SmartDev is a leading provider of global software solutions. SmartDev was established in 2014 and is a wholly owned subsidiary of Verysell Technologies Group (Switzerland).
SmartDev combines renowned Swiss quality with the Vietnamese passion to provide excellence and value. SmartDev brings together smart people both internally and externally to create partnerships that push boundaries and challenge the status quo.
As part of SmartDev’s aggressive growth plan we are looking to expand our development team.
Location: 6th floor, Thong Tan Xa Building, 81 Quang Trung, Hai Chau, Da Nang, Vietnam;
5th floor, Zodiac Building, 19 Duy Tan, Cau Giay, Ha Noi, Vietnam
We are seeking a highly skilled Senior Drupal Developer (freelancer remote) to lead the architecture, development, and maintenance of our enterprise-level web applications. In this role, you will be responsible for building robust custom modules, designing complex content structures, and integrating third-party services.
Development & Architecture
- Architect and develop complex, scalable Drupal solutions (Drupal 10/11) using PHP, MySQL, and Symfony components.
- Write clean, maintainable, and well-documented custom modules and themes following Drupal coding standards.
- Design and implement RESTful APIs or GraphQL interfaces for decoupled (headless) applications or third-party integrations.
- Manage configuration management workflows (CMI) and complex data migrations.
Performance & Security
- Optimize application performance using caching strategies (Varnish, Redis/Memcached) and code profiling tools (Xdebug, Blackfire).
- Conduct security audits and apply patches to ensure compliance with industry security standards.
- Monitor application health and troubleshoot critical issues in production environments.
Leadership & Collaboration
- Lead code reviews and enforce version control best practices using Git.
- Collaborate with UX/UI designers, Project Managers, and Front-end Developers to deliver high-quality user experiences.
- Mentor junior and mid-level developers, providing technical guidance and constructive feedback.
- Participate in Agile ceremonies (Sprint Planning, Daily Stand-ups, Retrospectives).
Must-Haves
- 5+ years of backend web development experience, with at least 3+ years dedicated to Drupal 9/10/11.
- Deep understanding of the Drupal API, including the Form API, Entity API, Render API, and Plugin system.
- Proficiency in Object-Oriented PHP and the Symfony framework.
- Solid experience with Composer, Drush, and Git workflows.
- Proficiency in database management (MySQL/MariaDB) and query optimization.
- Experience with front-end technologies (HTML5, CSS3/SASS, JavaScript/ES6) and Twig templating.
Nice-to-Haves
- Acquia Certified Developer (Backend or Grand Master) certification.
- Experience with Decoupled (Headless) Drupal using React, Vue.js, or Next.js.
- Familiarity with DevOps practices: Docker (Lando/DDEV), Jenkins, GitHub Actions, or CI/CD pipelines.
- Experience working with Acquia Cloud or Pantheon hosting environments.
Soft Skills
- Strong problem-solving skills and an analytical mindset.
- Excellent written and verbal communication skills.
- Ability to translate technical concepts to non-technical stakeholders.
BENEFITS
- Competitive salary + 13th salary bonus/
- Up to 20 annual leave days
- Yearly career/performance evolution
- Premium Extra Healthcare Insurance
- Great activities (Team Building, Company Trip, etc.)
Top Skills
What We Do
Founded in 1990, Verysell Group is a renowned global software development company, headquartered in Switzerland. We offer various services from staff augmentation to building bespoke software solutions for industries such as Fintech, Payment tech & InsurTech. Central to our business is the offshore development center (ODC) SmartDev LLC in Vietnam where we develop software for external customers and our in-house products such as VeryPay - a mobile money payment platform. Our offices are located in 8 cities on 4 continents. This allows us to cater to a diverse clientele, including start-ups, scale-ups, and large global enterprises. Our family of brands SmartDev, VeryPay, Smart81 & VeryPlay Studio helps us focus on specific market segments and client types. SmartDev is a broad base outsourcing partner for enterprise clients worldwide. Recognized as the Winner of SME100® Fast Moving Companies, SmartDev specializes in building FinTech apps, insurance software, and more. Smart81 is a subsidiary of SmartDev and is instrumental in accelerating growth for start-ups and scale-ups by advising, collaborating, and crafting enterprise-level technology through our offices in California, Singapore, and London – the world's leading centers of startup economy. VeryPay is a mobile payments technology provider offering technology solutions for African mobile network operators, while VeryPlay Studio serves as a full-cycle game developer, merging Switzerland's quality standards with Asia's production expertise. The Applied AI Lab, another innovative extension of the Verysell Group, showcases our commitment to AI revolution by providing high-level consulting services, aiming to integrate AI functionalities in business, thereby enhancing productivity and expanding product offerings. AI Lab is also an in-house center of excellence in this field with a mandate for AI transformation.









