Oguzhan Kahyaoglu

Senior Software Engineer | Full-Stack Developer | United Kingdom (UK)
oguzhan.kahyaoglu@yahoo.com

Passionate about high-performance software development, I specialize in scalable architectures, cloud solutions, and full-stack development. With 12+ years of experience, I have successfully delivered enterprise-grade applications for industries including public safety, law enforcement, and e-commerce.

Expertise & Contributions

  • Test-Driven Development (TDD) & Scalable .NET Architectures: 12+ years of experience in .NET Core/.NET Framework.
  • Frontend Mastery: 2+ years of React, 4+ years of Angular, 12+ years with JavaScript/TypeScript, and expertise in modern UI frameworks.
  • Open Source & NuGet Contributor: Developed multiple high-impact NuGet packages (100K+ downloads).
  • Cloud & Distributed Systems: Extensive experience in Azure, microservices, Kubernetes, and event-driven architectures.
  • Agile & Scalable Development: Strong advocate of KISS, DRY, and YAGNI principles, feature toggling, and trunk-based development.

Professional Experience

As a Senior Software Engineer at Axon, I work on mission-critical public safety solutions used globally by law enforcement agencies. My key contributions include:

  • Optimized large-scale device log ingestion (Taser 7 & Taser 10), reducing processing times from minutes to seconds.
  • Enhanced system scalability: Increased concurrent request handling with .NET performance tuning.
  • Improved API response time: Leveraged HttpClientFactory, reducing API latencies and boosting throughput 5x.
  • Worked on Axon's Commander platform: On-premise solutions for regions with strict data regulations, modernized legacy architectures.

Technical Stack

.NET Core, Java/Kotlin, Angular, JavaScript/TypeScript, Azure (Functions, Service Bus, Storage, App Services), Resharper/Rider, MassTransit, Mediatr, CQRS, Entity Framework, xUnit, Hangfire, Jenkins, TeamCity, Octopus, Selenium, and more.

Connect with Me


Skills

Backend Development
  • Resharper, Rider & Webstorm (Long live Jetbrains products! )
  • C#
  • .net core (9+ Years)
  • Java/Kotlin (6 months)
  • MVC
  • Entity Framework, Entity Framework Core, Dapper, LLBLGEN
  • CQRS
  • Unit Test (xUnit)
  • Design Patterns
  • WCF Services
  • Rest Apis, OOP, Object Oriented Design
  • Nuget Package Development (see my nuget profile)
  • CI/CD: Jenkins, Teamcity, Octopus
  • Microsft SQL Server, Redis, MySql, Cosmos DB (a little bit)
Cloud Platforms
  • Microsoft Azure (Kubernetes, Storage, Azure Functions, AppServices, Service bus, application insights)
  • Amazon Web Services (AWS)
Frontend Development
  • Angular 8+
  • CSS/LESS
  • HTML/Javascript
  • jQuery
  • Photoshop
OTHER
  • UML standards
  • Git, CQRS and writing REST APIs
  • Extracting business logic from existing software written in different techno
  • Writing anti-corruption layers

Experience

Software Engineer II

Axon Public Safety

At Axon, I develop mission-critical public safety solutions used by law enforcement agencies worldwide. I focus on high-performance .NET architectures, cloud-based scalable solutions, and device log ingestion pipelines.

  • Optimized Taser 10 & Taser 7 device log ingestion: Increased throughput from 8 to 400 Virtual Users (VU) in K6 load tests.
  • Reduced database query times: Improved API response from 2 minutes to 3 seconds by eliminating unnecessary tracking overhead.
  • Enhanced large-scale processing: Optimized memory allocation & garbage collection, reducing timeout failures under heavy load.
  • Modernized legacy systems: Migrated on-premise applications to scalable .NET Core solutions.

Tech Stack: .NET Core, C#, Azure (Functions, Service Bus, Storage, App Services), Entity Framework, xUnit, MassTransit, Mediatr & CQRS, Hangfire, TeamCity, Octopus, React, SQL Server

June 2023 - Present

Senior Software Developer (SDE 2)

Amazon

As part of the Alexa Shopping Multimodal Experiences team, I developed rich voice-first shopping experiences using AWS, Java/Kotlin, and Alexa Presentation Language (APL).

  • Developed scalable backend services for Alexa Shopping, improving query performance and reducing latency.
  • Implemented multimodal UI experiences using APL, enabling seamless voice and screen-based interactions.
  • Enhanced cloud infrastructure: Optimized AWS Lambda functions & DynamoDB queries for faster response times.

Tech Stack: AWS, Java/Kotlin, Alexa Presentation Language (APL), DynamoDB, Lambda, many other internal tools

October 2022 - May 2023

Software Architect

Enerjisa Üretim

Led enterprise software projects powering power plants across Turkey. Focused on high-performance .NET & Angular applications in a fully Agile environment.

