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PROJECT
PORTFOLIO

> Real-world solutions built with modern technologies and best practices.
> From healthcare platforms to fintech systems and security infrastructure.

HEALTHCARE PATIENT MONITORING

HEALTHCARE • MOBILE

SITUATION & TASK

Major healthcare SaaS provider needed cross-platform mobile applications for real-time patient monitoring and visit scheduling to improve clinical workflow efficiency and reduce missed appointments.

ACTION

Built native mobile applications for Android and iOS using Apache Cordova for cross-platform deployment. Implemented real-time patient data synchronization, push notifications for appointments, and offline-first architecture for reliable healthcare environments.

RESULT

Delivered applications serving 10,000+ healthcare professionals with 99.9% uptime. Reduced missed appointments by 35% and improved patient engagement through real-time monitoring capabilities.

TECH STACK:

Apache Cordova, JavaScript, REST APIs, Push Notifications, SQLite, Healthcare APIs

ML TRADING PLATFORM

FINTECH • WEB

SITUATION & TASK

Pan-European stock exchange required a high-performance frontend for ML-powered automatic trading application with strict SEO requirements and comprehensive testing to ensure financial compliance and reduce regression time.

ACTION

Designed and implemented Next.js frontend from scratch with server-side rendering (SSR) for optimal SEO. Built event-driven backend modules and established comprehensive testing strategy using Playwright and Vitest with 85% integration and 90% unit test coverage.

RESULT

Reduced regression testing time from 5 days to 2 days while maintaining 99.99% uptime for critical trading operations. Achieved perfect SEO scores and enabled real-time trading decisions for institutional clients.

TECH STACK:

Next.js, TypeScript, Playwright, Vitest, Event-driven Architecture, SSR, Financial APIs

SCALABLE ORDER DISPATCHING

E-COMMERCE • CLOUD

SITUATION & TASK

Global D2C platform needed a distributed order dispatching system to handle high transaction volumes across multiple sales channels (Shopify, Amazon FBA/FBM) with seamless third-party integrations.

ACTION

Architected event-driven system using AWS EventBridge, Lambda, and DynamoDB. Built React Native mobile app for order tracking and Vue.js backoffice with Quasar UI. Integrated Stripe payments, logistics providers, and ERP systems with fault-tolerant event processing.

RESULT

Improved processing efficiency by 30% and reduced system latency by 50%. Successfully handled 100,000+ daily orders with 99.9% reliability and seamless cross-platform order tracking for end users.

TECH STACK:

AWS EventBridge, Lambda, DynamoDB, React Native, Vue.js, Quasar, Stripe, Shopify APIs

PKI SECURITY INFRASTRUCTURE

SECURITY • ENTERPRISE

SITUATION & TASK

Europe's largest Qualified Trust Service Provider required robust PKI microservices for certificate management, signature verification, and a certificate blacklist provisioning system with comprehensive testing.

ACTION

Developed Quarkus microservice architecture for PKI operations including certificate issuance, revocation, and OCSP responses. Built Golang Lambda backend with Angular frontend for blacklist management. Implemented 300+ unit and integration tests with trust engine for compliance enforcement.

RESULT

Achieved 99.99% system reliability with comprehensive test coverage. Successfully processed millions of certificate operations while maintaining strict security compliance and enabling real-time certificate validation.

TECH STACK:

Quarkus, Go, Angular, AWS Lambda, PKI, OCSP, Microservices, Security Compliance

HEALTHCARE PREVENTION PLATFORM

HEALTHCARE • FULL-STACK

SITUATION & TASK

Healthcare company needed a complete prevention application from scratch, including doctor backoffice for patient management and patient frontend for health surveys and prevention path tracking.

ACTION

Built full-stack application using NestJS with Moleculer for microservices communication and Vue.js for responsive frontend. Implemented secure patient data handling, survey engine, prevention algorithms, and real-time doctor-patient communication features.

RESULT

Delivered GDPR-compliant platform serving 5,000+ patients with personalized prevention paths. Improved patient engagement by 60% and enabled doctors to manage prevention programs efficiently.

TECH STACK:

NestJS, Moleculer, Vue.js, PostgreSQL, GDPR Compliance, Healthcare APIs, Microservices

IOT ANALYTICS PLATFORM

IOT • DATA

SITUATION & TASK

Healthcare startup required IoT platform for Industry 4.0 medical devices with real-time data analysis, certification workflows, and interactive data visualizations for medical professionals.

ACTION

Developed React frontend with Redux and RxJS for real-time data streams. Built NestJS backend with PostgreSQL for data persistence, Elasticsearch for search, and InfluxDB for time-series data. Implemented Apache Kafka for event streaming and D3.js for interactive visualizations.

RESULT

Successfully processed 1M+ IoT data points daily with sub-second latency. Enabled real-time monitoring of medical devices and provided actionable insights through interactive dashboards for healthcare providers.

TECH STACK:

React, Redux, RxJS, NestJS, PostgreSQL, Elasticsearch, InfluxDB, Kafka, D3.js, Docker

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