{"id":1270727,"url":"https://alion.io/job/magmalabs-senior-software-engineer-reactjs","title":"Senior Software Engineer (ReactJS)","company":{"id":2206163,"name":"MagmaLabs","domain":"magmalabs.io","url":"https://alion.io/company/magmalabs-io","size_band":null,"is_staffing_agency":false,"employer_type":"staffing","is_intermediary":false,"listed_via":null,"ats_vendor":"BambooHR","truth_index":{"grade":"B","score":75,"open_postings":4,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-09-29T05:45:00Z"}},"role":"Frontend","role_family":"Frontend","seniority":"senior","employment_type":"contractor","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"CI/CD","optional":false},{"name":"CSS Modules","optional":false},{"name":"Docker","optional":false},{"name":"GCP","optional":false},{"name":"Git","optional":false},{"name":"GraphQL","optional":false},{"name":"JavaScript","optional":false},{"name":"Jest","optional":false},{"name":"Kanban","optional":false},{"name":"Node JS","optional":false},{"name":"React.js","optional":false},{"name":"Redux","optional":false},{"name":"Scrum","optional":false},{"name":"State Management","optional":false},{"name":"styled-components","optional":false},{"name":"TypeScript","optional":false},{"name":"Zustand","optional":false},{"name":"Kubernetes","optional":true},{"name":"Next.js","optional":true}],"status":"live","first_seen_at":"2026-03-03T00:00:00Z","employer_posted_date":"2026-03-03","last_verified_at":"2026-09-29T20:21:56Z","board_verified":true,"closed_at":null,"days_open":211,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":210},"description":"Senior Software Engineer (ReactJS)\nImportant: This role is open only to candidates currently living in Mexico or Latin America. Applications from other regions will not be considered.\nJoin MagmaLabs, a leading provider of expert software engineers dedicated to helping companies achieve their goals across diverse and impactful industries. We are actively seeking a seasoned Senior Software Engineer (ReactJS) to join our fully remote team.\nIn this pivotal role, you will apply your expertise in modern frontend and full-stack development to build scalable, high-performance web applications. You will collaborate with clients across healthtech, e-commerce, fintech, and other innovative sectors, delivering robust and intuitive user experiences powered by ReactJS and modern web technologies.\nYou will play a key role in designing, developing, and maintaining scalable frontend architectures while contributing to backend integrations and full-stack solutions that directly impact business success.\nAbout the Role\nAre you a seasoned Senior Software Engineer (ReactJS) passionate about building modern, scalable, and high-performance web applications?\nJoin our fully remote team and take ownership of designing and developing sophisticated frontend systems while contributing to full-stack architectures. You will shape the future of our products by making key architectural decisions that enhance user experience, performance, accessibility, and long-term scalability.\nYou will drive engineering best practices, ensuring our SaaS platforms, e-commerce systems, and high-traffic applications maintain exceptional quality, performance, and maintainability.\nIf you thrive on solving complex problems using ReactJS, modern JavaScript/TypeScript ecosystems, and cloud-native technologies, we want to hear from you.\nResponsibilities\nLead the architectural design, development, and continuous improvement of scalable frontend applications using ReactJS and TypeScript.\nDesign and implement reusable, maintainable, and testable UI components following modern design patterns.\nCollaborate on full-stack implementations, integrating frontend applications with RESTful and/or GraphQL APIs.\nEnsure optimal application performance, accessibility (WCAG standards), and cross-browser compatibility.\nContribute to backend integrations and server-side logic (Node.js or other backend technologies as required).\nOptimize application performance using modern techniques such as code splitting, lazy loading, memoization, and performance monitoring.\nEnsure code quality through automated testing (Jest, React Testing Library, Cypress or similar).\nParticipate in code reviews, maintain high engineering standards, and mentor junior engineers.\nCollaborate closely with product managers, designers, and cross-functional teams to translate business requirements into technical solutions.\nContribute to DevOps practices including CI/CD pipelines, Docker-based workflows, and cloud deployments (AWS, GCP, or Azure).\nMaintain clear and comprehensive technical documentation.\nProactively identify technical debt and lead refactoring initiatives to improve scalability and maintainability.\nRequirements\nMinimum of 7 years of software development experience, with at least 4-5 years focused extensively on ReactJS and modern frontend ecosystems.\nStrong proficiency in JavaScript (ES6+) and TypeScript.\nDeep understanding of ReactJS fundamentals, hooks, state management patterns, and component-driven architecture.\nExperience with state management solutions (Redux, Zustand, Context API, or similar).\nSolid understanding of frontend architecture patterns and scalable project structure.\nExperience integrating with RESTful and/or GraphQL APIs.\nWorking knowledge of backend technologies (Node.js preferred) and full-stack development principles.\nStrong understanding of HTML5, CSS3, responsive design, and modern styling solutions (Styled Components, TailwindCSS, CSS Modules, etc.).\nExperience with version control systems (Git) and collaborative workflows.\nFamiliarity with automated testing strategies and testing frameworks.\nExperience working in Agile environments (Scrum, Kanban, etc.).\nStrong problem-solving skills and the ability to work independently in a remote-first environment.\nExcellent English communication skills (written and spoken).\nProven ability to collaborate effectively across time zones and distributed teams.\nBonus Points If You Have\nExperience with Next.js or other React-based frameworks.\nKnowledge of server-side rendering (SSR) and static site generation (SSG).\nExperience with microfrontend architectures.\nFamiliarity with cloud platforms (AWS, GCP, Azure).\nExperience with Docker, Kubernetes, or infrastructure-as-code.\nUnderstanding of performance monitoring tools and observability practices.\nExposure to design systems and scalable component libraries.\nExperience contributing to technical leadership or architectural decisions in high-growth environments.\nAbout Us\nWe are a team of innovative software professionals dedicated to delivering high-quality solutions across diverse industries. With a proven track record of success, we prioritize excellence, creativity, and the continuous growth of our team members.\nWe are committed to professional development, mentorship, and fostering a culture of technical excellence. Join us to work on impactful projects, collaborate with talented engineers, and advance your career as a Senior Software Engineer (ReactJS).","description_format":"text","description_chars":5468,"description_truncated":false,"requirements":{"experience_years_min":7,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"English","level":"Upper-Intermediate (B2)","optional":false}]},"benefits":["Professional development"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["IT Outsourcing & Dedicated Teams","Custom Software Development"],"lifecycle":[{"event":"open","at":"2026-09-25T23:59:51Z"}],"liveness":{"score":5,"band":"cold","label":"Long shot","p_open":1,"p_active":0.187,"p_room":0.28,"age_days":210,"expected_fill_days":23,"reasons":["conf:2","win:tail","crowd:"],"computed_at":"2026-09-29T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/magmalabs-senior-software-engineer-reactjs","json_url":"https://alion.io/job/magmalabs-senior-software-engineer-reactjs.json","meta":{"generated_at":"2026-09-30T00:31:48Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":315,"day_limit":5000,"remaining_today":4685,"minute_limit":60,"resets_at":"2026-10-01T00:00:00Z"}}}