Utku Aysev

Experience

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  Comodo

  Dec 2017 - Dec 2018

  Software Engineer

  Established an internal web app using Java, Spring Boot, PostgreSQL, and Hibernate to automate employee performance evaluations, simplifying average score calculations and managing complex relationships, aiming to reduce HR workload from weeks to days.Collaborated with HR through weekly meetings to refine and optimize the automation tool, addressing specific HR process requirements.

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  HAVELSAN

  Jan 2019 - Apr 2019

  Software Engineer

  -Develop desktop application for testing simulation tools -A desktop application for testing simulation tools was developed using C++ and Qt.

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  Everva Bilişim

  Jun 2019 - Jan 2021

  Java Developer

  •Designed microservices architecture for real-time geospatial data delivery to Ministry of Trade using Java Spring Boot and Docker.•Integrated third-party APIs for enhanced GIS capabilities, providing real time insights on trade routes and market locations.•Optimized database queries by 35% using PostgreSQL, PostGIS and Cassandra for efficient spatial data analysis.

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  Sebit Information & Education Technologies Inc.

  Mar 2021 - Mar 2022

  Software Engineer

  -Enhanced educational technology solutions for nationwide EdTech products by leveraging microservices architecture with Java, Spring, Docker, and Maven, while utilizing databases like PostgreSQL, Cassandra, Elasticsearch, and caching solutions as Redis and Memcached.-Implemented Kafka to build resilient and scalable event-driven architectures, ensuring efficient communication between systems comprising 5 microservices.-Conducted comprehensive SQL queries within PostgreSQL and Cassandra on a dataset from over 13 million user records, extracting actionable insights to enhance learning experiences.-Created dynamic cluster binding in Elasticsearch to improve user accessibility, ensuring seamless access to previous year's messages. Show less

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  Hepsiburada

  Mar 2022 - Aug 2023

  Software Engineer

  -Engineered a microservices architecture on GCP using Java, Spring Boot, PostgreSQL, Kafka, RabbitMQ, Druid, and Superset, improving real-time click-stream data processing efficiency by 30%.-Supplied live data to systems like recommendations and dashboards, achieving over 99% uptime throughout the year and collaborating with cross-functional teams for strategic decision-making.-Managed scalable data pipelines on the cloud processing over 100TB of data daily with Spring Boot, Kafka, BigQuery, Druid, and Superset ensuring real-time high data quality and integrity.-Implemented a Python cron job on Google Kubernetes Engine to leverage BigQuery, integrating a Slack alert system for real-time notifications to business analysts, resulting in a 40% reduction in data errors.-Created an internal web-based tool with Spring Boot, PostgreSQL, and Hibernate to streamline data format updates, reducing update time from 3-5 days to thirty minutes, improving efficiency for business analysts.-Managed over 35,000 requests per second on peak Black Friday by implementing a rigorous testing process, adjusting auto-scaling configurations and Google Cloud VMs, for seamless data streaming.-Utilized Grafana and Prometheus to monitor system performance, processing statistics for up to 70,000 users per second and enhancing real-time data accuracy. Show less

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  Moody's Corporation

  Sept 2024 - now

  Associate Software Engineer