We are seeking a skilled Lead .NET Engineer with deep knowledge of Front-End, Cloud, and AI to join a dynamic development team supporting one of our key clients. In this role, you will design, build, and maintain secure, scalable, and reliable web applications and services using .NET, cloud, and AI technologies, in addition to solid front-end development skills. You'll 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.ResponsibilitiesDevelop, test, and maintain web-based applications, services, and APIs using .NET technologies (C#, ASP.NET Core, etc.) together with modern front-end frameworksCreate responsive, intuitive, and high-performing user interfaces using front-end technologies such as React or AngularCollaborate with Product Managers, Designers, and other Engineers to define application requirements and architecture across front-end and back-end layersOversee deployment, integration, and monitoring of software on cloud platforms such as Microsoft Azure, AWS, or Google Cloud PlatformImplement cloud-native principles using technologies like serverless computing, containers (Docker, Kubernetes), and cloud storage solutionsIntegrate and apply AI technologies within practical, real-world projectsEvaluate, select, and implement AI models and frameworks that go beyond basic tool usageIdentify opportunities where AI can improve process automation, analytics, or productsExplain AI concepts and workflows clearly to both technical and non-technical audiencesEnsure application security, performance, and scalability by adhering to best practices in these areas and in cloud architectureTroubleshoot and resolve technical issues in production and non-production environments across full-stack componentsParticipate in code reviews to uphold code quality, reusability, and long-term maintainability across the full stackSimplify deployment through automated CI/CD pipelines to support continuous feature deliveryStay updated on emerging trends in .NET frameworks, front-end frameworks, cloud and AI technologies, and related development toolsMentor junior engineers and contribute to strengthening the team's overall technical expertiseRequirementsBachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experienceMinimum 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 designDemonstrated ability to build seamless, user-friendly interfaces that integrate effectively with back-end services and APIsHands-on experience working with cloud platforms such as Microsoft Azure, AWS, or Google Cloud PlatformStrong understanding of cloud-native architectures and related tools such as Docker, Kubernetes, or serverless frameworksDemonstrated hands-on experience applying AI technologies to real-world project scenariosProficiency in evaluating, selecting, and implementing AI models and frameworks beyond basic tool usageStrong understanding of AI/ML fundamentals, including model training, data preprocessing, and prompt engineeringDemonstrated ability to identify opportunities where AI can be applied for process automation, analytics, or product enhancementFamiliarity with the limitations and best practices related to AI adoption and deploymentAbility to explain AI concepts and workflows to both technical and non-technical audiencesProficiency working with relational and non-relational databases such as SQL Server, PostgreSQL, MongoDB, or DynamoDBHands-on experience designing and building RESTful APIsFamiliarity with CI/CD pipelines and related tools such as Azure DevOps, Jenkins, or GitHub ActionsSolid understanding of software development best practices, including Agile methodologies, unit testing, and version control (Git)Strong analytical and problem-solving skills with attention to detailExcellent communication and collaboration skills in team-oriented environmentsEnglish proficiency at B2 level or aboveWe offerWe gather like-minded people:Top tech minds driving innovation in AI, cloud and digital platform modernizationSupportive team and agile, startup-like cultureHybrid by design mode and opportunity to work remotely within PolandChance to work abroad for up to 60 days annuallyBusiness-driven relocation opportunitiesWe provide growth opportunities:Career development programsThought leadership, mentoring, soft skills and well-being programsCertification (Anthropic, Gemini, GCP, Azure, AWS)English classesWe cover it all:Stable payParticipation in the Employee Stock Purchase Plan with a 15% discountBenefits package (health insurance, multisport, shopping vouchers)Referral bonuses up to $2,000Offices featuring entertainment and relaxation zones, table tennis and football, free snacks, coffee and moreCorporate, social and well-being eventsPlease, note:Benefits listed above are available to employees onlyWe are open for working with Contractors. Terms of B2B cooperation agreements are agreed individuallyWe will reach out to selected candidates exclusivelyEPAM is global leader in AI transformation engineering and integrated consulting, serving Forbes Global 2000 companies and ambitious startups. With over thirty years of expertise in custom software, product and platform engineering, we empower our clients to become AI-Native enterprises, driving measurable value from innovation and digital investments.