Senior Software Developer (Front-end strong | ReactJS, Next.js)

SmartDev is an AI-powered software development company headquartered in Vietnam, part of the Verysell Group. We help global businesses deliver faster and build smarter — combining AI-driven development practices with deep expertise across fintech, healthcare, retail, and enterprise technology . Our team of engineers, architects, and AI specialists works across the full stack: from custom software and cloud solutions to generative AI, MLOps, and intelligent automation. At SmartDev, we believe that great architecture and AI-first thinking are a competitive advantage — and we build our teams accordingly. The company is at a pivotal point in our journey: transitioning from a pure IT outsourcing provider to an AI-enabled solutions partner . We have over 200 talented employees working both on-site and remote/hybrid at locations: Danang: 81 Quang Trung, Hai Chau 1 ward, Hai Chau District, Danang Hanoi: Zodiac building, 19 Duy Tan Street, Dich Vong Hau ward, Cau Giay District, Hanoi As a Senior Software Developer , you will architect and implement end-to-end solutions with a focus on modern front-end interfaces using Next.js . You will lead the migration and modernization of legacy systems, specifically upgrading packages and converting codebases to TypeScript . Beyond core development, you will be responsible for leading the integration of AI features into business applications and mentoring junior team members on best practices. *Remote working setting is available Responsibilities Architect and implement high-performance front-end solutions using Next.js and ReactJS . Lead development projects and architect scalable, secure full-stack solutions. Drive modernization efforts by migrating legacy 3rd party and in-house systems to TypeScript . Design modular and secure services aligned with enterprise architecture patterns. Implement AI features and develop AI test-cases to ensure safe, accurate, and ethical use. Maintain and migrate Azure infrastructure, including Azure Functions, Logic Apps, and App Services . Optimize CI/CD pipelines using Azure DevOps for automated building, testing, and deployment. Mentor team members in modern React frameworks, Node.js architecture, and Azure best practices. At least 7+ years of professional software development experience. Good English communication ability for international collaboration Strong, hands-on expertise with Next.js and NestJS as core technologies. Advanced mastery of TypeScript across frontend and backend. Experience architecting scalable full‑stack applications using modern React frameworks and Node.js. Proven Azure expertise: Azure Functions, Logic Apps, App Service... Strong background in CI/CD automation (Azure DevOps preferred). Solid understanding of secure coding, API security, cloud security, and best practices. Strong proficiency in system design, microservices, distributed systems, and API design patterns. Nice to have: NestJS as core technologies for for backend services. Experience with large-scale system modernization or cloud migration projects. Exposure to SSR, SSG, ISR strategies in Next.js. Knowledge of caching strategies (Redis, CDN, edge networks). Familiarity with containerization (Docker, Kubernetes) is a plus. Experience with infrastructure‑as‑code (Terraform, Bicep, ARM templates). Strong analytical, problem-solving, and documentation skills. BENEFITS International working environment with AI-driven strategic direction. 20 days of annual leave – Hybrid working mode. Premium healthcare package with PVI and comprehensive annual health check-ups Competitive salary & 13th salary bonus Lunch allowance to fuel your productivity. Engaging company culture with fun activities Global collaboration – Work with both Vietnamese and international colleagues.