Seçil is available for hire

Seçil Acar

Verified Expert in Engineering

Full-stack Developer

Location

Gänserndorf, Austria

Toptal Member Since

September 16, 2022

Starting his IT journey over 35 years ago with an IBM 8086, Secil has carved a niche in the Microsoft tech stack, notably C#, .NET Core, and Azure Functions. His deep-rooted experience in finance has led him to collaborate with premier banks and credit institutions. He's masterminded innovations like e-banking platforms and efficient web applications, highlighting his expertise in creating scalable, fault-tolerant solutions.

Portfolio

Intertech

Google Kubernetes Engine (GKE), Azure Cloud Services, Red Hat OpenShift...

Acarsoft

Windows Forms (WinForms), Windows Mobile, XAML, MSSQLCE, Delphi 7, ActiveX...

Tam & Derece

Smalltalk, IBM Db2, AS/400, Windows Server, User Interface (UI), SQL, Databases...

Experience

C# - 20 years Windows PowerShell - 3 years ASP.NET Core - 3 years Google Kubernetes Engine (GKE) - 3 years Docker - 3 years Kubernetes - 3 years Git - 3 years Sage Intacct - 1 year

Availability

Part-time

Preferred Environment

Windows, Docker, Kubernetes, MacOS, Visual Studio 2022, Windows PowerShell, Git, Visual Studio Code (VS Code), C#, C#.NET

The most amazing...

...project I've developed is the "tire-trace" mobile and windows desktop app for Bandag, now used in 16 countries across Europe, Asia, and Africa.

Work Experience

Senior Full-stack Developer

2005 - PRESENT

Intertech

Built an accounting system with the Knative serverless technology. It autogenerates the transactions according to the respective definition with minimal APIs managed by a master API orchestration and everything communicating by RabbitMQ.
Created an Android mobile app to collect information from a password-protected external website about the total time users spend inside the company building, displaying the user's status against the monthly goal.
Developed a CD pipeline to deploy legacy apps and database objects from the source to the desired destiny via agents. It also supports a business workflow from entering to preview, approval, and exit.

Technologies: Google Kubernetes Engine (GKE), Azure Cloud Services, Red Hat OpenShift, ASP.NET Core, Jira, Jenkins, Azure DevOps, Git, Docker, Minikube, Jaeger, Prometheus, InfluxDB, Grafana, PostgreSQL, Redis, Serverless, RabbitMQ, Apache Kafka, Visual Studio, C#, JavaScript, VBScript, Python, Windows Forms (WinForms), Blazor, Tailwind CSS, CSS, .NET, HTML, User Interface (UI), API Integration, React, Data Reporting, Microsoft Power BI, Reports, Power BI Embedded, APIs, .NET Core, ASP.NET, ASP.NET MVC, Entity Framework, Azure SQL, SQL, Databases, Software Development, Algorithms, Full-stack, MVC Design, Bootstrap, Azure, SQL Server Integration Services (SSIS), Microsoft SQL Server, Visual Basic 6 (VB6), PDF, Visual Basic, Visual Basic for Applications (VBA), Linux, C#.NET, SQL Server 2016, Visual Studio 2019, VB.NET WinForms, Deployment, Troubleshooting, Root Cause Analysis, Architecture, Software Architecture, Integration, ASP.NET Web Forms, Microsoft Access, ODBC, Transport Layer Security (TLS), Microservices, Azure Cosmos DB, SignalR, HTTP Server, Universal Windows Platform (UWP), XML, Finance, Amazon Web Services (AWS), AWS Cloud Architecture, Core Banking Systems, Solution Architecture, Visual Studio .NET, JSON, CSV Export, CSV Import, .NET MAUI, Object-oriented Programming (OOP), XSD, Serializer/Deserializer (SerDes), Web Applications, Razor, Microsoft Visual Studio, Windows Desktop Software, Desktop App Development, REST APIs, API Connectors, WebAssembly, Azure Active Directory, Multitenancy, Visual Basic .NET (VB.NET), Azure App Service, VB, DLL, ASCII, WebSockets, Printer Drivers, Hardware Drivers, System Service & Hardware Control, Windows Services, .NET 6, Dapper, SQLite, Excel VBA, Office Add-ins, Microsoft Power Automate, TypeScript, Dashboards, HTML5, jQuery, ASP.NET Web API, Web Services Description Language (WSDL), SOAP, Microsoft Power Apps, .NET 4, WCF Web Services, API Development, Full-stack Development, IIS, Microsoft Excel, Excel Add-ins, Power Query, Office 365, Unit Testing, VB.NET, Automation, Mono

Software Developer

2002 - 2005

Acarsoft

Developed tire-trace application for Bandag with Delphi, later refactored using C#.NET.
Built an ActiveX Grid component with Delphi for a Smalltalk application.
Created an accounting software package for SMEs with C#.NET.

