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Senior Frontend Developer


Published: Fri, 20 Jun 2025 16:51:19 GMT

Position: Senior Frontend Developer

Location: Remote or Warsaw/Kyiv

Company Overview:

We are a mobile and web application (www.ohayu.com) that simplifies the process of purchasing mobile data packages while traveling. Our innovative use of eSIM technology allows for seamless internet usage at lower rates than traditional roaming, eliminating the need for physical SIM cards.

Job Responsibilities:

– Lead the frontend architecture and scalability of our product
– Collaborate with the design team to create high-quality, responsive user interfaces
– Optimize website performance and accessibility across devices and browsers
– Implement changes to support A/B testing and continuous UX improvement
– Mentor and support other frontend developers, conducting code reviews and sharing knowledge

Qualifications:

– 7+ years of JavaScript experience
– 5+ years of React experience
– 4+ years of Next.js experience
– 3+ years of Typescript experience
– Proficiency with Vite ecosystem and modern build tools
– Knowledge of Crash Analysis Tools and Production Management
– Ability to work independently and take ownership of tasks
– Strong mentoring and brainstorming skills
– Intermediate level of English (all work communication in English)

Nice to Have:

– Familiarity with styled-components or other CSS-in-JS libraries

Why Join Us:

– Opportunity to work on a product-driven application with a focus on UX/UI
– Startup environment that values your ideas and encourages innovation
– Be part of a groundbreaking venture in the eSIM technology field, shaping the future of connectivity and mobile devices

Join us in reshaping the future of connectivity.
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