Lead .NET Engineer (Full-Stack, Front-End, Cloud & AI)

We are seeking a skilled Lead .NET Engineer with deep knowledge of front-end, cloud, and AI to join a dynamic development team supporting a key client. In this role, you will design, build, and maintain secure, scalable, and reliable web applications and services using .NET, cloud, and AI technologies, together with solid front-end development skills. You will collaborate closely with cross-functional teams to deliver innovative solutions that support business goals and enhance user experience.

Working from the office in Katowice, Gdansk, Poznan, Lodz, Warsaw, Wroclaw, or Krakow 3 days per week is required.

Responsibilities

• Develop, test, and maintain web-based applications, services, and APIs using .NET technologies (C#, ASP.NET Core) and modern front-end frameworks.
• Create responsive, intuitive, high-performing user interfaces using React or Angular.
• Collaborate with Product Managers, Designers, and Engineers to define application requirements and architecture across front-end and back-end layers.
• Oversee deployment, integration, and monitoring of software on Microsoft Azure, AWS, or Google Cloud Platform.
• Implement cloud-native principles using serverless computing, containers (Docker, Kubernetes), and cloud storage solutions.
• Integrate and apply AI technologies in practical, real-world projects.
• Evaluate, select, and implement AI models and frameworks beyond basic tool usage.
• Identify opportunities for AI to improve process automation, analytics, or products.
• Explain AI concepts and workflows to technical and non-technical audiences.
• Ensure application security, performance, and scalability through development and cloud-architecture best practices.
• Troubleshoot and resolve technical issues in production and non-production environments across full-stack components.
• Participate in code reviews to maintain code quality, reusability, and long-term maintainability.
• Simplify deployment through automated CI/CD pipelines supporting continuous feature delivery.
• Stay current with .NET, front-end, cloud, AI, and related development tools.
• Mentor junior engineers and strengthen the team’s technical expertise.

Requirements

• Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent practical experience.
• At least 7 years of professional software development experience with C# and .NET technologies, including ASP.NET and ASP.NET Core.
• Hands-on React or Angular experience, including component architecture, state management, and responsive design.
• Ability to build seamless, user-friendly interfaces integrated with back-end services and APIs.
• Hands-on experience with Microsoft Azure, AWS, or Google Cloud Platform.
• Strong understanding of cloud-native architectures and tools such as Docker, Kubernetes, or serverless frameworks.
• Demonstrated experience applying AI technologies to real-world project scenarios.
• Ability to evaluate, select, and implement AI models and frameworks beyond basic tool usage.
• Understanding of AI/ML fundamentals, including model training, data preprocessing, and prompt engineering.
• Ability to identify AI opportunities for process automation, analytics, or product enhancement.
• Familiarity with AI adoption and deployment limitations and best practices.
• Ability to explain AI concepts and workflows to technical and non-technical audiences.
• Proficiency with relational and non-relational databases, such as SQL Server, PostgreSQL, MongoDB, or DynamoDB.
• Hands-on experience designing and building RESTful APIs.
• Familiarity with CI/CD pipelines and tools such as Azure DevOps, Jenkins, or GitHub Actions.
• Understanding of Agile methodologies, unit testing, and Git version control.
• Strong analytical problem-solving skills and attention to detail.
• Excellent communication and collaboration skills.
• English proficiency at B2 level or above.

We offer

• Hybrid work and the opportunity to work remotely within Poland.
• Opportunity to work abroad for up to 60 days annually.
• Business-driven relocation opportunities.
• Career development programs, thought leadership, mentoring, soft-skills, and well-being programs.
• Certification opportunities in Anthropic, Gemini, GCP, Azure, and AWS.
• English classes.
• Stable pay.
• Employee Stock Purchase Plan participation with a 15% discount.
• Benefits package including health insurance, multisport, and shopping vouchers.
• Referral bonuses up to $2,000.
• Offices with entertainment and relaxation zones, table tennis, football, free snacks, and coffee.
• Corporate, social, and well-being events.

Benefits listed above are available to employees only.

Contractor cooperation is available. Terms of B2B cooperation agreements are agreed individually.