About CWILL CWILL (pronounced 'quill') is a post-purchase and retention suite built for Shopify brands. Reduce support tickets, recover lost revenue from returns, and turn one-time buyers into loyal fans — with tools purpose-built for every touchpoint that follows the sale. About the Role CWILL Loyalty & Referrals helps Shopify merchants reward repeat customers with points, VIP tiers and referral programs. Production bug fixes and data support for enterprise customers take up a full engineer's time today. As an R&D Trainee, you'll own much of this work, learning our systems from the inside, while growing into a full-stack engineer. Product Intro: https://www.cwill.com/products/loyalty-referrals/ Base location required: Cary, NC (We are unable to hire in other states; relocation will be required.) Hybrid remote working setting What You'll Do Customer Issue Support • Investigate and resolve technical issues from user and support tickets, quickly finding the root cause across frontend and backend (data errors, API errors, display problems and more) • Classify issues by type and severity, respond quickly to urgent ones and drive fixes to completion • Document frequent issues as troubleshooting guides and FAQs to reduce repeat tickets • Work with support and product to reproduce problems, and provide data corrections or workarounds when needed Enterprise Customer Support • Prioritize production issues from enterprise customers, track progress and keep stakeholders updated Product Improvements • Build feature improvements and experience upgrades requested by product and operations, from frontend and backend development through testing and release • Improve performance, refactor code and reduce technical debt to make the system more stable and responsive • Improve frontend interactions and page load speed, and optimize backend API performance and database queries • Join requirement reviews and give input on technical feasibility Requirements Requirements • Bachelor's degree or higher in Computer Science, Software Engineering, Information Technology or a related field; Class of 2026 or recent graduate • Strong programming fundamentals: proficient in at least one backend language (Java, Go, Python or Node.js), with a good grasp of common data structures and algorithms • Frontend basics (HTML, CSS, JavaScript) and at least one framework (React or Vue) • Backend fundamentals: HTTP, RESTful API design and MVC; able to build basic APIs on your own • At least one relational database (MySQL or PostgreSQL): able to write SQL and understand indexes and transactions • Comfortable using Git for version control and team collaboration • Good coding habits, with attention to readability and maintainability • Strong learner who picks up new technologies quickly and solves problems by reading documentation • Clear logical thinking: able to break down problems and explain technical choices • Good communication and ownership; you share progress proactively and stay calm under pressure • Professional working proficiency in Mandarin Chinese and English (you will work daily with our engineering team in China) Nice to Have • A complete full-stack project you can show (coursework, competition, open source or internship) • Internship experience on a software team • Familiarity with TypeScript, Docker, CI/CD or cloud services (AWS, GCP, Alibaba Cloud, etc.) • An active GitHub history or technical blog • Programming competition awards (e.g., ICPC) • Hands-on experience with AI coding tools such as Cursor, Codex or Claude Code Benefits Starting Pay: 80k - 110k depends on experiences, open to negotiation • 401(k) • PTO • Paid Holidays • Insurance