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
Top Skills
What We Do
EPOS, founded in 2009, is a leading Point-Of-Sales (POS) system vendor. We aim to provide SMEs powerful yet cost-effective digital solutions.
Our systems are used in over 60 different industries, including major Singapore government agencies and MNCs. We have an active and strong team capable of flexible customisation requirements and handling of major projects (e.g. major clients will have 50-60 outlets, with more than 100 POS terminals). Our clients include LTA, KKHospital, Popular Bookstore, UMart, Bounce Inc.
We are a team that is truly passionate about helping businesses succeed. We want to see our customers thrive, and to expand and grow their business as ours.
