Hoan H.

Expert in 𝒂𝒓𝒄𝒉𝒊𝒕𝒆𝒄𝒕𝒖𝒓𝒆 𝒅𝒆𝒔𝒊𝒈𝒏 and 𝒃𝒂𝒄𝒌𝒆𝒏𝒅 𝒅𝒆𝒗𝒆𝒍𝒐𝒑𝒎𝒆𝒏𝒕 (𝟖 𝒚𝒆𝒂𝒓𝒔), with over 𝟏5 𝒚𝒆𝒂𝒓𝒔 of experience in software development. Has experience building a 𝒍𝒂𝒓𝒈𝒆 𝒔𝒚𝒔𝒕𝒆𝒎 𝒇𝒓𝒐𝒎 𝒔𝒄𝒓𝒂𝒕𝒄𝒉, using 𝒎𝒊𝒄𝒓𝒐𝒔𝒆𝒓𝒗𝒊𝒄𝒆. I leverage 𝑨𝑰-𝒂𝒖𝒈𝒎𝒆𝒏𝒕𝒆𝒅 𝒅𝒆𝒗𝒆𝒍𝒐𝒑𝒎𝒆𝒏𝒕 to deliver faster with higher quality — combining deep engineering expertise with AI tooling to 𝒂𝒄𝒄𝒆𝒍𝒆𝒓𝒂𝒕𝒆 𝒆𝒗𝒆𝒓𝒚 𝒑𝒉𝒂𝒔𝒆 of the development lifecycle. 𝐂𝐚𝐧 𝐢𝐧𝐯𝐨𝐥𝐯𝐞 𝐦𝐮𝐥𝐭𝐢𝐩𝐥𝐞 𝐩𝐡𝐚𝐬𝐞𝐬 𝐨𝐟 𝐭𝐡𝐞 𝐬𝐨𝐟𝐭𝐰𝐚𝐫𝐞 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐩𝐫𝐨𝐜𝐞𝐬𝐬: ⇥ Analyze requirements and give feedback ⇥ Plan and manage tasks/bugs on JIRA ⇥ Create architecture design for the system ⇥ Design API schema (GraphQL, REST, SocketIO …) ⇥ Implement backend code, create test cases for automation test ⇥ Apply CI/CD to automatic test and deployment flow 𝐈 𝐚𝐥𝐫𝐞𝐚𝐝𝐲 𝐰𝐨𝐫𝐤𝐞𝐝 𝐨𝐧: ✓ 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞 𝐝𝐞𝐬𝐢𝐠𝐧 (𝐀𝐥𝐫𝐞𝐚𝐝𝐲 𝐫𝐞𝐜𝐞𝐢𝐯𝐞𝐝 𝐠𝐨𝐨𝐝 𝐟𝐞𝐞𝐝𝐛𝐚𝐜𝐤 𝐟𝐫𝐨𝐦 𝐭𝐡𝐞 𝐀𝐖𝐒 𝐭𝐞𝐚𝐦) ⇥ Create full architecture design for a system, decide technical stacks, protocols, performance … ⇥ Apply API gateway for security, log, validate … Has written plugins for API gateway ⇥ Using message queue to synchronize communication between microservices ⇥ Handle distribution transactions for microservices (Saga pattern, outbox table pattern …) ⇥ Handle security for the system ⇥ … ✓ 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: ⇥ Strong experience with NodeJS, MongoDB, and other languages: PHP, and Python. Have the ability to give a good solution to a problem. ⇥ Create backend API with REST and GraphQL ⇥ Apply WebRTC, WebSocket for real-time application ⇥ Created a template for NodeJS to speed up the development process. ⇥ Always write clean code, easy to maintain and integrate. Create unit test, integration test. ⇥ Good skills with AWS services (EKS, SNS, SQS, SES, CloudFront, Elastic Cache … ) ⇥ Integrate with Payment gateway (Stripe) ⇥ … ✓ 𝐀𝐈-𝐀𝐮𝐠𝐦𝐞𝐧𝐭𝐞𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: ⇥ Using Claude Code as an agentic coding partner — for scaffolding, refactoring, code review, and test generation ⇥ Built custom AI agents and skills to automate repetitive development tasks ⇥ Integrating LLMs into applications via API (Anthropic, OpenAI) for intelligent features ⇥ Experience with MCP (Model Context Protocol) to connect AI tools with external services ⇥ Crafting precise prompts and system instructions to get reliable, production-grade AI output ⇥ Combining AI speed with senior-level judgment — I review, verify, and architect; AI accelerates execution ⇥ This workflow allows me to deliver 𝟐–𝟑𝒙 𝒇𝒂𝒔𝒕𝒆𝒓 without sacrificing code quality ⇥ … ✓ 𝐎𝐭𝐡𝐞𝐫 𝐬𝐤𝐢𝐥𝐥𝐬: ⇥ DRM with creating encrypted video contains and DRM service (Widevine, PlayReady) ⇥ FFMPEG process video ⇥ Scraping data using python ⇥ Good at English for both speaking and writing ⇥ Have knowledge about ReactJS and Vue ⇥ … My skills are 𝒂𝒍𝒓𝒆𝒂𝒅𝒚 𝒗𝒆𝒓𝒊𝒇𝒊𝒆𝒅 by my customer's feedback on Upwork. Just invite me, and I will show you what I can do, 𝒚𝒐𝒖 𝒘𝒊𝒍𝒍 𝒏𝒐𝒕 𝒃𝒆 𝒅𝒊𝒔𝒂𝒑𝒑𝒐𝒊𝒏𝒕𝒆𝒅.