  • Developed scalable enterprise platforms: Built applications using .NET Core & Angular, ensuring high availability & performance.
  • Implemented automated testing pipelines: Ensured robust unit & UI testing to maintain software quality.
  • Optimized microservices & API architecture: Integrated AspNetZero & AspNetBoilerplate frameworks for modular development.

Tech Stack: .NET Core, AspNetBoilerplate, AspNetZero, Angular, TypeScript, SQL Server

Jan 2019 - September 2022

Lead Developer

Vektora

As a Lead Engineer, I spearheaded large-scale system integrations and internal frameworks.

  • Built & maintained enterprise integrations for Vestel, Regal, Garenta, handling high-traffic workloads.
  • Developed internal frameworks used across multiple projects, improving development efficiency.
  • Led a team of developers: Conducted code reviews, mentorship, and best practice implementations.

Tech Stack: .NET Core, MVC, Entity Framework, SQL Server, Heroku, Git/SVN, JavaScript

Dec 2016 - Jan 2019

Senior Full-Stack Developer

Hostamedia Web Agency

Started as a Junior Developer and quickly grew into a Senior Full-Stack Developer role. Developed high-performance CMS integrations for leading hotel brands.

  • Developed custom CMS plugins for The Marmara Hotels, The House Hotels, and Avantgarde Group.
  • Implemented back-end integrations for hotel booking & reservation platforms.
  • Optimized legacy systems: Upgraded existing applications, improving performance and security.

Tech Stack: .NET 3.5, WebForms, LLBLGen, SQL Server, jQuery, SVN

Oct 2012 - Nov 2016

Education

Bogazici University

Management Information Systems

Within the enjoyful department of MIS , I had education about numerous topics of business life additional to software development.
Additionally, I had extra courses from Computer Science and BIS Departments which would be helpful in my future life, in my opinion.
When it comes to my thesis, I created a project using AHP algorithm of Decision Support Systems.

GPA: 3.05

2007 Sep - 2012 Jan

Maçka Akif Tunçel ATL High School

Computer Software Development
Computer science tack
2003 Sep - 2007 Sep

Portfolio

Taser 10 Integration link

Axon Public Safety

Developed a high-performance device log ingestion pipeline for Axon's latest-generation Taser 10, enabling law enforcement agencies to process and analyze critical usage data in real-time.

  • Reverse-engineered undocumented device logs to build a structured parsing mechanism.
  • Optimized binary log ingestion for faster processing and reduced storage overhead.
  • Enhanced API scalability: Increased throughput from 8 to 400+ Virtual Users (VU) using .NET optimizations.
  • Ensured regulatory compliance: Processed taser usage logs to help agencies track and monitor real-world deployments.

Tech Stack: .NET Core, C#, Azure (Functions, Service Bus, Storage), Entity Framework, xUnit, MassTransit, Mediatr, Hangfire, SQL Server

2023 - Present

PPM (Power Plant Management)

Enerjisa Üretim

Developed a scalable enterprise application for power plant management, used across multiple facilities in Turkey. Implemented real-time monitoring, reporting, and automation features.

  • Built microservices-based architecture for improved maintainability and scalability.
  • Integrated automated testing pipelines to ensure software reliability.
  • Leveraged Angular & .NET Core for a modern, responsive UI.

Tech Stack: AspNetBoilerplate, AspNetZero, Angular, TypeScript

2020 - 2022

Kale Community Portal

Vektora

A Facebook-like platform for handymen, integrating with Salesforce and running on Heroku. Designed to facilitate networking, job listings, and community engagement.

Tech Stack: .NET Core, Redis, Heroku, MongoDB, PostgreSQL, Hangfire

2019

YKK

Vektora

A complex project involving multiple web applications, APIs, Windows services, and background jobs, all built using .NET Core.

Tech Stack: .NET Core

2019

Garenta Rent a Car link

Vektora

Developed web and branch management systems for a leading car rental service. Integrated third-party services and optimized backend performance.

Tech Stack: .NET Core

2017

Vestel.com.tr link

Vektora

Provided ongoing support for Vestel.com.tr, one of the highest-traffic sites in Vektora. Optimized integrations, enhanced site performance, and maintained CRM/SAP connections.

Tech Stack: .NET MVC, jQuery, LESS

2018

The Marmara Hotels Collection link

Vektora

Developed and maintained the The Marmara Hotels Collection website, which was a finalist in the prestigious Altın Örümcek Awards.

Tech Stack: .NET WebForms, jQuery, LESS

2018

Certifications

  • Professional Scrum Master I link