{"id":69839,"url":"https://alion.io/job/harmonic-staff-software-engineer-frontend-platform","title":"Staff Software Engineer - Frontend Platform","company":{"id":32602,"name":"Harmonic","domain":"harmonic.ai","url":"https://alion.io/company/harmonic-ai","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":null},"role":"Frontend","role_family":"Frontend","seniority":"staff","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["New York, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":210000,"max":280000,"currency":"USD","period":"year","gross":null,"usd_annual":280000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"React.js","optional":false},{"name":"Recommender Systems","optional":false},{"name":"TypeScript","optional":false},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-08-06T13:27:22Z","employer_posted_date":"2026-08-06","last_verified_at":"2026-10-17T23:11:12Z","board_verified":true,"closed_at":null,"days_open":72,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":72},"description":"About Harmonic\nEvery day, thousands of new companies are founded. Most will never matter. A few will change everything.\nHarmonic helps startups get discovered by the investors, customers, partners, and talent that will change the trajectory of their company.\nWe are a living, breathing record of the innovation economy. Allowing our customers to understand who matters, what’s happening, where to look next, and how to make decisions.\nWe're doubling revenue annually, profitable, and backed with $30M from Craft, Floodgate, Sozo Ventures, and plenty of other industry leaders. We're committed to ensuring hundreds of billions of dollars find the right founders, so the innovations that matter most flourish. If that resonates, let's talk.\nAbout the Team\nOur Infrastructure team powers Harmonic's ability to process millions of startup signals in real-time. While Flow builds workflows and Discovery surfaces insights, Infrastructure makes it all fast, reliable, and scalable.\nWe're at an inflection point. Our frontend serves hundreds of users who run complex queries across millions of companies, build sophisticated searches, and collaborate on deal flow. As we scale, we need to transform our frontend from \"it works\" to \"it works flawlessly.\"\nOur infrastructure priorities:\nReliability. Our users depend on us for critical investment decisions. When they're analyzing deals or presenting to partners, nothing can break. We need robust error handling, graceful degradation, and resilient core flows.\n\nPerformance. Large datasets currently strain our frontend. Views with thousands of rows need to render smoothly. Complex filters need to respond quickly. Data visualizations need to load without blocking the UI.\n\nEnabling developers. Once we've nailed reliability and performance, the right infra multiplies our team's impact. Better abstractions and clearer patterns let engineers ship with confidence.\n\nWho You Are\nYou have 7+ years building frontend applications at scale.\n\nYou have deep expertise in React, TypeScript, and modern build tooling.\n\nYou have a track record of fixing production performance issues at scale.\n\nYou have strong opinions on frontend architecture, backed by real experience shipping.\n\nBonus: you've worked on discovery systems, search, or recommendation systems (CRM, ATS, or similar), or anything that helps index, structure, and surface data for use.\n\nBonus: you have exposure to venture capital, private markets, or company intelligence data.\n\nWhat You'll Do\nFix core reliability issues: error boundaries, state management, data consistency.\n\nOptimize performance: virtualization for large datasets, bundle optimization, render performance.\n\nBuild monitoring and observability to catch issues before users do.\n\nEstablish testing strategies that prevent regressions.\n\nCreate abstractions and patterns that help engineers ship faster without breaking things.\n\nDrive technical decisions and mentor the team through complex migrations.\n\nOur Stack\nInterview Process\nRecruiter Screening: 30 mins\n\nTechnical Screening (Debugging): 45 mins\n\nTechnical Screening (System Design): 45 mins\n\nJam Session: 2 hours\n\nBehavioral interviews with our Head of Engineering and CEO: 30 mins each\n\nReferences\n\nWe are an Equal Opportunity Employer committed to recruiting, hiring and promoting qualified people of all backgrounds regardless of gender, race, color, creed, national origin, religion, age, marital status, pregnancy, physical or mental disability, sexual orientation, gender identity, military or veteran status, or any other basis protected by federal, state, or local 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