# Order Tracking R&D Trainee - Backend Engineer (Go / PHP) - Bilingual Mandarin

**Company:** [CWILL](https://jobs.workable.com/companies/3pBzndN1tf1QvG8WDwNGii.md)
**Location:** cary, United States
**Workplace:** hybrid
**Employment type:** Full-time

[Apply for this job](https://jobs.workable.com/view/a3242595-e489-40ec-a678-0142daf5055c)

## Description

**About CWILL**

CWILL (pronounced "quill") is a post-purchase and retention suite trusted by 30,000+ Shopify and DTC brands. Our products cover order tracking, returns and exchanges, shipping protection, loyalty and referrals, product reviews, pop-up and email marketing, AI chat and SEO ([cwill.com](https://www.cwill.com)). Our product and customer teams are in the US, and our engineering teams are in China.

**About the Role**

[CWILL Order Tracking](https://apps.shopify.com/parcelpanel) helps Shopify merchants keep shoppers informed after checkout, with branded tracking pages, real-time shipment updates and delivery notifications. As an R&D Trainee, you'll work on backend development for our Shopify apps and grow into an engineer who can independently own feature modules. Our core PHP/Swoole projects are under active development, and Go is our long-term direction.

**Tech stack:** Go, PHP/Swoole, MySQL 8.x, Redis, RabbitMQ, AWS.

**Location:** Cary, NC (hybrid). We are unable to hire in other states; relocation is required.

**What You'll Do**

-   Build features, integrate APIs and fix issues in our Go and PHP/Swoole projects.
-   With guidance from senior engineers, read code, investigate logs, write tests, take part in code reviews and deliver tasks on schedule.
-   Work with product, QA and engineering to clarify requirements, share progress and raise issues, and write technical notes where needed.

## Requirements

-   **Programming fundamentals:** solid grasp of at least one backend language; able to build a small feature and explain how it works. Go or PHP preferred, but you don't need to know both. Coursework, personal projects and internships all count.
-   **Backend fundamentals:** understand the basics of HTTP, APIs, JSON, databases, caching and message queues; able to write basic SQL, use Git and track down problems from logs.
-   **Learning and collaboration:** you read documentation, test things hands-on and ask specific questions; you share progress and blockers proactively, and take code review feedback on board.
-   **Language:** able to clarify requirements, discuss technical topics and write progress updates in Mandarin Chinese with our China-based engineering team; able to read English technical documentation and error messages (tools are fine).
-   **AI tools:** willing to use company-provided Codex and Claude Code in your work; able to understand, review and test the code you submit, and follow our data security rules. No prior experience with specific AI tools required.

**Nice to Have**

-   Project experience with Go, PHP/Swoole, Shopify apps or third-party API integrations.
-   Experience with MySQL 8.x, Redis or RabbitMQ, or exposure to AWS, Linux or Docker. Production operations and performance tuning experience is not required.

## Benefits

-   Starting pay: $80K–$110K depending on experience, open to negotiation
-   401(k)
-   PTO
-   Paid holidays
-   Insurance
-   Mentorship and a clear growth path from trainee to engineer