Mert Köseoğlu

Software Engineering, LLMs, Agents, Generative AI

Ankara, Türkiye

LinkedInX
Mert KöseoğluMK

About

Senior Software Engineer and Technical Leader with over 10 years of experience delivering high-impact software products for global, remote teams. Proven ability to architect scalable solutions and lead high-performing engineering teams. Expertise in modern web technologies including TypeScript, Node.js, Bun, React, and React Native, alongside advanced AI/LLM applications, agent development including MCP and A2A protocols, and robust testing methodologies.

Work Experience

Mert Koseoglu, Software Forge
London, England, United Kingdom
Remote

2024 - Present

Senior Software Engineering Consultant

Software consultancy providing strategic guidance and engineering solutions. Key projects: Doğuş Technology - VDF Web, D-Charge, Architectural Standards & Boilerplates

Planhat
Stockholm County, Sweden
Remote

2023 - 2024

Senior Software Engineer

Planhat is a customer platform that provides insights, manages workflows, and enhances customer experience for modern technology companies worldwide. As a Senior Software Engineer (Full-stack), I contributed to feature development and maintenance, working primarily with Vue and Node.js.

Qooper
Chicago, Illinois, United States
Remote

2021 - 2023

Technical Lead

As a Technical Lead at Qooper, I: Guided high-level architectural discussions and proactively removed blockers to maintain consistent development progress. Collaborated with the CTO to refine the recruitment process, aligning hiring practices with evolving product requirements. Interviewed and hired engineers across mobile, web, and backend roles, growing the team from 1 to 6 members. Provided career guidance, conducted regular 1:1 sessions, and performed code reviews to reduce technical debt and enhance the overall developer experience. Consistently sought out new best practices and emerging technologies to elevate team performance and technical standards.

Qooper
Chicago, Illinois, United States
Remote

2021 - 2021

Senior Software Engineer

Qooper is a comprehensive people development platform that offers mentorship, coaching, learning, group, and opportunity solutions. As a Senior Software Engineer (Full-stack), I: Contributed to migrating backend services from Ruby to Node.js, adopting modular architecture patterns. Partnered with product and design teams during a major UI revamp, restructuring front-end codebases. Transitioned separate native iOS/Android codebases into a unified React Native application. Conducted technical debt audit and formulated remediation roadmap.

Countly
London, England, United Kingdom
Remote

2019 - 2021

Software Engineer

Countly is a product analytics solution that processes billions of data-points daily. As a Software Engineer, I: Utilized Node.js, MongoDB, Backbone.js, jQuery, TDD, and Vue.js to build scalable solutions. Developed plugins, integrated React Native SDK, and optimized components. Implemented key analytics features—Top Events, Event Groups, Data Points, and Filtering Rules CLI. Improved the Drill Plugin and refined Dashboard UX.

TDSmaker
Istanbul, Turkey
Remote

2018 - 2019

Software Engineer

TDSmaker is a web-based solution for managing technical datasheets. As a Software Engineer, I: Leveraged React, Redux, TypeScript, Node.js, MongoDB, AWS, Jenkins, and TDD to build core functionalities. Contributed to platform capabilities, enhanced usability, and improved performance. Integrated AWS services and optimized CI workflows. Adhered to TDD principles, delivering robust, maintainable code.

Jotform
Ankara, Turkey
On-site

2018 - 2018

Software Engineer

Contributed to Jotform's form builder platform development.

Mert Koseoglu, Software Forge
London, England, United Kingdom
Remote

2013 - 2018

Software Engineering Consultant

Software consultancy providing strategic guidance and engineering solutions.

Recommendations

Cenk Yurtbilir

Co-Founder & CTO at Qooper

managed Mert Köseoğlu directly • December 14, 2023

“I highly recommend Mert as a skilled and dedicated professional. He consistently delivered high-quality code and played a key role in enhancing our products' user experience. Rapidly advancing to the position of Technical Lead, he demonstrated not only technical excellence but also strong leadership and mentoring capabilities. Adaptable and forward-thinking, he embraces challenges and excels in learning new technologies. He effectively communicates with cross-functional teams and stakeholders, contributing to a positive work environment. I am confident that Mert will continue to excel and be a valuable asset to any organization.”

Enes Öztürk

Senior Software Engineer at Qooper

reported directly to Mert Köseoğlu • June 28, 2022

“We met with Mert at Qooper and he was the team leader. I saw how he takes seriously his work, follows up his work very well, pays great attendance to code reviews, and combines his technical knowledge with leadership skills very well. On code reviews and when we take technical discussions, I've learned great approaches from him. I would definitely like to work with people like Mert in the companies I work for. Thank you, Mert!”

