phelieros

SaaS service for marketing campaign management and advertisement control on media platforms like Google, Instagram, Facebook. Engineered RESTful APIs for Google services(DV360, Google Ads, Google Display Network), boosting customer acquisition by 27%. Created a high-performance service for marketing campaign tracking using FastAPI and RabbitMQ, achieving a 35% better tracking accuracy and accelerating response times by 24%. Led integration of an updated GraphQL API, increasing user engagement by 25% and providing great flexibility in marketing campaign control. Optimized SQL queries for a database with over 30 million rows, reducing query execution times from over 40 seconds to under 1 second. Collaborated with front-end developers to create user-friendly API documentation using Swagger, reducing amount of support requests and developer onboarding time by 40%.

Leading EdTech software developer and systems integrator in Russia providing services for businesses across the country. Orchestrated migration from Django 1.10 to 2.2, achieving a 22% performance increase and a 45% reduction in reported bugs. Developed secure RESTful APIs with Flask and OAuth 2.0 to enhance data protection and compliance with industry standards, leading to zero security breaches reported during audits. Enriched functionality of Vue.js geolocation service to provide users with real-time detailed information about objects on the map, increasing user satisfaction by 18%. Performed data migration that transitioned over 200.000 records from a legacy system to PostgreSQL database, ensuring 99%+ data integrity and minimizing downtime during the process. Overhauled internal libraries using Python 3.6, resulting in a 13% performance boost across applications. Integrated a third-party payment processing service using SOAP protocol, improving system fault-tolerance by 15%.