{"id":14180,"url":"https://alion.io/job/seven-ai-senior-frontend-engineer","title":"Senior Frontend Engineer","company":{"id":11741,"name":"7AI","domain":"7ai.com","url":"https://alion.io/company/7ai","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"A","score":88,"open_postings":39,"ghost_share":0,"stale_share":0.462,"repost_share":0,"time_to_fill_p50_days":46,"computed_at":"2026-10-29T05:49:05Z"}},"role":"Frontend","role_family":"Frontend","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Boston, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":180000,"max":220000,"currency":"USD","period":"year","gross":null,"usd_annual":220000},"salary_estimate":null,"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"Angular","optional":false},{"name":"Cursor","optional":false},{"name":"JavaScript","optional":false},{"name":"React.js","optional":false},{"name":"SIEM","optional":false},{"name":"TypeScript","optional":false},{"name":"Vue.js","optional":false}],"status":"live","first_seen_at":"2026-05-06T01:06:22Z","employer_posted_date":"2026-05-06","last_verified_at":"2026-10-29T13:58:13Z","board_verified":true,"closed_at":null,"days_open":176,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":176},"description":"About 7AI\n7AI is the foundational AI security company. Founded in 2024 by Cybereason co-founders Lior Div and Yonatan Striem-Amit, we came out of stealth in February 2025 to take on the non-human work of the SOC. Our platform pairs a federated SIEM with AI agents that detect, investigate, respond, and hunt, plus dedicated threat hunting and threat intelligence, with humans on the loop.\nBacked by $166 million in total funding from investors including Index Ventures and Blackstone, we're building the AI foundation for security operations in the agentic era, and we're still early. That's the appeal: you'll join at a pivotal stage where your work shapes what 7AI becomes, alongside security veterans who've built this before. Our culture runs on respect, collaboration, and a shared bar for excellence, all pointed at one goal, delivering real outcomes for the customers who trust us to defend them.\nOverview\nSecurity teams won't trust an AI agent's call if they can't see how it got there, and most interfaces aren't built to make that reasoning visible. You'll design and build the user-facing components of our AI-native cloud platform, turning complex cybersecurity capabilities into interfaces people can actually use. A core part of the job is making AI decisions explainable: you'll help users understand how the system reached a conclusion, not just what it output. As a senior engineer, you'll shape our frontend architecture, mentor other engineers, and work closely with design and product.\nWhat You'll Do\nArchitect and build performant web interfaces for our AI-native cloud platform.\n\nSet frontend technical direction: choose the frameworks, libraries, and tools that keep the codebase scalable and maintainable.\n\nWork with product, design, and backend teams to turn complex cybersecurity use cases into intuitive, user-centered experiences.\n\nDefine and uphold coding standards, testing practices, and frontend architecture.\n\nOptimize performance across browsers and devices, and ensure accessibility and responsiveness.\n\nContribute to long-term engineering strategy.\n\nGive technical feedback on UX designs and feature requirements.\n\nWhat We're Looking For\n7+ years of professional frontend engineering experience, with a track record of building and scaling production-grade web applications.\n\nDeep expertise in React (or similar frameworks such as Vue or Angular) and strong proficiency in JavaScript and TypeScript.\n\nStrong experience with frontend architecture, APIs, and performance optimization.\n\nFamiliarity with cloud-based environments and integrating with backend APIs and services.\n\nComfortable working with AI coding tools such as Cursor.\n\nExperience with UI/UX best practices, responsive design, and accessibility standards.\n\nAbility to make sound technical decisions in a fast-changing environment and communicate trade-offs clearly.\n\nBachelor's degree in Computer Science or a related field, or equivalent practical experience.\n\nA collaborative, proactive mindset with strong problem-solving and communication 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