Daniel Yun

Available to hire

Experience Level

Expert
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Intermediate
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Work Experience

Software Engineer Intern at Arcesium
May 1, 2025 - August 31, 2025
Built the core backend gRPC API for a critical internal tool using Java/Kotlin, automating SQL updates to streamline a key feature, achieving a 40%+ performance gain for 300+ engineers who used the tool daily. Wrote 15+ unit and integration tests in Kotlin with 95%+ code coverage that handled edge cases. Automated deployment via a GitLab CI/CD pipeline to build a JAR artifact and release to production. Fine-tuned Claude AI via prompt engineering to auto-generate React + TypeScript UI screens for internal tools, reducing manual debugging time for new API integrations by 75%. Authored an internal technical blog post documenting the key pitfalls and optimizations of AI-generated UIs, reaching 100+ engineers and saving other teams 20+ hours of trial and error.
Software Engineer Intern at CACI International Inc
May 1, 2024 - August 31, 2024
Developed a financial planning tool that streamlined tracking charges and hours for 5,000+ employees, reducing time spent on manual workload by ~35% per biweekly pay period, saving managers 5+ hours/week. Strategically leveraged Python and SQL to design a scalable data model and 20+ RESTful API endpoints, tested rigorously using Unittest and Postman, optimizing processing speed and memory usage by ~23%. Crafted a user-friendly frontend utilizing React.js and Material UI, enhancing user experience and visual appeal, also reducing development time by ~25% using reusable components.
Software Engineer Intern at AfterFlea AiOS
January 1, 2024 - April 30, 2024
Designed and implemented MongoDB schemas and 15+ Express.js API endpoints, optimizing backend workflows and reducing query response time by ~18%. Built a responsive landing page using React.js, ensuring seamless navigation across 30+ communities. collaborated with a lead ML engineer to integrate OpenAI, generating 200+ persona-driven conversations, boosting user retention by ~14% through real-time interactions.

Education

B.S. in Computer Science at Rensselaer Polytechnic Institute
January 11, 2030 - December 1, 2025

Qualifications

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Industry Experience

Software & Internet