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.

Please note that 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, etc.) together with modern front-end frameworks.
• Create responsive, intuitive, and high-performing user interfaces using front-end technologies such as React or Angular.
• Collaborate with Product Managers, Designers, and other Engineers to define application requirements and architecture across front-end and back-end layers.
• Oversee deployment, integration, and monitoring of software on cloud platforms such as Microsoft Azure, AWS, or Google Cloud Platform.
• Implement cloud-native principles using technologies like serverless computing, containers (Docker, Kubernetes), and cloud storage solutions.
• Integrate and apply AI technologies within practical, real-world projects.
• Evaluate, select, and implement AI models and frameworks that go beyond basic tool usage.
• Identify opportunities where AI can improve process automation, analytics, or products.
• Explain AI concepts and workflows clearly to both technical and non-technical audiences.
• Ensure application security, performance, and scalability by adhering to best practices in these areas and in cloud architecture.
• Troubleshoot and resolve technical issues in production and non-production environments across full-stack components.
• Participate in code reviews to uphold code quality, reusability, and long-term maintainability across the full stack.
• Simplify deployment through automated CI/CD pipelines to support continuous feature delivery.
• Stay updated on emerging trends in .NET frameworks, front-end frameworks, cloud and AI technologies, and related development tools.
• Mentor junior engineers and contribute to strengthening the team’s overall technical expertise.

Requirements

• Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent practical experience.
• Minimum of 7 years of professional software development experience with C# and .NET technologies (ASP.NET, ASP.NET Core).
• Solid hands-on experience with front-end technologies such as React or Angular, including component architecture, state management, and responsive design.
• Demonstrated ability to build seamless, user-friendly interfaces that integrate effectively with back-end services and APIs.
• Hands-on experience working with cloud platforms such as Microsoft Azure, AWS, or Google Cloud Platform.
• Strong understanding of cloud-native architectures and related tools such as Docker, Kubernetes, or serverless frameworks.
• Demonstrated hands-on experience applying AI technologies to real-world project scenarios.
• Proficiency in evaluating, selecting, and implementing AI models and frameworks beyond basic tool usage.
• Strong understanding of AI/ML fundamentals, including model training, data preprocessing, and prompt engineering.
• Demonstrated ability to identify opportunities where AI can be applied for process automation, analytics, or product enhancement.
• Familiarity with the limitations and best practices related to AI adoption and deployment.
• Ability to explain AI concepts and workflows to both technical and non-technical audiences.
• Proficiency working 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 related tools such as Azure DevOps, Jenkins, or GitHub Actions.
• Solid understanding of software development best practices, including Agile methodologies, unit testing, and version control (Git).
• Strong analytical and problem-solving skills with attention to detail.
• Excellent communication and collaboration skills in team-oriented environments.
• English proficiency at B2 level or above.

We offer

We gather like-minded people:

• Top tech minds driving innovation in AI, cloud, and digital platform modernization.
• Supportive team and agile, startup-like culture.
• Hybrid-by-design mode and opportunity to work remotely within Poland.
• Chance to work abroad for up to 60 days annually.
• Business-driven relocation opportunities.

We provide growth opportunities:

• Career development programs.
• Thought leadership, mentoring, soft skills, and well-being programs.
• Certification (Anthropic, Gemini, GCP, Azure, AWS).
• English classes.

We cover it all:

• Stable pay.
• Participation in the Employee Stock Purchase Plan with a 15% discount.
• Benefits package (health insurance, multisport, shopping vouchers).
• Referral bonuses up to $2,000.
• Offices featuring entertainment and relaxation zones, table tennis and football, free snacks, coffee, and more.
• Corporate, social, and well-being events.

Please note

• Benefits listed above are available to employees only.
• Contractors are welcome; terms of B2B cooperation agreements are agreed individually.
• Only selected candidates will be contacted.