Daniel S.

- Lead development of a production-grade React Native (TypeScript) mobile application delivering real-time hormone insights - Architect and implement backend services using TypeScript and Postgres, supporting secure data ingestion, processing, and analytics - Own technical architecture decisions across mobile and backend, ensuring scalability, performance, and maintainability - Design and optimize relational database schemas and queries in Postgres - Implement CI/CD pipelines using GitHub Actions and manage infrastructure with GCP and Terraform - Contribute to infrastructure, monitoring, logging, auditing, and security best practices - Collaborate cross-functionally with CTO and data science teams to translate biological signal processing into scalable product features - Operate in a high-growth startup environment with full-stack ownership and rapid iteration cycles

- Contributed to the development of a React Native mobile app, serving a growing user base. - Played a significant role in implementing critical features for well-being services, including seamless device health data integration with third-party providers for real-time synchronization. - Developed and maintained custom components, enhancing UI/UX and simplifying implementation for developers across multiple projects. - Collaborated closely with cross-functional teams, including designers, product managers, and backend engineers, to deliver innovative solutions aligned with business goals. - Introduced advanced testing strategies and wrote comprehensive tests to improve reliability and maintainability, significantly reducing bugs in production. Achievements: - Developed and launched a new health data tracking product, adding significant value for customers by expanding the app’s offerings and improving user engagement. - Resolved critical bugs across various services, including claims, Therapy, Pharmacy, and Telemedicine, contributing to a smoother and more intuitive user experience. - Improved customer satisfaction by enhancing app performance and stability, ensuring a consistent and engaging experience across all features.

- Contributed to the development of a React Native mobile app, a web-based React application, and a Content Management System (CMS). - Designed and implemented a robust backend system using .NET C# MVC with a clean architecture and an entity framework code-first approach, enabling the storage and management of clinical content. - Spearheaded the automation of the deployment process through Infrastructure as Code (Bicep) and established efficient CI/CD pipelines for the seamless deployment of both infrastructure and backend services. Achievements: Developed key features within the web and mobile applications, as well as the associated backend and infrastructure, which now serve approximately 2.9K users. Automated the deployment process for the backend and infrastructure using IaC and CI/CD.

Co-founded a coffee pre-ordering startup with a 3-person team - Developed an iOS and Android mobile app using React Native and Google Maps API, utilizing libraries React Navigation, Redux, and React Native Maps. - Formulated project requirements for freelancers and contributed to market research, partner acquisition, and team expansion. Achievements: Designed an impressive demo app for cafe discovery and coffee pre-orders, successfully attracted three collaborating cafes.

- Created a recipe tutorial mobile app from scratch using React Native, Expo, Redux, and React Navigation. Achievements: Created a simple application that repeated the functionality of the website

Worked on a project for an employee accounting platform using JavaScript with jQuery in frontend and Node.js with Express in Backend. - Integrated website forms with CRM and analytic system (Yandex Metrica) using their API - Built widgets for CRM. Used JavaScript to change system interface for the convenience of employees Achievements: Successfully implemented an automated bonus calculation system that is based on CRM data, improving efficiency and accuracy.

1st year completed, 2022. Relevant courses: Design and Analysis of Web-Solution Languages, Databases and Knowledge, Innovative Research on the Web

Relevant courses: Information Security, Information Technology, Development of ICT Components