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 100 talented employees working both on-site and remote/hybrid at locations: 

• Hanoi: Zodiac building, 19 Duy Tan Street, Dich Vong Hau ward, Cau Giay District, Hanoi 
• Danang: 81 Quang Trung, Hai Chau 1 ward, Hai Chau District, Danang

• Contribute to the full-scale modernization and renewal of a large legacy PHP application. 
• Implement improvements including mobile responsiveness, CSS enhancements, UI/UX refinements, and overall code quality upgrades. 
• Work on both backend (PHP) and frontend (Vue.js) development. 
• Experience with WordPress CMS or the Laravel framework is recommended 
• Follow a disciplined AI-driven development workflow using tools such as Claude and Codex, with strong human oversight and validation. 
• Write and improve tests, documentation, and ensure changes are stable in a complex, not-fully-documented codebase. 
• Collaborate closely with Bian (who will provide guidance) and other team members to deliver measurable improvements. 
• Identify and implement low-hanging fruit while working toward clear business metrics and ROI. 
• Participate in server migration and DevOps-related tasks when required. 
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What You Bring

• 4+ years of professional PHP development, with at least 2+ years working hands-on inside large legacy codebases.
• Solid Vue.js experience, or strong React experience and a credible plan to pick up Vue.js quickly.
• Demonstrated full-stack mindset - comfortable moving between back-end logic, front-end behaviour, and the seams between them.
• Hands-on experience using AI coding tools (Claude, Codex, or similar) in a structured way - you review, test, and own what the tool produces.
• Conversational English — you can discuss technical decisions clearly, understand written requirements, and explain your reasoning to teammates and the client's tech lead.

Bonus Points

• DevOps / SysOps experience, particularly with server migrations.
• Prior experience modernizing or untangling legacy applications end-to-end.
• WordPress CMS or Laravel framework experience.
• Strong instincts for testing strategy and documentation in large codebases.

• 20 annual leave days alongside Vietnamese public holidays
• Competitive Salary & Bonus
• Lunch Allowance
• Premium Health Care PVI
• Yearly career/ performance evalulation
• A flat organization (respect, teamwork, flexibility, transparency)
• 13th salary bonus/ competitive salary
• Cutting-edge technologies/ Scrum methodology/ Agile development
• Great activities (Team Building, Company Trip, Weekly Happy Friday, …)
• Good work environment and good colleague (parties, holidays, team building activities)