Senior Front-End/Full-Stack Software Engineer

About VendrFounded in 2018, Vendr is shaping the future of software pricing transparency. Our mission is to bring transparency to software pricing, eliminating the old-world haggling and replacing it with real data - so buyers can purchase with confidence and sellers can close deals faster.With the world's most trusted SaaS pricing dataset, Vendr provides free, real-time pricing insights that empower better decisions. We're now leveraging this unique data advantage to build cutting-edge AI-native products, including Ruth, our AI-powered negotiation advisor, and PriceGraph, our pricing intelligence engine.Headquartered in Boston, MA with a second location in Charleston, SC, join Vendr and cultivate your career in a culture of growth, innovation, and kindness while collaborating with the brightest minds in tech.We're looking for a Senior Front-End/Full-Stack Software Engineer to help us build modern, intuitive software that transforms how businesses buy software. This is a high-impact role for someone who thrives in fast-moving environments, is comfortable navigating ambiguity, and loves building elegant solutions that bring cutting-edge capabilities to life.You'll work across the stack but with a strong focus on delivering exceptional frontend experiences for our products. Think conversational interfaces, real-time data visualizations, intelligent document processing UIs, and seamless integration of advanced capabilities into delightful user experiences.You WillBuild exceptional user experiences: Create polished, intuitive interfaces for advanced features including chat interfaces, document analysis tools, and intelligent data dashboards using React and modern frameworksOwn end-to-end feature delivery: Full-stack feature development, component composition, server/client rendering, and service integration—from mockup to productionIntegrate with advanced services: Connect frontend experiences to APIs, streaming responses, real-time updates, and intelligent backend systems with robust error handling and loading statesOptimize for complex interactions: Build responsive, accessible UIs that handle async operations, streaming content, file uploads, and complex state management gracefullyCollaborate on product development: Work closely with design, product, and backend engineers to translate cutting-edge capabilities into intuitive, production-ready featuresEnhance developer experience: Continuously improve our front-end systems, tooling, component libraries, and deployment workflows as our products evolveMentor and grow: Contribute to front-end best practices, code reviews, and help level up the team's product development capabilities.You Have5+ years of professional full-stack development experience in production environments, with demonstrated impact on user-facing productsExpertise with React and modern frameworks: Deep knowledge of React, including component composition, state management, and modern React patternsStrong front-end fundamentals: JavaScript/TypeScript, DOM performance, CSS architecture, responsive design, and accessibility best practicesAPI integration experience: Demonstrated experience integrating with REST APIs, GraphQL, or WebSocket APIs, including authentication, pagination, streaming, and error statesPolish and usability mindset: You care deeply about how things look and feel, not just how they work—you have a strong eye for detail and UX qualityAdvanced technology curiosity: Interest in building products with cutting-edge capabilities and willingness to learn about new integration patterns and conversational UI patternsStrong communication: Excellent collaboration skills and ability to work cross-functionally with design, product, and backend teamsOwnership mentality: History of driving technical projects from concept to launch with minimal supervisionNice To HavesRemix/React Router experience: Experience with Remix, React Router v6+, or similar full-stack React frameworksAdvanced product experience: Prior work building chat interfaces, document processing tools, or feature-rich applicationsBackend experience: Node.js, Python, PostgreSQL, or similar backend technologiesStartup experience: Experience in a fast-moving or early-stage startup environmentDesign system expertise: Experience contributing to or building design systems (Storybook, component libraries)Modern tooling: Familiarity with observability tools (Sentry, Datadog), CI/CD pipelines, and performance monitoringPerformance optimization: Experience with performance metrics, accessibility audits, or developer-experience toolingReal-time features: Experience with WebSockets, Server-Sent Events, or streaming APIsThe Tech StackFrontend: React, Remix, TypeScript, Tailwind CSS, Radix UIIntegration: OpenAI/Anthropic APIs, streaming responses, WebSocket connectionsBackend: Node.js/TypeScript, PostgreSQL, RedisInfrastructure: AWS, Docker, CI/CD pipelinesTools: GitHub, Datadog, Sentry, LinearWhat You'll Work OnYou'll contribute to building products that transform software procurement:Conversational interfaces that help buyers negotiate better dealsIntelligent document processing that extracts and validates pricing data from contractsReal-time pricing insights powered by our proprietary pricing intelligence engineInteractive dashboards that surface recommendations and market intelligenceSeamless integrations across our platform, APIs, and partner ecosystemsWhat Success Looks LikeFirst 30 days: You've shipped meaningful front-end improvements, established relationships with your team, and gained deep context on our products and tech stackFirst 90 days: You've delivered multiple features end-to-end, contributed to our component library, and identified opportunities to improve our frontend architectureFirst 6 months: You're a key contributor to major product launches, mentoring other engineers, and driving technical decisions for frontend architectureFirst year: You've shaped how we build user experiences, established patterns that scale across teams, and become a go-to person for frontend excellenceClosing: (Added by Rippling - Do not edit) The estimated base salary range for this position is $126,000 to $212,000.Vendr provides an estimate of the compensation for roles that may be hired as required by state regulations. Compensation may vary based on factors including, but not limited to, individual candidate experience, skills, and qualifications. Additionally, Vendr leverages current market data to determine compensation, therefore posted compensation figures are subject to change as new market data becomes available. The salary, other forms of compensation, and benefits information is accurate as of the date of this posting. Vendr reserves the right to modify this information at any time, subject to applicable law.At Vendr, we believe that great talent comes from a variety of backgrounds and experiences. If you’re passionate about what we do and think you’d be a great fit, we encourage you to apply, even if your experience doesn’t precisely match every requirement or if you feel as though your experience exceeds what might be listed. You might be the perfect candidate for this or other roles.Why VendrCompetitive Compensation: We offer a highly competitive salary and benefits package.Growth Opportunities: Be part of a dynamic and growing team with numerous career advancement opportunities.Innovation-Driven Culture: Work in a collaborative environment that encourages creativity and out-of-the-box thinking.Flexible Work Environment: Enjoy the convenience and work-life balance that comes with flexible/remote work.Inclusive Team: We value diversity and promote an inclusive culture where everyone can thrive.Vendr is proud to be an equal opportunity employer and is committed to maintaining a diverse and inclusive work environment. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, physical or mental disability, age, or veteran status or any other basis protected by federal, state, or local law. While we are interested in qualified applicants who are permanently eligible to work for any employer in the United States, we are unable to sponsor or take over sponsorship for employment visas at this time.It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.To all recruitment agencies: We do not accept unsolicited agency resumes and are not responsible for any fees related to unsolicited resumes.