Open to opportunities

Adrian Dang Xuan

@adriandangxuan

Senior software engineer building premium UX SaaS with scalable cloud-native systems and performance-first architecture.

Poland

Message

What I'm looking for

I’m looking for a team that values continuous improvement and clean UI consistency, where I can deliver high-performance SaaS with scalable microservices, real-time features, and strong cloud-native engineering in collaboration with cross-functional global teams.

I’m a Senior Software Engineer with 10+ years of experience building and refining high-quality, user-centric SaaS platforms. I focus on premium UX, performance optimization, and scalable cloud-native systems—pairing deep frontend expertise in React/TypeScript with backend strengths across ASP.NET Core, Node.js, and Python.

In my recent role, I orchestrated a migration from a legacy monolith into 15+ microservices, improving uptime to 99.97% and cutting infrastructure costs by 25% while enabling faster iteration. I also standardize UI components and interaction patterns to reduce inconsistencies, architect RESTful APIs handling 1M+ monthly requests, and deliver real-time collaboration using SignalR and Redis Pub/Sub—often partnering with ML teams to integrate TensorFlow models that increase adoption through smarter UI recommendations.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Hexagon

Mar 2024 - Present (2 years 1 month)

Led migration of a legacy monolith into 15+ ASP.NET Core and Docker-based microservices on Kubernetes, improving uptime to 99.97% and reducing infrastructure costs by 25%. Improved UX and performance by standardizing React/TypeScript components (38% fewer UI inconsistencies) and reducing page load times by 42% through tuning across frontend and backend.

ASP.NET Core Docker Kubernetes React TypeScript Microservices RESTful APIs AWS SignalR PostgreSQL

Software Developer

Geniusee

Jul 2020 - Feb 2024 (3 years 7 months)

Built Node.js and TypeScript microservices to process millions of transactions daily, increasing throughput and reducing processing delays by 35%. Revamped the React frontend to improve Lighthouse scores from 68 to 91, and modernized infrastructure with AWS Docker/Kubernetes to cut downtime incidents by 30% during peak events.

NodeJS Node.Js TypeScript React AWS Docker Kubernetes PostgreSQL MongoDB WebSockets CI CD

Associate Software Developer

Beetroot Ab

Jan 2018 - Jun 2020 (2 years 5 months)

Built an inventory management system with ASP.NET Core and Spring to support 200+ stores, improving stock visibility accuracy by 29%. Created REST APIs that reduced checkout latency by 22%, and migrated to containerized microservices on Docker/Kubernetes to reduce release cycles by 34%.

ASP.NET Core Docker Kubernetes REST APIs PostgreSQL React Native OAuth 2.0 JWT AWS

Web Developer Intern

Sigma Software Group

Mar 2017 - Dec 2017 (9 months)

Developed an HR platform with React and Node.js for 5,000+ users, improving usability and employee self-service workflows. Built REST APIs for payroll and employee management (reducing manual effort by 26%) and implemented real-time chat using WebSockets.