Team: Product, Engineering & Data Science
Report to: Senior Director of Engineering
Location: Ho Chi Minh, Viet Nam
About ELSA:
ELSA is a leading innovator in English communication services, dedicated to transforming how people improve their English skills. Our flagship B2B solutions ELSA Enterprise and ELSA Schools leverage advanced AI to deliver personalized, real-time feedback on pronunciation, fluency, and communication effectiveness. ELSA empowers enterprises to enhance workplace communication and helps students build confidence and fluency through engaging, bite-sized learning experiences.
Our vision is to become the global leader in real-time, conversational English learning empowering over 1.5 billion language learners worldwide to speak with confidence, be understood, and share their stories. Join our talented team using the power of AI and proprietary speech recognition technology to make a real impact.
Backed by top-tier VCs like Google's Gradient Ventures, Monks Hill Ventures, and SOSV, we have offices in the U.S., Vietnam, Portugal, Indonesia, Brazil, and Japan.
Recognition includes:
Top 4 Companies Using AI to Transform the World Forbes
Top 5 Best AI Apps Research Sniper
Top Edtech 150 ASU+GSV
Top 100 AI Companies CB Insights
About the role:
As a Principal Software Engineer, you will play a critical role in designing, developing, and deploying innovative software solutions that support the success of our business. You will be a technical leader, mentor, and collaborator, inspiring your team and sharing your expertise with technical leaders across the organization. Your contributions will influence the architecture of our development teams and shape the future of the industry.
Key Responsibilities:
Requirements:
Why ELSA?

Together with a very talented team of speech recognition scientists and linguistic experts, we created ELSA (English Language Speech Assistant), one of the smartest A.I. assistant for pronunciation training and accent reduction. Our vision is to enable the 1.5 billion language learners around the globe to speak foreign languages with full confidence and unlock their opportunities in life.
Our flagship product, ELSA Speak, is a personal virtual pronunciation coach. ELSA can listen to you speak English, pick out the exact errors as you speak at an individual sound level or intonation, rhythm, and pitch. ELSA will then give you instant feedback and recommendations on how to fix those errors. All these feedback are fully automated using our proprietary speech recognition technology based on deep-learning algorithm.
Our recent accomplishments:
- “The Best Digital Learning App” at Reimagine Education 2016
- The 2016 winner of the world’s largest startup competition SXSWEdu Launch
- Honorable Mention: Fast Company's World Changing Ideas Awards, 2020
- GSV Edtech 150, CBInsights AI 100, 2020 & 2021
- Recognized as Top 5 Best Artificial Intelligence Apps (by Research Sniper); and Top 4 Companies Using AI To Transform The World (by Forbes)
- 50+ million users across 200+ countries
- Invested by Gradient Ventures - Google’s A.I. fund
For career opportunities, please visit https://elsaspeak.com/careers