# Cases — 50 case studies from 70+ delivered projects > Case studies across SaaS, healthcare, blockchain, marketplace, education and HR. Context, problem, what we did, stack and result. _Canonical: https://pingvin.dev/cases/_ --- 1. [Home](/) 2. Cases Work # Fifty cases from 70+ delivered projects. Filter by direction or industry. Every case states the stack, the role we played and the team size. DirectionAllAI Automation & AgentsAI Content ProductionProduct EngineeringProduct LeadershipGrowth, UX & Analytics IndustryAllAIAI contentAutomation / AIBlockchainEducationFinanceHR / PsychometricsHealthcare / EdTechHealthcare / FitnessHealthcare / ServicesHospitalityKnowledge & RAGLogisticsMarketplaceReal estateRetailSaaSSales & CRMSocial NetworkTeam Collaboration [Winery Management System](/cases/winery-management-system/) ## Winery Management System SaaS Winery Management System (WMS) is a platform for optimizing wine storage and sales processes, helping its users track wine inventory, create wine lists, and manage sales transactions. Role Team Lead · Full Stack Developer Duration 5 months - Bubble - Bubble API - Algolia - ApexCharts - PDF Monkey [Aroma Library](/cases/aroma-library/) ## Aroma Library Healthcare / EdTech Your Ultimate Learning Platform for Aromatherapy, for beginners and experts alike Quickly find the right essential oils, formulations, and evidence-based insights to create personalized solutions for your clients - saving you time while ensuring safe, effective results. Role Full Stack Developer · Tech Lead Duration V1 - 8 month V2 - 1 month, until now V3 - Not start - Bubble - Bubble API - Algolia - Stripe - Zapier [Big Idea Platform](/cases/big-idea-platform/) ## Big Idea Platform Blockchain A platform for creating ideas and patenting them using the blockchain. Role Team Lead · Tech Lead · Full Stack Duration Close to 12 months - Bubble - AWS - Hedera - MetaMask - Venly [Swiftle](/cases/swiftle/) ## Swiftle Team Collaboration A platform for communication with clients, signing acts, contracts, creating news for landing, setting roles for workers and clients, payment system,blog builder, admin panel etc. Role Team Lead · Tech Lead · PM · Full Stack Duration 3 month, new version 5 month - Bubble - Stripe - SendGrid - Make - SQL [Entice](/cases/entice/) ## Entice Social Network A Community For Artists To Share Work, Find Jobs, And Be Inspired all on a single platform. Role Team Lead · Tech Lead · PM Duration Close to 6 months - Bubble - BDK - Stripe - SendGrid - PDF Monkey [Femme Nativa](/cases/femme-nativa/) ## Femme Nativa Healthcare / Fitness Femma Nativa is a fitness app designed for women by women. Role Tech Lead · Team Lead Duration Close to 6 months - Bubble - BDK - Stripe - SendGrid - Shopify [Squares](/cases/squares/) ## Squares Marketplace Marketplace for renting space for events with various loyalty systems integrations Role Full Stack Developer · PM Duration 3 months - Bubble - Figma - HTML / CSS / JS - REST API [Sets Learning](/cases/sets-learning/) ## Sets Learning Education Platform for learning with the roles of Teacher, Student and Administrator. Role Tech Lead · Team Lead · Full Stack Duration 4 months - Bubble - REST API - Stripe - Daily.co - Lessonspace [Personaliser.io](/cases/personaliser-io/) ## Personaliser.io Automation / AI Generate and send personalized messages based on data from LinkedIn using AI Role Tech Lead Duration 2 months - Bubble - OpenAI - LinkedIn API - HTML / CSS / JS - REST API [Le Collaborateur](/cases/le-collaborateur/) ## Le Collaborateur AI A platform that allows you to upload documents and edit them using AI, create new versions Role Tech Lead Duration 2 months - Bubble - OpenAI - Custom Bubble plugin - HTML / CSS / JS - REST API [Recruitment Platform](/cases/recruitment-platform/) ## Recruitment Platform HR / Psychometrics We enable our clients to generate massive ROI by using scientifically validated psychometric tests to select the best candidates. Role Full Stack Developer · Tech Lead Duration 4 month - Bubble - Bubble API - Stripe - JavaScript - HTML / CSS / JS [Lead processing](/cases/lead-processing/) ## Lead processing Sales & CRM Set up automatic lead-card population for a company: submissions from Meta Lead Forms are parsed, every needed field is extracted and written straight into the CRM — zero manual data entry. - N8N - Meta Lead Forms - CRM API [Country from phone number](/cases/country-from-phone-number/) ## Country from phone number Sales & CRM The CRM had no country detection. - N8N - CRM API [Call processing & transcripts](/cases/call-processing-transcripts/) ## Call processing & transcripts Sales & CRM Integrated Sembly (AI call assistant): it records and transcribes each meeting, then an automation searches the CRM for an entity by participants' emails across types (lead, user, etc.). - Sembly - N8N - CRM API - Slack [CRM required-field guard](/cases/crm-required-field-guard/) ## CRM required-field guard Sales & CRM Required-field validation was a paid-tier CRM feature — so we built our own. - N8N - CRM API - Slack [Personalized lead outreach](/cases/personalized-lead-outreach/) ## Personalized lead outreach Sales & CRM Personalized email campaigns to hot and cold leads, where every message is generated by AI. - N8N - OpenAI - LinkedIn - CRM - SendGrid [Auto lead scoring](/cases/auto-lead-scoring/) ## Auto lead scoring Sales & CRM Every new lead is scored automatically by source, budget and reply speed, then sorted into hot, warm or cold. - N8N - CRM API - OpenAI [Invoice and payment sync](/cases/invoice-and-payment-sync/) ## Invoice and payment sync Sales & CRM Paid invoices from Stripe update the linked CRM deal to “paid” and trigger a thank-you email. - N8N - Stripe - CRM API - Slack - SendGrid [Daily pipeline digest](/cases/daily-pipeline-digest/) ## Daily pipeline digest Sales & CRM Each morning the team gets a Slack digest: new leads, stage changes, deals with no activity for X days and today's scheduled calls. - N8N - CRM API - Slack - Other APIs [Stale lead re-engagement](/cases/stale-lead-re-engagement/) ## Stale lead re-engagement Sales & CRM Leads with no reply for a set period are pulled automatically and sent a personalized re-engagement message tuned to their last stage. - N8N - CRM - Postmark [Review and feedback collection](/cases/review-and-feedback-collection/) ## Review and feedback collection Sales & CRM After a deal closes or a project ships, the client gets an automatic request for feedback. - N8N - CRM API - Postmark - Slack [AI research agent](/cases/ai-research-agent/) ## AI research agent Sales & CRM Give it a company or a lead, and the agent gathers public data, builds a short profile with industry, size and likely needs, and writes it straight into the CRM card before the first call. - N8N - Claude - Web search - CRM API [AI inbox agent](/cases/ai-inbox-agent/) ## AI inbox agent Sales & CRM The agent reads new emails, sorts them by intent, drafts replies for routine ones, flags anything that needs a human, and turns real requests into CRM leads or tasks automatically. - N8N - Claude - CRM API - Gmail [Multi-agent pipeline](/cases/multi-agent-pipeline/) ## Multi-agent pipeline Sales & CRM Several agents work as a team: one qualifies the lead, one researches it, one writes the outreach, one schedules the follow-up. - N8N - Claude - CRM API - Slack [Guest check-in agent](/cases/hospitality-guest-check-in-agent/) ## Guest check-in agent Hospitality Bookings from any channel sync into one place. - N8N - Claude - Booking API - WhatsApp [Review and reputation](/cases/hospitality-review-and-reputation/) ## Review and reputation Hospitality After check-out each guest gets an automatic feedback request. - N8N - Claude - CRM - Email [Shipment tracking and alerts](/cases/logistics-shipment-tracking-and-alerts/) ## Shipment tracking and alerts Logistics Every order is tracked across carriers. - N8N - Carrier APIs - Slack - SendGrid [Route and load planning](/cases/logistics-route-and-load-planning/) ## Route and load planning Logistics Daily orders are grouped by zone and an agent proposes an optimized route and load order, cutting empty mileage and manual planning. - N8N - Claude - Maps API - Telegram [Stock and reorder guard](/cases/retail-stock-and-reorder-guard/) ## Stock and reorder guard Retail Inventory is monitored across channels. - N8N - CRM / ERP API - Slack [Price and competitor watch](/cases/retail-price-and-competitor-watch/) ## Price and competitor watch Retail Competitor prices and your own catalog are checked on a schedule. - N8N - Web scraping - Sheets - Slack [Invoice and payment reconciliation](/cases/finance-invoice-and-payment-reconciliation/) ## Invoice and payment reconciliation Finance Incoming payments are matched to invoices automatically. - N8N - Stripe / Bank API - CRM - SendGrid [Expense and document agent](/cases/finance-expense-and-document-agent/) ## Expense and document agent Finance Receipts and invoices sent to one inbox are read by an agent that extracts amounts, dates and categories, writes them into the accounting sheet, and flags anything that looks off for