Senior .NET Engineer with AWS

We are looking for a Senior .NET Developer with AWS experience to join our dynamic and collaborative team.

This engagement focuses on transforming legacy applications into scalable, cloud-native solutions — migrating selected microservices to the latest .NET Core, modernizing from Windows to Linux, optimizing performance, and ensuring seamless integration with AWS services. The work is delivered as an AI-agentic modernization engagement leveraging Kiro and Amazon Transform, aligned with AWS cloud-native best practices and the AWS Well-Architected Framework.

It is a remote position for Poland.

Responsibilities

• Use Kiro and Amazon Transform to accelerate code analysis, refactoring, and migration tasks; validate and optimize tool‑generated outputs

• Design and develop high‑performance, scalable applications using .NET Core with a microservices architecture

• Migrate and refactor legacy .NET Framework (Windows) applications to .NET Core (Linux), ensuring functional parity and improved performance

• Modify and optimize application code and stored procedures to ensure compatibility with PostgreSQL/Aurora PostgreSQL, following AWS development standards

• Implement unit tests and performance tests to ensure application stability, responsiveness, and production readiness

• Partner with database engineers to ensure seamless integration between application code and PostgreSQL; work closely with AWS ProServe consultants on validation and optimization

• Apply AWS Well‑Architected Framework principles across security, reliability, performance efficiency, and operational excellence

• Capture key findings, migration strategies, code conversion patterns, and technical validation results for long‑term maintainability and knowledge transfer

Requirements

• 3+ years of experience in software engineering with a focus on .NET technologies

• Expertise in C#/.NET Core and advanced proficiency in .NET Framework

• Background in AWS native development at an advanced level

• Skills in microservices architecture and modernizing .NET Legacy (Windows) applications to .NET Core (Linux)

• Proficiency in SQL Server, PostgreSQL and Amazon Aurora PostgreSQL

• Competency in stored procedure migration (T-SQL → PL/pgSQL)

• Qualifications in unit and performance testing

• Excellent English communication skills (B2+ level) with availability to overlap with the US EST time zone

Nice to have

• Familiarity with Kiro and Amazon Transform

• Knowledge of AWS DMS/SCT

• Understanding of Docker and containerization on AWS

• Experience with Amazon ECS/EKS

• Capability to build CI/CD pipelines using GitHub Actions and CodePipeline

We offer/Benefits
We gather like-minded people:

• Engineering community of industry professionals

• Friendly team and enjoyable working environment

• Flexible schedule 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:

• Outstanding career roadmap

• Leadership development, career advising, soft skills, and well-being programs

• Certification (GCP, Azure, AWS)

• Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru

• English classes

We cover it all:

• Stable income (Employment Contract or B2B)

• Participation in the Employee Stock Purchase Plan

• Benefits package (health insurance, multisport, shopping vouchers)

• Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more

• Referral bonuses

• Corporate, social and well-being events

Please, note:

• The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview.

• We will reach out to selected candidates exclusively.

EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.