{"id":3629526,"url":"https://alion.io/job/arena-front-end-engineer-brazil","title":"Front end Engineer [Brazil]","company":{"id":1768233,"name":"Arena","domain":"arena.im","url":"https://alion.io/company/arena-im","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":75,"open_postings":5,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-11-08T05:47:12Z"}},"role":"Frontend","role_family":"Frontend","seniority":"middle","employment_type":null,"work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Brazil"],"countries":["BR"],"hiring_countries":["BR"],"hiring_countries_total":1,"salary":null,"salary_estimate":null,"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"CI/CD","optional":false},{"name":"Firebase","optional":false},{"name":"Firestore","optional":false},{"name":"Git","optional":false},{"name":"GitHub Actions","optional":false},{"name":"GraphQL","optional":false},{"name":"Multimodal AI","optional":false},{"name":"Next.js","optional":false},{"name":"React.js","optional":false},{"name":"Rest API","optional":false},{"name":"TypeScript","optional":false},{"name":"WebSockets","optional":false},{"name":"Figma","optional":true},{"name":"JavaScript","optional":true},{"name":"Node JS","optional":true},{"name":"PHP","optional":true},{"name":"styled-components","optional":true},{"name":"Turborepo","optional":true},{"name":"Web Components","optional":true},{"name":"Webpack","optional":true},{"name":"WordPress","optional":true}],"status":"live","first_seen_at":"2025-02-06T16:11:51Z","employer_posted_date":"2026-10-06","last_verified_at":"2026-11-08T17:08:22Z","board_verified":true,"closed_at":null,"days_open":640,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":639},"description":"About Arena:\nArena is a startup created in Silicon Valley with a mission to build communities for creators, publishers and brands with the power of AI. Companies using Arena include Disney, Reuters, Fox, Red Bull and NFL. We have +2,000 customers in 150 countries, with +50M users engaging and having conversations on Arena every month.\nWe are a Series A company backed by top-tier investors such as CRV, Redpoint and Craft Ventures. Arena offers a unique work environment and the chance to collaborate with diverse teammates across multiple countries, with a culture of ownership, autonomy, and high performance.\nArena is expanding its AI product portfolio with MyAvatar.AI, a multimodal platform that enables users to create intelligent, personalized AI avatars through voice, video, and conversational interfaces.\nSometimes you're stuck in a job that doesn't make sense, working with outdated code and a stack that holds you back. If you love a good challenge, enjoy solving meaningful problems, and want to be part of a fast-growing AI startup in Silicon Valley - then Arena is the company you're looking for.\n\nAbout the Role:\nWe’re looking for a Frontend Engineer to build fast, scalable, and high-performance web experiences across Arena’s products.\nYou’ll work closely with Product, Design, and Engineering to build AI-powered features, improve existing applications, and solve complex frontend and performance challenges. You’ll work alongside experienced engineers and have a direct impact on products used by millions of users.\nWhat you will be doing:\nBuild and maintain high-performance frontend applications using React, Next.js, and TypeScript.\nDevelop real-time experiences and interfaces using WebSockets and GraphQL.\nBuild reusable, scalable, and maintainable UI components and frontend architecture.\nIntegrate frontend applications with APIs, AI services, and backend systems.\nOptimize application performance, scalability, and reliability across high-traffic environments.\nCollaborate with Product and Design to turn product requirements and UI/UX concepts into polished experiences.\nDebug complex frontend and production issues and implement robust solutions.\nContribute to AI-powered features, including conversational experiences and AI Agents.\nMust-Have Experience:\n3+ years of professional frontend engineering experience.\nStrong experience with TypeScript and React.\nProduction experience with Next.js.\nExperience working with GraphQL and REST APIs.\nExperience building real-time applications using WebSockets.\nExperience with Git and collaborative software development workflows\nExperience working in monorepo environments.\nStrong problem-solving skills and attention to performance, scalability, and code quality.\nFluent English\nOur Stack:\nFrontend: React.js, Next.js, TypeScript.\nUI: Web Components, CSS, Styled Components.\nAPIs & Real-Time: GraphQL, REST, WebSockets.\nBuild & Architecture: Monorepo, Turborepo, Webpack.\nInfrastructure & CI/CD: GitHub Actions, Firebase, Firestore.\nDesign: Figma.\nNice-to-Have Experience:\nStyled Components or other CSS-in-JS solutions.\nTurborepo, Webpack, or similar frontend tooling.\nGitHub Actions and CI/CD workflows.\nNode.js and backend development.\nFirebase and Firestore.\nExperience building browser extensions or WordPress plugins.\nExperience with AI-powered products, conversational interfaces, or AI Agents.\nExample Projects You’ll Be Working on:\nImplement applications using Next.js framework\nBuild a real-time chat that can scale to 1M simultaneous users\nDevelop plugins for WordPress and Google Chrome\nImplement high-performance widgets\nBuild a JavaScript SDK \nBuild and design AI features and AI agents\nWe also have some sweet perks like:\nBe a part of the team in Silicon Valley and join a global team.\nA team of exceptional engineers leading the cutting-edge AI Agents.\nCompetitive salary package & benefits.\n4 weeks of paid time-off.\nLearning and Development budget.\nKey moment to join Arena in terms of growth and opportunities.\nAbility to put your stamp on real-world AI applications that serve millions of users.\nFast-learning environment, entrepreneurial and strong team spirit.\nMultiple nationalities: cosmopolite & multi-cultural mindset.\nOur people matter, work-life balance is important at 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