Emre Deger

Lead Backend Engineer at Qooper

reported directly to Mert Köseoğlu • June 28, 2022

“The sides that make Mert the most valuable; always open to new ideas, not afraid to learn and share information, and have a great business ethic. His strong communication skills make him an indispensable and very good manager. He always supported the teams both technically and mentally. A manager you will always enjoy working with. It was a big pleasure working with Mert.”

Sitki Bagdat

Senior Software Engineer at Qooper

reported directly to Mert Köseoğlu • June 27, 2022

“Mert was a great professional to work with. We worked together at Qooper and he helped me a lot to get started and also to understand internal processes. His work ethic is immaculate and so easy to work together with. He always kept the team motivated and shared knowledge. I believe he is one of the best managers I ever had, as his people skills are highly developed. I'd definitely work with him again.”

Furkan Başaran

Lead Software Engineer at Countly Analytics

worked with Mert Köseoğlu but on different teams • May 17, 2020

“Mert has a deep passion and energy for learn new things. I think this passion will keep him as valuable person/employee/teammate at his whole career.”

Melih Korkmaz

Senior Frontend Devops Engineer at Essent

managed Mert directly • May 17, 2018

“Mert is one of the most talented developers that I ever worked with. He is ambitious, eager to learn, and productive. He worked with me as a full stack developer at TDS maker. Since the position is remote, I had doubts about working with such a young developer. But I had never had an issue with him. He knows his responsibilities, and he tries his best to finish the tasks. I definitely recommend him to the employers who want to work with.”

Projects

MCP Directory & Hub

Operating the infrastructure for model-context-protocol.com, the open directory for discovering and connecting to MCP servers and clients, handling 30K daily requests. In collaboration with Cloudflare, built the entire platform on their ecosystem including Pages for Next.js SSR, Workers and Durable Objects for crawling and indexing, and Cloudflare Registrar for domain management.URL: model-context-protocol.com

Cloudflare Pages
Cloudflare Workers
Cloudflare Durable Objects
Cloudflare Registrar
Next.js (SSR)
Infrastructure Operations
Web Crawling
Indexing

xASO

Comprehensive App Store Optimization platform that helps developers improve their app's visibility and performance through keyword analysis, competition tracking, and market trend insights. The platform provides in-depth metrics including search volume, market position, competition analysis, and AI-powered recommendations. URL: xaso.io

TypeScript
Node.js
React
Next.js
Data Analysis
SEO/ASO Algorithms
Market Trend Analysis
SaaS Development

xHabit

Designed and developed xHabit, an innovative iOS habit tracker application that leverages artificial intelligence to help users build and maintain positive habits. The app provides personalized recommendations, adaptive reminders, and progress insights based on individual behavior patterns and goals. Built with Expo and React Native for a seamless, native-like user experience.

React Native
Expo
TypeScript
iOS Development
Mobile UX/UI
AI Integration
Habit Formation Algorithms
Behavioral Science

LLMs Agency

Empowering Businesses through AI and Large Language Models. URL: llms.agency

LLMs
Agents
Generative AI
Prompt Engineering
Langchain
RAG
Vector Databases

OXVO

Easy appointment management platform for businesses. Update your business information, manage your services, keep track of your employees, and monitor your customers. See statistics, and communicate with them. URL: github.com/oxvo

CTO
TypeScript
React
Node.js
GraphQL
Next.js
tRPC
React Native

VDF Web

Built and led an eight-person engineering team to deliver a large-scale web application leveraging Next.js (SSR/SSG), a custom design system, and a modern stack. Combined strategic guidance with hands-on coding, ensuring a seamless journey from architecture to deployment. URL: vdf.com.tr

TypeScript
Zod
TanStack
Zustand
Next.js
Tailwind
Storybook
E2E Testing
.NET 8
Strapi CMS
Docker
Kubernetes
Nginx

D-Charge

Leading the front-end and BFF REST API development of an admin panel—utilized by distributors, administrators, and various stakeholders—while overseeing two interns. URL: dcharge.com.tr

TypeScript/Zod
Shadcn UI
TanStack
Zustand
React.js
Tailwind
Node.js
Docker
Kubernetes
Nginx

Architectural Standards & Boilerplates

Led the design and implementation of architectural standards and reusable boilerplates for Doğuş Technology in Digital Solutions projects, utilizing Next.js with RSC and AWS infrastructure. Focused on enhancing developer experience, code quality, and deployment efficiency across multiple teams.

System Architecture
Frontend Architecture
Next.js
React Server Components (RSC)
AWS
Boilerplate Development
Standardization
CI/CD Optimization
Ankara Esenboğa Airport Aparthotel - Luxury Rental