> Markdown version of [/jobs/ext/1999661-senior-frontend-engineer-30-000-60-000-a-year](https://www.wearedevelopers.com/jobs/ext/1999661-senior-frontend-engineer-30-000-60-000-a-year). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Frontend Engineer - $30,000 - $60,000 A Year - **Company:** Dualentry - **Location:** Madrid, Spain - **Salary:** €30,000.0 - €60,000.0 - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Next.js, Web Application Frameworks, Manual Data Entry, Postman, ReactJS, Backend, Material UI, Front End Software Development - **Published:** August 9, 2026 - **Apply:** https://www.buscojobs.com.es/senior-frontend-engineer-30-000-60-000-a-year-en-madrid-ID-365752708 ## About the Role The role is full?ownership: deploy daily, make fast decisions, and own major parts of the product UI.Where you'll create impactBuild, ship, and own major parts of the product UI in React + Next.JsDesign and optimize interactive experiences that make complex workflows simpleWork closely with product, design, and backend to ensure seamless integration and clarityHelp define our frontend system and component library as we scaleElevate the quality of the product through thoughtful detailsWhat sets you up for successHardcore work ethic and high agency5+ years of experience in frontend development with React (Next.Js a strong plus)Strong understanding of responsive UI, accessibility and usability principlesExperience building and testing APIs; comfort with HTTP, Postman, and debuggingClear product thinking, eye for polish and attention to design detailsPragmatic mindset: you move forward fastCuriosity and autonomy - you dig in, learn fast and solve problems without waitingFluent in English (C1+) with strong written and verbal communicationHow you operatePragmatic:you like to move forward and make decisions based in reality.Hard working:you work long, hard, or smart-here you choose all three.Curious:you love to learn and are highly curious about new frameworks and solutions.Fast?moving:you deploy daily, iterate quickly, and never wait for permission. ## Description Founded in ****, DualEntry is one of the world's fastest-growing AI startups.Por favor, presente su candidatura sin demora si su perfil encaja bien con este puesto, debido al alto nivel de interés.We offer an AI-native ERP that automates manual data entry for businesses of all sizes.Why this role matters nowSince starting 18 months ago, we've raised over $100 million from world?class investors and are growing fast.LocationRemote with overlap to our New York City HQ (EST).Senior Frontend EngineerYou'll build and maintain high?performance, scalable web applications that deliver seamless user experiences.The role is full?ownership: deploy daily, make fast decisions, and own major parts of the product UI.Where you'll create impactBuild, ship, and own major parts of the product UI in React + Next.JsDesign and optimize interactive experiences that make complex workflows simpleWork closely with product, design, and backend to ensure seamless integration and clarityHelp define our frontend system and component library as we scaleElevate the quality of the product through thoughtful detailsWhat sets you up for successHardcore work ethic and high agency5+ years of experience in frontend development with React (Next.Js a strong plus)Strong understanding of responsive UI, accessibility and usability principlesExperience building and testing APIs; comfort with HTTP, Postman, and debuggingClear product thinking, eye for polish and attention to design detailsPragmatic mindset: you move forward fastCuriosity and autonomy - you dig in, learn fast and solve problems without waitingFluent in English (C1+) with strong written and verbal communicationHow you operatePragmatic:you like to move forward and make decisions based in reality.Hard working:you work long, hard, or smart-here you choose all three.Curious:you love to learn and are highly curious about new frameworks and solutions.Fast?moving:you deploy daily, iterate quickly, and never wait for permission.xhfqzwm BenefitsSignificant equity ownership in an AI?powered ERP companyEarly?stage role with high autonomy and real long?term upsideHigh speed culture and high?trust environment with high expectationsEquity: $30,000 - $60,000 USDContract type: B2BRemote?first team27 PTO days (including public holidays)Visa sponsorship option for relocation to NYC within 2+ yearsLearning & development budget for courses, certifications, and language learningWork?from?home or co?working space support for setup, internet, and phoneWe hire the best, expect the best, and give you the masterclass of your career.#J-*****-Ljbffr ## Related Videos - [Watch Tests Go Brrrr! 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