04/28/2026 updated
100 % available
Senior Backend / AI Engineer
Battambang, Cambodia
Only remote
Bachelor of Computer Science and TechnologyAbout me
Senior backend & AI engineer with 4 years shipping production systems in Southeast Asia. Specialist in Kotlin/Ktor compiled to GraalVM native images, Rust/Actix-web, and RAG-based AI. Shipped Bakong payment integrations, and currently building Cambodia's first multi-company co-insurance platform.
AI AgentsRAGPython (Programming Language)Machine LearningRust (Programming Language)BackendKotlinGolang
Backend Development with Kotlin/Ktor and GraalVM
Expertise in building high-performance backend services using Kotlin/Ktor, compiled to GraalVM native images, achieving up to 75% memory reduction and near-instant cold starts in production environments.
RAG-based AI Systems
Hands-on experience designing and operating production-grade Retrieval-Augmented Generation (RAG) systems, handling 10K-100K queries per day using OpenAI, Ollama, Qdrant, and ArangoDB.
Machine Learning and AI Engineering
Proficiency in building ML pipelines with PyTorch, LangChain, LangGraph, and fine-tuning models, including multilingual LLM pipelines, image classification, and OCR systems.
Programming Languages
Strong command of multiple programming languages including Java, Kotlin, Python, Golang, and Rust, applied across diverse backend and AI projects.
Database Management
Experience with relational and NoSQL databases including MySQL, PostgreSQL, MongoDB, ArangoDB, and Qdrant for various production use cases.
Backend Frameworks
Practical knowledge of backend frameworks such as Ktor, Spring Boot, Django, Flask, FastAPI, Gin, and Actix-Web for building scalable microservices and APIs.
Cloud and DevOps
Familiarity with cloud platforms and DevOps tools including GraalVM Native Image, Docker, Kubernetes, AWS, and Microsoft Azure for deploying and managing production systems.
Payment Integration
Experience integrating national payment standards such as Bakong and KHQR into core banking systems in Cambodia.
Tools
Proficient use of development and operations tools including Git, Postman, MQTT, and GraalVM in day-to-day engineering workflows.
Expertise in building high-performance backend services using Kotlin/Ktor, compiled to GraalVM native images, achieving up to 75% memory reduction and near-instant cold starts in production environments.
RAG-based AI Systems
Hands-on experience designing and operating production-grade Retrieval-Augmented Generation (RAG) systems, handling 10K-100K queries per day using OpenAI, Ollama, Qdrant, and ArangoDB.
Machine Learning and AI Engineering
Proficiency in building ML pipelines with PyTorch, LangChain, LangGraph, and fine-tuning models, including multilingual LLM pipelines, image classification, and OCR systems.
Programming Languages
Strong command of multiple programming languages including Java, Kotlin, Python, Golang, and Rust, applied across diverse backend and AI projects.
Database Management
Experience with relational and NoSQL databases including MySQL, PostgreSQL, MongoDB, ArangoDB, and Qdrant for various production use cases.
Backend Frameworks
Practical knowledge of backend frameworks such as Ktor, Spring Boot, Django, Flask, FastAPI, Gin, and Actix-Web for building scalable microservices and APIs.
Cloud and DevOps
Familiarity with cloud platforms and DevOps tools including GraalVM Native Image, Docker, Kubernetes, AWS, and Microsoft Azure for deploying and managing production systems.
Payment Integration
Experience integrating national payment standards such as Bakong and KHQR into core banking systems in Cambodia.
Tools
Proficient use of development and operations tools including Git, Postman, MQTT, and GraalVM in day-to-day engineering workflows.
Languages
ChineseGoodEnglishFluent
Project history
Built core backend services in Kotlin/Ktor compiled to GraalVM native images, reducing memory footprint by ~75%. Designed and shipped a co-insurance platform for Cambodian insurance companies. Built and operated a production RAG system handling 10K-100K queries/day. Authored a reusable Gradle package for WebSocket support. Created a one-click project scaffolding tool. Researching a custom Khmer-language OCR pipeline for national ID extraction.
Internship at Huawei focused on Image Classification and NLP.
Built the RAG system for the Infinium project (automotive lubricant and oil reference) on Microsoft Azure. Tuned retrieval and generation parameters to eliminate hallucinations. Performed data analysis and visualization for internal decision-making using OpenAI models on Azure.