Technologies: Windows Forms (WinForms), Windows Mobile, XAML, MSSQLCE, Delphi 7, ActiveX, Smalltalk, C#, User Interface (UI), SQL, Databases, Software Development, Full-stack, Microsoft SQL Server, Active Server Pages (ASP), Visual Basic 6 (VB6), .NET, PDF, Visual Basic, Visual Basic for Applications (VBA), Linux, C#.NET, Deployment, Troubleshooting, Root Cause Analysis, Architecture, Software Architecture, Microsoft Access, C++, ODBC, Windows CE, Windows Embedded, XML, Visual Studio .NET, CSV Export, CSV Import, Inventory Management, Object-oriented Programming (OOP), DevExpress, Microsoft Visual Studio, Windows Desktop Software, Desktop App Development, Visual Basic .NET (VB.NET), VB, DLL, ASCII, WebSockets, Printer Drivers, Hardware Drivers, System Service & Hardware Control, Windows Services, SQLite, Excel VBA, Office Add-ins, Full-stack Development, Microsoft Excel, Visual Studio Tools for Office (VSTO), Excel Add-ins, VB.NET

Software Developer

2001 - 2002

Tam & Derece

Developed an accounting applications package for SMEs with Smalltalk.
Provided second-level support via telephone and email.
Configured and provided on-site training on the package to new customers.

Technologies: Smalltalk, IBM Db2, AS/400, Windows Server, User Interface (UI), SQL, Databases, Software Development, Full-stack, Microsoft SQL Server, Active Server Pages (ASP), Visual Basic 6 (VB6), .NET, PDF, Visual Basic, Visual Basic for Applications (VBA), Linux, Deployment, Troubleshooting, Root Cause Analysis, Microsoft Access, C++, ODBC, Windows CE, Windows Embedded, XML, MySQL, Visual Studio .NET, CSV Export, CSV Import, Inventory Management, Object-oriented Programming (OOP), Windows Desktop Software, Desktop App Development, Visual Basic .NET (VB.NET), VB, DLL, ASCII, WebSockets, Printer Drivers, Hardware Drivers, System Service & Hardware Control, Windows Services, Excel VBA, Office Add-ins, Full-stack Development, Microsoft Excel, Visual Studio Tools for Office (VSTO)

Software Developer

1995 - 2001

TARIS

Developed an app scheduled to generate and print MIS reports every morning.
Created an app to integrate the shop cashier device of the company's agriculture products.
Built an app to control a truck's weighbridge. The app tracks in and out trucks' weights, stores them in the database, and prints the receipts.

Technologies: AS/400, IBM RPG, Visual Basic 6 (VB6), Delphi 7, User Interface (UI), SQL, Databases, Software Development, Full-stack, Microsoft SQL Server, Active Server Pages (ASP), PDF, Visual Basic, Visual Basic for Applications (VBA), Linux, Deployment, Troubleshooting, Root Cause Analysis, Microsoft Access, C++, ODBC, XML, PHP, MySQL, CSV Export, CSV Import, Inventory Management, Java, Object-oriented Programming (OOP), Windows Desktop Software, Desktop App Development, VB, DLL, ASCII, WebSockets, Printer Drivers, Hardware Drivers, System Service & Hardware Control, Windows Services, Excel VBA, Office Add-ins, Full-stack Development, Microsoft Excel, Visual Studio Tools for Office (VSTO)

Experience

Core Banking Accounting System

Created an ASP.NET Core-based serverless system with minimal APIs, communicating with CBS via RabbitMQ. All the APIs have one transaction role autogenerated by a batch .NET Core application according to the transaction definition. I designed and developed this entire accounting system from scratch.

Bandag Tracer

A truck tire tracing desktop and mobile application. Users on the field measure the tires on the truck, fill in the values (pressure, tread length, any problems) on the mobile application, and return to the office, where they generate the report for the customer.

