Staff Software Engineer, Backend (Search)

LINE MAN Wongnai is one of Thailand's fastest-growing technology companies, operating three core business groups: On-demand Services under the LINE MAN brand, the leader in food delivery, mart delivery, messenger, transportation, and telepharmacy; Merchant Digital Solutions under the Wongnai brand, the leading provider of POS and digital solutions for merchant management, beauty, and wellness clinics; and Pay & Financial Services under the LINE Pay brand, an integrated online and offline payment platform.

As a data and AI-driven company, our mission is to Digitalize Everyday Life Services, guided by our core values: Innovate Faster, Go Deeper, and Respect Everyone. Together, we power a digital ecosystem that serves 10 million users, 520,000 active online and offline merchants, and over 290,000 active riders and drivers nationwide.

Join us, and you'll work alongside talented, driven people who take real ownership from day one. Here, your work won't just move a project forward, it'll shape how millions of people live every day.

We are looking for a Staff Software Engineer to join our team. You will play a key role in building a food and restaurant discovery in our LINE MAN and Wongnai application, facilitating and cultivating the engineer team to be a high performance team.

Please visit our engineering blog if you’d like to learn more.

• Search Auto-Completion “เจอของที่ใช่” แม้ยังพิมพ์ไม่จบ
• จาก Keyword Search สู่ AI-Driven Search | LINE MAN Search

• Working with talented members from a multi-national team (The primary communication language is English) to build our next-generation discovery, recommendation, and personalization search system.
• Develop and research state-of-the-art algorithms in the fields of relevant search using cutting-edge technology.
• Working with the engineering and infrastructure team in building and scaling reliable back-end search services, as well as constantly monitoring and improving the availability, scalability, latency, and efficiency of our platform.
• Guide and mentor the technical design (coding pattern, algorithms, architecture) by making suggestions from a different angle of view for a proposed engineer’s design (at LMWN we use the RFC for formal technical review process).
• Coach the engineer to create task breakdown and implementation plans. Also balancing between business impact, quality, and efficiency (technical development and engineering effort, understanding what is ‘good enough).
• Design and plan the rollout in the production environment with minimum risk and the fastest impact. We normally run experiments (A/B testing) for the evaluation of each feature.
• Work closely with the product team to see the opportunities in the future and plan our technical design to support them.

• 7+ years of experience in the software development cycle.
• Proficient in at least one programming language for backend services, preferably Go or Java.
• Strong background knowledge in Elasticsearch.
• Ability to establish a high-performance and self-organized work team with suitable processes and procedures.
• Experience with AWS and/or GCP, SQL and/or NoSQL databases, technologies like RabbitMQ, Docker, Kubernetes, and Solr.
• Growth mindset and willingness to learn and teach from others.
• Strong problem-solving and analytical skills in business requirements and be able to suggest technical solutions or recommended workarounds.
• Strong leadership and coaching skills.
• Strong and clear written and verbal communication skills in both Thai and English.

• Understanding of basic concepts of data science and/or machine learning concepts.
• Have a curious and innovative attitude.
• Good command of English: TOEIC 800 is a plus.
• Good command of Chinese: HSK4 is a plus.