Metehan is currently unavailable
Metehan Senol
Verified Expert in Engineering
Software Engineer and Developer
Istanbul, Turkey
Toptal member since December 3, 2025
Bio
Metehan is a backend-focused software engineer specializing in JavaScript and TypeScript. He builds reliable, scalable systems using Node.js, from REST and GraphQL APIs to background workers and distributed architectures. Metehan focuses on clean code, performance, and making back-end systems easy for teams to maintain and extend.
Portfolio
GlitchD Labs
TypeScript, Node.js, NestJS, AWS SDK, AWS Lambda, Docker, E2E Testing...
Deel
JavaScript, TypeScript, Node.js, Express.js, AWS SDK, Kubernetes, PostgreSQL...
MAYD
TypeScript, Node.js, NestJS, E2E Testing, AWS SDK, Kubernetes
Experience
- SQL - 13 years
- JavaScript - 13 years
- Node.js - 10 years
- PostgreSQL - 10 years
- Docker - 7 years
- TypeScript - 7 years
- NestJS - 5 years
- AWS SDK - 5 years
Preferred Environment
Slack, MacOS, Chrome, Gmail
The most amazing...
...contribution I've made is the development of one of the world's largest SaaS products at Deel, which is proudly ranked among the top 10 SaaS apps worldwide.
Work Experience
Senior Back-end Engineer
2024 - 2025
GlitchD Labs
- Designed and developed reliable back-end systems powering GlitchD’s blockchain infrastructure platform. Used Node.js, NestJS, and AWS, and built and optimized APIs and services that enable instant deployment of rollups and custom Web3 architectures.
- Built high-performance APIs and back-end services supporting rapid deployment of rollups and Layer 1 blockchain nodes.
- Improved scalability and reliability of a Web3 infrastructure through optimized cloud-native design.
Technologies: TypeScript, Node.js, NestJS, AWS SDK, AWS Lambda, Docker, E2E Testing, Blockchain, Ethereum
Senior Back-end Engineer, Global Payroll & Compliance
2022 - 2024
Deel
- Contributed to building and scaling back-end systems for Deel’s all-in-one payroll platform. Delivered secure, high-performance services powering global payroll and HR operations for distributed teams around the world.
- Built and optimized back-end services that supported seamless payroll and compliance workflows for hundreds of thousands of global users.
- Improved platform scalability and reliability through cloud-native architectures, leveraging AWS and Kubernetes.
Technologies: JavaScript, TypeScript, Node.js, Express.js, AWS SDK, Kubernetes, PostgreSQL, E2E Testing
Senior Back-end Engineer
2021 - 2022
MAYD
- Joined as one of the founding engineers during the COVID-19 era, building and scaling microservices that powered MAYD’s native on-demand pharmacy delivery app.
- Helped establish core engineering standards and infrastructure as part of the founding technical team.
- Designed and scaled microservices supporting real-time pharmacy delivery across multiple cities.
Technologies: TypeScript, Node.js, NestJS, E2E Testing, AWS SDK, Kubernetes
Senior Back-end Engineer
2021 - 2021
Netguru
- Delivered back-end services using Node.js and NestJS for a client project, contributing to fast-paced product development and helping clients scale engineering capacity and accelerate delivery.
- Developed reliable Node.js and NestJS back-end services that supported rapid product and MVP delivery for the client.
- Improved back-end code quality and performance through clean architecture practices and consistent code reviews.
Technologies: TypeScript, Node.js, NestJS, Unit Testing
Senior Full-stack Developer
2020 - 2021
London-based Fintech Startup
- Participated in team planning and design discussions, led developers in translating requirements into solutions, and collaborated with marketing teams to keep projects on schedule and align with business needs.
- Led a development team in analyzing requirements and delivering effective software solutions.
- Improved cross-team efficiency by coordinating closely with Marketing to meet timelines and requirements.
Technologies: JavaScript, TypeScript, Unit Testing
Senior Full-stack Developer
2018 - 2020
BPM Software Startup
- Built and implemented ERP and BPM solutions, created reusable modules to speed up development, and translated client requirements into actionable product stories.
