As a Senior Software Engineer for one year before transitioning to a Technical Lead, I contributed significantly to the development and management of the Core API (initially a monolith, later evolved into several microservices) and oversaw numerous other microservices. This role has been the most knowledge-intensive of my career, often requiring quick problem-solving for issues beyond my direct work. My key responsibilities and achievements include:➢ Enhanced overall backend performance by reducing latency and increasing throughput➢ Utilized Splunk, Prometheus, and Datadog to identify bottlenecks and establish thresholds for auto-scaling.➢ Redesigned parts of the application to improve throughput, including creating a custom workflow system using Sidekiq for load distribution during invoice processing.➢ Set the architecture and development direction for various features.➢ Implemented Sorbet for the Core API, developing custom Tapioca parsers to auto-generate code signatures.➢ Established unit testing guidelines, resulting in more consistent and reliable test coverage.

At Learning Explorer I joined as a Senior Engineer and later advanced to Team Lead, taking over fromthe previous Team Lead in the US. The team comprised 10 members (4 developers, 4 QA, 1 ProjectManager, and 1 Team Lead). My key responsibilities and achievements included:➢ Introduced React.js (v16) and migrated away from jQuery and Coffeescript➢ Developed a MachineLearning proof of concept using Keras with NN on Google Colab to create a model that assigned various subjects (Math, Biology, Geography) and grades (Pre-K, K, Higher Education) to different resources.➢ Held planning meetings with Product to discuss and clarify upcoming major features. Architected features and established the development direction.➢ Set up guidelines for code reviews, unit testing, and feature development➢ Achieved significant backend and frontend performance improvements, increasing the Lighthouse score on heavily trafficked pages to 90%➢ Provided guidance and mentorship to colleagues at all levels of experience.

Joined as a Mid Ruby on Rails Engineer and later progressed to Team Lead. During my stay, I contributed to five projects, collaborated with talented individuals and significantly advancing my career. At the organization level, my key responsibilities and achievements included:➢ Assisted in designing high-level architecture for various features across multiple projects.➢ Provided guidance and mentorship to colleagues at all levels of experience.➢ Led the "Training on the Job" program for Ruby on Rails, introducing individuals without prior web development experience to Ruby on Rails and successfully assigning them to projects.➢ Played a pivotal role in the interviewing process, from creating a Ruby onRails template and establishing a grading system for interviewees to conducting interviews to staffnew and existing projects.➢ Established and led an internal Ruby on Rails community, delivering presentations, facilitating discussions on issues, and fostering knowledge sharing➢ Participated annually in performance reviews, providing valuable feedback and evaluations to support team development and growth