JOBSEARCHER

Senior Frontend Engineer

Kastel GroupNew York, NYApril 25th, 2026
Senior Frontend EngineerAbout the CompanyHigh-growth B2B SaaS company transforming how businesses leverage customer advocacy in the buying journeyWorks with leading enterprise SaaS organizations across multiple categoriesBacked by top-tier venture investors behind some of the most successful modern technology companiesFounded by experienced operators with a track record of building and scaling category-defining platformsNYC-based, with an in-office, high-performance cultureCompensation & BenefitsBase Salary: $200K – $240KEquity: Competitive equity packageWork Model: Hybrid (4 days in-office in NYC, Wednesdays work-from-home)Visa Sponsorship: Not availableMission & Market OpportunitySolving a critical gap in B2B buying: enabling companies to activate and scale authentic customer voicesPositioned to disrupt legacy software, services, and labor-heavy solutionsOperating in a rapidly evolving, AI-accelerated market where differentiation is increasingly difficultCore ValuesDazzle Customers – Deliver exceptional product experiencesDeliver Results – Focus on outcomes and measurable impactDemand Excellence – Maintain a high performance bar across all functionsRole OverviewSenior Frontend Engineer with full ownership of frontend architecture and user experienceReports directly to Head of EngineeringHigh visibility role with direct collaboration across leadership, product, and customersResponsible for shaping how the product looks, feels, and performs across all user-facing surfacesKey ResponsibilitiesFrontend Ownership & ArchitectureEstablish and scale frontend best practices, standards, and frameworksBuild and maintain a robust component library and design systemImplement cross-browser testing and performance optimization strategiesLeverage AI tooling to accelerate frontend development and collaborationProduct Development & ExecutionShip production-ready features on a weekly cadenceOwn the full development lifecycle: PRD → API design → UI → testing → deploymentBuild reusable, scalable components across web app and embedded surfacesContribute to key roadmap initiatives (analytics dashboard, chatbot interface, user management system)Customer Experience & Product QualityOptimize frontend performance and responsivenessPartner closely with product design to elevate UX/UI qualityAct as a thought partner in product decisions impacting user experienceTech StackTypeScriptReactGraphQLTailwind CSSFigmaStorybookRequired Experience5+ years as a frontend or frontend-leaning full-stack engineerDemonstrated ownership of frontend systems and architecture3+ years at a high-growth, VC-backed startup or scale-up (Series B or later)Experience translating Figma designs into production-ready featuresTechnical SkillsStrong proficiency in TypeScript, React, and GraphQLFamiliarity with Tailwind CSS and StorybookExperience building scalable UI systems and reusable componentsOwnership Signals (Required)Clear evidence of high ownership and initiative, such as:Building products or systems from 0 → 1Leading projects or teamsMaintaining open-source contributionsAdditional IndicatorsPersonal website or side projects showcasing frontend expertisePassion for product quality, performance, and user experienceHiring DetailsLocation: New York CityHiring Count: 1 headcountIdeal Candidate ProfileProduct-minded engineer who cares deeply about user experienceThrives in fast-paced, high-accountability environmentsComfortable operating with autonomy and high expectationsStrong collaborator across engineering, design, and leadership