Senior Frontend Developer

Description We are looking for a Senior Frontend Developer to help build the next generation of our leading cybersecurity product. In this role you will take ownership of end-to-end user experience development using React, building scalable, high-performance applications within a modern, cloud-based, multi-tenant SaaS architecture. You will improve existing features, contribute to UI architecture and testing strategy, and play a direct role in shaping system performance, code quality, and overall engineering standards. Working closely with Product Managers, Backend Developers, and QA Engineers, you will deliver impactful features in a dynamic R&D environment, leverage AI-assisted development tools, and help drive continuous improvement across the platform. What You'll Do: Develop complex React-based frontend components within a scalable SaaS product Contribute to frontend architecture and scalable infrastructure design Write high-performance, maintainable, and reusable code Design and implement UI integration and component tests using modern testing frameworks Collaborate closely with Product Managers, Backend Engineers, and QA teams Participate in limited backend development using Java or Go Work in an Agile environment with CI/CD, TDD/BDD, and Extreme Programming practices Meet performance goals and product KPIs Requirements What Makes You a Great Fit: 7+ years of experience building React-based applications, with strong knowledge of software architecture, design patterns, and scalable front-end infrastructure. Hands-on experience using AI-assisted development tools (e.g., Cursor, GitHub Copilot, or similar) as part of the coding workflow — including code generation, refactoring, and documentation. Experience writing UI integration and component tests, using modern testing frameworks and best practices. Proven ability to write high-performance, maintainable, and reusable code, with attention to developer experience and long-term code health. Nginx experience - an advantage. Node.js experience - an advantage. Go or Java experience - an advantage. Background in authentication and authorization flows, including modern protocols - an advantage. Strong understanding of Cyber Security domain - an advantage. About PlainID PlainID is the only Agentic Identity Platform at the core of an organization's identity stack. It secures the entire AI flow, inputs and outputs, data retrieval, and MCP tools. By enforcing Zero Standing Privileges, PlainID ensures just in time access is granted and automatically adjusts as context changes. Every decision is evaluated dynamically, securing applications, APIs, data, and agentic AI workflows end to end. One place. Full clarity. Real-time control. Trusted by Fortune 500 organizations to secure access for millions of identities, PlainID helps enterprises scale authorization with confidence in an AI-driven world. Why PlainID? Real traction, real customers. Fortune 2000 companies including SAP, Accenture, EY, Cisco, City bank, The World Bank.. trust us with their most critical authorization challenges. Category leadership. We're not just playing in authorization - we're defining it. Named as an Outperformer by industry analysts alongside Google Cloud, SailPoint, and Ping Identity. Strategic partnerships that matter. SAP didn't just invest - they embedded our technology as an OEM component in their Customer Data Cloud platform. That's the kind of validation that opens doors. Backed by the best. We've raised $100M from Insight Partners (led our $75M Series C), SAP, Viola Ventures, and other top-tier investors who believe in our vision. Founded by security veterans. Our co-founders Oren Ohayon Harel (CEO) and Gal Helemski (CTO/CPO) come from deep financial services and IDF cybersecurity backgrounds. They've been in the trenches and built the solution they wished existed. Prime location. Our Tel Aviv office - right in the heart of the city's business district. Steps from train station, surrounded by the energy of Israel's tech ecosystem.