Software Engineer Senior

Serdar Vayni

**** **** **. *** *****, CA ***** 619-***-**** ******.***@*****.*** linkedin.com/in/wayni

Senior Full-Stack & Backend Developer with 16+ years of experience designing and developing scalable, high-performance enterprise applications. Proven expertise in .NET Core, C#, Python, Node.js, React, and Microservices architecture. Hands-on experience with DevOps tools, CI/CD pipelines, containerization (Docker, Kubernetes), and cloud platforms (Azure). Strong background in SQL/NoSQL databases including Oracle, PostgreSQL, MongoDB, Redis, and MS SQL Server. Authorized to work in the U.S. and open to on-site or remote opportunities.

PROFESSIONAL EXPERIENCE

PLUXEE,

Full Stack Engineer

(Remote) Turkiye

May 2020–Present

●Built scalable CMS and 20+ reusable React components

●Integrated multilingual support using MongoDB and i18n

●Designed standardized logging and dynamic Webhook architecture

●Applied CQRS and middleware patterns for backend improvements

PARAQR,

Software Architect

(Remote) Turkiye

Jun 2024–Jan 2025

●Migrated legacy monolith to .NET Core Microservices on Azure

●Designed dynamic scaling infrastructure, cutting cloud costs by 60%

●Optimized DB performance and app response time by 30%

DOMINOS

Full Stack Engineer / DevOps Consultant

(Remote) Turkiye

Apr 2019–Desc 2019

●Rebuilt loyalty platform with ASP.NET Core Microservices

●Integrated Redis, Elasticsearch, and Azure Kubernetes Services

●Led DevOps practices and full documentation transfer

KETCHUP LOYALTY MARKETING

Team Lead – Senior Software Engineer

(Onside) Turkiye

May 2015–Mar 2019

●Led team and architecture of loyalty-based mobile backend

●Improved delivery speed with Agile/Kanban methodology

●Reduced infrastructure costs with accurate Azure scaling estimations

HURRIYET

Senior Software Engineer

(Onside) Turkiye

Jan 2014–Apr 2015

●Built dynamic, non-technical user-controlled forms with ASP.NET MVC

●Integrated Elasticsearch for advanced querying/reporting

TRENDYOL.COM

Senior Software Engineer

(Onside) Turkiye

Oct 2012–Jan 2014

●Led migration to ASP.NET MVC 3, improved DB performance by 35%

●Introduced automated testing infrastructure

VERISOFT

Senior Software Engineer

(Onside) Turkiye

Feb 2011–Oct 2012

●Developed bank EMV UI, awarded for performance

●Delivered loyalty system using Oracle and MS SQL

BEYCON

Software Engineer

(Onside) Turkiye

Mar 2010–Feb 2011

●Developed and integrated dynamic jQuery components.

●Utilized AJAX and asynchronous data loading to update content.

GOZEN HOLDING

Software Engineer

(Onside) Turkiye

Aug 2008–Aug 2009

●Developed and integrated dynamic jQuery components.

●Utilized AJAX and asynchronous data loading to update content.

EDUCATION

SELCUK UNIVERSITY

Bachelor of Computer Science,

Konya, Turkiye

Sep 2003-July 2008

ADDITIONAL SKILLS

●Languages: C#, Python, JavaScript (Node.js), TypeScript, SQL

Frontend: React.js, HTML5, CSS3

●Backend: ASP.NET Core, Express.js, REST APIs, Webhooks

●Databases: Oracle, MS SQL Server, PostgreSQL, MongoDB, Redis

●DevOps & Cloud: Azure, Docker, Kubernetes, GitHub Actions, CI/CD, Linux

●Tools: Git, Jira, Agile (Scrum/Kanban), Swagger, Postman

●Architectures: Microservices, Event-Driven Systems, CQRS, DDD

Contact this candidate