- Collaborated directly with clients to gather and refine requirements, transforming them into clear product stories and reducing rework during development.
- Implemented and tested customizable business process management (BPM) functionalities that supported client business processes and improved overall workflow.
Technologies: JavaScript, Node.js, Unit Testing, SQL
Senior Full-stack Developer
2016 - 2018
Trendyol
- Contributed to sprint planning and retrospectives, delivering scalable software components and high-availability applications. Conducted peer code reviews to improve code quality, performance, and maintainability.
- Played a key role in migrating core platform components from a monolithic architecture to microservices, enabling scalability, independent deployments, and improved fault isolation across services.
- Created modular, reusable software services that accelerated feature delivery and reduced duplication across multiple product teams.
Technologies: C#.NET, JavaScript, Node.js, Unit Testing, SQL
Software Developer & Consultant
2014 - 2016
Logo Software Inc.
- Worked closely with business stakeholders to convert operational needs into scalable development tasks, delivering custom ERP modules and enhancements.
- Converted client-facing business processes into working software modules, enhancing workflow automation and improving operational efficiency.
- Collaborated with functional teams to refine business requirements into actionable development tasks, reducing rework and accelerating delivery timelines.
Technologies: C#.NET, SQL
Software Developer & Trainer
2011 - 2014
Bilişim Eğitim Merkezi
- Created and delivered a hands-on training curriculum that introduced trainees to real software engineering workflows, coding standards, and modern development tools, dramatically improving their readiness for project environments.
- Guided trainees through structured, real-world coding challenges and mini-projects, helping them strengthen problem-solving abilities, adopt best practices, and gain confidence working in collaborative, production-like settings.
- Introduced modern development workflows, such as version control, agile practices, and clean code principles, improving trainee understanding of industry expectations.
Technologies: C#.NET, SQL, JavaScript
Experience
Back-end Engineering at Deel – A Top 10 Global SaaS Company
At Deel, one of the world’s leading payroll and compliance platforms, I played a key role in building and scaling back-end systems that power the company’s global payroll platform, used by thousands of distributed teams across 150+ countries. As part of the engineering organization behind a top-tier SaaS product, I worked on complex, high-scale systems that support onboarding, payroll processing, compliance, invoicing, and HR automation–all in a fully remote, globally distributed environment.
High-impact Article on Medium.com
In my article “Creating a RESTful Web API with Node.js and Express.js from scratch,” I guide readers through a hands-on, from-zero tutorial on building a fully functional REST API, demonstrating the “how” and the reasoning behind the architecture and best practices.
High-ranked Member in Stack Overflow
For over 8 years, I’ve been an active member of Stack Overflow, contributing to questions and answers related to topics such as JavaScript, TypeScript, and Node.js. I treat the platform not just as a Q&A site, but as an ongoing public logbook of real-world problem solving, collaboration, and continuous learning.
Education
2009 - 2013
Bachelor's Degree in Computer Engineering
Sakarya University - Sakarya, Turkey
2006 - 2009
Bachelor's Degree in Business Administration
Anadolu University - Eskisehir, Turkey
Certifications
OCTOBER 2017 - PRESENT
Professional Scrum Master - PSM I
Scrum.org
Skills
Libraries/APIs
Node.js
Tools
AWS SDK, Slack, Terraform
Languages
TypeScript, JavaScript, SQL, C#.NET
Paradigms
E2E Testing, Unit Testing, Agile, Scrum
Frameworks
NestJS, Express.js, Chrome
Platforms
Docker, MacOS, Ethereum, Blockchain, Kubernetes, AWS Lambda
Storage
PostgreSQL, MySQL
Other
Computer Engineering, Gmail, Business Administration, Software Development
Collaboration That Works
How to Work with Toptal
Toptal matches you directly with global industry experts from our network in hours—not weeks or months.
1
Share your needs
Discuss your requirements and refine your scope in a call with a Toptal domain expert.
2
Choose your talent
Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.
3
Start your risk-free talent trial
Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.
Top talent is in high demand.
Start hiring