ES Emre Sever
Tatilbudur · online
TR EN
.NET Backend Developer · Aydın

Behind the scenes,
I build solid
systems that last.

I'm a .NET Core backend developer. API design, databases and performance tuning; from enterprise scale to startup speed, since 2020.

See my work Experience
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C# / ASP.NET Core·Web API·PostgreSQL·SQL Server·EF Core·Docker·CQRS & DDD·Azure·Salesforce·Microservices· C# / ASP.NET Core·Web API·PostgreSQL·SQL Server·EF Core·Docker·CQRS & DDD·Azure·Salesforce·Microservices·
06 years of .NET experience, since 2020
04 companies across two countries: Türkiye and the US
08 businesses bought my app while I was still at university

01 — Work

Company projects, one client job and a product of my own
System overview
backend
Architecture Multi-tenant · 3 hotels, one system
Backend .NET Core · Web API · dynamic form and workflow services
Data MS SQL Server · Salesforce integration
Frontend React · dynamic screens per department
Extra Backend of an AI-assisted loyalty app
My role Backend developer · 12/2024 — 06/2025
GET /api/v1/reservations POST /api/v1/forms/submit GET /api/v1/loyalty/points
01 Company project · Göçtur

Hotel Management System

A multi-tenant management system for three hotels: the dynamic screen and form infrastructure used by departments, Salesforce and SQL Server integrations, and the backend of an AI-assisted loyalty app. I worked on it as a backend developer.

.NET CoreSQL ServerSalesforceMulti-tenant
2024 — 2025
PowerDevsample
PowerDevISO dataLoad forecastQueuesConstraintsReports
ISO data · Daily summaryRefresh
Sources4 ISO
Records2.4M
Errors0
PowerDevsample
PowerDevISO dataLoad forecastQueuesConstraintsReports
Interconnection queues · NYISOSync
IDProjectCapacityStatus
Q-1042Solar · Suffolk120 MWActive
Q-1051BESS · Erie80 MWReview
Q-1063Wind · Lewis210 MWActive
Q-1077Solar · Ulster45 MWPending
Q-1080BESS · Kings60 MWActive
Q-1094Hybrid · Oswego150 MWReview
PowerDevsample
PowerDevISO dataLoad forecastQueuesConstraintsReports
ERCOT · Real-time loadExport
Current load61.4 GW
Forecast (17:00)64.2 GW
Last update12 s
02 Company project · PowerDev

Energy Market Data Platform

A data platform for US electricity markets: .NET services that collect data from ISOs (ERCOT, CAISO, NYISO, SPP), process it with scheduled jobs and serve it through APIs. Large datasets on PostgreSQL and integrations with external institutions.

.NET CorePostgreSQLHangfireMicroservices
2022 — 2024
Vivenso Sales Networksample
VivensoNetwork viewAgentsSales historyEarningsSettings
Earnings · Last 12 monthsGet report
This month₺6.840
Average₺5.120
Highest₺8.300
Vivenso Sales Networksample
VivensoNetwork viewAgentsSales historyEarningsSettings
AgentsExport
CodeAgentSalesStatus
AKA. Kaya₺12.400Active
BDB. Doğan₺18.900Active
CSC. Sarı₺9.100Inactive
MTM. Tunç₺3.250Active
HKH. Koç₺2.780Active
ZAZ. Ak₺1.900Inactive
Vivenso Sales Networksample
VivensoNetwork viewAgentsSales historyEarningsSettings
Sales network · SeptemberAdd agent
Total sales₺48.200
Active agents10
Monthly earnings₺6.840
EY₺48.200
AK₺12.400BD₺18.900CS₺9.100
MTHKZADERYİP
03 Client project · Vivenso

Vivenso Sales Network

A system that links sales representatives in a tree structure: each representative earns from their own sales and from the sales of the representatives under them. Earnings, performance tracking and team hierarchy in one panel. Built as a client project for Vivenso.

ASP.NET CoreAngularMySQL
2023
Grocery Store Appsample
Market · Register 1SalesStockCreditReportsProducts
Reports · Monthly income & expensesPDF
Income₺184.300
Expenses₺121.750
Net₺62.550
Grocery Store Appsample
Market · Register 1SalesStockCreditReportsProducts
Stock · Critical levelCreate order
BarcodeProductStockStatus
8690123456Milk 1 L6Critical
8690987654Bread42OK
8691122334Eggs (10)9Critical
8695566778Olive oil 1 L23OK
8693344556Cheese 500 g4Critical
8697788990Tea 1 kg31OK
Grocery Store Appsample
Market · Register 1SalesStockCreditReportsProducts
CartComplete sale
8690123456Milk 1 L₺32,50
8690987654Bread₺15,00
8691122334Eggs (10)₺78,90
8695566778Olive oil 1 L₺289,00
8693344556Cheese 500 g₺164,50
8697788990Tea 1 kg₺210,00
8692233445Water 5 L₺42,00
Total₺831,90Cash₺900,00Change₺68,10Take payment
04 My own product

Grocery Store App

Barcode sales, inventory, customer credit and daily, monthly and yearly income and expense reports for grocery stores, accessible from anywhere via the cloud. I sold it to eight businesses while at university and keep developing it.