review. - N8N - Claude - OCR - Sheets [Lead-to-viewing agent](/cases/real-estate-lead-to-viewing-agent/) ## Lead-to-viewing agent Real estate New property inquiries are qualified by an agent, matched to suitable listings, and offered viewing slots automatically. - N8N - Claude - CRM - Calendar [Appointment flow](/cases/healthcare-services-appointment-flow/) ## Appointment flow Healthcare / Services Bookings, reminders and rescheduling run automatically. - N8N - Calendar - WhatsApp - CRM [Company knowledge assistant](/cases/company-knowledge-assistant/) ## Company knowledge assistant Knowledge & RAG An assistant that answers from your own documents, wikis and past projects. - Qdrant - OpenAI embeddings - Claude - LangChain - n8n [Customer support bot](/cases/customer-support-bot/) ## Customer support bot Knowledge & RAG A support bot grounded in your product docs, FAQ and past tickets. - Pinecone - OpenAI embeddings - Claude - LangChain - n8n [Document Q&A](/cases/document-q-a/) ## Document Q&A Knowledge & RAG Upload contracts, reports or manuals and ask questions in natural language. - LlamaIndex - pgvector - OpenAI - OCR - LlamaParse [Sales and proposal helper](/cases/sales-and-proposal-helper/) ## Sales and proposal helper Knowledge & RAG An assistant that knows your pricing, case studies and past proposals. - Weaviate - Claude - OpenAI embeddings - LangChain - n8n [Legal and compliance search](/cases/legal-and-compliance-search/) ## Legal and compliance search Knowledge & RAG Search across policies, regulations and internal rules by meaning, not keywords. - Qdrant - Cohere embeddings - Claude - LlamaIndex - Custom interface [Personal / expert clone](/cases/personal-expert-clone/) ## Personal / expert clone Knowledge & RAG A chatbot trained on one person's content (courses, posts, transcripts) that answers in their voice and knowledge. - Chroma - OpenAI - LangChain - n8n - Telegram [AI image generation](/cases/ai-image-generation/) ## AI image generation AI content Original visuals, product shots, portraits and model imagery — single images or 5–10 image series — with consistent style and characters. - Midjourney - Leonardo AI - FLUX - DALL·E - Nano Banana Pro [AI avatars & characters](/cases/ai-avatars-characters/) ## AI avatars & characters AI content Consistent AI characters and avatars — a recurring brand face or model across images and video, including talking AI-avatar videos. - HeyGen - ComfyUI - FLUX - LoRA - IPAdapter [AI video generation](/cases/ai-video-generation/) ## AI video generation AI content Short clips and motion (5–30s) from prompts and still images — promos, teasers, AI reels and animatics. - Kling AI - Veo - CapCut - ComfyUI - Wan 2.2 [AI music & sound](/cases/ai-music-sound/) ## AI music & sound AI content Background music, atmospheric soundscapes and short musical pieces for AI reels, ad creatives and storytelling videos — matched to the mood, script, audience and visual style with Suno AI. - Suno AI - ComfyUI - ACE-Step - Stable Audio [AI voice generation](/cases/ai-voice-generation/) ## AI voice generation AI content Cloning and synthesizing natural voiceovers and narration in multiple languages. - ElevenLabs - F5-TTS - XTTS - RVC - ComfyUI [Social media content](/cases/social-media-content/) ## Social media content AI content Ready-to-post content for Instagram and socials — single posts, 5–8 slide carousels and full monthly content packages. - Canva - Instagram - Carousels - Monthly packages [Editing & post-production](/cases/editing-post-production/) ## Editing & post-production AI content Upscaling, retouching and editing/montage — turning raw AI images and video into finished, polished deliverables. - CapCut - Canva - Upscale - Retouch [Design & content prep](/cases/design-content-prep/) ## Design & content prep AI content Social visuals, covers, stories, presentations, portfolio layouts, simple ad mockups and text-on-image — the final, polished delivery of AI content for brands. - Canva - CapCut [Local / self-hosted AI](/cases/local-self-hosted-ai/) ## Local / self-hosted AI AI content Setting up and running AI models on a local machine for privacy, full control and zero per-use cost. - ComfyUI - Ollama - LM Studio - Stable Diffusion [End-to-end content production](/cases/end-to-end-content-production/) ## End-to-end content production AI content The full content cycle in one hand: idea → script → image generation → AI animation → editing → music & sound → final reel or ad creative. - Idea & script - Generation - Editing - Music & sound No cases match that combination.