About Me
Building (and deprecating) software is my passion, with a focus on scalable backend services in the web ecosystem recently. I’m an ex-Amazonian, a certified AWS solutions architect and available for hire on Toptal. I provide AWS training as well. There’s also a personal blog - in Turkish - which serves as a notepad for me; documenting problems, solutions and research about software development.
Keywords: AWS Serverless Python Java
Employment
- Developed serverless web application on AWS.
- Created serverless workflows using AWS Step Functions to integrate with external services.
- Optimized cost resulting in more than 50% saving on AWS bill.
- Improved performance by reengineering caching on CloudFront/S3.
- Mentored developers and reviewed pull requests.
Technologies: Python, Serverless, Lambda, API Gateway, DynamoDB, Cognito, Datadog
- Developed and maintained the orchestration platform that processes Amazon’s catalog updates. The platform is able to handle tens of thousands of TPS, enabling the finest and largest catalog on earth. Uses Kinesis as the backbone and routes updates to the catalog to relevant downstream services.
- Added further functionality to a Node.js service which is a high TPS REST service for diff analysis.
- Refactored an orchestration engine which consumes Kinesis and calls downstream services such that the application can be started without any dependencies, thus enabling performance testing of the core.
- Supported the reconciliation engine (Java 8) that generates the retail catalog.
- Carried out live migrations of several web services without downtime. Successfully deprecated multiple legacy services in an effort to simplify the overall architecture and enable catalog growth.
Technologies: Java, Perl, AWS, Node.js, Linux, Spring, Agile, DevOps, PostgreSQL, ElasticSearch, JavaScript, Docker
- Supported the workflow engine (C#, Windows service) serving banking applications such as loans, customer complaints etc.
- Set up elastic to index workflow engine documents, enabling powerful search mechanisms for the end user.
- Designed and implemented a workforce management system that empowers the bank’s operation center. The application uses Microsoft’s solver foundation to solve the task assignment problem. This project got BAI global innovation award.
Technologies: Microsoft .Net, C#, MSSQL, ElasticSearch, REST, Agile, Unit testing, JavaScript, DevOps
- Designed and implemented workflow engine running on top of Oracle, serving over 100,000 workflow instances daily.
- Served as scrum master and mentored junior developers.
Technologies: Microsoft .NET, C#, WinForms, WPF, Oracle
- Implemented Teletext for the IPTV set-top box using C++.
- Developed a subtitle parser in C.
- Implemented a high-performance transport stream parser in C.
Technologies: C, C++, Busybox, Linux, RTSP, IPTV, Python, Perl, Teletext
CC Soft
Software Engineer
2009
- Designed and implemented a cross-platform desktop client in C++ utilizing wxWidgets GUI toolkit. The client database is SQLite.
- Designed and implemented the corresponding backup server in Java (J2SE). An application-level protocol is implemented for client-server communication, secured via SSL (OpenSSL). Stored files are encrypted (AES).
- Designed (visual design excluded) and implemented a web portal for serving online backup users. Users can download/browse backed up files through the portal. MySQL, Apache web server, and django framework are utilized.
Technologies: Java, C++, wxWidgets, Python, Django, wxPython, OpenSSL, MySQL, Apache web server, Django, SQLite
Education
Amongst the top universities in Turkey, BU has a lovely campus with spectacular views over the Bosphorus.
Studied wireless networks and computer vision in addition to the foundations of computer science. Graduated Cum Laude.
Research interests:
- Distributed systems
- Graph theory
Thesis titled “Parallel maximum flow solver for multi-core machines”.
Certification
A Little More About Me
Hofstadter's Law: It always takes longer than you expect, even when you take into account Hofstadter's Law.
Comfortable taking on work in any tech stack, though Serverless, Java, Python and JavaScript have been a recurring theme in the past few years for me. For details, have a look at my Curriculum Vitae (which may refer you to this page, in that case be conscious about the infinite loop you are in or you might never reach out to me!).
Frameworks/Runtimes
Django Spring Serverless Node.js React Angular
Languages
Java Python JavaScript C# Perl
AWS
CloudWatch SNS Kinesis SQS Lambda Step Functions Cognito IAM CloudFormation CloudFront
Paradigms
Unit Testing DevOps Agile
Storage Solutions
AWS DynamoDB AWS S3 AWS RDS PostgreSQL Oracle SQL Microsoft SQL Server
Miscellaneous
Linux Docker Elasticsearch