• As the leading developer to coordinate the team in a small agency focused on local clients, the goal was to create interfaces for new customers where the main focus was to make reusable components that could be used in future projects;• Built out the data and reporting infrastructure from the ground up using SQL to provide real-time insights into the product, marketing funnels, and business KPIs;• Designed and implemented A/B experiments for products to improve the conversion rate and reduce churn by implementing new solutions;• Used experience with front-end development to define the structure and components for the project, kept the quality high review code from other developers, suggesting improvements and making sure they were reusable;• Led the interaction between client and team, suggesting changes and ensuring that their vision of design and functionality could be merged into beautiful and functional interfaces;• Built a logistic experiment model to help the SEO team decide which keywords to target, reaching from zero to Google's first page in 3 months;• Planned, wrote, developed and debugged full-stack web applications that process, analyze and render data visually with complete accuracy;• Maximized applications' efficiency, data quality, scope, operability, and flexibility. Managed time-sensitive updates, including content changes and database upgrades;• Wrote and maintained interfaces with 3rd party providers, including payment gateways and e-commerce maintenance;• Led a team of 2 full-time employees and seven contractors on several simultaneous projects;• Built operational reporting in MySQL and HTML5 to find areas of improvement, resulting in lots of time savings for the company;• Designed, developed, and set up e-mail marketing campaigns;• Implemented a long-term pricing experiment that improved customer lifetime and value, reducing churn by 80%;• Responsible for all the development aspects, from design to server setup and deployment.