Karol

Having conducted a comprehensive audit of the current solution, I delved deep into analyzing existing functionalities to craft an actionable improvement plan. My expertise not only facilitated the design and development of novel functions but also fostered a collaborative environment. Working hand in hand with the Product Owner, CTO, and the backend team, we ensured a synergized approach to our solution enhancement endeavors.

- Developed a new Nest.js backend with GraphQL microservices to replace existing Rails API - Built a new Next.js web app from scratch, incorporating features present in the mobile app to ensure feature parity - Developed and added several features to the React Native app, such as a user endorsement system, communities and a new messaging system - Created AppCenter & fastlane pipelines to automate the deployment process of the mobile application - Wrote unit & e2e tests for both backend and frontend - Experience with debugging and troubleshooting production React Native applications (Sentry.io)

- Developed the frontend layer of React Native & Next.js applications - Operated within a rapidly evolving startup atmosphere while consistently delivering code within challenging project timelines - Experience identifying and resolving React performance bottlenecks, optimizing applications for rerenders and correct usage of data fetching paradigms - Worked in the Scrum methodology: Sprints, Demo, Retrospective, collaboration with the Project Owner and other Stakeholders. - Utilized tools: JIRA, Confluence, Figma, Github.

- Implemented several features on both frontend (Next.js) & backend (RailsAPI), such as messaging system, user's online statuses, third party authentication with different providers (Facebook, Google) - Utilized responsive web design techniques to ensure web app works smoothly across different devices and browsers