Madi Kinzheyev

Lead Software Engineer

Tech lead of a 13-person team building Darlean, an ERP platform. Owned architecture of core microservices, built authorization with Spring Security and OAuth2, and introduced SLO-based monitoring.

JavaSpring Boot 3Spring SecurityOAuthKafkaPostgreSQLKubernetesOpenShiftPrometheusGrafanaMicroservicesEvent Driven Architecture

Software Engineer

Extracted subscription-plan domain into a microservice, reducing release time by 40%. Shipped a subscription service generating $20K monthly recurring revenue and integrated a real-time decision engine that lifted upsell conversion by 17%.

JavaSpring BootPostgreSQLKafkaDockerKubernetesGitlab CIHelmMicroservices

Software Engineer

Part of a squad that rewrote the legacy internet-banking backend in 8 months on Spring Boot and Project Reactor, achieving zero Sev-1 incidents in the first six months. Maintained the payment transaction manager and its validation chain.

JavaSpring BootProject ReactorOpenShiftPayment SystemsState Machines

Junior Software Engineer

Worked as a junior software engineer at ICBC (Almaty), Alterapp, and Astana-Plat.