About EPOS Vietnam
Established in 2009, EPOS Vietnam serves as the technical hub of EPOS Singapore, a leading provider of cutting-edge Point-of-Sale (POS) and SaaS solutions. Backed by Ant International a global leader in digital payments and financial technology we play a pivotal role in developing innovative, scalable, and user-centric digital solutions that power EPOS products. Our technologies enable thousands of SMEs in Singapore, and with ongoing expansion plans across Asia, to digitize and grow their operations through cost-effective and reliable platforms.
At EPOS Vietnam, we cultivate a collaborative and dynamic culture driven by innovation and a passion for transforming businesses through technology. Join us to shape the future of digital solutions across Asia and beyond!
Key Contributions
- Design, build, and implement production-grade AI microservices (APIs, workers) that meet reliability, latency, and cost goals
- Take ownership of the retrieval pipeline - including ingestion, chunking, embeddings, indexing, and caching - and the evaluation process to monitor answer relevance, groundedness, and hallucination rate
- Implement strong observability (tracing, prompt/version tracking, token usage) and security practices (secrets management, PII handling)
- Work with product and AI prototype teams to run experiments and turn prototype code into production-quality systems
For Senior level: Mentor junior engineers and collaborate with PMs on scope and metrics
Requirements
- Bachelor's Degree in Computer Science / Information Technology / Software Development or related fields
Must have:
- 5+ years of backend engineering experience using Python or Java
- Hands-on experience building LLM or agent-based applications, with solid knowledge of LLM/agent architectures
- Proven track record of shipping production microservices with FastAPI/Flask/Django, and experience with Docker, CI/CD, and testing frameworks
- Good written and verbal English communication is mandatory
Nice to have:
- Proficient with cloud platforms (AWS/GCP/Azure/AliCloud) and queues/caches (Redis/Celery)
- Familiarity with prompt/context management, function/tool calling, structured outputs, and LLM observability (tracing, version control, latency, cost)
- Experience with voice agents (ASR/TTS, streaming) or conversational BI (SQL generation, guardrails)
- Practical RAG expertise beyond basics, including chunking, hybrid semantic & BM25 retrievals, rerankers, ingestion pipelines, and metadata handling
- Effective use of AI coding tools such as Cursor, Copilot, or Claude
Benefits
We are a multinational, product-driven company specializing in proprietary POS solutions developing in-house and delivering directly to our worldwide customers.
Benefits
- Recognition & Rewards:
- Performance Bonus (subject to the company's business results and the employee's performance evaluation)
- Biannual Performance Review and Salary Adjustment
- Comprehensive Insurance Coverage:
- Full government public insurance contributions based on gross salary
- Premium health insurance
- Annual health check
- Clear career development and growth structure; Training sessions and Learning workshops
- 14 days of annual leave and one additional day of leave for every year of service
- Laptop/MacBook and top-notch facilities are provided based on each role
- Agile/Scrum-based internal workflows for efficient and collaborative development
- Company trips, parties and regular team-building activities; Weekly happy hour, coffee, snacks, and board games
- Overseas travel opportunities based on the individual performance and policies for each evaluation period
Working Environment & Culture
- International Workplace: English-speaking environment
- Positive and Open-Minded Culture: Engineers are encouraged to propose innovative solutions that enhance productivity and code quality
- 1-on-1 Mentorship: Monthly coffee sessions with managers offer personalized feedback, goal setting, and career development opportunities
- Flexible Working Hours: Promote work-life balance and individual productivity
