Chief Software Engineer (.NET / AWS)

We are looking for a Chief Software Engineer (.NET / AWS) to guide the design and modernization of large-scale, mission-critical applications. You will lead a transition to cloud-native AWS architectures with event-driven designs, employing C# (.NET 8/9) and React, while overseeing migration efforts from .NET Framework 4.8 on ASP.NET/IIS. This role requires setting architectural direction, delivering secure RESTful APIs, codifying infrastructure with IaC, and mentoring engineers. Responsibilities * Drive the technical design and architecture for cloud-native applications, while leading the modernization of legacy ASP.NET/IIS systems to serverless AWS architectures * Build robust backend services with C# 12/13 and .NET 8/9, while maintaining support for legacy .NET Framework 4.8 systems * Create responsive React-based user interfaces * Architect scalable AWS solutions using Lambda, API Gateway, EventBridge, SQS/SNS, DynamoDB, and S3 * Design and document secure RESTful APIs adhering to OpenAPI or SwaggerHub standards * Model and optimize data structures for both relational (Oracle, MS SQL Server) and NoSQL (DynamoDB) databases * Write optimized and complex T-SQL and PSQL queries * Implement strong security controls for API access and identity management with OAuth, AWS Cognito, and strict AWS IAM policy configurations * Automate provisioning of cloud infrastructure using AWS CDK, CloudFormation, or SAM * Establish and maintain high-quality CI/CD pipelines with Git-based workflows * Ensure system reliability and performance through effective monitoring, logging, and alerting using tools such as Datadog and AWS CloudWatch * Mentor junior engineers and shape the team’s architectural strategy Requirements * 7+ years of professional software engineering experience, with a proven track record in a Senior, Lead, or Principal role * At least 2 years of relevant leadership experience * Expertise in C# 12/13 and .NET 8/9, alongside maintaining and migrating .NET Framework 4.8, ASP.NET, and IIS systems * Hands-on skills in building modern web applications using React * Extensive knowledge of AWS serverless and core services, including Lambda, API Gateway, EventBridge, SQS/SNS, DynamoDB, S3, and IAM * Strong proficiency in RESTful API design and documentation with OpenAPI or SwaggerHub * Demonstrated background in relational databases such as Oracle and Microsoft SQL Server, including advanced SQL scripting (T-SQL and PSQL), with familiarity with NoSQL (DynamoDB) * Competency in CI/CD pipeline creation, Git workflows, and Infrastructure as Code tools like AWS CDK, CloudFormation, or SAM * Advanced understanding of secure API design, authentication methods, and AWS Cognito * Familiarity with configuring and utilizing Datadog and CloudWatch for effective monitoring and troubleshooting * English language proficiency at an Advanced level (C1) with exceptional communication abilities in both written and verbal mediums Nice to have * Knowledge of additional programming languages such as Node.js, Python, JavaScript/TypeScript, or Java We offer * International projects with top brands * Work with global teams of highly skilled, diverse peers * Healthcare benefits * Employee financial programs * Paid time off and sick leave * Upskilling, reskilling and certification courses * Unlimited access to the LinkedIn Learning library and 22,000+ courses * Global career opportunities * Volunteer and community involvement opportunities * EPAM Employee Groups * Award-winning culture recognized by Glassdoor, Newsweek and LinkedIn