Senior .Net Engineer

Posted 12 Hours Ago
Be an Early Applicant
Cracow, Kraków, Małopolskie, POL
Hybrid
Senior level
Information Technology • Software • Consulting
The Role
Design, build, and scale cloud-native backend systems for a SaaS platform using C# and .NET. Develop RESTful APIs, microservices, and event-driven architectures; deploy solutions on AWS; and improve system performance, security, reliability, and scalability. Collaborate with frontend, product, and design teams, participate in architecture and code reviews, implement automated testing, reduce technical debt, and contribute to agile delivery and continuous improvement.
Summary Generated by Built In

We are seeking an experienced Senior Backend Software Engineer to design, build, and scale
cloud-native backend systems for our SaaS platform.
You will play a key role in shaping system architecture, improving performance, and delivering
robust services that support high-traffic, customer-facing applications.
This role combines hands-on engineering with architectural influence.
You will collaborate closely with frontend engineers, product managers, and distributed teams to
deliver reliable and scalable solutions in a fast-paced, agile environment.
Key Responsibilities
• Design, develop, and maintain scalable backend services using C# and .NET (6+)
• Build and optimise RESTful APIs to support modern frontend applications
• Architect and implement microservices-based systems with a focus on modularity and
resilience
• Develop and deploy solutions leveraging AWS cloud services
• Ensure systems are highly available, secure, and performant
• Collaborate with frontend engineers to ensure smooth API integration and performance
• Partner with product and design teams to translate business requirements into technical
solutions
• Participate in architecture discussions, code reviews, and agile ceremonies
• Write clean, maintainable, and well-tested code following industry best practices
• Implement automated testing strategies (unit, integration, end-to-end)
• Identify and reduce technical debt, improving long-term system sustainability
• Monitor and improve system performance, reliability, and scalability
• Stay current with emerging technologies and contribute to continuous improvement
initiatives
Required Qualifications
• 5+ years of experience in backend software engineering (web or SaaS environments)
• Strong proficiency in C#, .NET, ASP.NET Core
• Experience building and maintaining web-based applications and APIs
• Solid understanding of distributed systems and cloud-native architecture
• Hands-on experience with AWS
• Experience designing and implementing event-driven systems
• Strong knowledge of relational databases (e.g., SQL Server) and ORM tools (e.g., Entity
Framework)
Preferred Qualifications
• Experience with AWS services such as Lambda, API Gateway, DynamoDB, and
Elasticsearch
• Familiarity with Infrastructure as Code (e.g., Terraform)
• Experience with CI/CD pipelines (e.g., GitHub Actions, TeamCity)
• Knowledge of containerisation and orchestration (Docker, Kubernetes)
• Exposure to serverless architectures
• Experience supporting backend systems for modern frontend frameworks (e.g.,
React)
• Familiarity with observability and monitoring tools
Soft Skills
• Strong communication skills and ability to collaborate across distributed teams
• Proactive mindset with a strong sense of ownership and accountability
• Ability to prioritise effectively and deliver results under time constraints
• Analytical problem-solving skills with attention to detail
• Customer-focused approach to building reliable and user-centric systems
What We Offer
• Opportunity to work on large-scale, globally distributed systems
• Collaborative and international engineering environment
• Competitive salary and benefits package
• Flexible hybrid working model
• Career growth opportunities and support for continuous learning
Interested? Send your resume! :)

Skills Required

  • 5+ years of experience in backend software engineering, preferably in web or SaaS environments
  • Strong proficiency in C#, .NET, and ASP.NET Core
  • Experience building and maintaining web-based applications and APIs
  • Understanding of distributed systems and cloud-native architecture
  • Hands-on experience with AWS
  • Experience designing and implementing event-driven systems
  • Strong knowledge of relational databases such as SQL Server and ORM tools such as Entity Framework
  • Experience with AWS Lambda, API Gateway, DynamoDB, or Elasticsearch
  • Familiarity with Infrastructure as Code, such as Terraform
  • Experience with CI/CD pipelines, such as GitHub Actions or TeamCity
  • Knowledge of Docker and Kubernetes
  • Exposure to serverless architectures
  • Experience supporting backend systems for frontend frameworks such as React
  • Familiarity with observability and monitoring tools
Am I A Good Fit?
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The Company
15 Employees
Year Founded: 2023

What We Do

EasySoftGroup is a software development and IT services company serving startups and growing businesses in Europe and the US. It supports projects across the product lifecycle, providing custom software development, system integration, technical consulting and project audits, DevOps, post-launch support, optimization, and technology recruitment for its own projects and client teams. Its mission is to deliver practical, scalable solutions that address real business needs.

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