Senior Frontend Engineer

About the company

Zafran Security is an AI-native continuous threat exposure management company that maps exploitability and prioritizes risk reduction across enterprise security controls.

About this role

We’re looking for an experienced Senior Frontend Engineer to join our growing team and help shape the frontend platform behind our cybersecurity product. This is a hands-on role: you’ll own significant features end-to-end and drive the frontend infrastructure, architecture, and performance that let us scale. You’ll write production code daily, set the quality bar, and work closely with designers, product managers, and backend engineers to turn complex cybersecurity data into fast, elegant, and reliable interfaces. WHAT YOU WILL DO - Collaborate with product, design, and backend teams to translate complex data into clear and actionable visual experiences. - Take part in architectural discussions and UI/UX decisions that shape the product - Develop & optimize our frontend infrastructure for handling large-scale data - Develop & optimize our frontend for supporting Product development at scale - Ensure high performance, observability, and stability on the frontend - Ensure a high-quality bar through code review, dev standards & strong testing disciplines - Stay up-to-date with modern frontend technologies and best practices. - Mentor other developers and contribute to a strong engineering culture. REQUIREMENTS - Autonomous, responsible, and self-motivated. - Excellent communication skills and a collaborative mindset. - Strong knowledge of JavaScript, TypeScript, HTML5, and CSS3. - 5+ years of professional software engineering experience, with a Frontend focus on building non-trivial production applications with React. - Proven experience on leading complex web apps at scale - Strong understanding of frontend architecture, state management, and API integration. - Familiarity with UI/UX principles and modern design systems. - Strong familiarity with browser API and tools (DevTools, DOM, network, debugging & profiling). - B.Sc http://B.Sc. in Computer Science, Engineering, or a related field, or equivalent hands-on experience. EXPERIENCE WITH ONE OR MORE OF THE FOLLOWING IS A PLUS: - Designing or owning frontend infrastructure, such as designing a FE architecture - Redux Toolkit (RTK). - Playwright for end-to-end testing — page object models, fixtures, and E2E in CI. - AI-assisted / agentic development fluency (e.g., Claude or Cursor), with a critical eye on AI-generated code and guardrails

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