Staff/Lead Software Engineer (Search)

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About LINE MAN Wongnai

LINE MAN Wongnai (LMWN) is Thailand’s Leading On-Demand Delivery and Lifestyle e-Commerce platform services. We build technology to help Thai people live better, to empower all local businesses by creating an end-to-end food ecosystem through our channel LINE MAN and Wongnai. Connected consumers, riders, and local businesses and improved the daily life of all parties with restaurants nationwide. And because we are local, we provide the deepest variety and services that are tailor-made for Thai people.


The search team at LMWN is building the next-generation of recommendations and personalized to provide the best in class to the merchants and users. We are using modern technologies like machine learning to increase the conversion rate. Our mission is to provide state-of-the-art food and restaurant discovery for users to our merchants.


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.

What you’ll Do:

  • 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.

What you’ll Need:

  • 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.

It’d be Great if you have: (If any) 

  • 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.
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Benefits & Perks
Flexible hours that suit your pace
Work from home or anywhere
MacBook provided for everyone
No cap on your annual leave
LINE MAN Services Coupon
Barista service available daily
Afterwork beer available daily
Yearly company outing trip
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