Senior .NET Fullstack Developer — Onsite Vienna Freelance

DropaCode; Wien; On-site; EUR 64,000 - 84,000; Full time

Job summary

DropaCode is seeking a Fullstack .NET Developer for an on-site assignment in Vienna, Austria, to design, develop and maintain secure integration components within an enterprise system environment.

The role focuses on .NET (C#) development, system interoperability and secure data exchange with external governmental and financial intelligence systems. On-site work only, freelance engagement with an initial 6 months.

Qualifications

• Minimum 5 years of professional software development experience.
• At least 3 years of hands-on C#/.NET development.
• Minimum 2–3 years of hands-on DevOps experience in enterprise environments.
• Experience in secure software development for sensitive data environments.
• Familiarity with POCO/DTO modelling and clean code principles.
• Experience with RESTful and SOAP services; secure integration patterns.

Responsibilities

• Analyze business and technical requirements provided by stakeholders and system architects.
• Review external system interfaces (APIs, databases, XML feeds) to determine the integration approach.
• Design integration solutions using .NET (C#) aligned with the system architecture.
• Define data flow between the platform and external systems, object models and mapping strategies, and the authentication and security approach.

Skills

C# (.NET)

DevOps

Secure development

RESTful APIs

SOAP APIs

OAuth 2.0/JWT

TLS/HTTPS security

POCO modelling/SOLID

JSON/XML serialization

English fluency

Education

Bachelor's degree in CS or related

Tools

AutoMapper

Job description

DropaCode is seeking a Fullstack .NET Developer for an on-site assignment in Vienna, Austria, to design, develop and maintain secure integration components within an enterprise system environment.

The role focuses on .NET (C#) development, system interoperability and secure data exchange with external governmental and financial intelligence systems. On-site work only, freelance engagement with an initial 6 months.