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Yalin Eren Deliorman

@yalinerendeliorman

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Senior Backend Engineer at KTO Group who cut wallet transaction p99 latency 66% on a real-money iGaming platform.

Canada

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At KTO Group, I own the wallet transaction path for a real-money iGaming platform. I built seamless wallet integrations with two game providers, including idempotent debit, credit, and rollback handling.

I drove query consolidation that cut wallet transaction p99 latency 66%, and led partition pruning on a 10-billion-row PostgreSQL transaction table. I also delivered regulatory payout changes and production monitoring improvements.

Before KTO Group, I designed warehouse automation services at Körber Supply Chain and contributed to GeoServer and GeoTools at GeoSolutions. Earlier, I worked on large-scale inventory integrations at Nokia and backend systems for UAV mission planning and helicopter avionics programs at Ayesas.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer (Backend)

Current

KTO Group

May 2024 - Present (2 years 5 months)

Senior Backend Engineer on a real money iGaming platform, owning the wallet transaction path and leading performance improvements, including a 66% reduction in wallet transaction p99 latency. Delivered regulatory features, built seamless wallet integrations, and improved observability and security across microservices.

Java Spring Boot PostgreSQL Kafka AWS Kubernetes Microservices Event Driven Architecture Idempotency Dynamic Partition Pruning Query Optimization Coralogix Cloudflare API Shield Snyk JaCoCo Playwright Feature Flags

Senior Software Engineer

Körber Supply Chain

Apr 2022 - May 2024 (2 years 1 month)

Designed and built services within a 15+ microservice estate orchestrating warehouse automation, including inventory allocation and integration with Geek+ robot fleets. Built CI/CD pipelines and database change management.

Java Spring Boot RabbitMQ Microservices Azure DevOps Liquibase Warehouse Automation Inventory Allocation

Software Engineer

GeoSolutions

Jul 2021 - Apr 2022 (9 months)

Contributed to open source GIS projects GeoServer and GeoTools, improving WFS-T transactions, adding JSON feature templating, and enhancing pipeline throughput. Worked on European Maritime Safety Agency projects.

Java Geoserver GeoTools GIS WFS JSON REST Multithreading Queue Design

Software Engineer

Nokia

Nov 2019 - Jul 2021 (1 year 8 months)

Redesigned a 50M+ user inventory integration to bulk transfer, reducing daily API requests from 500,000 to 10. Automated recurring jobs, cutting monthly work from 6 days to 5 minutes.

API Design Bulk Transfer Automation Java

Software Engineer

Ayesas

Apr 2017 - Nov 2019 (2 years 7 months)

Engineered gRPC/Spring backend for distributed UAV mission planning and government helicopter avionics programs, with 80%+ test coverage. Authored design and requirements documentation for Turkey's first indigenous helicopter program.

Java Spring Framework gRPC UAV Avionics Test Coverage Documentation