Erkan Onat

Databoss is a fast-growing software company that specialized for software intensive Big Data Analysis systems and AI products.

• Designing production-ready systems for the Databoss LLM (large language model) product family, some of which are Chatboss, Codeboss, Translator, and Talk2doc.
• Preparing deployment scripts like docker files, kubernetes yamls, helm charts of the products
• Developed, tested, scalable, reliable, and resilient distributed systems with tools such as Apache Kafka, Apache Spark, Airflow, ELK Stack, and gRPC.
• Experienced in using tools such as Docker and Kubernetes to deploy and scale data pipelines and applications.
• Designed and built RESTful APIs and microservices using FastAPI and Spring Boot.
• Perform load tests on web-based systems and web services with Locust scripts.
• Leading a software development team.s of software development team

Havelsan is a leading technology company in Turkey. It designs high-tech, software-intensive products, solutions, and services for the armed forces, as well as the public and private sectors. Main areas are command control systems, simulation, communication and autonomous systems.

• Develop and maintain a cloud-based, multi-tenant, scalable IoT platform, and integrate it with devices and third-party systems for different domains, such as security, energy management, and smart, sustainable cities.
• Design and develop adapter services that communicate with different third-party systems by using MQTT, HTTP, protocols.
• Develop RESTful web service
• Implement microservices for integrating the product with different systems.ems.
• implement backend components of the spring boot application.
• Integrating the Kafka message queue system for asynchronous communications between microservice components.
• Integrate gRPC adapter service to collect alarms from camera systems.
• implement some front end part of the application by angular framework
• Managing and mentoring the development team, participating in product and stakeholder meetings.

Technology stack: Docker, Kubernetes, Helm, OpenStack, Elasticsearch, Grafana, Prometheus, MQTT, HTTP, CoAP, REST web services, Apache Kafka, Redis, PostgreSQL, Maven, Java, Python, Angular, Spring Boot, Data Security, Spring Cloud, microservice architectures and patterns, and OOP practices.

Cybersoft is software development company which produce products on insurance, finance, banking domain.

• Worked as a senior software engineer in the finance and payment team that developed the finance application from the scratch
• Developed, tested, and maintained software applications using java and spring boot .
• Implementing different parts of the application such as integrating third party payment systems and banking services.
• developed scheduled jobs for periodical processes.

Technology stack: Java11, Eclipse, Git, Stash, Maven, Hudson, Bamboo, Spring Framework, SOA and Rest web services, JPA, Hibernate for OR Mapping, Quartz, log4j, Docmosis for template engines, Ehcache, Side IDE that is cybersoft's built-in tool for user interface design

• I joined a team which developed IKWEB project which is an end-to-end web application for human resources department of the company
• The HR department's staff can manage all candidates' operations and can be able to manage all processes of recruitment
• Technologies: java8, Java server faces, Primefaces, Spring Boot, JPA, Hibernate, Jasper Reports, jUnit, Mockito, maven, weblogic server, jenkins

• Contributing as an associate software consultant for an upgrade project of corporate banking web application of YapiKredi
• We implement related modules of the banking web application according to business analysts requirements
• Technologies: java, spring mvc, jsp, pl/sql, maven, hibernate, jpa, jenkins, bitbucket, git, eclipse

• Worked as java developer and involved in SimBusPro Gateway project which is part of the EU 7th Framework Project 'SCI-BUS'
• It's a simulation application for business process management
• Project is being carried out with Java, JSP, MySQL, SQLite, with help of Distributed Computing Infrastructures, and context is handled with respect to BPMN2 standards

• Worked as a part time software developer for emergency code call and messenger application for doctors needs
• Technologies: java, android application development, websocket, xmpp, mqtt, writing unit and integration tests