Loyalty & Referrals R&D Trainee - Full-Stack Engineer - Bilingual Mandarin

CWILL•Cary, NC

9d•$80,000 - $110,000•Hybrid

About The Position

CWILL is a post-purchase and retention suite for Shopify brands. The Loyalty & Referrals product helps merchants reward repeat customers through points, VIP tiers, and referral programs. As an R&D Trainee, you will take ownership of production bug fixes and data support for customers, including enterprise customers, while learning CWILL’s systems and developing into a full-stack engineer. The role is based in Cary, North Carolina, and uses a hybrid remote working setting. Relocation is required if needed because CWILL is unable to hire in other states. You will investigate and resolve frontend and backend customer issues, prioritize enterprise production problems, and build product and experience improvements from development through testing and release. You will also work with support and product teams to reproduce problems, provide data corrections or workarounds, and contribute to technical requirements reviews.

Requirements

Bachelor’s degree or higher in Computer Science, Software Engineering, Information Technology, or a related field.
Class of 2026 or a recent graduate.
Proficiency in at least one backend language: Java, Go, Python, or Node.js.
Good understanding of common data structures and algorithms.
Knowledge of HTML, CSS, and JavaScript, and at least one frontend framework such as React or Vue.
Understanding of HTTP, RESTful API design, and MVC; ability to build basic APIs independently.
Experience with at least one relational database, MySQL or PostgreSQL, including SQL, indexes, and transactions.
Comfort using Git for version control and team collaboration.
Good coding habits and attention to readability and maintainability.
Ability to learn new technologies quickly and solve problems by reading documentation.
Clear logical thinking, including the ability to break down problems and explain technical choices.
Good communication and ownership, including proactively sharing progress and staying calm under pressure.
Professional working proficiency in Mandarin Chinese and English; the role involves daily work with the engineering team in China.
Must be able to work from the Cary, North Carolina base location; relocation is required if necessary, and hiring in other states is unavailable.

Nice To Haves

A complete full-stack project to show, such as coursework, competition, open-source work, or an internship project.
Internship experience on a software team.
Familiarity with TypeScript, Docker, CI/CD, or cloud services such as AWS, GCP, or Alibaba Cloud.
An active GitHub history or technical blog.
Programming competition awards, such as ICPC.
Hands-on experience with AI coding tools such as Cursor, Codex, or Claude Code.

Responsibilities

Investigate and resolve technical issues reported by users and support tickets across frontend and backend systems, including data errors, API errors, and display problems.
Classify issues by type and severity, respond quickly to urgent issues, and drive fixes to completion.
Document recurring issues in troubleshooting guides and FAQs to reduce repeat support tickets.
Work with support and product teams to reproduce problems and provide data corrections or workarounds when needed.
Prioritize production issues from enterprise customers, track progress, and keep stakeholders updated.
Build feature improvements and experience upgrades requested by product and operations, covering frontend and backend development, 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.
Participate in requirements reviews and provide input on technical feasibility.