Senior Middle Backend Engineer PHP Symfony Node.js Keystone AI 4504

Top 3 Reasons To Join Us Salary, bonus & benefits that reward your impact Work with big-name global clients AI-first: Work with AI at the core The Job Role Overview We are looking for a skilled Backend Engineer with PHP (Symfony) expertise and working experience in Node.js to join our distributed, international team. Our current backend infrastructure is built on PHP, but we have an active roadmap to migrate toward Node.js. You will work alongside an embedded Node.js expert, helping maintain and develop our existing PHP ecosystem while actively contributing to the Node.js migration as it progresses. This is a fully backend-focused role requiring seamless daily communication in English. Key Responsibilities Feature Development & Maintenance: Design, build, and maintain high-quality backend services and APIs using PHP (Symfony). Support the Migration Roadmap: Actively contribute to migrating legacy PHP services over to Node.js, collaborating closely with the team’s dedicated Node.js engineer. Code Quality & Architecture: Write clean, well-tested, and maintainable code. Participate in code reviews to ensure high technical standards across both stacks. Cross-Functional Collaboration: Work within a distributed, international team of developers, product managers, and QA engineers to deliver impactful features. System Optimization: Troubleshoot, debug, and optimize backend performance and database queries to ensure scalability. Your Skills and Experience Technical Skills PHP Expertise: Professional experience with PHP, specifically using the Symfony framework. Node.js Experience: Working knowledge of Node.js. You don't need to lead the migration, but you must be strong enough to pick up tickets, write backend logic, and contribute to the Node.js codebase. Database Management: Proficiency with relational databases (e.g., PostgreSQL, MySQL) and understanding of data modeling. API Design: Experience designing and implementing robust RESTful APIs. Modern DevOps Tools: Familiarity with Git, Docker, and CI/CD pipelines. Soft Skills & Core Traits Good English: You will be collaborating daily in English with a global team. Adaptability: A transition mindset - someone who is comfortable bridging the gap between two different backend ecosystems. Remote Work Champion: Proven ability to work autonomously and effectively within a distributed, asynchronous team environment. Why You'll Love Working Here 🏆 Join Vietnam’s Best IT Company - Keystone AI Vietnam (formerly NFQ Vietnam) was recognized by ITViec for 8 consecutive years, including 2 successive years as the Winner. Work with some of the best minds in the industry and be part of a company that’s redefining how businesses scale through technology. 🌍 Career Growth & Leadership Development - Work closely with our leadership team, gain mentorship from experienced executives, and have direct exposure to high-level strategic decisions. Your growth is limitless, as long as you’re ready to step up, opportunities will always be there for you. 🚀 AI-First Engineering & Strategic Consulting - Our engineering culture integrates AI as a core driver of design, development, and optimization - not an add-on. As a forward-thinking consultancy, we go beyond traditional engineering, combining technical excellence with a strategic mindset to deliver transformative solutions for ambitious businesses. 💰 Competitive Compensation - We believe great talent deserves great rewards. Expect an attractive salary, performance-based bonuses, and a benefits package that reflects your impact. We value talent over salary budgets - exceptional contributions deserve exceptional rewards. ✨ And Many More Benefits to Explore! But most importantly, a healthy work-life balance and an environment where you can thrive professionally and personally. Including: Performance bonus of up to 2 months’ salary. Performance review twice a year, so your growth is recognized and rewarded. Premium healthcare for you, plus an annual health check. 15 days of annual leave. Full salary during probation. Hybrid working for real flexibility. Monthly Happy Hour and Community Tech activities. Work on global projects as part of an innovation team that shapes ideas for the hi-tech world. Diverse training programs to keep you growing. Working time: Monday – Friday (9 AM – 6 PM) Location : Ho Chi Minh Office: Unit No.PF-08 on Podium Floor, Sapphire 2 tower, 92 Nguyen Huu Canh Street, Thanh My Tay Ward, Ho Chi Minh City, Vietnam. Da Nang Office: 23rd Floor, G8 Golden Building, 65 Hai Phong, Hai Chau Ward, Da Nang City, Vietnam. Remote Work: Candidates based in Hanoi or Can Tho are welcome to work remotely.