Software Engineer Java Developer

UTKU AYSEV

Charlotte NC, 641-***-****

*********@*****.***

Linkedin, Portfolio

Work Experience

Hepsiburada Istanbul, Turkey

Data & Software Engineer Mar 2022 - Aug 2023

• Crafted a Spring Boot internal web app with Hibernate and PostgreSQL, integrating RESTful services and writing Junit tests to streamline data format updates for inner clients from 4 days to 30 minutes.

• Managed a clickstream data pipeline on Google Cloud Platform (BigQuery, BigTable) using Java (Spring Boot) microservices and Python scripts, ensuring 99.4% uptime.

• Managed traffic loads, processing around 100 TB of data on Druid during peak times by adjusting GCE virtual machines for seamless performance.

• Delivered real-time E-commerce data to critical systems like recommendation, accomplishing 30% faster data processing with Kafka.

• Employed Grafana and Prometheus for real-time system performance monitoring, ensuring up to 70,000 users per second.

• Optimized GitLab CI/CD for GKE with Docker and Maven, reducing release times by 30%. Sebit Ankara, Turkey

Software Engineer Feb 2021 - Mar 2022

• Developed scalable, event-driven Java (Spring, Maven) microservices for nationwide EdTech system, improving system efficiency by utilizing PostgreSQL, Cassandra, Elasticsearch, Redis, Kafka, Memcached, and Jenkins

• Delivered user behavior insights to government stakeholders by analyzing a 13 million user dataset stored in PostgreSQL and Cassandra.

• Resolved user accessibility issues by implementing dynamic cluster binding in Elasticsearch. STM Ankara, Turkey

Software Engineer Sep 2019 - Jan 2020

• Implemented a Neo4j graph database for cybersecurity vulnerabilities and entities, enhancing risk assessment with similarity algorithms.

• Developed a Named Entity Recognition model, stored results in MongoDB, and displayed them in a Python Flask application. Comodo Ankara, Turkey

Software Engineer Jan 2018 - Dec 2018

• Implemented a Java web app with Spring Boot, PostgreSQL, Hibernate and Docker to automate employee performance evaluations, reducing HR workload from weeks to days.

Education

TOBB University of Economics and Technology Ankara, Turkey Bachelor of Science in Computer Science Jan 2015 - Jan 2020 Projects

Job Search Sculptor 2024

• Crafted a Streamlit app using Python for managing job applications by scraping, filtering, tracking job descriptions and generating personalized cover letters using OpenAI's API.

Rental Car Application 2023

• Built a rental car application website using Node.js, Express, JavaScript for seamless user interaction. Real Estate Agency Admin Tool 2022

• Developed a real estate contract tracking system using Python, Flask, SQLite, Javascript. Skills

• Java, Spring Boot, Hibernate, Junit, Python, Flask, Javascript, NodeJs, Express, Maven, GitLab CI/CD, Data Structures

• Cloud Computing, GCP, BigQuery, GKE, GCE, GCS, AWS, RDS, EC2, DynamoDB, S3, Grafana, Prometheus

• Linux, Kafka, PostgreSQL, MongoDB, Cassandra, ElasticSearch, Redis, Memcached, RESTFUL Web Services

• OOP, Singleton, Spring MVC, Visitor Design Pattern, Software Architecture, Agile, JIRA, SCRUM, SDLC, Docker

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