Senior Full-Stack PHP/JS Developer
Resume:
RANJITHKUMAR M
**************@*****.*** www.linkedin.com/in/ranjith-kumar-m-b42260176/
**, **** ******, ************, ************* (PO), Mannachanallur (TK), Trichy (DT) – 621009 PROFESSIONAL SUMMARY
Senior Full-Stack Developer with 7 years of experience in designing and developing scalable POS and financial web applications using PHP (Laravel), React JS, Angular, and modern JavaScript/TypeScript. Strong expertise in REST API architecture, MySQL query optimization and performance tuning. Experienced in handling high-volume billing systems, concurrency control, and end-to-end system ownership from architecture to deployment.
TECHNICAL SKILLS
Front-End: React JS, HTML5, CSS3, JavaScript, jQuery, Angular, Bootstrap, Material UI Back-End: PHP (Laravel, Codeigniter, CakePHP) and Node JS Databases: MySQL, MongoDB
Dev Tools: Git, VS Code, Postman, Navigate Premium Others: Apache Solr
OS: Windows, Linux
Specializations: Mysql Optimization, Migrations
PROFESSIONAL EXPERIENCE
Senior Programmer
Kliotech LLP, Chennai Jun 2021 – Dec 2025
Domain: Retail & POS Product Development
Responsibilities:
● Developed and maintained backend features using PHP, MySQL and MongoDB, improving system performance and scalability.
● Built responsive, dynamic UIs using React JS, Angular, jQuery, and Bootstrap, enhancing user experience and engagement.
● optimized MySQL schemas with strict data integrity Impact:
● Improved API response time by optimizing database queries (MongoDB, MySQL), removing unused code, and moving time-consuming operations to background jobs, leading to a notable boost in system efficiency and user experience.
● Ensured data consistency across all modules (billing, POS, inventory).
● Helped prevent data duplication, mismatched records, or invalid entries.
● Built APIs and backend modules for retail software (inventory, orders, billing, etc.).
● Improved response times by optimizing queries, caching, and code structure.
● Implemented smooth UI interactions, validations, and dynamic content loading. Junior Programmer
Harsha Infotech, Trichy Dec 2018 – Jul 2021
Domain: Financial Software
Responsibilities:
● Built and maintained PHP based web applications.
● Handled backend logic, UI improvements, and issue resolution.
● Supported deployment processes and client requirements.
● Developed secure financial modules using PHP, MySQL (billing, invoices, ledgers, reports)
● Designed optimized MySQL schemas with strict data integrity and ACID compliance.
● Implemented financial calculations, double-entry accounting, tax/interest modules.
● Built dashboards and financial analytics with optimized SQL queries.
● Integrated payment gateways and external financial APIs.
● Ensured security, audit trails, role-based access, and compliance.
● Improved system performance and handled large-scale transaction data. EDUCATION
B.Voc SD & SA (Bachelor of Software development and system Administration) St. Joseph’s College, Trichy (2015 – 2018) – CGPA: 8.06 / 10 Higher Secondary (Class XII - Maths, Physics, Chemistry) Govt. Higher Secondary School, Thumbalam (2014 – 2015) – 72.42% SSLC (Class X)
Govt. Higher Secondary School, Thiruvellarai (2012 – 2013) – 93.20% PRODUCT ENGINEERING STRENGTHS
● Database Performance Optimization
● API Scalability & Clean Architecture
● High-Volume Billing Systems
● Concurrency & Data Integrity
● End-to-End Feature Ownership
● Performance Tuning & Refactoring
SOFT SKILLS
● Fast Problem Solving & Debugging
● Speed Optimization & Background Processing
● Strong Communication with Stakeholders
● Positive, Collaborative Attitude
LANGUAGES
● Tamil (Native)
● English (Professional Proficiency)
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