Sr. Frontend Engineer

Get AI-powered advice on this job and more exclusive features. About the Role We're looking for an exceptional Sr. Frontend Engineer to lead the design, development, and optimization of user-facing features across Trimbox's web and mobile surfaces. You will own core UI flows, build clean reusable components, and deliver performant experiences that make inbox management fast, intuitive, and delightful. This is a hands‑on, high‑impact role ideal for someone who loves building beautiful interfaces, optimizing performance, and shipping features that users can feel instantly. You'll collaborate closely with backend, product, and design to bring new capabilities to market through rapid iterations and continuous deployment. What You'll Do Architect, build, and maintain frontend features for inbox cleanup, subscription management, and workflow automation Build scalable, reusable UI components and design systems Implement responsive layouts and accessibility best practices across devices Optimize rendering performance, page speed, code splitting, and asset delivery Monitor frontend performance, error tracking, and user session metrics Identify frontend bottlenecks and drive improvements to user experience and conversion Implement features for web‑first experiences with support for React Native mobile surfaces Collaborate with backend engineers to integrate REST APIs and real‑time features Work in 2‑week sprints with CI/CD and code review best practices Contribute to frontend architecture decisions, tooling, state management, and build pipelines Maintain a high standard of code quality, documentation, and testing What You Bring 6+ years of frontend engineering experience, ideally in consumer apps, SaaS, or browser‑based utilities Expert‑level proficiency in React Native + TypeScript (core to this role) Production experience with React Native or ReactJS (mobile required, web preferred) Strong understanding of JavaScript fundamentals, modern frontend patterns, and component architecture Experience integrating UI with APIs (REST, real‑time, or event‑based) Familiarity with mobile UI patterns on Android/iOS (React Native) Experience optimizing performance, accessibility, and rendering efficiency Experience with visual debugging, error monitoring, and analytics tools (e.g., Sentry, LogRocket, PostHog, Amplitude, Mixpanel) Preferred Experience designing and implementing responsive inbox or email‑related UI (e.g., email parsing UI, subscription cards, filtering, or lists) Experience building mobile apps with Expo platform Experience working in Node‑based frontend build environments (Next.js, Vite, Webpack) Experience building Chrome or browser extensions Familiarity with Firebase for auth, messaging, or real‑time features Nice to Have Experience with feature flags, experimentation, or A/B testing AI‑assisted development (GitHub Copilot, Cursor, etc.) Exposure to design systems, storybook libraries, or component frameworks Experience with user session replay, heatmaps, or performance logging How You Work Take ownership of features end‑to‑end, from concept to production Move quickly and thrive in high‑velocity environments Communicate clearly in asynchronous teams Care deeply about UI quality and user experience, not just code Push for clarity, simplicity, and constant improvement Alignment with our core values: Accountable: You take ownership of your responsibilities, demonstrating trustworthiness and self‑discipline. You are consistent in your work, transparent in your actions, and communicate effectively. You follow through on commitments and strive for continuous improvement. Action‑driven: Identify what is most important, agree on scope, execute in a timely manner, and drive the greatest impact. You take initiative, roll up your sleeves, and get things done. Caring: You genuinely care about yourself and others, our business and craft, our mission and vision, and are passionate in heart and mind. You understand the importance of our team and strive to create a positive, supportive work environment. Curious: You focus on the 'why,' learn and expand your knowledge, explore new ideas, and generally make things better. You're a lifelong learner with a thirst for knowledge and a constant desire to improve. Thorough: Your work is thoughtful, impactful, timely, accurate, and complete. You pay attention to detail, are meticulous, and ensure quality work and compliance. We Believe in the Following Workplace Norms Allow OKRs to Guide Us Assume Positive Intent Agree to Disagree & Commit Set New Precedents Accomplish More with Less Hold Yourself & Others to High Standards Speak Up Be Resourceful Follow the 80/20 Rule What We Are Offering We are a 100% remote‑first, global company. A competitive compensation package. We offer generous perks & benefits to team members. Participation in the Company’s equity plan (for full‑time team members). We provide individual bonuses in accordance with our Company Bonus Program. Work with energetic, passionate, and results‑driven people. Celebrate team members’ personal and work milestones. Remote social activities, including virtual coffee buddies. Bonusly – We use Bonusly as a way to recognize and reward team members for their hard work and commitment. Weekly Wednesday Get Stuff Done Days (No Meetings). Open PTO, generous Company Holidays, and Wellness Days (for full‑time team members). If we just described you and your perfect role, we'd love to talk with you. We have a lot to accomplish this year and look forward to making headway and creating success together Mode Mobile does not accept/pay fees for unsolicited resumes from third‑party agencies/vendors. Our company is an Equal Employment Opportunity (EEO) employer. We are committed to providing a work environment free of discrimination and harassment. All employment decisions are made without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other characteristic protected by law. We celebrate diversity and strive to create an inclusive environment for all team members. #J-18808-Ljbffr