Категория кейсов: SaaS
Gemsy — a SaaS product for increasing Amazon seller rankings
Gemsy is a two-sided SaaS platform for Amazon authors that allows them to receive book reviews through an internal credit system.
The product was developed from scratch for the U.S. market. The goal was to build a scalable platform with an internal economy, billing, and a quality control system.
Business objective
To build a SaaS product for Amazon authors that:
- Allows users to receive reviews for their books
- Motivates authors to review others through an internal currency system
- Is monetized through subscriptions and paid packages
- Is protected against abuse and manipulation
- Is managed through a centralized admin panel
The product had to be launched as an MVP within a tight timeframe, with the ability to scale further.
Architectural challenges
We needed to implement a secure credit system:
- earning credits for submitted reviews
- spending credits to submit a book
- user balance management
- transaction tracking and control
The platform operates on a user-to-user model:
- authors add their books
- other authors select books to review
- the system matches interests and availability
Implemented features include:
- subscription plans
- paid credit packages
- action limits depending on the subscription tier
- payment system integration
The system includes:
- time restriction (12-hour delay before review submission)
- mandatory paid subscription plan
- Stripe verification
An admin system was developed for:
- review moderation
- user management
- account blocking
- transaction monitoring
- complaint handling
Solution architecture
- User (author)
- Administrator
- Moderator
- Role-based access system
- Internal credit engine
- Billing & subscription module
- Review matching logic
- Notification system
- Admin dashboard
- Fraud monitoring logic
Development process
The project was implemented using a sprint-based model:
- Architectural design
- UX decomposition
- MVP development
- Testing
- Launch
MVP launch timeline — 12 weeks
Result
- Product launched in the U.S. market
- 5,000+ users
- 10,000+ reviews through the system
- Architecture prepared for further scaling
Team role
Full development cycle:
- Product architecture
- UX / UI design
- Backend and frontend development
- Billing implementation
- Administrative system
- Integrations
Product development and monetization enhancement
As Gemsy evolved, the team focused on building an internal economy and mechanisms for organic growth. The product was transformed from a basic user service into a platform with a well-designed engagement and monetization system.
A model with two types of crystals was implemented — separate types of internal currency with different earning and usage logic.
This made it possible to:
- Separate earned currency and premium currency
- Create a flexible reward system
- Prepare the foundation for expanded monetization
- Increase user LTV
From a technical perspective, this required a dedicated system for balance accounting, transaction tracking (credit/debit), and currency usage scenarios within the platform..
A full referral mechanism was implemented:
- Generation of a personal referral link by the user
- Tracking registrations of invited users
- Automatic bonus accrual
- Stripe integration for payouts
The referral system drives viral product growth, reduces customer acquisition cost (CAC), and creates additional incentives for users to promote the platform.
To increase engagement, an event-based notification system was developed with a bell interface displaying platform events.
Implemented features include:
- Tracking key user events
- Trigger-based notification system
- In-platform notifications
- Centralized event display logic
This significantly increased user engagement and improved visibility and control over activity within the platform.
The product evolved into a full-fledged engagement platform with its own internal economy, payment infrastructure, and retention system. The established foundation enables the project to scale and further develop its SaaS model.
Sendyman — Architecture & Development of a Cross-Border Logistics Marketplace
Sendyman is a marketplace-style web platform that connects people who need to send parcels with travelers willing to deliver them along their route.
We built a two-sided logistics system with dynamic route matching, international shipping logic, and a dispute resolution mechanism.
The platform enables:
- Senders — to find flexible and affordable delivery options
- Travelers — to monetize their routes
- The system — to automatically manage statuses, ratings, and transaction security
Business objective
To build a scalable peer-to-peer delivery platform that:
- increases liquidity through flexible search;
- operates across international scenarios;
- minimizes risk via a dispute resolution system;
- allows couriers to see potential earnings before confirming a route.
Solution architecture
- Parcel creation (type, dimensions, fragility)
- Photo upload
- Date selection
- Flexible search (± dates, radius)
- Chat with the courier
- Delivery confirmation
- Rating and tips
- Dispute creation
- Route creation
- Transport selection (plane, car, train, ship)
- Capacity limits (5 slots)
- Dynamic earnings calculation
- International restrictions by cargo type
- Ability to save a route as a draft
- Dynamic matching engine
- Alternative search when no matches are found
- Escrow-like delivery confirmation flow
- Rating system
- Built-in tips
- Dispute management integrated into chat
- Internal currency and referral program
- Real-time notification system
- Two-sided logic (sender / traveler)
- Flexible fallback search (dates and geography)
- International delivery
- Cargo type restrictions
- Dynamic earnings preview
- Full lifecycle: from order creation to dispute resolution
- Trust system (ratings + reviews + tips)
- Progress protection (drafts)
Sendyman is an example of how we design complex two-sided marketplace systems, not just interfaces. We built a peer-to-peer delivery platform with dynamic route matching, international logic, courier earnings calculation, and built-in confirmation and dispute systems.
The result is a scalable logistics ecosystem, ready for growth and expansion into international markets.
Naimex — we developed a full-fledged Recruitment SaaS platform (ATS + CRM + analytics) on Bubble.io
We developed a two-sided HR platform that covers the entire hiring cycle — from job posting and active candidate sourcing to interviews, analytics, and administrative control. The system is built on Bubble.io with an enterprise-grade architecture.
It is a full-fledged Recruitment SaaS platform that combines ATS, CRM, sourcing, and analytics in a single system. It is suitable for recruitment agencies, in-house HR teams, and hiring marketplace models.
Business objective
The client needed more than just a “job board” — they required a full hiring ecosystem:
- Candidate management
- Active database sourcing
- Communication and message templates
- Hiring pipeline and stage management
- Interview scheduling
- Hiring analytics
- Company and recruiter structures
- Administrative user moderation
All of this in a single SaaS system.
Solution architecture
We built a multi-layered platform with role-based access and logic.
- Structured profiles
- Resumes and skills (tags)
- Application tracking
- Behavioral analytics (sessions, viewed job postings, submitted resumes)
- Administrative editing
- User blocking and deletion
- Recruiter creation
- Assignment to companies
- Company structure management
- Recruiter activity monitoring
- Moderation and blocking
- Job creation and editing
- Salary, schedule, location
- Responsibilities and requirements
- Job lifecycle management
- Built-in messaging
- Template categories (initial outreach, interview, test task, rejection, offer)
- Bulk messaging
- Candidate stage management
- Meeting scheduling
- Hiring stage management
- Funnel statuses and transitions
- Number of applications and hires
- Average time to hire
- Conversion funnel
- Monthly trends
- Job performance
- Recruiter activity
- Candidate and recruiter management
- Session monitoring for both sides
- Blocking / unblocking
- Deletion
- Activity control
Architecture from a development perspective
- Complex relational database structure
- Multi-layered role logic
- Conditional interface visibility
- Workflow automation
- Behavioral tracking
- Scalable analytics
- Reusable UI components
Despite using no-code, the system is built with a well-thought-out architecture and enterprise-level logic.
The client received a scalable HR ecosystem capable of managing tens of thousands of users, company and recruiter structures, active candidate sourcing, automated communication, and deep hiring analytics — fully implemented on Bubble.io and ready to evolve as a full-fledged SaaS product.