July 1, 2026

Lead .NET Engineer

Senior • Remote

38 - 41 USD

Krakow, Poland

(#5373)

Working hours: 14:00-22:00 CET

As a Lead Software Engineer, you will own all aspects of the software development lifecycle including design, development, testing, deployment and maintenance of product features in the Client's software products. You enjoy fast-paced entrepreneurial environments where you can solve difficult problems using current technologies and tools. You collaborate well with other team members when brainstorming, designing, and implementing new solutions. You will also help the team succeed by thinking about ways to improve processes, suggesting ways to make the team more effective, and mentoring and modeling engineering best practices.

Responsibilities:

  • Design, develop, and maintain high-performance backend systems and APIs using C# and .NET technologies, hosted in azure and various compliance level data-centers

  • Leverage Azure services like Azure App Services, Azure Kubernetes Service (AKS), Azure Blob Storage, and SQL/No-SQL Databases to build scalable, secure, and reliable cloud-native solutions

  • Build and maintain microservices-based architectures using C#, ASP.NET, and others

  • Design and implement RESTful or gRPC APIs, ensure seamless integration with other systems and products

  • Optimize architecture and solution for scalability and availability with cost and maintenance in mind

  • Identify and address performance bottlenecks and scalability challenges proactively

  • Align across teams for designs, communicate and resolve roadblocks

  • Guide and mentor other engineers through design and code reviews

Requirements:

  • 8+ years of software engineering experience in high scale distributed systems

  • 8+ years of experience building resilient and highly available web services

  • Extensive experience developing backend services and APIs in C#/.NET

  • Experience with Azure services including App Services, AKS, Blob Storage, SQL/NoSQL Databases

  • Experience with microservices architecture and distributed systems

  • Hands-on experience with the Temporal .NET SDK or other workflow orchestration/tools (e.g., Durable Functions, Step Functions, Apache Airflow)

  • Strong understanding of designing and building scalable, secure, and reliable cloud-native applications

  • Experience with designing and implementing RESTful or gRPC APIs

  • Knowledge of data storage best practices, including security, availability, and compliance

  • Experience documenting architectural standards and decisions

  • Solid experience in full stack development

  • Availability to fully cover PST working hours from Monday to Friday is a mandatory requirement for this role.

  • B.S., M.S., or PhD in Computer Science or equivalent experience

Preferred Qualifications

  • Familiarity with integrating orchestration tools into enterprise software environments

  • Experience with performance optimization, cost management, and designing for high availability

  • Excellent communication and collaboration skills

  • Prior experience mentoring engineers and conducting design/code reviews

  • Background in supporting analytics and business intelligence integrations

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