We are seeking a highly skilled Lead Software Engineer to drive the design, development and modernization of our core applications. In this role, you will lead our cloud-native transformation, building highly scalable event-driven architectures in AWS using modern C# (.NET 8/9) and React, while strategically managing and migrating our legacy .NET Framework 4.8 systems. As a Principal/Senior contributor, you will shape our architectural vision, design secure RESTful APIs, implement Infrastructure as Code (IaC) and mentor junior engineers.

Responsibilities

• Lead the technical design and architecture of cloud-native applications, driving the modernization strategy to transition legacy ASP.NET/IIS applications to modern serverless AWS architectures
• Develop robust backend services using C# 12/13 and .NET 8/9, while maintaining and supporting legacy .NET Framework 4.8 applications
• Build and maintain responsive user interfaces using React
• Architect and deploy scalable AWS solutions utilizing Lambda, API Gateway, EventBridge, SQS/SNS, DynamoDB and S3
• Design, document and implement secure RESTful APIs using OpenAPI / SwaggerHub standards
• Design and optimize data models across both relational (Oracle, MS SQL Server) and NoSQL (DynamoDB) databases
• Write complex, highly optimized T-SQL / PSQL queries
• Implement robust security protocols, secure API access and identity management using OAuth, AWS Cognito and strict AWS IAM policies
• Automate cloud infrastructure provisioning using AWS CDK, CloudFormation or SAM
• Build and maintain robust CI/CD pipelines using Git-based workflows
• Ensure system reliability and performance by implementing comprehensive monitoring, logging and alerting using Datadog and AWS CloudWatch
• Mentor junior engineers and shape the architectural vision of the team

Requirements

• 5+ years of professional software engineering experience, with a proven track record in a Senior, Lead or Principal capacity
• Expertise in C# 12/13 and .NET 8/9, along with strong experience maintaining and migrating C# .NET Framework 4.8, ASP.NET and IIS environments
• Proficiency in building modern web applications using React
• Extensive hands-on background in AWS serverless and core services: Lambda, API Gateway, EventBridge, SQS/SNS, DynamoDB, S3 and IAM
• Skills in RESTful API design and documentation using OpenAPI / SwaggerHub
• Competency in relational databases (Oracle, Microsoft SQL Server) with strong SQL scripting (T-SQL / PSQL) and familiarity with NoSQL (DynamoDB)
• Hands-on background in CI/CD pipelines, Git workflows and Infrastructure as Code (AWS CDK, CloudFormation or SAM)
• Understanding of secure API design, Auth and AWS Cognito
• Capability to configure and utilize Datadog and CloudWatch for system monitoring and troubleshooting
• English proficiency at B2 level or higher

Nice to have

• Programming background with secondary 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