Nuryagdy Mustapayev

Senior PHP Backend Developer
📍 Münster, Germany

About

PHP developer with 10+ years of experience building high-quality, clean, and maintainable backend systems. Passionate about SOLID principles, software design patterns, and PSR standards — writing readable, modular code is what gives me the most joy.

In my free time I contribute to open source projects on GitHub and build my own libraries. Currently the main maintainer of a widely-used PHP Payment Gateway library.

Skills

PHP Symfony API Platform MySQL / MariaDB Doctrine ORM Elasticsearch Redis JavaScript ReactJS / NextJS CI/CD Docker / Kubernetes Git Code Reviews DDD Event-Driven Architecture REST & GraphQL APIs

Work Experience

Sr. Backend Developer
Publicplan GmbH
Built digital solutions for the German public sector, working across multiple Scrum teams and customer projects. Designed and implemented microservices using DDD, Event-Driven Architecture, and MVC patterns. Set up CI/CD pipelines, reached 100% branch test coverage on some apps, and mentored junior developers.

Sr. PHP Backend Developer
CHECK24 Vergleichsportal GmbH
Assigned to the wheels/shopping department in an international Scrum team. Built and optimised REST APIs, backoffice tooling, and Elasticsearch queries. Bootstrapped a new project from scratch using API Platform v2.

Professional PHP Backend Developer
Beyn Bilgi Teknolojileri A.Ş.
Worked on high-traffic projects (5M+ daily transactions) for international customers. Developed backend REST APIs and contributed to Angular front-end dashboards. Optimised MySQL and Elasticsearch queries, reviewed code, and assisted junior developers.

Software Developer
Rentrent El. Tic. Yaz. Bil. Hiz. A.Ş.
Built multiple projects from scratch at this startup. Developed a hybrid mobile app (published on Google Play & App Store) using Angular 7, Ionic 4, and a CodeIgniter REST API. Also built a multi-role platform (admin, affiliate, customer) with Symfony v4 and MySQL.

Software Developer
DATAPROCESS Bilisim Hizmetleri A.Ş.
Full-stack developer working on websites and internal tools. Built a salary calculator in Ember.js and delivered a full PHP CodeIgniter project for a Turkish customer.

Open Source Projects

PHP Library for Turkish Payment Gateways

Main maintainer for 6+ years. Provides a common interface for many Turkish payment gateways, with a Symfony Bundle and Laravel Package for easy integration.

FTP Sync Library — Node.js

Open source Node.js library for FTP synchronisation, published as an NPM package.

Salary Calculator for Turkey — Angular

Open source app that handles the complex Turkish salary calculation system, built with Angular.

Education

Bachelor's Degree in Computer Science
Hacettepe University
One of Turkey's top universities. Studied C, C#, Java, Assembly, and core Computer Engineering fundamentals.

Certifications & Conferences

ISTQB Certified Tester
iSQI GmbH
Jul 2025

SymfonyCon Disneyland Paris 2022
Paris, France
Nov 2022

Languages

Turkmen
Native
English
C1 — Proficient
German
B2 — Upper Intermediate
Turkish
C1 — Proficient
Russian
C1 — Proficient