ASP.NET CoreAngularMySQL
2020 —

02 — About

ES
Emre Sever .NET Core Back End Developer
NowTatilbudur
LocationAydın, Türkiye
LanguageEnglish, advanced
EducationSelçuk University, Computer Software Eng.

Building business-critical software that adds real value for users is what motivates me.

I built my career on .NET technologies, with a particular focus on the .NET Core platform. I have worked in both large-scale enterprise projects and startup environments, which taught me to adapt to different challenges and find inventive solutions to complex problems.

I care about delivering clean, modular and scalable solutions, and about systems that stay reliable and fast. I stick to sound development practices, keep looking for ways to improve and follow new technologies closely. Working well within a team and thinking ahead let me make a tangible contribution to every project I join.

I started as a shareholder and developer at an ERP company in Konya, spent about two and a half years on the team of US-based PowerDev, and built the management system for three hotels in Kuşadası. Since June 2025 I have been working at Tatilbudur as a .NET Software Development Specialist. New challenges motivate me, and I enjoy finding inventive ways to overcome them.

Backend architecture and developmentModular, clean and scalable architectures; seamless integration with frontend systems and external services.
API design and integrationRESTful APIs and microservices; effective communication between services.
Database managementPostgreSQL and SQL Server; query optimisation and data integrity.
Performance optimisationProfiling, caching and refactoring for systems that stay efficient under load.
Testing and qualityHigh code quality and reliability through unit and integration tests.
Agile and ScrumActive participation in sprint planning, daily stand-ups and retrospectives.
Backend C# · ASP.NET Core · Web API · EF Core
Data PostgreSQL · SQL Server · MySQL · Salesforce
Architecture & infrastructure CQRS · DDD · Mikroservisler · Docker · Azure
Frontend Angular · React

03 — Experience

2019 to today
2025 — Present

Tatilbudur

.NET Software Development Specialist
12/2024 — 06/2025 Aydın, Kuşadası

Göçtur

Back End Developer
  • Developed and maintained a comprehensive hotel management system for three hotels in a multi-tenant architecture (.NET Core, React and Python as a wrapper).
  • Designed and implemented a central admin panel for creating and managing the dynamic screens and form components used by hotel departments.
  • Built the backend services that manage dynamic forms and workflows, and significantly improved their performance through query optimisation, caching and refactoring.
  • Managed integrations with MS SQL Server and Salesforce databases for operational processes and ensured data integrity.
  • Proactively identified and resolved performance bottlenecks across the system.
  • Took an active part in the backend infrastructure of a new customer loyalty application built for the hotels.
  • Implemented and managed the AI integrations in the loyalty app that handle user interactions such as booking and payment.
07/2022 — 12/2024 Aurora, Texas, USA

PowerDev

Back End Developer
  • Took part in coding, testing and maintenance on software projects built with .NET Core and C#.
  • Played an active role in designing and developing backend systems, including APIs and database integrations.
  • Managed PostgreSQL integrations to optimise data storage and processing.
  • Contributed to Agile practices in a Scrum team through sprint planning, daily stand-ups and retrospectives.
  • Improved application performance using a range of tools and techniques for optimisation and code efficiency.
  • Successfully managed data integrations from different institutions.
07/2020 — 06/2022 Konya

Milvasoft

Back End Developer & Shareholder
  • Worked as a shareholder and developer on the Opsiyon Cafe-Restaurant ERP project.
  • Developed features in .NET Core that extended the ERP system's capabilities.
  • Managed integration and unit testing.
06/2019 — 08/2019 Ankara

Figensoft

Intern
  • Software development internship.
2017 — 2021 Konya

Selçuk Üniversitesi

Computer Software Engineering, BSc

04 — Contact

A hello is always welcome.

For questions, suggestions or simply to say hi, this is where to find me.

Email sever.emre@hotmail.com GitHub github.com/EmreSeverr LinkedIn linkedin.com/in/emre-sever