What you will do

• Planning and conducting a wide range of quality control tasks for Zalo Ads, Adtima, and other related products; 
• Developing and maintaining test cases, creating reusable test templates, creating test data and thoroughly documenting defects detected during test execution; 
• Cooperating with both Product Owners and Development Teams to clarify business requirements, and technical designs and to assist each other in defect management; 
• Team-working on several projects, and reporting to your line manager;
• Led team, involved in hiring, training, and mentoring members to ensure high-quality output of the team at all times;
• Propose and lead team initiatives to improve the test team's knowledge, performance, and skills;
• Reporting tasks and initiatives plan to line manager.

What you will need

• Knowledge of commonly-used concepts, practices, and procedures for software & system testing; 
• Experience in testing products on Web, WAP, Mobile (Android & iOS);
• Experience in automated testing is a plus;
• Ability to understand configuration and setup of equipment for testing and development; 
• Ability to make a test plan, test strategy, and test cases with technical testing; 
• Attention to detail and accuracy; 
• Strong ownership in work; 
• Good time management; 
• Being a fast learner and eager to learn, research, and improve your professional knowledge of QA/QC; 
• Adapting quickly to a new working environment, being willing to innovate working ways and share ideas with others.

What you will do

• Building recommendation systems to improve User Engagement in Zalo. We test every change in model and logic carefully by an A/B Testing Framework to make sure they have significant improvements on Zalo;
• Working with Mobile Devs and Backend Devs to provide stability for your Data Science solution. Making a good model is hard, but making a good scalability model for 100M users in Zalo is even more challenging. You must think like a scientist and code like an engineer;
• Working with Product Owner to identify the opportunities how Data can improve User Engagement, User Experience in Zalo. If you have a good idea, you have a chance to make it real;
• Perform analyses to understand user behaviors and find actionable insights for current and future data-focused innovation. This can involve a host of different techniques such as user profiling, graph analysis, predictive modeling;
• Building a scalable recommendation engine for distributing content to users to ensure content diversity, accuracy and satisfaction.

What you will need

• Bachelor or higher in Computer Science, Statistics, or a related field;
• Knowledge of Hadoop programming environments (e.g. Spark), Deep Learning Framework (Pytorch, Tensorflow);
• Have work experience with large amounts of real data, preferably experience with building and maintaining scalable data pipelines;
• Understanding of applied statistics including sampling approaches, causal modeling, and data mining techniques;
• Good communication and interpersonal skills, storytelling with data, e.g., ability to communicate data science concepts and analysis results to both technical and non-technical audiences;
• Having a deep knowledge in Computer Vision, NLP, Knowledge Graph, Recommendation System is a plus.

Other requirements:

• Ability to translate business objectives into actionable analyses;
• Proactive thinking and ability to work independently while being a strong team player;
• Open-minded and excited to learn new things. Have strong opinions but are willing to change with new data;
• We hope you will fit well with our team’s culture:
• Strong work ethic: All of us believe in our work’s ability to change Vietnamese lives and consequently work hard, work smart;
• Good team members: We care and watch out for each other. We’re humble individually and go after big goals together;
• Flexibility: you should be flexible in your tasks and do whatever is needed, ranging from dirty work like data cleaning to high-level work like system or algorithm design.