All Projects
A comprehensive collection of my professional work and contributions across various companies and technologies.
Trade Republic
Banking Backoffice Platform
Led the development and long-term ownership of Trade Republic’s core Banking Backoffice platform, achieving a 70% reduction in infrastructure and operational costs, eliminating production crashes entirely (from 50+ to zero), and speeding up CI/CD pipelines by 5×, significantly improving developer productivity and deployment velocity.
The platform is a mission-critical system powering all back-office banking operations, designed with fine-grained permissions, full auditability, and support for multiple autonomous user roles. I delivered features end-to-end across frontend, backend, and infrastructure, while introducing full observability and monitoring to improve reliability and incident response.
In parallel, I built internal self-service tools that automated workflows for more than 10 cross-functional teams, enabling independent operation at scale, reducing manual processes, and improving overall system resilience and operational efficiency.
- Node.js Vue Terraform Kubernetes Prometheus
Check24
Insurance Center Conversational AI Chatbot
Delivered an intelligent conversational AI system for Check24’s insurance center that made complex insurance operations accessible through natural language, removing friction from customer interactions.
The engagement spanned the full product lifecycle, from initial conception and requirements gathering through implementation and deployment. The conversational AI system, built with the Rasa NLP framework, accurately understood user intents and provided contextual responses for insurance-related queries, handling the nuanced language customers naturally use when discussing policies.
The full-stack implementation combined a Node.js backend for intent processing and API integrations with a React frontend for seamless user experience. Deep integration with Check24’s existing insurance platform enabled users to check policies, update information, and access services through conversation, eliminating form navigation entirely.
The chatbot created an alternative interface that improved accessibility and customer satisfaction while maintaining full platform functionality. By meeting customers in a more natural interaction model, it reduced support burden and increased engagement with self-service operations.
- Node.js React Rasa Chatbot NLP
TalkTelecom
Data Mining & Billing Strategy Platform
Delivered an innovative data manipulation platform that transformed TalkTelecom’s billing operations, enabling teams to create custom billing strategies by unifying data from CRM systems, external databases, and file uploads into a single powerful interface.
The solution centered on a flexible data ingestion engine that processed heterogeneous data sources and transformed them into a unified format. The full-stack application combined intuitive frontend design with robust backend data processing pipelines, making complex operations accessible to business users.
Advanced search and analytics capabilities powered by Elasticsearch enabled real-time querying and aggregation of billing data at scale. The interface, built with Angular Material, empowered non-technical users to configure sophisticated charging strategies without writing code, democratizing access to what previously required engineering resources.
The impact was immediate and substantial: billing sector productivity increased by 300%, operational costs dropped significantly through automation of manual processes, and business teams gained the autonomy to iterate on billing strategies without technical bottlenecks.
- Node.js Elasticsearch ASP.NET Core Angular C#
ESX for Omint Health Insurance
Healthcare Cost Management System
Delivered a critical healthcare cost management platform for Omint, a major Brazilian health insurance company, under aggressive timeline constraints that demanded both speed and precision.
The full-stack solution, built with ASP.NET Core and React, provided comprehensive tracking, analysis, and optimization of home healthcare service costs. Real-time reporting features gave stakeholders immediate visibility into expense patterns and budget allocation, transforming reactive cost management into proactive financial planning.
The engagement required rapid execution while maintaining quality standards. Agile development practices ensured continuous alignment with business needs, while knowledge transfer to the client’s team built internal capability for ongoing system evolution.
The platform launched in one and a half weeks, eight times faster than the original two-month estimate. This accelerated delivery immediately enabled better financial control and data-driven decision-making for home healthcare services, while establishing a foundation for long-term cost optimization.
- ASP.NET Core React C# Healthcare
Atacado.com
Shopify Payment Gateway Integration
Delivered a custom payment gateway integration system for Atacado.com, a B2B clothing marketplace, that simultaneously improved unit economics and enhanced seller experience through advanced payment splitting and comprehensive analytics.
The solution connected Shopify’s e-commerce platform with Moip’s payment gateway through a sophisticated integration layer. Complex payment splitting logic enabled the marketplace’s multi-seller model while reducing transaction costs by 3% per sale, a direct improvement to the platform’s margins that compounded with every transaction.
A comprehensive seller dashboard provided real-time access to sales metrics, order status tracking, and financial reports. The intuitive interface transformed seller operations, enabling merchants to monitor performance and manage their business without requiring platform support.
Deployed on Azure cloud infrastructure, the system scaled reliably with marketplace growth. By processing all transactions through a single unified system, it delivered transparency and control for both the platform operator and individual sellers, reducing friction and building trust in the marketplace ecosystem.
- Node.js ASP.NET MVC Azure Shopify E-commerce