Site Reliability Engineer
2019 - PRESENTGoogle- Held the position of an SRE for Google Cloud Service Infrastructure.
- Managed a rollout infrastructure migration with zero downtime for a service that receives more than 40 million queries per second.
- Led an internal team of four people as a part of my role.
Technologies: C++, Java, Go, Python, Distributed Systems, Infrastructure, Fault Tolerance, Design for Failure, Object-oriented Programming (OOP), Concurrent ProgrammingSoftware Engineer
2017 - 2019Picus Security- Implemented a new license manager service that would help both DevOps and support for managing client licenses.
- Created a new attack module called scenario attacks that play between two node machines and performs, step by step, a series of vulnerability exploitations.
- Applied new messaging protocols for a multithreaded "engine" environment.
- Migrated a codebase from an old SQLite library to a new one by using Haskell's type safety.
- Co-created a Go library that has both client and server sides and can simulate a data exfiltration attack in the process of a scenario attack. Also integrated this Go library to our Haskell codebase and Nix architecture.
- Split our existing Jenkins end-to-end test suite into parts.
- Defined the dependencies in these separate parts and made it possible to have separate reports for each part of the end-to-end suite.
- Applied Nix's caching mechanism to optimize evaluation time for the suites.
- Created a token authentication mechanism solely for DevOps.
- Implemented a series of API endpoints for the DevOps team to help them automate their workflows.
Technologies: Amazon Web Services (AWS), Hydra, Unix, HaskellSoftware Engineer
2016 - 2017Paraşüt- Designed a new subscription flow using finite automata modeling.
- Developed a customer management system for the support team using Coffee.js. The application is modeled as a tree and could be expanded to see the details.
- Integrated new data analytics using Amazon SNS and SQS for messaging, Firehose for the data flow, and Redshift as the database platform.
- Implemented new features with Ruby on Rails, a service object with a TDD principle with +96% test coverage.
- Created new libraries using Plain Old Ruby Objects (PORO) and introduced new abstractions using Ruby's metaprogramming features.
Technologies: Docker, Ruby on Rails (RoR), RubyLead Developer
2015 - 2016Evbana.com- Maintained a Laravel back-end application, as well as the front-end.
- Created monitoring systems to constantly check up on the availability of our systems.
- Built various microservices including the ones for data integration and mail notifications.
- Discovered, with a team, a vulnerability and subsequently improved the security of the system by applying penetration testing for the continuous assessment of vulnerabilities.
- Created multiple services using service objects, including services for our Slack and MailChimp integrations.
Technologies: Amazon Web Services (AWS), Laravel
Yiğit Özkavcı
Software Developer in London, United Kingdom
Member since October 22, 2018
Since 2015, Yiğit's been developing apps with Ruby on Rails and working with Haskell and functional programming. An open-source enthusiast, he's developed his own programming language via open sources, maintained a Haskell client for the DigitalOcean API, and contributed to a number of Ruby and Haskell projects. Yiğit is also not new to the remote working scene, communicates extremely well, and loves TDD and good documentation.
Yiğit is now available for hire
Portfolio
- GoogleC++, Java, Go, Python, Distributed Systems, Infrastructure, Fault Tolerance...
- Picus SecurityAmazon Web Services (AWS), Hydra, Unix, Haskell
- ParaşütDocker, Ruby on Rails (RoR), Ruby
Experience
- Object-oriented Programming (OOP) 5 years
- Ruby 4 years
- Ruby on Rails 5 4 years
- Linux 4 years
- Functional Programming 3 years
- Concurrent Programming 3 years
- Haskell 3 years
- Laravel 5 2 years
Availability
Part-time
Preferred Environment
Source Control Management, Linux
The most amazing...
...thing I've developed was Cenary: a programming language for developing smart contracts.
Employment
Experience
- Cenaryhttp://github.com/cenary-lang
I developed this programming language in order to write Ethereum smart contracts. It's written with Haskell and currently usable for writing small smart contracts.
- Typed Webdriverhttps://github.com/yigitozkavci/typed-webdriver
Webdriver is a client library for Jenkins in Haskell. With Typed Webdriver, people are able to verify their XPath expressions and their capabilities at compile time. So basically, if you want to click to an element with the tag "span", your code won't compile.
- C-RPChttps://github.com/yigitozkavci/c-rpc
A C program demonstrating remote procedure calls.
- DigitalOcean Haskell Clienthttps://github.com/inzva/DOH
A Haskell client for using the DigitalOcean API.
- Glow: A Toy Programming Language Written for LLVMhttps://github.com/yigitozkavci/glow
Glow is a programming language compiled with LLVM compiler architecture.
- Haskell Client for Hurriyet APIhttps://github.com/yigitozkavci/hurriyet-haskell
Hurriyet was the top news provider at the time of this project's writing. This client library helps us use their API in Haskell.
- Hoogle-It: A Chrome Extension for Haskell Documentation in the Browserhttps://github.com/yigitozkavci/hoogle-it
Hoogle-It is a Chrome extension and after it is installed, it lets a user select a text containing a valid Haskell expression and then shows documentation for that text using the Hoogle API.
- Tetrelm: A Tetris Game in the Browser Written in Elmhttps://github.com/yigitozkavci/tetrelm
The title says it all, this is a toy game project where I wanted to learn Elm better by doing it, and the result was amazing.
- Type-Level Dijkstra's Shortest Pathhttps://github.com/yigitozkavci/typelevel-dijkstra-sp
Dijkstra's shortest path algorithm implemented at the type level. Basically, when the code compiles, before running it, it can give an answer to a graph's shortest path between two nodes.
Skills
Languages
Ruby, Haskell, JavaScript, Elm, Java, C++, Go, PHP, PythonFrameworks
Ruby on Rails (RoR), Ruby on Rails 5, Laravel 5, Laravel, Hydra, DjangoParadigms
Object-oriented Programming (OOP), Functional Programming, Concurrent Programming, Design for FailurePlatforms
Linux, Docker, Unix, Amazon Web Services (AWS)Other
NixOS, Source Control Management, Distributed Systems, Infrastructure, Fault ToleranceLibraries/APIs
Twitter API, Facebook Open Graph API, Foursquare APITools
JenkinsStorage
SQLite, PostgreSQL, MySQL
Education
- Bachelor's Degree in Computer Engineering2013 - 2018Boğaziçi University - Istanbul, Turkey
