Location
In office (Ho Chi Minh City)
Confirmed on the employer's own hiring board on Oct 16, 2026. First seen by Alion on Oct 16, 2026. Zalo scores A on the Alion truth index.
Overview
Company
Impact
Profile match
Zalo is a Vietnamese messaging and internet platform based in Ho Chi Minh City, part of the VNG Corporation group, whose app is used by more than 80 million people in Vietnam for chat, calls, official accounts, payments and mini apps. Launched in 2012 by founder Vuong Quang Khai, the Zalo group also runs the Zing MP3 music service, Zalo Video, the Kiki Auto voice assistant, Zalo AI language models, the Adtima advertising unit and Zalo Business Solutions cloud products. It hires product specialists and owners, data engineers and analysts, AI researchers, system engineers, ads policy and content moderation staff and customer service personnel.
Join our Backend Development team, which builds and operates the backend infrastructure behind our internal engineering ecosystem: Distributed databases, message queues, API gateways and other platform services.
Rust is our primary direction for new infrastructure, while C++ powers our existing legacy systems. Prior Rust/C++ experience is a plus. Strong fundamentals and a learning mindset matter more.
What you will do
- Monitor, operate and troubleshoot backend systems;
- Develop and optimize backend infrastructure components in Rust. Maintain and debug existing C++ services under guidance;
- Write clean, testable code. Participate in code reviews, testing and design discussions;
- Improve observability, reliability and efficiency using logs, metrics and monitoring tools;
- Support internal teams on connectivity, latency, throughput and integration issues, and drive issues to resolution;
- Maintain technical documentation, runbooks and troubleshooting guides.
What you need
- Degree in Computer Science or a related field;
- Proficiency in at least one language (Rust, C++, Python), with solid data structures and algorithms;
- Understanding of networking (TCP/IP, HTTP, DNS), Linux, concurrency and basic distributed systems concepts;
- Strong willingness to learn Rust and work with C++, plus interest in performance and how systems work under the hood;
- Strong communication skills and critical thinking abilities.
Nice to Have: Familiarity with multithreading, async programming, profiling or low-level debugging
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