, Mailchimp recognised me for identifying and fixing critical rendering bugs in their templates. Certified Mailchimp Partner.
2. Email Marketing Strategy & Execution
End-to-end email marketing - audits, campaign planning, segmentation, lifecycle automation (welcome, nurture, re-engagement, winback), A/B testing, and performance optimisation. I build scalable, compliant email programs with predictable long-term performance. I handle both strategy and execution end-to-end.
3. AI Architecture & Intelligent Automation
I build AI-powered audit and automation systems connected directly to your ESP/CRM via MCP servers. AI analyses your flows, campaigns, deliverability, and engagement data in real time - producing structured audit reports and prioritised fix lists. Examples: automated Klaviyo flow audits with copy rewrites, real-time deliverability monitoring, and engagement scoring. I also build RAG MCP servers that let AI reference your internal docs, brand guidelines, and performance history during audits and content generation.
4. Front-End & Automation Development
Custom applications, internal tools, dashboards, and integrations using JavaScript, Python, React, Google Apps Script, and n8n. I connect CRMs, ESPs, databases, Google Sheets, and APIs into unified automated workflows.
Core services:
★ Custom email development (HTML/CSS, dark mode, responsive, cross-client)
★ Email marketing strategy, audits & campaign execution
★ AI-powered ESP/CRM audits via MCP server integration
★ RAG MCP servers for context-aware AI recommendations & content generation
★ Lifecycle automation (welcome, onboarding, nurture, re-engagement, winback, lead scoring)
★ Deliverability setup & troubleshooting (SPF, DKIM, DMARC, sender reputation)
★ Segmentation strategy (openers, clickers, inactive users, RFM, predictive)
★ A/B testing, reporting & performance optimisation
★ Advanced ESP customisation (HubSpot HubL, Salesforce AMPscript, Marketo Velocity)
★ AI agents & n8n automation systems
★ CRM & ESP integrations (HubSpot, Salesforce, Marketo, Mailchimp, Klaviyo, ActiveCampaign)
★ Custom Google Sheets & Apps Script solutions (dashboards, triggers, integrations)
★ API-based integrations & webhook workflows
★ Cross-client email testing (Litmus, Email on Acid, dark mode, Outlook VML fixes)
Why work with me:
★ 15+ years in email development and email marketing
★ 4,000+ projects for 1,800+ clients (Microsoft, Netflix, Unilever, Toyota, Adobe, BBC, Meta, Amazon Prime Video, TikTok, Adidas, Sony, Coca-Cola, Hyundai, LG, Renault, Bayer, 3M, and more)
★ Member of 32 Upwork Talent Cloud groups (Enterprise Professionals, Microsoft UTC, Netflix Print Production, Unilever, Tata Communications, Holland & Barrett, Janus Henderson, and others)
★ AI-powered audit and automation capabilities (MCP + RAG architecture)
★ End-to-end ownership - strategy, development, execution, optimisation
★ Clean, maintainable code and scalable architecture
Certificates: HubSpot Marketing Software, HubSpot Email Marketing, HubSpot Contextual Marketing, Mailchimp Email Automations, Mailchimp Foundations, Python (Alison), Salesforce for Admins, Managing DNS, Advanced CSS Media Queries, Google Ads Measurement.
Skills: HTML5, CSS, Email Development, Email Deliverability, AMPscript, HubSpot HubL, Marketo Velocity, JavaScript, Python, React, Google Apps Script, n8n, APIs & Webhooks, MCP Servers, RAG Architecture, AI Agents, Marketing Automation, CRM Integrations
I use AI as a development and analysis accelerator - speeding up coding, testing, auditing, and iteration - while maintaining full control over architecture, logic, and production quality.
Availability:
★ Mon–Thu: 3:00 AM – 11:00 AM EST, 3:00 PM – 7:00 PM EST
★ Friday: 3:00 AM – 11:00 AM EST
HubSpot
Mailchimp
Pardot
Marketo
HTML5
Salesforce
Email & Newsletter
Email Marketing
Email Template
SendGrid
CSS
Email
Google Cloud Platform
Google Apps Script
AI Agent Development
Illia S.
Lublin, Poland
$20/hr
5.0
9 jobs
Greetings, wanderers of the digital realm! I'm the peculiar specialist in the mystical arts of no-code sorcery, wielding tools like Zapier, Make, ActiveCampaign, Integromat, and Airtable to weave enchanting spells that simplify businesses and amplify efficiency.
Journey through My Expertise:
🔮 Tool Mastery: Behold my mastery of Zapier, Make, ActiveCampaign, Integromat, and Airtable - the wands in my arsenal for conjuring seamless integrations and workflows.
✨ Workflow Alchemy: Peer into the cauldron of processes, identify inefficiencies, and behold as I brew automated elixirs to elevate productivity and enchant your operations.
🏰 Custom Enchantments: Crafting personalized spells, I align my sorcery with your unique business needs, invoking the power of these tools for bespoke enchantments.
