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Konstantin Kelle
Looking for a jobSenior Backend Developer
Backend Engineer at VK, developing services for MAX Messenger; founded Kelle Software and delivered a fuel-station platform.
BelarusSenior Backend Developer at VK
Experience
Senior Backend Developer
Develop backend services for the business-focused platform of MAX Messenger using Go, Java and PHP/KPHP. Contribute to production backend engineering, service maintenance, and technical collaboration in a large technology organization.
GoJavaPHPBackend DevelopmentMicroservicesAPI DesignDistributed Systems
Founder & Engineering Lead
Founded and led a software development company, managing an engineering team delivering a software platform for a fuel station network. Oversaw backend services, mobile applications, and integrations with payment gateways and fuel dispensing equipment.
GoJavaPHPPostgreSQLMySQLRedisRabbitMQMongoDBElasticsearchKafkaDockerKubernetesCI CDgRPCMicroservicesSystem ArchitectureNetwork Security
Backend Engineer
Developed backend functionality for a production platform handling 4,000+ requests per second; project details are under NDA.
Backend Developmenthigh load systemsPerformance Optimization
Full-Stack Developer
Independently developed backend functionality for a gas-station network mobile application, including payment-acquiring integration and fuel-dispenser equipment APIs. Built loyalty and bonus features, barcode flows, push notifications, and an administration interface.
Backend DevelopmentMobile AppsPayment IntegrationAPI IntegrationLoyalty ProgramsPush Notifications
Web Developer
Worked on a high-load product serving millions of users, coordinating with a large engineering team and other departments; details under NDA.
Web Developmenthigh load systemsTeamwork
Full-Stack Developer
Developed websites for gaming projects.
Fullstack DevelopmentWeb Development
Full-Stack Developer
Developed marketplace and freelance-platform solutions.
Fullstack DevelopmentMarketplace DevelopmentFreelance Software Development
Education
Siberian State University of Telecommunications and Information Sciences
Bachelor's studies in Computer Science and Information Technology, expected completion in 2028.
Bachelor's studies in Computer Science and Information Technology, expected completion in 2028.