Sunbytes - Senior Fullstack Developer (Tech Lead track)

Full Stack Developer is needed in Ho Chi Minh, Vietnam.

Client: Sunbytes

Location: Ho Chi Minh, SG, vn

Contract: Freelance

Job Description

Sunbytes is a leading Dutch-Vietnamese Tech & Talent Solutions company, seeking a Senior Fullstack Developer to join a high-impact team for our Dutch client in the IoT Security industry. This is a Technical Leadership Track position, aiming for a transition into a Tech Lead role within 12 months. The successful candidate will own the technical integrity of the project, overseeing the Dev team, QA standards, and DevOps stability to ensure the product is scalable, secure, and high-performing.

Key Responsibilities

• Technical Leadership: Lead the technical design and execution for high-complexity projects. Start with one project but provide technical guidance across different teams and projects.
• QA Strategy & Ownership: Define the end-to-end QA strategy and lead the QA team for maximum performance and resource efficiency.
• Collaboration: Partner with the PM to provide technical feasibility assessments and effort estimations.
• Team Mentorship: Guide the professional growth of developers and QA engineers, lead code reviews, and foster a high-performance engineering culture.
• Security-First Coding: Ensure all code adheres to strict cybersecurity best practices and employs robust vulnerability management for IoT Security.

Requirements

Job Requirements:

• Experience: 6+ years in Software Development, with 4+ years of deep expertise in TypeScript, Node.js (Nest.js), and React (Next.js).
• SaaS experience, microservices-oriented architecture, multi-cloud (AWS, Azure).
• Leadership Mindset: Proactive problem-solver identifying technical debt and architecture bottlenecks.
• Architecture: Proven experience with Microservices and Domain Driven Design (DDD).
• Communication: Advanced English proficiency to explain complex technical trade-offs to both the Dutch client and the local team.
• Education: Bachelor’s degree in Computer Science or related field.
• Location: Ho-Chi-Minh area-based, with flexibility for remote work (intention to spend 2 days in the office with the team).

Nice to Have:

• Experience with message brokers (NATS, Redis).
• Secure applications, key management, HSM, cryptography.
• General knowledge of CI/CD (GitHub Actions) and Cloud environments (Azure/AWS/K8S) to assist in troubleshooting high-level deployment issues.
• Experience with IoT security protocols or hardware-software integration.
• Previous experience as a Team Lead or Technical Lead in a hybrid environment.

Benefits

• Clear Career Growth: Documented path from Senior Dev to Tech Lead within 12 months.
• Global Exposure: Daily collaboration with Dutch tech experts and international teams.
• Work-Life Balance: 16 days of annual leave, 3 sick days, and 4 “Creative Days” for R&D.
• Health & Security: Premium Health Insurance 24/7 and full Social Insurance per local law.