🔮 Teachings of the Arcane: Bestowing comprehensive guidance, I empower your fellowship to wield these magical systems with finesse.
My Mystical Feats:
🌟 Proven Magic: I've banished manual workloads and invoked efficiency for diverse clients with my spells using Zapier, Make, ActiveCampaign, Integromat, and Airtable.
🤝 Wizardly Collaboration: Through mystical consultations, I align my incantations with your visions, conjuring bespoke solutions for your quests.
🚀 Uncharted Incantations: Constantly studying the arcane texts of these mystical tools, I'm ever ready to bring forth cutting-edge enchantments.
Join Me in the Quest:
Embark on a magical quest to streamline operations, automate tasks, and empower your team using Zapier, Make, ActiveCampaign, Integromat, or Airtable. Together, let's unravel the mysteries and weave magic into your business!
HubSpot
Make.com
Zapier
Automation
Airtable
No-Code Development
Marketing Automation
ActiveCampaign
CRM Development
OpenAPI
API
API Integration
ChatGPT
OpenAI API
n8n
Pipedrive
AI Chatbot
AI Agent Development
Twilio API
Marketing Automation Software
Aleksandra O.
Samborowo, Poland
$25/hr
5.0
5 jobs
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.
HubSpot
Large Language Model
Data Annotation
Prompt Engineering
Content Management
Quality Assurance
Customer Relationship Management
Marketing Automation
Business Process Automation
Data Analysis
Business Analysis
Financial Modeling
Project Management
Autodesk AutoCAD
Generative AI
Mateusz J.
Krakow, Poland
$80/hr
4.9
199 jobs
- 2023 Platform Migration Excellence HubSpot Impact Awards Winner
- HubSpot DIAMOND Certified Partner, specialising in HubSpot Implementation, HubSpot Onboarding and HubSpot CMS Development
- Co-founded Inbound marketing departments within existing companies.
- Created and developed an exclusive lead generation strategies.
- Implemented HubSpot marketing automation software in 10 countries and became the biggest customer* in the region.
- Managed the work of marketing specialists to deliver full campaigns.
- Supervised the creation of websites, landing pages, email newsletters and various pieces of marketing or multi-media content.
- Spent 15 000 hours in HubSpot last seven years.
I work with well-funded startups (backed by Andreessen Horowitz, Greylock, Khosla, SV Angel), established companies with +250 employees, and also help with starting new projects.
Visit 6minded.com for all my work.
HubSpot
Marketing Operations & Workflow
Marketing Automation
Lead Generation
User Experience Design
Marketing Strategy
Inbound Marketing
Website Prototyping
Website Migration
Customer Relationship Management
Borys G.
Krakow, Poland
$40/hr
5.0
6 jobs
Need a reliable system that automates your business processes, reduces manual work, routes leads correctly, ensures timely follow-up, and keeps data synchronized across your business tools?
You get practical CRM and marketing automation systems built with ActiveCampaign, HubSpot, Pipedrive, GoHighLevel, Make, Zapier, and other automation platforms.
Depending on your needs, your automation system can include:
📊✅ CRM Automation — HubSpot, Pipedrive, GoHighLevel
▸ CRM setup and optimization in HubSpot, Pipedrive, GoHighLevel, and other CRM platforms
▸ Lead capture from forms, landing pages, ads, calendars, and other sources
▸ Pipelines, lifecycle stages, contact fields, tags, tasks, and deal records properly organized
▸ Automated lead routing based on source, location, service, qualification, or team member
▸ Follow-up workflows, task creation, notifications, appointment reminders, and pipeline updates
▸ CRM cleanup, duplicate prevention, workflow troubleshooting, and process documentation
▸ A2P 10DLC setup, phone number registration, and SMS compliance support in GoHighLevel and Twilio
📧✅ Email Marketing Automation — ActiveCampaign, Mailchimp, Klaviyo
▸ Automated email sequences, nurture workflows, and follow-up campaigns
▸ Behavior-based triggers, conditions, goals, delays, and branching logic
▸ Contact segmentation using tags, lists, custom fields, and engagement data
▸ Webinar reminders, onboarding, confirmations, re-engagement, and abandoned-action workflows
▸ CRM synchronization, lead updates, and automated campaign enrollment
▸ Domain and DNS setup in Namecheap, GoDaddy, Squarespace, Cloudflare, and other providers
▸ Email authentication and deliverability: SPF, DKIM, DMARC, domain verification, and blacklist checks
🔌✅ API & Integrations — Make, Zapier, n8n, Webhooks
▸ Multi-step workflows built in Make, Zapier, and n8n
▸ AI-powered workflows for lead qualification, data extraction, content processing, and CRM updates
▸ Custom API integrations when native connections are unavailable or limited
▸ Webhook flows between forms, funnels, CRMs, email platforms, calendars, spreadsheets, and databases
▸ Automated synchronization of contacts, deals, tags, notes, tasks, and other business data
▸ Duplicate prevention, data validation, error handling, and workflow monitoring
▸ Troubleshooting and optimization of broken automations, API connections, webhook flows, and mapping issues
The result is a reliable, well-organized system that reduces manual work, prevents leads and data from falling through the cracks, and gives your team clear, tested, and maintainable workflows that support daily operations and business growth.
