Principal Software Engineer

**Top 3 reasons to join us**:

- Young & Dynamic Environment
- Large-scale Product
- New and Challenging product

**Job description**:
As a (Senior) Principal Software Engineer - Go, you will be a key technical leader within our engineering organization, responsible for the architecture, design, and development of our core backend systems, infrastructure, and platform components. You will play a critical role in shaping the technical direction of our products, ensuring **high performance, scalability, security, and reliability**.

You will work closely with other engineers, product managers, and stakeholders to deliver robust and innovative solutions. You will be a hands-on contributor, writing code, reviewing code, and mentoring other engineers. You will be a technical expert and a role model for the engineering team, particularly in the area of Go development.

**_
Technical Leadership:_**
- Provide technical leadership and guidance to the Go engineering team.
- Define and champion best practices for Go development.
- Lead the design and architecture of complex backend systems and platform components.
- Evaluate and select appropriate technologies and tools.
- Stay up-to-date on the latest Go technologies and trends.
- Define and maintain the overall architecture for key backend systems and the platform.

**_ Hands-on Development:_**
- Write high-quality, maintainable, and well-tested Go code.
- Contribute to all stages of the software development lifecycle, from design to deployment.
- Prototype new features and technologies.

**_ Code Review and Mentorship:_**
- Conduct code reviews to ensure code quality and adherence to best practices.
- Mentor and coach other engineers, helping them grow their technical skills, particularly in Go.

**_ Performance Optimization:_**
- Identify and address performance bottlenecks in backend systems.
- Optimize system performance for speed, scalability, and resource utilization.

**_ Security:_**
- Implement secure coding practices to protect user data and prevent vulnerabilities.
- Work closely with the security team to address security concerns.

**_ Collaboration:_**
- Work closely with product managers, other engineers, and stakeholders to deliver high-quality products.
- Communicate effectively with both technical and non-technical audiences.
- Collaborate with other Principal Engineers and technical leaders across different areas (frontend, mobile, etc.).

**_ Problem Solving:_**
- Troubleshoot and resolve complex technical issues.

**Your skills and experience**:

- Bachelor's degree in Computer Science, Engineering, or a related field. Master's degree preferred.
- Minimum of 8+ years of software engineering experience, with significant experience in Go and a proven track record of technical leadership.
- Deep understanding of **Go's concurrency model** (goroutines, channels).
- Experience with building high-performance, scalable, and reliable distributed systems.
- Experience with networking knowledge such as TCP/UDP/ICMP/IP networking.
- Experience with VPN/DNS protocols such as WireGuard/PowerDNS is desirable.
- Experience with databases (SQL and NoSQL) and data modeling.
- Experience with containerization and orchestration (Docker, Kubernetes).
- Experience with cloud platforms (AWS, GCP, Azure).
- Experience with testing frameworks in Go (e.g., testing package, Ginkgo, GoConvey).
- Experience with CI/CD pipelines.
- Experience with secure coding practices.
- Experience with messaging systems (e.g., Kafka, RabbitMQ) is a strong plus.
- Experience with gRPC or other RPC frameworks is a plus.
- Experience with WebAssembly (Wasm) with Go is a plus.
- Experience working in an Agile environment.
- Experience working in Vietnam or Southeast Asia is a plus.

_ Skills:_
- Exceptional technical skills in Go development.
- Strong problem-solving and analytical abilities.
- Excellent communication and collaboration skills.
- Ability to lead and mentor other engineers.
- Passion for building high-quality, scalable, and secure systems.
- Fluency in English, Vietnamese proficiency is a plus.

**Why you'll love working here**:

- Competitive salary and benefits package.
- Opportunity to work on a product that impacts millions of users.
- A dynamic and supportive work environment.
- Premium health insurance for you and your family.
- Professional growth and development opportunities.
- Annual leave 14 days per year + 1 Birthday Leave + 1 X’Mas.
- Performance review: once per year.
- Internal training/sharing and professional Training courses.
- Team building, company trip, year end party, monthly activities.
- Devices: Macbook and screen (If needed).
- Free tea and coffee.
- Comfortable working area.
- Working hour: 9 am - 6pm from Monday to Friday.