Dmitrii Simushev
Senior Engineering Manager at Playrix
Madrid, Community of Madrid, Spain
Summary
👤
Senior🎓
Top SchoolDmitrii Simushev is a Senior Engineering Manager based in Madrid with 14 years of software engineering experience and 12+ years of leadership in building and scaling backend systems. He has led multi-team organizations (up to 26 engineers) through rapid change, hiring and promoting talent, rebuilding processes, and steering architectural risk decisions. Hands-on by background, Dmitrii designed core architectures and implemented critical services in Go and Postgres while previously owning backend development, CI/CD and dev infra for large banking systems. He is an active open-source contributor to notable projects like webmozarts/assert and Mibew, demonstrating a focus on robust input validation and maintainable server-side code. Colleagues know him as a pragmatic technical mentor who blends operational rigor with developer growth—several engineers under his leadership have been promoted to team lead. He brings a proven mix of delivery discipline, code-level craftsmanship, and people development to complex product and platform challenges.
14 years of coding experience
8 years of employment as a software developer
Магистр, Магистр at Moscow Power Engineering Institute (Technical University)
Spanish, English, Русский
Stackoverflow
308reputation
15kreached
9answers
1question
Github Skills (20)
unit-testing10
assertion10
git10
lib10
back-end-development10
code-library10
php10
version-control10
assert10
web-application9
webapp9
web-development9
phpunit8
collections6
nodejs6
Programming languages (11)
Github contributions (5)
Mibew/mibew
Mar 2012 - Mar 2017
Mibew Messenger - open-source live support application
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1 release, 1247 commits, 12 PRs in 5 years 1 month
Contributions summary:Dmitrii primarily contributed to the back-end of the Mibew Messenger project. Their commits focused on bug fixes, specifically addressing issues related to undefined variables, incorrect logic, and inefficient code practices. The user made changes across several files in the source directory and adjusted the style of templates in the project, indicating a good understanding of the codebase and project structure.
mysqlchat-applicationphpchatsupport-system
webmozarts/assert
Sep 2016 - Dec 2018
Assertions to validate method input/output with nice error messages.
Role in this project:Back-end Developer
Back-end DeveloperContributions:5 commits, 4 PRs, 34 comments in 2 years 3 months
Contributions summary:Dmitrii contributed to the `webmozarts/assert` repository by implementing and extending assertion functionalities. Their work involved adding new assertion methods for counting elements, checking for whitespace-only strings, and validating IP addresses. Furthermore, they refactored code by renaming methods and modifying existing assertion implementations, demonstrating a focus on code maintainability and feature enhancement within the library.
input-methodassertionsinput-outputvalidationtesting
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