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I’m Enhao Sun, a full-stack software engineer with 6+ years of experience building Java backend services, React frontends, and data-intensive products end to end. I enjoy owning the full workflow—from backend architecture and REST APIs to frontend implementation and cloud deployment—while also staying close to production operations and reliability. Most recently, I founded and built a profitable question-bank platform for culture exams, using Next.js/React, Supabase, and Vercel, and designed AI-assisted content generation and review pipelines. Previously, I developed Droppoint, an internal asset upload platform with Java services and React workflows, and earlier roles included building cloud-native systems and REST APIs, containerizing services with Kubernetes, and improving deployment and monitoring effectiveness across distributed platforms.…I’m Enhao Sun, a full-stack software engineer with 6+ years of experience building Java backend services, React frontends, and data-intensive products end to end. I enjoy owning the full workflow—from backend architecture and REST APIs to frontend implementation and cloud deployment—while also staying close to production operations and reliability. Most recently, I founded and built a profitable question-bank platform for culture exams, using Next.js/React, Supabase, and Vercel, and designed AI-assisted content generation and review pipelines. Previously, I developed Droppoint, an internal asset upload platform with Java services and React workflows, and earlier roles included building cloud-native systems and REST APIs, containerizing services with Kubernetes, and improving deployment and monitoring effectiveness across distributed platforms.

Enhao Sun

Full Stack Developer, Software Engineer, Back-End Developer, +2

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I’m Enhao Sun, a full-stack software engineer with 6+ years of experience building Java backend services, React frontends, and data-intensive products end to end. I enjoy owning the full workflow—from backend architecture and REST APIs to frontend implementation and cloud deployment—while also staying close to production operations and reliability. Most recently, I founded and built a profitable question-bank platform for culture exams, using Next.js/React, Supabase, and Vercel, and designed AI-assisted content generation and review pipelines. Previously, I developed Droppoint, an internal asset upload platform with Java services and React workflows, and earlier roles included building cloud-native systems and REST APIs, containerizing services with Kubernetes, and improving deployment and monitoring effectiveness across distributed platforms.…I’m Enhao Sun, a full-stack software engineer with 6+ years of experience building Java backend services, React frontends, and data-intensive products end to end. I enjoy owning the full workflow—from backend architecture and REST APIs to frontend implementation and cloud deployment—while also staying close to production operations and reliability. Most recently, I founded and built a profitable question-bank platform for culture exams, using Next.js/React, Supabase, and Vercel, and designed AI-assisted content generation and review pipelines. Previously, I developed Droppoint, an internal asset upload platform with Java services and React workflows, and earlier roles included building cloud-native systems and REST APIs, containerizing services with Kubernetes, and improving deployment and monitoring effectiveness across distributed platforms.

Available to hire

I’m Enhao Sun, a full-stack software engineer with 6+ years of experience building Java backend services, React frontends, and data-intensive products end to end. I enjoy owning the full workflow—from backend architecture and REST APIs to frontend implementation and cloud deployment—while also staying close to production operations and reliability.

Most recently, I founded and built a profitable question-bank platform for culture exams, using Next.js/React, Supabase, and Vercel, and designed AI-assisted content generation and review pipelines. Previously, I developed Droppoint, an internal asset upload platform with Java services and React workflows, and earlier roles included building cloud-native systems and REST APIs, containerizing services with Kubernetes, and improving deployment and monitoring effectiveness across distributed platforms.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

Javanese

Fluent

Aragonese

Intermediate

Work Experience

Founder / Full-stack Engineer at Hucultreexam

December 1, 2025 - Present

Built and launched a commercial question-bank platform for culture exams using Next.js, React, Supabase, and Vercel, generating 3,000+ EUR in revenue. Designed the full-stack workflow for AI-assisted question generation with ChatGPT, internal content review, and large-scale question bank management. Collected and normalized exam materials from social channels and consolidated them into a structured and searchable database, supporting product delivery and monetization.

Associate Software Engineer at Flexion Mobile

March 1, 2024 - April 1, 2026

Developed Droppoint, a full-stack internal platform for customers to upload APKs, in-game item price tables, and other delivery assets, using Java backend services and React-based frontend workflows. Implemented backend flows for validating, storing, and processing large-volume uploads to improve reliability of customer asset ingestion and downstream delivery. Owned improvements across product and platform boundaries, including integrations and operational tooling, and managed AWS infrastructure using EC2 and S3 with AWS CDK for cloud resource definition and CI/CD deployment support.

Full-stack Software Engineer at Freelance

August 1, 2022 - February 1, 2024

Designed and delivered an end-to-end production management system for a manufacturing company using Java (Spring Boot) and React. Translated factory workflows and user pain points into product requirements, data models, APIs, business logic, and user-facing features. Improved production efficiency by 40% and reduced errors in information exchange by strengthening the system’s reliability and clarity of production operations.

Cloud Software Engineer at Intel

October 1, 2021 - July 1, 2022

Built a full-stack image-to-image search application using React and Java microservices to enable vehicle image retrieval in an integrated product workflow. Implemented frontend interfaces and Java backend services for core search workflows and database queries, and ensured reliable service-to-service integration. Containerized and deployed services on Kubernetes and automated environment configuration with Ansible, reducing deployment time by 40% through delivery automation and improved release workflow across development, validation, and operations teams.

Software Engineer at Transwarp

January 1, 2021 - September 1, 2021

Developed backend services for collecting and processing logs and metrics from Elasticsearch, Kafka, and HBase within the Aquila platform. Implemented multi-tenant authentication and access control for 500+ users to strengthen tenant isolation and security. Improved monitoring data accuracy by 25% via new metric collectors and validation logic, and supported customer-facing SLAs by diagnosing distributed-system failures and resolving 90% of reported issues within agreed timeframes.

Software Engineer at Bosch

December 1, 2019 - January 1, 2021

Designed and developed RESTful APIs, file-upload workflows, and CRUD services for a firmware-over-the-air platform, improving API performance by 15%. Built web UI components for vehicle and software-package management and integrated them with Java Spring Boot backend services. Developed firmware testing tooling and helped integrate the platform with external file-encryption services, maintained API documentation, and supported internal/external users integrating with platform APIs.