Senior .NET Engineer (Full-Stack, Front-End, Cloud)

EPAM Systems, Inc.; Katowice; Hybrid; PLN 150,000 - 210,000; Full time

Job summary

EPAM Systems, Inc. in Katowice is seeking an experienced Senior .NET Engineer with cloud expertise to design, build, and maintain secure, scalable web applications and services using .NET and modern frontend frameworks.

You will collaborate with product managers, designers, and other engineers, deploy to Azure/AWS/GCP, and guide junior team members while focusing on code quality and performance. This role requires 3 days onsite per week in the Katowice area and offers a hybrid model.

Qualifications

• Bachelor's degree or equivalent practical experience in computer science or related field.
• 5+ years of professional software development with C# and .NET (ASP.NET/ASP.NET Core).
• Strong front-end experience with React or Angular and responsive design.
• Experience building interfaces that integrate with back-end services and APIs.
• Cloud platforms such as Azure, AWS, or Google Cloud, and cloud-native architectures.

Responsibilities

• Build, test, and maintain web-based applications and APIs using .NET technologies.
• Develop responsive front-ends with React or Angular.
• Collaborate with PMs, Designers, and Engineers to define requirements and architecture.
• Deploy, monitor, and scale applications across cloud platforms (Azure/AWS/GCP).
• Apply cloud-native patterns (containers, serverless) and CI/CD pipelines.
• Ensure security, performance, and quality across the stack.
• Lead code reviews and mentor junior engineers.

Skills

C#

ASP.NET Core

React

Angular

RESTful APIs

CI/CD

Git

Agile methodologies

Team leadership

Education

Bachelor's degree in Computer Science or related

Tools

Azure

AWS

Google Cloud Platform

Docker

Kubernetes

Azure DevOps

Jenkins

GitHub Actions

Job description

We're looking for an experienced Senior .NET Engineer with Cloud expertise to become part of a dynamic development team working on a project for one of our key clients. Your role will involve designing, building, and maintaining secure, scalable, and robust web applications and services through .NET and the cloud, along with strong front-end development skills. You'll work closely with cross-functional teams to deliver innovative solutions that support business objectives and improve 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

• Build, test, and maintain web-based applications, services, and APIs leveraging .NET technologies (C#, ASP.NET Core, etc.) alongside modern front-end frameworks
• Develop responsive, intuitive, and high-performing user interfaces using front-end technologies such as React or Angular
• Work with Product Managers, Designers, and other Engineers to establish application requirements and architecture across both front-end and back-end layers
• Manage deployment, integration, and monitoring of software across cloud platforms including Microsoft Azure, AWS, or Google Cloud Platform
• Apply cloud-native principles through technologies such as serverless computing, containers (Docker, Kubernetes), and cloud storage solutions
• Guarantee application security, performance, and scalability by following best practices in these areas along with cloud architecture
• Diagnose and fix technical problems in both production and non-production settings, spanning full-stack components
• Take part in code reviews to maintain code quality, reusability, and long-term maintainability across the full stack
• Streamline deployment through automated CI/CD pipelines, enabling continuous feature delivery
• Keep current with emerging trends in .NET frameworks, front-end frameworks, cloud technologies, and related development tools
• Guide junior engineers and help build the team's collective technical expertise

Requirements

• Bachelor's degree in Computer Science, Engineering, or related discipline, or comparable practical experience
• At least 5 years of professional software development experience with C# and .NET technologies (ASP.NET, ASP.NET Core)
• Strong hands-on experience with front-end technologies such as React or Angular, including component architecture, state management, and responsive design
• Proven ability to build seamless, user-friendly interfaces that integrate effectively with back-end services and APIs
• Practical experience working with cloud platforms like Microsoft Azure, AWS, or Google Cloud Platform
• Solid grasp of cloud-native architectures and associated tools such as Docker, Kubernetes, or serverless frameworks
• Skilled in working with relational and non-relational databases such as SQL Server, PostgreSQL, MongoDB, or DynamoDB
• Practical experience designing and developing RESTful APIs
• Working knowledge of CI/CD pipelines and related tools like Azure DevOps, Jenkins, or GitHub Actions
• Strong grasp of software development best practices including Agile methodologies, unit testing, and version control (Git)
• Strong analytical and problem-solving abilities paired with keen attention to detail
• Strong communication and teamwork abilities within collaborative environments

Nice to have

• Comprehension of AI/ML fundamentals including model training, data preprocessing, and prompt engineering
• Knowledge of the constraints and best practices surrounding AI adoption and deployment
• Experience applying AI technologies to real-world project scenarios