Module Lead Senior Backend Technical Lead

ARUNKUMAR C

Module Lead Senior Backend Developer Technical Lead

Chennai, India 904-***-**** **.*************@*****.*** PROFESSIONAL SUMMARY

Backend developer and technical lead with 12+ years of experience building SaaS, e-commerce, and e-learning platforms using PHP, Laravel/Lumen, microservices, databases, and AWS. Experienced in system design, API development, database design, third-party integrations, production troubleshooting, and technical leadership. Hands-on experience designing and implementing AI-powered authoring and marking workflows using AWS Bedrock, along with event-driven processing using SQS and Lambda.

CORE SKILLS

Backend: PHP, Laravel, Lumen, REST APIs, Microservices, API Design, System Design

Databases: MySQL, PostgreSQL, MongoDB, Elasticsearch, OpenSearch, Redis Cloud & Infrastructure: AWS S3, SQS, Lambda, CloudWatch, Docker AI & AI Development: AWS Bedrock, AI Authoring, AI Marking, AI-based Answer Extraction, Claude Code, Claude Skills, AI-assisted Development Development: Eloquent, Queues/Jobs, Events/Listeners, Middleware, Caching, Scheduling

Integrations: LMS Integrations, Shopify GraphQL, Third-Party APIs Leadership: Technical Design, Code Review, Mentoring, Task Allocation, Requirement Analysis

PROFESSIONAL EXPERIENCE

ELUMINA ELEARNING SERVICES PVT LTD — Chennai

Module Lead Aug 2025 – Present

Senior Backend Developer Aug 2024 – Aug 2025

● Provide technical ownership for the Assess App assessment platform, covering requirement analysis, solution design, database design, API design, backend development, code reviews, documentation, and production issue investigation.

● Lead a team of 4 backend and 3 frontend developers, supporting task allocation, technical guidance, code reviews, and mentoring.

● Independently design solutions for new features, including service boundaries, database changes, API structures, synchronous/asynchronous processing, caching, and AWS-based workflows.

● Designed and implemented AI Authoring and AI Marking using AWS Bedrock, integrating AI-generated questions, marks, and marking keys into the existing assessment workflow.

● Designed AI request/prompt structures and implemented handling for invalid or malformed AI responses, retries, and error scenarios.

● Designed and implemented an AI-based handwritten answer extraction pipeline using S3 SQS Lambda AWS Bedrock AssessApp.

● Developed Lambda processing to handle multiple answer files concurrently as part of the scalable answer-processing workflow.

● Applied Claude Code and Claude Skills for AI-assisted software development for code analysis, technical documentation, PRD analysis, and development workflow automation.

● Implemented key assessment capabilities including assessment configuration, multiple attempts, LMS integrations, and candidate enrollment/result APIs.

● Investigate production issues across application logs, APIs, databases, and backend services, identifying root causes and delivering fixes/hotfixes when required.

Environment: PHP, Laravel, Lumen, MySQL, PostgreSQL, Redis, Docker, AWS S3, SQS, Lambda, CloudWatch, AWS Bedrock

TARGETBAY — Chennai

Associate Lead 2020 – Jul 2024

● Worked on BayReviews, a SaaS-based review management platform for e-commerce businesses.

● Led backend development, system/API design, database design, code reviews, mentoring, and technical planning for a team of 4 developers.

● Designed and developed backend services using Laravel, MySQL, Elasticsearch, MongoDB, and Redis.

● Planned and worked extensively on the migration of production review data from Elasticsearch to MongoDB.

● Designed and implemented Shopify GraphQL integration and other third-party platform integrations.

● Worked on Elasticsearch-based search, background jobs/queues, performance optimization, and production troubleshooting.

● Supported technical planning and task allocation while mentoring junior developers.

Environment: PHP, Laravel, MySQL, MongoDB, Elasticsearch, Redis ELUMINA ELEARNING SERVICES PVT LTD — Chennai

Senior Backend Developer 2018 – 2020

● Worked on a QMS e-learning SaaS platform based on PHP/Lumen and microservices.

● Took technical ownership for backend development and contributed to microservice, database, and API design.

● Developed custom forms and question management, workflow/approval processes, versioning and revert functionality, and file-upload capabilities.

● Worked with MySQL, Elasticsearch, Redis, and Docker for application development and supporting services.

● Prepared WBS/LLD documentation and mentored junior developers. Environment: PHP, Lumen, MySQL, Elasticsearch, Redis, Docker GLOCOM ECOMMERCE PRIVATE LTD — Chennai

Backend Developer Senior Web Developer 2014 – 2018

● Developed backend functionality for e-commerce and marketplace applications using PHP, CodeIgniter, and MySQL.

● Designed and developed a web crawler to collect vendor product information and process inventory data.

● Integrated Amazon Catalog API, Amazon product listing, and cDiscount marketplace functionality.

● Worked with large inventory datasets using stored procedures, caching, and temporary tables to improve data-processing performance.

● Coordinated development tasks and mentored a team of 3 developers. Environment: PHP, CodeIgniter, MySQL, JavaScript/jQuery XMEDIA SOLUTIONS — Chennai

Junior Web Developer 2013 – 2014

● Developed multiple e-commerce websites using Core PHP and platforms such as OpenCart, osCommerce, and osclass.

● Developed a house rental website with Google Maps integration. EDUCATION

B.Tech — Information Technology

Jaya Engineering College 2008 – 2012

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