Ivnoff Dev

Full-Stack Software Developer for startups, agencies, and digital products

Specialized in SaaS and B2B products

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Case studies

Cases where technology solved real business problems and generated measurable results.

Advanced Auth Kit | Production-ready authentication system
Full-Stack · Frontend · Backend · DevOps
Advanced Auth Kit | Production-ready authentication system

Every new product required developing critical authentication features from scratch, consuming valuable time and delaying launches. I designed and developed a complete, reusable authentication system for modern web applications, including registration, login, password recovery, Google OAuth, two-factor authentication (2FA), session management, and email confirmation. The project was packaged as a digital product and sold internationally, speeding up the development of new products and validating its adoption by other developers.

✓ 6 licenses sold on BuyMeACoffee✓ 1 license sold on Gumroad✓ Product sold internationally✓ Production-ready reusable architecture
Zynda | Appointment management and automation SaaS
SaaS · Full-Stack · DevOps · MVP
Zynda | Appointment management and automation SaaS

Small businesses lose appointments and sales opportunities by managing their schedules through WhatsApp, phone calls, and manual processes. I built Zynda from scratch as a SaaS platform to centralize the management of appointments, clients, teams, and branches. I implemented automated reminders via WhatsApp, SMS, and email, direct integration with the WhatsApp Business API as an official Meta Tech Provider, and artificial intelligence to automate customer service and scheduling. More than 50 businesses use the platform to automate their daily operations, reduce administrative tasks, and provide a more efficient customer service experience.

+50 active businessesOfficial Meta Tech ProviderAI appointment automationDirect integration with WhatsApp Business APIMulti-tenant SaaS in production
AI-assisted tax diagnostic application
Frontend · MVP · AI
AI-assisted tax diagnostic application

The initial diagnostic process consumed a massive amount of time from the consulting team due to repetitive interviews and manual analysis. I developed a web application that guides the user through dynamic questionnaires and generates automated tax diagnostics using specialized rules and artificial intelligence to interpret answers and generate actionable recommendations. The firm significantly reduced the time spent on initial diagnostics, increased its operational capacity, and served more clients without expanding its team.

+500 diagnostics generated+16 weekly hours saved✓ MVP developed in 2 weeks
Athena Home | Enterprise Ecommerce platform
Ecommerce · Full-Stack · Backend · DevOps
Athena Home | Enterprise Ecommerce platform

Athena Home needed to build its entire technological infrastructure from scratch to operate a modern ecommerce with centralized and scalable processes. As co-founder and CTO, I developed the public storefront, the administrative panel, and a backend platform capable of managing products, inventory, orders, payments, and critical automations using Stripe and webhooks. The platform currently operates with real sales, making it possible to manage the entire commercial operation from a single system and laying the technological foundation for the company's future growth.

✓ Ecommerce operating in production✓ Real sales processing✓ Centralized operation✓ Architecture ready to scale

How I can help with your project

I have participated in the entire development cycle: architecture design, feature implementation, cloud deployment, and maintenance of applications used by real customers.

New feature development

Implementation of complete modules on top of existing applications or growing products.

Fast integration with existing codebasesMaintainable and easy-to-extend codeBusiness goal-oriented delivery
Backend and business logic

Design and implementation of APIs, authentication, payments, integrations, and critical processes.

Scalable architectures with NestJSIntegration with external servicesSecurity and access control
Dashboards and internal systems

Administrative tools for operations, sales, inventory, and user management.

Optimized interfaces for internal teamsAutomation of repetitive processesClear visualization of operational data
Infrastructure and deployment

Configuration of cloud environments, Docker containers, and deployment automation.

Automated CI/CDContainer-based infrastructureCost and maintenance optimization

Technologies I specialize in

TypeScriptNode.jsNestJSReactNext.jsTailwind CSS + Shadcn/UIPostgresPrisma ORMTypeORMDockerKubernetesGoogle Cloud

My latest content on YouTube

Contact

Need help with a project?

Book a 20-minute meeting where we can get to know each other and understand your project's needs.

ivnoffdev@gmail.com

+52 56 2010 1896