Sage Intacct ERP Integration

A C#.Net-based library project used by SSIS packages to download data from the ERP system and transfer data to the account payables tables in SQL Server.

Benefits: observable, high-performant, solid, durable, and easily deployable

Executive Dashboards

Using both PowerBI and Python, I meticulously designed and implemented executive-level dashboards. These tools were specifically tailored to present key performance indicators, giving management a clear and comprehensive understanding of cost structures, revenue streams, and potential operational risks. This initiative ensured that decision-makers were equipped with precise and actionable insights for strategic planning.

Skills

Languages

C#, JavaScript, VBScript, Delphi 7, Visual Basic 6 (VB6), HTML, SQL, Visual Basic, Visual Basic for Applications (VBA), C#.NET, XML, XSD, Visual Basic .NET (VB.NET), VB, Excel VBA, HTML5, T-SQL (Transact-SQL), Web Services Description Language (WSDL), VB.NET, XAML, CSS, Active Server Pages (ASP), Python, Smalltalk, IBM RPG, C++, PHP, Java, TypeScript

Frameworks

Windows PowerShell, ASP.NET Core, ActiveX, Blazor, .NET, .NET Core, ASP.NET, ASP.NET MVC, Bootstrap, ASP.NET Web Forms, Razor, ASP.NET Web API, .NET 4, Mono, Tailwind CSS, VB.NET WinForms

Libraries/APIs

Windows Forms (WinForms), ODBC, REST APIs, NetSuite API, jQuery, API Development, Entity Framework, React, SignalR

Tools

Jenkins, Visual Studio, Docker Compose, Microsoft Power BI, Power BI Embedded, Visual Studio 2019, Microsoft Access, Visual Studio .NET, Microsoft Visual Studio, Microsoft Dynamics, Microsoft Excel, Visual Studio Tools for Office (VSTO), Power Query, Git, Google Kubernetes Engine (GKE), Jira, RabbitMQ, Grafana, Crystal Reports, Azure App Service, Dapper, Microsoft Power Apps, Tableau

Paradigms

MVC Design, Microservices, Object-oriented Programming (OOP), Desktop App Development, Unit Testing, Automation, Azure DevOps, Business Intelligence (BI)

Platforms

Windows, Docker, Visual Studio Code (VS Code), Windows Mobile, Windows Server, Windows CE, Sage Intacct, Kubernetes, Red Hat OpenShift, Azure, Linux, Microsoft Power Automate, MacOS, Apache Kafka, AS/400, Universal Windows Platform (UWP), Amazon Web Services (AWS)

Storage

MSSQLCE, Azure SQL, Databases, Microsoft SQL Server, SQL Server 2016, JSON, SQLite, Azure Cloud Services, Redis, IBM Db2, SQL Server Integration Services (SSIS), Azure Active Directory, InfluxDB, PostgreSQL, SQL Compact CE, Azure Cosmos DB, MySQL

Other

User Interface (UI), API Integration, Data Reporting, Reports, APIs, Software Development, Algorithms, Full-stack, PDF, Deployment, Troubleshooting, Root Cause Analysis, Architecture, Software Architecture, Integration, Transport Layer Security (TLS), Windows Embedded, HTTP Server, Core Banking Systems, Solution Architecture, CSV Export, CSV Import, Inventory Management, Serializer/Deserializer (SerDes), Web Applications, Windows Desktop Software, API Connectors, Multitenancy, DLL, ASCII, WebSockets, Printer Drivers, Hardware Drivers, System Service & Hardware Control, Windows Services, .NET 6, Office Add-ins, SOAP, Webhooks, WCF Web Services, Full-stack Development, IIS, Excel Add-ins, Office 365, Regulatory Reporting, Minikube, Jaeger, Serverless, Knative, Finance, .NET MAUI, Dashboards, Prometheus, AWS Cloud Architecture, DevExpress, WebAssembly, FeneVision ERP, NetSuite, Data Analysis

Education

1995 - 1997

Associate Degree in Finance

Anadolu University - Eskisehir, Turkey

Collaboration That Works

How to Work with Toptal

Toptal matches you directly with global industry experts from our network in hours—not weeks or months.

Share your needs

Discuss your requirements and refine your scope in a call with a Toptal domain expert.

Choose your talent

Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.

Start your risk-free talent trial

Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.

Top talent is in high demand.

Start hiring