AI SEO R&D Trainee - Full-Stack Engineer (Go Backend) - Bilingual Mandarin

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 AI SEO & Image Optimizer is our AI-powered SEO and site speed product for cross-border e-commerce and Shopify merchants. It helps merchants improve content quality, indexing, keyword coverage and organic traffic, with more site audits, keyword analysis, content generation, reporting and AI SEO workflows on the way.

As an R&D Trainee, you'll learn by building real features with a mentor, and grow into an engineer who owns a module independently.

Product Intro: https://www.cwill.com/products/seo-speed/

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

• Build AI SEO Features
• With guidance from your mentor, develop features across site audits, page checks, keyword analysis, content optimization, AI suggestions and reporting
• Break down requirements into technical tasks, then code, integrate, test and release
• Work on API integration between frontend and backend, data processing, business logic and UI improvements
• Own the quality of what you ship
• Process SEO Data and Improve the System
• Work with page, keyword, meta tag, site structure and indexing data
• Build SEO check rules, scoring logic, optimization suggestions and report metrics
• Help troubleshoot production bugs, data issues and customer-reported problems
• Build AI SEO Capabilities
• Develop AI generation of titles, meta descriptions, content suggestions and keyword suggestions
• Improve AI output quality, generation speed, user experience and error handling
• Work on prompts, rules, templates and output evaluation
• Collaborate and Deliver
• Work with product, design, QA, operations and customer success to understand the why behind each feature
• Follow team coding standards, take part in code review, and add documentation and tests
• Share progress, risks and blockers proactively, and join retrospectives after each launch
• Your Growth Path
• By 3 months: understand the product and its main workflows; complete small features, bug fixes and data tasks with your mentor
• By 6 months: independently own a small module, such as an SEO check, optimization suggestions or a report page
• By 12 months: own a product module or technical area at the level of a junior engineer

Requirements

Requirements

• Proficiency in Go (Golang) is required. Experience with other languages such as JavaScript/TypeScript, Python, Java or PHP is a plus
• Bachelor's or master's degree from a US university, graduating recently or within the last 1–2 years. Any major; Computer Science, Information Systems, Engineering or related fields preferred
• Solid understanding of web development fundamentals: HTTP, APIs, databases and frontend–backend interaction
• Good coding and debugging skills: you can get to the bottom of a problem and fix it completely
• Strong learner who reads documentation, digs into problems and grows quickly on real projects
• Reliable and detail-oriented; you keep the team updated on progress and issues
• Professional working proficiency in Mandarin Chinese and English (you will work daily with our engineering team in China)
• Software development or SaaS internship experience preferred
• Nice to Have
• Experience building web apps, SaaS, SEO tools, AI apps, online stores or Shopify apps
• Familiarity with one or more of: PHP, React, Node.js, Next.js, NestJS, Python, PostgreSQL, Redis
• Basic SEO knowledge: keywords, titles, meta descriptions, site structure, indexing and organic traffic
• AI projects such as LLM apps, prompting, RAG, content generation or automated analysis
• Experience with data collection, data cleaning, reporting or web crawlers