Yusuf Burak PEKER
Backend Developer (.NET) | Full-Stack Developer
İzmir, Turkey
Summary
Backend-focused Computer Engineer with 3 years of experience building multi-tenant SaaS and enterprise platforms with C#, ASP.NET Core, PostgreSQL and Redis, together with React and Next.js frontends. Full-stack developer on several production products, with hands-on work in background processing, Elasticsearch, payment and AI integrations, and CI/CD with Docker and Azure DevOps.
Technical Skills
Each project page lists the full technology stack used in that project.
Languages
Backend
Frontend
Databases (SQL)
NoSQL & Search
Authentication
Integrations
DevOps & Cloud
Testing & Docs
Tools
Work Experience
Kartega Yazılım — Backend Developer
Dec 2024 – Present
İstanbul (Remote)
DTArşiv – Media Asset Management (Demirören News Agency)
DetailsBackend Developer
- Built a background job pipeline that continuously ingests news from 4–5 RSS feeds and daily reporter uploads, with format conversion and thumbnail/proxy generation.
- Implemented Elasticsearch-based search, FTP ingest and Azure AD (OpenID Connect) sign-in.
Aktend – Enterprise Document Management (EDMS)
DetailsFull-Stack Developer
- Built a multi-tenant platform that combines document management, workflow, a form designer, archiving and governed AI features.
- .NET 8 backend and the Next.js tenant application end to end, including Elasticsearch-based document search.
Laviya – Project & Task Management SaaS
DetailsFull-Stack Developer
- Built a multi-tenant collaboration platform with ClickUp/Jira import, a paywall and iyzico subscriptions.
- Integrated AI orchestration with the OpenAI API and Gemini API, plus cloud storage on AWS S3, Azure Blob Storage and Google Drive API.
Pendigit – Super App
DetailsFull-Stack Developer
- Developed .NET 8 backend features for social media, live broadcasting, VOD, EPG and ad management.
- Built the Next.js admin panel (back-office, user management) and manager panel features (channel, content and ad management, EPG editor); integrated iyzico and PayTR payments.
OpinTag – Asset Lifecycle Management
DetailsFull-Stack Developer
- Built a multi-tenant platform for QR-based asset identity, ownership and service history.
- Implemented KVKK-compliant audit logging for every write operation.
Digital Label – Store Price Tag Management (Vodafone)
DetailsFull-Stack Developer
- Built the platform end to end with TypeScript and Next.js, LDAP authentication and AWS S3.
Painting Competition Platform (Hyundai)
DetailsFull-Stack Developer
- Built the .NET 9 backend and the Razor Pages admin panel end to end.
- Set up Azure DevOps pipelines for IIS deployment.
Freelance — Full-Stack Developer
Mar 2026 – Present
Remote
Lumos Danışmanlık – Psychological Counseling Center Platform
DetailsFull-Stack Developer
- Designed, built and deployed a platform with online booking, iyzico payments and Jitsi video sessions.
- Added automated email and SMS reminders through a background service; delivered to production with full handover documentation.
Şile'de Yatırım – Real Estate & Investment Portal
DetailsFull-Stack Developer
- Built an SEO-friendly portal with a CMS, property listings, announcements and dynamic pages.
- Implemented JWT role-based authorization for Admin, Editor and Member roles.
İzbel Yazılım — Software Engineer
Jun 2024 – Dec 2024
İzmir
- Developed accounting, restaurant POS and QR menu systems as the sole developer; the POS system is used by restaurants across İzmir.
- Integrated e-Invoice (e-Fatura) services into the POS and accounting software through REST APIs and scheduled Windows Services.
ENM Digital — Software Engineer
Nov 2023 – Jun 2024
Manisa
- Worked in a team building Proje Sihirbazı (project wizard), a digital business card application and a digital education platform.
- Created an AI-driven tool with Python and the OpenAI API that analyzes Teknofest and Technopark project applications.
Mes Mudita Otel (Efendel Group) — Assistant Manager
Jul 2022 – Jul 2023
İzmir
- Co-managed operations of a boutique hotel with a seasonal team of up to 10 staff; drove a 50% increase in online bookings through website development, OTA optimization and guest experience improvements.
Projects
Detailed write-ups of the products I've built at work, for clients and on my own.
Work
DTArşiv
Demirören News Agency
Enterprise media asset management for a national news agency
Aktend
Kartega Yazılım
Multi-tenant EDMS, workflow and governed-AI platform for organisations
Laviya
Kartega Yazılım
AI-assisted, multi-tenant project and task management SaaS
Pendigit
Kartega Yazılım
Super app combining a social feed, TV-style channels, VOD, live streaming and ads
OpinTag
Kartega Yazılım
Digital identity and lifecycle platform for tech assets
Digital Label
Vodafone
Price tag and campaign content for in-store devices
Hyundai Painting Competition
Hyundai
Public site and judging back office for a children's painting competition
Restaurant POS, Accounting & e-Invoice Suite
İzbel Yazılım · Jun 2024 – Dec 2024
POS, accounting, QR menu and e-invoice products for restaurants and small businesses
ENM Digital Products
ENM Digital · Nov 2023 – Jun 2024
Tender-finding, digital business card, e-learning and AI evaluation tools
Freelance
Personal
MuzikDuello
2026
Real-time multiplayer music trivia on web and mobile
QuizzApp
2026
Community quiz platform with a moderation workflow
pkryusuf.tech — Remote AI Coding Dashboard
2026
A mobile-first web dashboard that drives AI coding CLIs on a VPS — and this site
CarGoo
Hackathon & competition project · 2021 – 2023
Crowdsourced cargo delivery — Mercedes-Benz StarHack'21 winner
DetailsEducation
Manisa Celal Bayar University
Sep 2018 – Jun 2023
B.Sc. in Computer Engineering (English)
Manisa, Turkey
- GPA: 3.19 / 4.00
- 1-year English preparatory program
Awards
- Mercedes-Benz Otomotiv StarHack'21 Hackathon – 1st Place (2021) with CarGoo, a crowdsourced cargo delivery system that matches packages with users' existing travel routes, cutting delivery costs by 25%
- 12th Genç Beyinler Yeni Fikirler (Young Brains, New Ideas) Competition – Industry and Automotive Category, 3rd Prize with CarGoo (2023)
Publication
A Modeling Approach for Cargo Transportation Considering Energy Saving
2024
Emek, S., Tosun, İ., Yılmaz, M. E., Say, Z., & Peker, Y. B. (2024). Fırat University Journal of Engineering Sciences, 36(2), 965–978.
https://doi.org/10.35234/fumbd.1468659Leadership & Volunteering
- IEEE MCBU Student BranchVice Chairman of the Computer Society2018 – 2023
- TÜBİTAK 4007 Manisa Science Festival & STREAMItUp! (U.S. Embassy)Workshop leader, instructor and project coordinator2021 – 2022
- Erasmus+ Youth ExchangeCraiova, Romania – Youthpass certificate2022
Languages
- TurkishNative
- EnglishB2 (Upper-Intermediate)