Seymen K. Email & Phone Number

İstanbul, Türkiye

- Developed a fast, scalable property management system.- Enhanced old code and added features to web apps.- Established Azure pipelines to streamline cloud deployments.- Used Vite.js/Webpack to cut bundle sizes and improve the developer experience.- Improved the bundler to accelerate builds and enhance development.

Istanbul, Turkey

-Created a full-stack architecture with NestJS, React, PostgreSQL, and TypeORM. Used the repository pattern in NestJS. - Made a custom email manager using React for templates and Postmark for delivery, supported by NestJS helpers. - Implemented auth flows with Passport.js and developed custom endpoint guard decorators. - Built a reusable pagination feature with TypeORM and vanilla SQL to enhance data navigation. - Integrated multilingual support across the app, including email templates, using i18next. -Created complex migrations with TypeORM and optimized the database with advanced entity relationships. - Implemented automated and scheduled Cron jobs. - Integrated analytics tools like Amplitude, PostHog, and Google Tag Manager for insights. Used Sentry for error handling. - Contributed to a payment and subscription system with Iyzico. - Implemented an AWS S3 image flow using AWS S3, Multer, Sharp, and Jimp. Also, made a system for uploading and retrieving translation data. - I developed custom global NestJS interceptors, filters, and handlers. They standardize app behavior and error management. - Managed CI/CD pipelines with GitHub Actions, Contabo for VPS, PM2, Nginx, and Docker for smooth deployment and scaling. - Tested with Jest for both NestJS and React to ensure high code quality. - Used Kanban and Scrum to manage workflows and deliver features on time.

Lyon

- Contributed to developing an Electron.js kiosk application.- Managed real-time data with WebSockets and Microsoft SignalR.- Created generic layouts that adapt during data updates.- Transferred the kiosk app to React Native Expo for cross-platform use.

İzmir, Türkiye

AI Based Learning Platform (Web & Mobile) - Created a monorepo structure using Vercel’s Turborepo tool. It streamlined development and improved scalability. - Implemented automated jobs with Supabase functions and PostgreSQL Trigger Functions. - Built an AI learning platform with Next.js, Azure, OpenAI, Supabase, and Prisma to improve its features. - Implemented real-time voice conversations with AI. I used EleveLabs and WebAudioContext for audio processing. - Engineered speech analysis with Microsoft Cognitive Services Speech SDK. I added speech recognition and text-to-speech features. - Designed a subscription flow using Stripe for user transactions and account management.- Applied audio visualization techniques and used web sockets for real-time audio streaming. - I created a mobile app using React Native with Ignite, Expo, and Supabase. - I used Expo-AV to manage AI chats on mobile devices. It improved the user experience. Vehicle Tracking App (Internal Use) - Developed a high-performance vehicle tracking system. Used React, Tailwind, Mantine, Vite.js, and Google Maps. It was optimized for 1-second data updates. - I added Google Maps clusterers and custom items on map. This enhanced map interactions and data visualization. - Engineered business logic based on location data for accurate tracking. - Rendered custom assets and indicators on the map for an engaging user experience. - Designed role-based authentication to secure access and tailor user experiences. - Implemented complex data grids based on location data for detailed, interactive views.

Liverpool, İngiltere, Birleşik Krallık

DigitalWisersDigitalWisers is a platform that helps established communities connect members and businesses to create value. It offers tools for keeping members engaged, creating and sharing content, communicating effectively, and organizing events. The platform also includes perks for members and uses AI to match people with job opportunities.

Liverpool, İngiltere, Birleşik Krallık

WrepingA project is an online book writing and publishing platform designed to prepare books for publishing.Backend: AdonisJsFrontend: React.js, TypescriptTesting: PHPUnit, DuskUI frameworks: TailwindCSSCloud: ContaboCI/CD Tools: TravisCIDatabase/Cache: MongoDB, RedisMonitoring: Horizon, Telescope, RaygunIntegration/API: PostmarkSmarthronlineSmarthronline offers the possibility to connect candidates in Logistics with hiring companies via an online platform. The entire selection of candidates, any mutual communication, negotiations on conditions of a future agreement etc. is performed between the candidates.Backend: LaravelFrontend: Vue.js (Vuex, Nuxt), JavascriptTesting: PHPUnit, DuskUI frameworks: TailwindCSSCloud: AWS, Azure, Elastic searchCI/CD Tools: Github ActionsDatabase/Cache: PostgreSQL, RedisMonitoring: Horizon, TelescopeIntegration/API: Postmark, Twilio, Iyzic