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Chandni S.

Chandni S.

Senior Backend Engineer | AI Systems, Python, Shopify, WordPress

I’m a Senior Software Engineer with 8+ years of experience building scalable backend systems, high-performance web applications, and complex e-commerce platforms. My core strength lies in backend engineering, where I design and develop reliable APIs, modular architectures, and production-grade systems using Node.js, Python, and Java. Alongside this, I bring extensive experience in WordPress, Shopify, and modern frontend frameworks, allowing me to deliver complete, end-to-end solutions. More recently, I’ve been working with system-level problem solving, including debugging execution flows, reviewing system behavior, and improving reliability across real-world environments. I’m comfortable working on projects that require deep attention to detail, structured thinking, and clear technical feedback. Backend & AI Systems Focus ✅Design and development of scalable REST APIs and backend services ✅Modular system architecture (data processing, logic layers, reporting separation) ✅Debugging system logs and improving execution paths toward reliable outcomes ✅Code review, refactoring, and performance optimization ✅Handling multi-step system interactions in real-world environments ✅Identifying edge-case failures such as data exposure, access control issues, and logic inconsistencies ✅Security-focused development including authentication, authorization, and vulnerability detection Back-End Development ✅Node.js & Express.js APIs ✅Python-based backend systems ✅Java (Spring Boot, Spring MVC, Hibernate) enterprise applications ✅Microservices architecture and distributed systems ✅RESTful and GraphQL APIs ✅Database management (MySQL, PostgreSQL, MongoDB, Redis) ✅Cloud deployment (AWS, GCP, Azure) ✅Docker and CI/CD pipelines ✅Secure API development and system design WordPress Expertise ✅Custom WordPress theme and plugin development ✅WooCommerce store setup and customization ✅ACF / Elementor / Divi / Gutenberg / WPBakery ✅PSD to WordPress conversion ✅Plugin and theme customization ✅Google Analytics integration and tracking ✅E-commerce optimization Shopify Expertise ✅Shopify store setup and customization ✅Custom Shopify app development ✅Shopify theme design and modification ✅Shopify Plus development ✅Conversion rate optimization ✅Platform migrations ✅App integrations ✅Performance optimization Front-End Development ✅React.js, Vue.js, Next.js applications ✅Tailwind CSS, Bootstrap, Material UI ✅SEO-focused SSR with Next.js ✅Responsive UI and cross-browser compatibility ✅UI/UX design and prototyping ✅Front-end performance optimization Additional Skills ✅Agile workflows (Jira, Trello) ✅API integrations and system connectivity ✅Database optimization and query performance tuning ✅Git-based version control ✅Clean, maintainable, and well-structured code practices ✅ Keywords Backend Engineering, AI Systems, System Design, Node.js, Python, Java, REST APIs, Microservices, Code Review, Debugging, System Optimization, Data Processing, Security Testing, WordPress, Shopify, WooCommerce, Custom Themes, Shopify Apps, React.js, Vue.js, Next.js, PostgreSQL, MySQL, MongoDB, AWS, Docker, CI/CD, API Integration, Scalable Systems, E-commerce Development

🇺🇸Vancouver, United States$45/hr100% JSS4.89 (8)Since Feb 2021

Earnings and projects

MRR
$131

Last 6 months ÷ 6

World#127,505 / 412k
🇺🇸Country#17,482 / 62.1k
Revenue, last 30 days
$0

Last 6 months: $787

Total earnings
$1.1k

Billed in all: $1.2k

World#383,607 / 412k
🇺🇸Country#58,581 / 62.1k
Per project
$103

$197 in the last 6 months

World#301,422 / 412k
🇺🇸Country#45,332 / 62.1k
Projects, last 6 months
4
75% fixed25% hourly
World#51,813 / 412k
🇺🇸Country#7,181 / 62.1k
Projects in all
11

Across 13 contracts

69% fixed31% hourly
World#192,417 / 412k
🇺🇸Country#27,474 / 62.1k

Earnings, last 30 days

$1.2kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$1,140$1,160$1,180$1,200Oct 8Oct 23Nov 7

Skill rankings: Top 19% in PSD to HTML

Ranked by MRR among everyone on Upwork with the skill.

  1. #528PSD to HTML2,799 freelancers · 🇺🇸 #21Top 19%
  2. #662Custom Web Design1,745 freelancers · 🇺🇸 #93Top 38%
  3. #814PSD to WordPress3,296 freelancers · 🇺🇸 #45Top 25%
  4. #1,316Shopify Templates3,688 freelancers · 🇺🇸 #110Top 36%
  5. #1,544WordPress Theme4,985 freelancers · 🇺🇸 #154Top 31%
  6. #1,659WordPress Plugin5,436 freelancers · 🇺🇸 #173Top 31%
  7. #1,728Shopify Theme4,613 freelancers · 🇺🇸 #161Top 37%
  8. #1,806Shopify Development4,372 freelancers · 🇺🇸 #164Top 41%