Lead Software Engineer – Business Applications, .net

Jobtailor; Wien; Hybrid; EUR 90.000 - 120.000; Vollzeit

Zusammenfassung

Jobtailor is seeking an experienced C#.NET developer to design, build, and maintain core brokerage and voucher-card platforms in a hybrid office setup in Austria. You will translate MiCAR and financial flows into robust technical designs, mentor teams, and drive code quality while leveraging AI tools.

We value seniority to oversee architecture, security, and external integrations, with English fluency and willingness to travel occasionally. Based in Austria or nearby, with weekly office presence.

Qualifikationen

• 5+ years of professional C#.NET development experience.
• Experience with ASP.NET Core, .NET 9/10, and Blazor.
• Strong grasp of OOP and clean architecture principles.
• Experience designing and maintaining complex business systems.
• Knowledge of SQL Server or PostgreSQL and REST API design.
• AWS cloud infrastructure experience preferred.
• Comfort with AI coding assistants and senior evaluation of AI results.
• Excellent communication skills; English fluent, German a plus.
• Based in Austria or Switzerland; willingness to travel occasionally.

Aufgaben

• Design, build, and maintain C#.NET applications and services for brokerage and voucher card platforms.
• Translate complex regulatory requirements, including MiCAR, into technical designs.
• Leverage AI coding tools while owning code quality and architecture decisions.
• Review AI-generated code for correctness, security, and business logic.
• Architect and maintain integrations with external partners and payment providers.
• Identify performance bottlenecks, security risks, and scalability issues.
• Mentor developers on best practices and responsible AI-tool use.
• Collaborate with product owners and compliance for EU regulatory standards.
• Write clean, documented, testable code and promote engineering standards.
• Participate in code reviews, architecture discussions, and sprint planning.
• Own architecture and business logic for critical platform components.

Kenntnisse

C#.NET Development

ASP.NET Core

Blazor

REST API Design

Cloud Infrastructure

AI Coding Tools

Tools

SQL Server

PostgreSQL

REST API Design

Jobbeschreibung

• Design, build, and maintain C#.NET applications and services for brokerage and voucher card platforms
• Translate complex business and regulatory requirements, including MiCAR, financial transaction flows, and partner integrations, into technical designs
• Use AI coding tools to accelerate development while owning code quality, architecture decisions, and edge‑case handling
• Review AI‑generated code for correctness, security, and business‑logic accuracy
• Architect and maintain integrations with external partners, payment providers, and blockchain/crypto infrastructure
• Identify and proactively address performance bottlenecks, security risks, and scalability issues
• Mentor developers on technical best practices and responsible AI‑tool use
• Collaborate with product owners and compliance stakeholders to meet EU regulatory standards
• Write and maintain clean, documented, testable code and promote engineering best practices
• Participate in code reviews, architecture discussions, and sprint planning
• Own architecture and business logic for critical platform components

Requirements

• 5+ years of professional experience in C#.NET development
• Experience with ASP.NET Core, .NET 9/10, and Blazor
• Strong grasp of object-oriented programming and clean architecture principles
• Proven experience designing and maintaining complex, business-critical systems
• Understanding of SQL Server, PostgreSQL, or similar databases
• Experience with REST API design
• Experience with cloud infrastructure; AWS preferred
• Comfortable using AI coding assistants daily
• Seniority to evaluate and override AI‑generated solutions when necessary
• Strong analytical skills and ability to understand complex business logic
• Familiarity with security best practices and regulatory considerations in financial software is a plus
• Experience with fintech, payments, or crypto/blockchain systems is a strong plus
• Excellent communication skills for explaining technical trade‑offs to non‑technical stakeholders
• Fluency in English required; German is a plus
• Based in Austria or Switzerland
• Comfortable with occasional travel between offices
• Self‑driven, detail‑oriented, and comfortable owning decisions in a fast‑moving environment
• Interest in working from the office once a week

Core Competencies

Demonstrates expertise in C#.NET application development, including architecture and integration with external systems, while ensuring compliance with regulatory standards. Proficient in mentoring teams on best practices and leveraging AI tools for efficient coding and quality assurance.

Highest-signal resume keywords

• C#.NET Development
• ASP.NET Core
• REST API Design
• Cloud Infrastructure (AWS)
• Fintech or Blockchain Experience

ATS Optimization Keywords

Hard Skills

• C#.NET
• ASP.NET Core
• Blazor
• Object-Oriented Programming
• SQL Server
• PostgreSQL
• REST API
• AI Coding Tools
• Clean Architecture
• Performance Optimization

Soft Skills

• Analytical Skills
• Communication Skills
• Mentoring
• Detail-Oriented
• Self-Driven

Industry Keywords

• Financial Software
• Regulatory Compliance
• MiCAR
• Payments
• Crypto

Tools & Technologies

• AI Coding Assistants
• Cloud Infrastructure
• Blockchain Infrastructure
• Payment Providers