Software Engineer - AI Systems (Middle/Senior)

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 Responsibilities

• Design and develop scalable backend systems and services using Java, Golang, or Python
• Build APIs and platforms that integrate with AI services and LLM-based systems
• Develop internal tools and smart infrastructure that improve engineering productivity
• Integrate with AI/LLM APIs to enable automation, intelligent workflows, and AI-powered features
• Collaborate with AI Engineers and Product teams to deliver AI-enabled solutions
• Build reliable and scalable microservices and distributed systems
• Optimize system performance, reliability, and scalability
• Troubleshoot production issues and continuously improve system stability
• Contribute to system architecture, engineering standards, testing, and documentation
• Explore and adopt AI-native development practices and tools

Requirements

• Bachelor's Degree in Computer Science / Information Technology / Software Development or related fields

Must have:

• 2+ years of experience in backend software development
• Proficiency in at least one of the following languages: Java / Golang / Python
• Experience building RESTful APIs and backend services
• Good understanding of system design and distributed systems
• Experience working with databases (PostgreSQL, MySQL, Redis, or NoSQL)
• Familiarity with Docker or containerized environments
• Experience with cloud platforms (AWS, GCP, or Azure) is a plus
• Strong problem-solving skills and engineering ownership
• Intermediate English communication

Nice to have:

• Experience working with LLM APIs (OpenAI, Claude, etc.)
• Experience building applications that call and orchestrate external APIs
• Familiarity with RAG pipelines, LLM orchestration, or AI application architectures
• Experience with vector databases (Pinecone, Weaviate, Milvus)
• Familiarity with event-driven architectures (Kafka, RabbitMQ)
• Experience working with Kubernetes in production environments
• Basic understanding of MLOps or AI infrastructure

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