Job Title: Principal C# Engineer | Principal Software Engineer | C++ | Remote – Hungary

Type: B2B | 6-Months Contract to Hire

Location: Hungary (Remote) – Candidates must be based in Hungary

Principal C# Engineer | Principal Software Engineer | C++ | Remote Hungary

We are hiring a Principal C# Engineer for a B2B contract-to-hire role in Hungary (Remote). The ideal Principal Software Engineer will be a highly skilled hands-on technical expert, passionate about C#, C++, and Computer Vision. This role requires strong leadership in software architecture, design, and optimization, with a focus on delivering scalable, high-performance, and maintainable solutions.

This is an exciting opportunity for an experienced Principal C# Engineer or Principal Software Engineer who thrives on technical challenges, system architecture, and mentoring engineering teams.

Key Responsibilities

• Design and implement architectural improvements for C++ and C# systems.
• Lead modernization, scalability, and performance optimization of the Computer Vision library.
• Establish and enforce technical standards and best practices for C# and C++ development.
• Implement and optimize critical algorithms, error handling, and testing frameworks.
• Develop and maintain high-quality, reliable, and maintainable code for production systems.
• Drive end-to-end feature delivery, from concept to deployment, ensuring performance and scalability.
• Collaborate with cross-functional teams to align software architecture with product goals.

Technical Mentorship & Collaboration

• Mentor senior and junior engineers in C#, C++, and Computer Vision development.
• Provide technical leadership on modernization and refactoring initiatives.
• Promote adoption of modern C++ and C# engineering practices.
• Lead technical discussions, design reviews, and knowledge-sharing sessions.
• Contribute to roadmap planning with deep technical insights.

Architecture & Innovation

• Design and implement high-performance, memory-efficient algorithms.
• Lead refactoring, modernization, and optimization efforts.
• Develop Computer Vision algorithms with a focus on Intelligent Document Processing.
• Establish cross-platform compatibility patterns for Windows, Linux, and Mac.
• Build robust, scalable library architectures for internal teams.
• Ensure reliability and performance of production-grade software systems.

Required QualificationsEducation & Experience:

• Bachelor’s or Master’s degree in Computer Science, Engineering, or related field.
• 10+ years of software engineering experience.
• Proven expertise in C#, C++, and cross-platform development.
• Experience building and maintaining production-grade, high-performance systems.

Technical Expertise:

• Deep knowledge of modern C# and C++.
• Strong understanding of software architecture and design patterns.
• Background in Computer Vision, Machine Learning, and algorithm optimization.
• Experience with profiling, performance tuning, and system-level programming.
• Expertise in building maintainable, well-tested, and scalable components.

Technical Leadership & Communication:

• Proven track record in technical leadership and mentoring.
• Experience leading architectural and design decision-making.
• Excellent collaboration and cross-team communication skills.
• Strong problem-solving skills and ability to deliver scalable software solutions.

Why Apply?

• B2B contract with the opportunity to convert to full-time.
• 100% remote work within Hungary.
• Work on cutting-edge Computer Vision and C# / C++ software architecture.
• Lead modernization and innovation within a high-performing engineering team.

Apply Now

If you are a Principal C# Engineer, Principal Software Engineer, or C++ Technical Lead based in Hungary, and you are passionate about Computer Vision, software architecture, and high-performance systems, we’d love to hear from you.

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