Sumitra Mali

Senior Ruby on Rails Developer with 9 years of hands-on experience designing, building, and scaling enterprise web and mobile applications.

Deep expertise across the Rails stack: RESTful API design, PostgreSQL/MySQL optimization, background job processing (Sidekiq, Redis), authentication and authorization (Devise, JWT, Doorkeeper, RBAC), and production deployment. Built core modules of an ERP platform and a Zoho Books-inspired financial management system, including invoicing, accounting, taxation, and reporting. Comfortable owning features end-to-end in Agile environments, with additional experience mentoring developers and conducting code reviews.

Senior Ruby on Rails Developer (Engineering Head) - Samshik Infoline Pvt Ltd - Mumbai, India

(2019-04 - 2026-05)

• Built and maintained scalable Ruby on Rails REST APIs and React / React Native applications supporting multiple business domains and client-facing products.
• Improved application response times by 30% and overall system performance through database query optimization, Redis caching strategies, and Sidekiq background job processing.
• Architected and built a financial management platform (Zoho Books-inspired) covering invoicing, accounting, taxation, and financial reporting modules used across the business.
• Led end-to-end architecture, development, and delivery of a custom ERP platform for a major enterprise client, managing stakeholder coordination from requirements through production rollout.
• Implemented secure authentication and authorization using Devise, JWT, and Doorkeeper, with role-based access control (RBAC) enforced across all platform modules.
• Owned production deployments, system monitoring, and performance tuning to maintain platform stability and uptime.
• Directed a cross-functional engineering team of 3-4 developers, improving delivery velocity and code quality through structured code reviews, sprint planning, and technical mentoring.
• Conducted technical interviews and led hiring and professional development for engineering team members.

Senior Software Developer - Seek2Share Pvt Ltd - Mumbai, India

(2016-10 - 2019-01)

• Developed Ruby on Rails web applications and RESTful APIs powering web, iOS, and Android client platforms.
• Managed server configuration, deployment pipelines, and production support to ensure application reliability.
• Delivered new features, enhancements, and data migration projects while resolving production bugs under deadline pressure.
• Applied MVC architecture principles to maintain clean, scalable, and maintainable application codebases.

Trainee & Junior Software Developer - Allerin Tech Pvt Ltd - Mumbai, India

(2014-12 - 2016-06)

• Built and maintained web applications using Ruby on Rails, JavaScript, HTML, CSS, and Bootstrap.
• Performed requirement analysis and translated business needs into working feature implementations.
• Supported ongoing enhancements, application maintenance, and production issue resolution.

Bachelor of Technology - B.Tech - Usha Mittal Institute of Technology, Mumbai, India (2010 - 2014)