Senior C#.NET Solution Architect - Fintech/Crypto

Cryptonow; Wien; Hybrid; EUR 90.000 - 130.000; Vollzeit

Benefits dieser Stelle

Ownership over architecture

Hybrid work arrangement

Competitive compensation

Professional growth opportunities

Zusammenfassung

Cryptonow in Vienna or Baar seeks an experienced C#.NET Developer to own architecture and business logic for our brokerage and voucher-card platforms. You will translate regulatory and financial requirements into robust, maintainable systems, using AI as a tool, not a substitute for judgement.

You will collaborate with product, compliance, and other engineers to deliver scalable solutions, review AI-generated code, and mentor juniors in secure, compliant software design.

Qualifikationen

• 5+ years of professional experience in C#.NET development (ASP.NET Core, .NET 9/10, Blazor), with strong OOP and clean architecture.
• Proven experience designing and maintaining complex, business-critical systems—not just CRUD apps.
• Solid understanding of databases (SQL Server, PostgreSQL, or similar), API design (REST), and cloud infrastructure (AWS).

Aufgaben

• Design, build, and maintain C#.NET applications and services powering our brokerage platform and voucher card systems.
• Translate complex business and regulatory requirements (MiCAR, financial transaction flows, partner integrations) into clear technical designs.
• Use AI coding tools to accelerate development—while owning code quality, architecture decisions, and edge-case handling that AI tools routinely miss.
• Review and critically evaluate AI-generated code for correctness, security, and business-logic accuracy before it ships.
• Architect and maintain integrations with external partners, payment providers, and blockchain/crypto infrastructure.
• Identify performance bottlenecks, security risks, and scalability issues, and design solutions proactively.
• Mentor other developers on technical best practices and effective use of AI tooling.
• Collaborate with product owners and compliance stakeholders to ensure systems meet EU regulatory standards.
• Write and maintain clean, well-documented, testable code and champion good engineering practices across the team.
• Participate in code reviews, architecture discussions, and sprint planning.

Kenntnisse

C#.NET development

OOP & clean architecture

AI coding assistants

Databases (SQL Server, PostgreSQL)

REST API design

Cloud (AWS)

Communication skills

English fluency

Tools

ASP.NET Core

.NET 9/10

Blazor

SQL Server

PostgreSQL

AWS

Jobbeschreibung

Cryptonow in Vienna or Baar seeks an experienced C#.NET Developer to own architecture and business logic for our brokerage and voucher-card platforms. You will translate regulatory and financial requirements into robust, maintainable systems, using AI as a tool, not a substitute for judgement.

You will collaborate with product, compliance, and other engineers to deliver scalable solutions, review AI-generated code, and mentor juniors in secure, compliant software design.