Plesr Sebastian

Plesr Sebastian 📍 Prague, Czechia 📧-💬 WhatsApp: - Summary Results-driven Senior Software Engineer with over 8 years of experience architecting, developing, and deploying web applications using modern full-stack technologies including React, Next.js, Vue, Angular, Node.js, Express, NestJS, Django, Laravel, .NET, PHP, Python, and TypeScript. Specialized in building scalable solutions enhanced with AI/ML capabilities, RESTful APIs, and cloudbased infrastructure. Proficient in translating complex business logic into maintainable code, integrating machine learning services into web applications, and leading teams in agile environments. Strong focus on clean architecture, performance optimization, cross-functional collaboration, and seamless frontend/backend/API integration. Passionate about innovation and intelligent automation in the fintech, healthcare, logistics, and SaaS sectors. Experience Trango Tech – Senior Software Engineer (AI-Focused) 📍 New York, USA | 🗓️ Jan 2021 – Jun 2025      Led development of intelligent web applications using React, Next.js, Node.js, and NestJS with AI-powered recommendation engines and analytics dashboards. Integrated Python-based machine learning APIs into front-end dashboards for real-time predictions and visual feedback. Developed REST/GraphQL APIs and microservices that connected seamlessly to third-party ML tools and internal models. Optimized UI performance using SSR with Next.js, resulting in 40% faster load times and higher Lighthouse scores. Collaborated with data science teams to incorporate AI models into production, using Docker and scalable deployment pipelines on AWS. ITC Infotech – Senior Full Stack Engineer 📍 Princeton, NJ | 🗓️ Jun 2018 – Dec 2020   Built robust AI-enhanced dashboards for internal operations using Angular, Django, and PostgreSQL. Designed reusable UI components and micro-interactions driven by real-time analytics and MLbased inputs.   Created scalable backend APIs using Express, Python, and Redis to handle high-throughput data processing. Developed integration logic for predictive analytics modules and anomaly detection tools using external Python ML endpoints. Rascasone – Full Stack Developer 📍 Prague, Czechia | 🗓️ May 2017 – Jun 2018    Delivered end-to-end features using Vue.js, Laravel, and Python, including AI-driven form validation and smart input prediction systems. Designed and implemented REST APIs and service workers to support AI workflows including text summarization and image classification integrations. Supported backend API orchestration and frontend data visualization layers for AI analytics dashboards. Projects DDSHARED – HIPAA-Compliant AI-Integrated Data Platform 🌐 https://ddshared.com    Implemented secure file sharing, AI-powered document classification, and real-time notifications. Built role-based access and document expiration logic using React, Node.js, and AWS S3. Used AI document tagging to auto-label and organize incoming medical files securely. DelveHealth – AI Data Analytics Platform for Healthcare 🌐 https://delvehealth.com   Integrated AI models to provide predictive analytics and patient risk scoring dashboards using Vue.js, Laravel, and WebSockets. Worked closely with clinical data teams to ensure model accuracy and live reporting capabilities across multiple user roles. Dental 3D Services – Online Medical Viewer 🌐 http://dental3dservices.us   Developed DICOM viewer and real-time sharing functionality using Next.js, AWS, and Firebase. Added smart filtering/search powered by AI-based tagging of DICOM images for faster case navigation. Cayuse Research Platform 🌐 https://cayuse.com 2   Integrated machine learning-assisted researcher recommendations and smart task automation. Developed AI-enhanced dashboards for administrative users using React, Node.js, and BackboneJS. BlindTools 🌐 https://blind.tools/   Built internal quoting and scheduling system for commercial blind installers. Added AI modules to predict project delivery windows and material requirements. Education Charles University Prague Bachelor’s Degree in Computer Science 📅 April 2013 – May 2017 Skills Front-End React, Next.js, Angular, Vue.js, Nuxt.js, Bootstrap, Tailwind CSS, Figma-to-code, SSR, Accessibility Back-End Node.js, Express, NestJS, Django, Laravel, .NET, Flask, REST, GraphQL, WebSockets, API Gateway AI & Data Integration Python, Scikit-learn, TensorFlow, Pandas, Flask API integration, ML model consumption, AI-assisted UI features DevOps & Tools Docker, GitHub Actions, AWS (S3, EC2, Lambda, Route53), Firebase, GCP, CI/CD, Redis Databases PostgreSQL, MySQL, MongoDB, DynamoDB, ElasticSearch Testing & QA Jest, Cypress, Selenium, Postman, Chrome DevTools, Unit & E2E automation Project & Collaboration Slack, Jira, Trello, Notion, Zoom, Agile/Scrum, GitHub, GitLab 3