Seçil A.

Seçil A.

Full-stack Developer

Gänserndorf, Austria
Hire Seçil A. Hire Seçil A. Hire Seçil A.

About Me

Seçil is a Senior Full-stack Developer with a strong background in API integrations, cloud infrastructure, and database management and proven expertise in integrating Sage Intacct API. He designs and implements Sage Intacct API integrations, enabling seamless financial data synchronization for enterprise clients. Seçil develops scalable full-stack applications and optimizes data workflows for enterprise solutions, building secure, high-performance systems, managing cloud-based architectures, and delivering seamless user experiences. He specializes in applying the Microsoft stack (particularly C#, .NET Core, and Azure Functions) in the finance industry, having developed e-banking, credit card, core banking, and cloud solutions and efficient, highly scalable, fault-tolerant web applications.

C 20 years Google Kubernetes Engine (GKE) 3 years Git 3 years Kubernetes 3 years ASP.NET Core 3 years Windows PowerShell 3 years Docker 3 years Windows Server Vbscript Visual Studio Windows Webhooks SOAP Transport Layer Security (TLS) Integration Algorithms Data Reporting Windows Services Windows Desktop Software Full-stack User Interface (UI) Sage Intacct 3 years C# 20 years C#.NET 20 years C#.NET WinForms 20 years Python 5 years Typescript 5 years JavaScript 20 years

Work history

Freelance
Freelance
Senior Full-stack Developer | API & Cloud Solutions
2020 - Present (5 years)
Remote
  • Designed and implemented Sage Intacct API integrations, enabling seamless financial data synchronization for enterprise clients.

  • Developed full-stack applications for processing corporate donations and handling large-scale financial transactions.

  • Built cloud-based architectures on AWS and Azure using serverless functions for scalability and cost efficiency.

  • Designed microservices and event-driven systems to ensure real-time data processing and secure API communication.

  • Developed custom API authentication layers (OAuth, JWT) for secure third-party integrations.

  • Automated CI/CD pipelines for continuous deployment and system monitoring.

Sage IntacctAPI IntegrationData Synchronization Enterprise Full Stack DevelopmentAccounting & FinanceAWSAzure AWS Cloud Architecture AWS ServerlessMicroservicesEvent-driven Design (EDD) Data ProcessingAuthentication OAuthJSON Web Tokens (JWT) CI/CD Pipelines
Intertech
Intertech
Senior Software Engineer
2018 - 2020 (2 years)
Remote
  • Developed and deployed financial data processing platforms for banks and financial institutions.

  • Integrated multiple third-party financial APIs, including payment gateways and accounting systems.

  • Built high-performance Blazor and .NET Core applications, optimizing database transactions and API calls.

  • Created custom analytics dashboards using React and JavaScript, improving financial reporting efficiency.

ASP.NET CoreJIRAGitC#JavaScriptBlazor.NETAPI IntegrationReact Data Reporting Microsoft Power BI Reports APIs.NET CoreASP.NETASP.NET MVCSQLC#.NET Core Banking Systems Data ProcessingBanking & Finance Analytical Dashboards
DenizBank AG
DenizBank AG
Senior Software Developer
2013 - 2018 (5 years)
Vienna, Austria
  • Engineered secure financial applications, ensuring real-time banking transactions using .NET and SQL Server.

  • Designed data management systems that improved corporate financial reporting and data integrity.

  • Worked closely with DevOps teams to deploy applications in cloud environments with automated monitoring and logging.

Portfolio

Core Banking Accounting System
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. Designed and developed the entire accounting system from scratch.

Sage Intacct ERP Integration
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.

Bandag Tracer
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 a report for the customer.

Education

Associate Degree in Finance
Associate Degree in Finance
Anadolu University - Turkey
1995 - 1997 (2 years)