Send me a message 💬 and let’s schedule a call 📞 to discuss your project details.
HubSpot
Make.com
Zapier
Automation
Marketing Automation
API Integration
HighLevel
Business Process Automation
System Automation
Airtable
Customer Relationship Management
CRM Automation
CRM Software
Google Sheets Automation
ActiveCampaign
Marketing Automation Software
Automated Workflow
Data Integration
Spreadsheet Automation
Lead Management Automation
Marek B.
Kórnik, Poland
$100/hr
4.8
327 jobs
🔥 LIMITED AVAILABILITY - currently taking on a few long-term clients:
🟢 1 spot open in the $3,500+/month range
🟢 2 spots open in the $5,000+/month range
Once they're filled, the next opening is next quarter. If you're scaling, message me before they're gone.
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SERVER-SIDE TRACKING, (also) RESTRICTED-INDUSTRY ADS & PERFORMANCE MARKETING and AI automations - the work most agencies can't quote on.
I scale paid acquisition for brands that break standard agency templates: regulated verticals, broken tracking, signal loss, account-ban risk. If Google and Meta keep shutting your competitors off - or your data's been wrong since iOS 14 - that's exactly where I work.
15+ years in Google Ads, (12+) Meta Ads, GA4, GTM and server-side tracking. Former CTO of a UK marketing agency. ISTQB Certified. I've supported accounts running $1M+/month in ad spend, and I recently scaled a new store from $0 to $200k/month in revenue in 6 months.
⭐ "Incredible scaling of ad spend while maintaining ROAS. Tracking and attribution implementation top notch." - verifiedpeptides (Regulated · Peptides, Upwork-verified)
WHERE I'M THE SPECIALIST MOST CAN'T REPLACE:
🎯 SERVER-SIDE TRACKING & ATTRIBUTION - sGTM, Meta CAPI, GA4, Enhanced Conversions, event deduplication, no-cookie attribution. Built to survive iOS, signal loss, ad blockers and restricted-account conditions. (from $3,500 · complex/restricted from $6,000)
🎯 RESTRICTED VERTICALS - Supplements, CBD, Peptides, Healthcare, ED, Legal. Compliance architecture, multi-account risk isolation, proactive ban management, policy-aware creative. The work that keeps you live and scaling when competitors get banned. (setup from $5,000 · management from $6,000/mo per channel)
🎯 GOOGLE & META PERFORMANCE MANAGEMENT - full campaign management, bid and budget optimization, weekly reporting. Generic e-commerce/lead-gen from $5,000/mo per channel; Growth single-channel start from $3,500/mo.
🎯 0 TO HERO (3-month programme) - launch or relaunch paid ads with a working system, clean data and a documented playbook. Tracking included. ($5,000 flat)
🎯 AI AUTOMATION - Make, n8n, Zapier, custom AI agents and API integrations that kill manual work in reporting, lead routing, QA and ops, increase sales and decrease lost leads.
🎯 FRACTIONAL CMO/CTO - senior marketing or technical leadership on retainer for brands that need an operating layer, not just campaigns. (from $12,000/mo)
WHO THIS IS FOR: brands spending $10k+/month on ads ($3k+ for project work) who are scaling past template agencies, running regulated, or losing revenue to broken tracking.
WHO IT'S NOT FOR: under $3k/month spend, social content/community management, web design, or accounts I can't understand within 48 hours - I don't take work I can't do properly. For starting clients I offer 0 to hero 3 months fixed rate plan. After initial consultation to understand if we are good match.
I connect ads, data, tracking and AI into one system. Better tracking → better data → better decisions → faster scaling. Most freelancers do one piece. I do the whole stack.
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👉 LET'S TALK — TWO WAYS TO START:
1️⃣ BOOK A $5 USD 15 MINUTE CONSULTATION - bring your situation, I'll bring the diagnostic. I'll flag the 1–2 biggest leaks I can see and we'll agree honestly whether it's a fit. Message me "CALL" and I'll send the link.
2️⃣ BUY THE $75 or $150 consultation (on my profile) - the fastest way to get me on a call and start the conversation. Simply go to my profile and book a call. Please read description of consultation and choose right one (30 min could be not enough of time on first meeting).
Don't let broken tracking and template agencies cap your growth. Send me a message, book a consultation call or grab the $5 project now - these spots fill fast.
Mark
Facebook Ads Manager
Marketing Analytics
Google Ads
PPC Campaign Setup & Management
Facebook Advertising
Google Tag Manager
Shopify
Google Ads Audit
Google Ads Account Setup
Google Ads Account Management
Tracking Pixel
Google Analytics 4
Google Merchant Center
Google Shopping
YouTube Ads
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