Xin Wang
Senior Software Engineer
Full-stack engineer with a PhD in Computer Science, specializing in AI/ML systems and cloud architecture. 10+ years building production systems across healthcare, defence, IoT, and fintech. Track record of leading R&D teams and delivering complex prototypes from concept to deployment.
Experience
Software Engineer
Amazon Web Services (AWS)
06/2021 - Present
- Delivered over 15 customer prototypes across healthcare, defence, IoT, and AI domains
- Built GenAI solutions with fine-tuning, RAG, multi-agent orchestration, and LLM chaining
- Designed VR courtroom training system with LLM-powered NPCs for judicial education
- Automated EF Education's student accommodation allocation with integer programming, replacing manual team effort
- Fine-tuned Whisper for RAF Air Traffic Control radio transcription, boosting processing speed by 3.2x
- Mentored over 5 junior engineers and apprentices
Founding Engineer, R&D Lead
Sigma Squares Tech.
05/2019 - 06/2021
- Led 10-person computer vision research team at cloud-native manufacturing startup
- Built company-wide image processing library for defect detection
- Developed low-code editor improving engineers' productivity by 10x
- Designed lightweight FaaS system for high-speed defect detection
- Established technical reading group to deepen team's ML fundamentals from primary sources
Data Engineer
Horizon Asset Management LLP
05/2018 - 05/2019
- Built analytics for risk management, risk control, and portfolio performance analysis
- Engineered financial knowledge graphs and SQL-RDF conversion pipelines
- Delivered ELT pipelines for front office operations
Research Fellow
University of Southampton
10/2014 - 05/2018
- Conducted research on distributed graph database optimisation
- Led the development of a SQL/NoSQL database sharing platform
- Led several international research projects (EU Horizon 2020, EPSRC)
Skills
Languages:TypeScript, Python, C#, Java
Web:React, NestJS, FastAPI, GraphQL, WebSocket
AWS:CDK, Lambda, Bedrock, Neptune, IoT Core, Greengrass
AI/ML:Nova Sonic, Whisper, RAG, Knowledge Bases, Computer Vision, MLflow
Data:Knowledge Graphs, SPARQL, Time-series
Education
PhD & MSc, Computer Science
University of Southampton, UK
BSc, Information Management
University of Science and Technology of China
Projects
Swedish Federal Courts - Real-time AI Voice Training System
Nova Sonic, WebSocket, Bedrock, React, C#
- Built real-time AI voice NPCs with bidirectional streaming and multi-persona support
- Implemented game client with emotion tags and chaos events for training scenarios
NICE - Healthcare Knowledge Graph
Amazon Neptune, FHIR, Bedrock, SPARQL
- Designed healthcare knowledge graphs for NICE clinical guidelines
- Built taxonomy ingestion pipeline with vector embeddings
Visual Algorithm Editor
Electron, Python, OpenCV, TypeScript
- Open-source visual editor for composing image processing pipelines (github.com/xgfd/sight)