{"id":3443878,"url":"https://alion.io/job/symphonyai-principal-ui-engineer-frontend-development","title":"Principal UI Engineer - Frontend Development","company":{"id":8763,"name":"SymphonyAI","domain":"symphonyai.com","url":"https://alion.io/company/symphonyai","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Frontend","role_family":"Frontend","seniority":"lead","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Bengaluru, India"],"countries":["IN"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":10,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Angular","optional":false},{"name":"Cursor","optional":false},{"name":"JavaScript","optional":false},{"name":"NgRx","optional":false},{"name":"PrimeNG","optional":false},{"name":"React.js","optional":false},{"name":"Redux","optional":false},{"name":"RxJS","optional":false},{"name":"Sass","optional":false},{"name":"State Management","optional":false},{"name":"TypeScript","optional":false},{"name":"Zustand","optional":false}],"status":"live","first_seen_at":"2026-10-29T05:10:37Z","employer_posted_date":null,"last_verified_at":"2026-10-29T05:10:37Z","board_verified":false,"closed_at":null,"days_open":4,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":4},"description":"About the job : \n\nSymphonyAI is looking for a Principal UI Engineer to lead the design and delivery of high-quality, scalable web frontends. You will be hands-on, work across Angular and React, drive UI architecture and performance, and accelerate delivery using modern AI-assisted engineering tools.\n\nResponsibilities : \n\n- Own UI architecture : Define frontend architecture, patterns, and standards for large-scale Angular/React applications.\n\n- Hands-on delivery : Build and ship complex features end-to-end (UI, state, routing, API integration, testing).\n\n- Component systems : Develop and maintain reusable component libraries/design systems.\n\n- Performance & quality : Improve Core Web Vitals, bundle size, rendering performance, accessibility, and reliability.\n\n- Mentorship & technical leadership : Guide engineers through reviews, pairing, best practices, and incident learnings.\n\n- AI-enabled engineering : Use AI tools to speed up coding, refactoring, test generation, debugging, and documentation.\n\n- Cross-functional collaboration : Partner with Product, Design, Backend, and QA to deliver cohesive 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