You will get a custom Price Monitor App hosted on GCP with Supabase integration
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Project details
I will develop and deploy a custom price-tracking application directly on your Google Cloud Platform (GCP) account. This solution integrates with external data sources to monitor holiday offers and flight routes, saving history to a database and alerting you on changes.
Key Benefits:
• Cloud Architecture: Built on Google Cloud Run & Scheduler for high reliability and performance.
• Data Persistence: Automatically logs all price history into a Supabase database for analysis.
• Fully Automated: The system runs in the cloud 24/7 without manual intervention.
How it works:
• Connect: The app queries the target's data endpoints every 2-4 hours.
• Store: Saves structured data to Supabase.
• Alert: Sends instant email notifications when price changes are detected.
What is included:
• 1 Travel Agency Integration: Monitor up to 3 specific holiday packages.
• 1 Airline Integration: Monitor up to 3 specific flight connections.
• Instruction: I will show you how to update the target parameters in the future.
⚠️ IMPORTANT: Please contact me before buying. I must verify if the target websites have accessible data structures or public APIs for integration.
Key Benefits:
• Cloud Architecture: Built on Google Cloud Run & Scheduler for high reliability and performance.
• Data Persistence: Automatically logs all price history into a Supabase database for analysis.
• Fully Automated: The system runs in the cloud 24/7 without manual intervention.
How it works:
• Connect: The app queries the target's data endpoints every 2-4 hours.
• Store: Saves structured data to Supabase.
• Alert: Sends instant email notifications when price changes are detected.
What is included:
• 1 Travel Agency Integration: Monitor up to 3 specific holiday packages.
• 1 Airline Integration: Monitor up to 3 specific flight connections.
• Instruction: I will show you how to update the target parameters in the future.
⚠️ IMPORTANT: Please contact me before buying. I must verify if the target websites have accessible data structures or public APIs for integration.
Programming Languages
PythonWhat's included $330
These options are included with the project scope.
$330
- Delivery Time 7 days
- Number of Revisions 2
- Content Upload
- Source Code
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Stefania S.
Jun 30, 2026
TV Subscriptions User Feedback (Poland)
It was really lovely working together, and we really appreciate your prompt responses and diligent work. I hope we can collaborate on similar studies in the future!
The work done will help our client improve their product for users across various European markets.
The work done will help our client improve their product for users across various European markets.
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joseph x.
Jun 23, 2026
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Mike Z.
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About Mariusz
EXPERT EMAIL DEVELOPER || Email Marketing Strategist & AI Architect II
99%
Job Success
Opole, Poland - 2:21 pm local time
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
Steps for completing your project
After purchasing the project, send requirements so Mariusz can start the project.
Delivery time starts when Mariusz receives requirements from you.
Mariusz works on your project following the steps below.
Revisions may occur after the delivery date.
I program and install the application.
The application will be installed on GCP, and the database will be on Supabase.