Senior Frontend Developer

About the Role We're looking for a senior frontend developer to take ownership of developing ITOC360's web application. The application covers a broad surface spanning the entire incident lifecycle: real-time alert and incident screens, on-call schedules, an escalation rule designer, role-based authorization, and subscription management. What You'll Do Take technical ownership of the web application; drive architectural decisions and the delivery process. Develop the shared component layer and design system. Build end-to-end for critical flows (authorization, subscription, incident acknowledgment). Develop real-time interfaces and live data streams. Mentor team members and contribute to code reviews. Provide technical guidance for mobile app (Expo / React Native) development. What We're Looking For 5+ years of experience with production React/Next.js applications; hands-on experience with App Router and Server Components on real projects. Deep TypeScript proficiency; commitment to type safety as a team standard. Experience writing tests and proficiency with modern testing tools. Experience building a design system / shared component library. Mentoring and code review experience. Nice to Have React Native / Expo experience. Accessibility and i18n practice. B2B SaaS product background. Working model and benefits A hybrid model: work from our Istanbul headquarters or remotely, whichever works best for you Perks for birthdays and other special occasions A meal allowance On-site gym access Private health insurance