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Zhaken Yerbolat

@zhakenyerbolat

Technical lead at Kaspi.kz, directing Kaspi Shop advertising services; previously architected banking microservices processing millions of records monthly.

Kazakhstan

Message

At Kaspi.kz, I lead the Advertising engineering team within Kaspi Shop, owning the technical direction and delivery of advertising services. I coordinate architecture decisions and development priorities while working with product and business teams.

At Bank CenterCredit, I led the backend of the digital mortgage domain, designing and delivering systems for 100,000+ active users. I evolved its distributed, event-driven microservices architecture and implemented services handling millions of records monthly.

I automated 30+ business processes on Camunda BPM and optimised PostgreSQL and Oracle performance by 30–40%. I also integrated 10+ systems and helped maintain 99.9% uptime.

At Tuyndy Media, I co-founded the startup and built its MVP backend from scratch on Java and Kotlin. I designed the architecture, data model and services, and continue to make technical and product decisions and implement external integrations.

Experience

Work history, roles, and key accomplishments

Current

Team Lead

Current

Kaspi.kz

Apr 2026 - Present (6 months)

Lead the Advertising engineering team within Kaspi Shop, owning technical direction and delivery of advertising services. Coordinate architecture decisions, development priorities, code reviews, and cross-functional delivery with product and business teams.

Go Kafka Microservices Kubernetes

Current

Co-founder / Backend Engineer

Current

Tuyndy Media

Jan 2022 - Present (4 years 9 months)

Co-founded the startup and own the end-to-end backend architecture. Designed the system architecture, built the MVP from scratch on Java/Kotlin, and implemented integrations with external services and APIs.

Java Kotlin API Design Third Party Integrations

Senior Software Developer / Team Lead

Bank CenterCredit

Oct 2023 - Apr 2026 (2 years 6 months)

Led backend of the digital mortgage domain, designing and delivering systems for 100,000+ active users. Defined target system architecture with distributed microservices and event-driven integration on Kafka, and automated 30+ business processes on Camunda BPM.

Java Kotlin Go Spring Boot Camunda BPM Zeebe Kafka PostgreSQL Oracle Redis Kubernetes

Senior Software Engineer

Freedom Bank Kazakhstan

Jan 2021 - Dec 2023 (2 years 11 months)

Built backend systems serving 50,000+ daily users and designed services for critical banking operations. Developed high-load reporting systems processing millions of records and integrated telecom systems (Asterisk) supporting hundreds of operators.

Java Spring Boot PostgreSQL High Load Reporting Asterisk

Software Engineer

Bank CenterCredit

Jan 2019 - Dec 2021 (2 years 11 months)

Developed backend services for credit scoring systems (retail & SME) and implemented REST APIs for financial products. Integrated fraud detection systems and designed database schemas, optimizing queries in PostgreSQL.

Java Spring Boot REST PostgreSQL