Senior .NET Software Engineer

iTech Media; Poland; Hybrid; PLN 213,000 - 299,000; Full time

Job summary

A technology product company in Poland is seeking a Senior .NET Software Engineer to join their VeliSports product team. This role involves collaborating with cross-functional teams to develop sophisticated applications using ASP.NET and ensuring high performance and efficiency. The ideal candidate has proven experience in C# and .NET development, and a solid understanding of software development practices. Flexible working conditions are offered, along with opportunities for mentorship and career growth.

Benefits

Health insurance

20 days paid vacation

Remote, hybrid, or office work options

Mentorship and career support

Community events

Qualifications

• Proven experience in C# and .NET development.
• Experience with Memcached or other caching mechanisms.
• Familiarity with front-end technologies (HTML, CSS, JavaScript).
• Very good understanding of source version control flows (Git).
• Experience with GPM stack or alternatives.

Responsibilities

• Collaborate with cross-functional teams to design and develop web services.
• Debug, test and fix issues in the codebase.
• Create and maintain project documentation.
• Participate in launching projects into production.

Skills

C# and .NET development

Postgres or SQL Server

Debugging skills

Excellent communication skills

Familiarity with Docker

Understanding of software development best practices

Education

Bachelor's degree in Computer Science or Engineering

Tools

SQL Server

Docker

Job description

Overview

VeliTech is a product company, where everyone is passionate about technology and strives to stay ahead of the curve. Our team is fueled by a deep understanding of cutting-edge frameworks, technologies, and continuous learning. This combo brought us success, 35+ million users served with our iGaming products, breakthrough Tech Radar, and a team of 200+ bright minds who made this happen.

We invite a Senior .NET Software Engineer to join the VeliSports product team.

About VeliSports

VeliSports is where sport meets smart technology. As part of the VeliTech ecosystem, we’re developing a sportsbook platform that gives our clients full control over their offering, from real-time odds management to automated risk handling and in-depth player insights. Working at VeliSports means building a product that handles high traffic, complex data, and fast-changing markets. Our team is focused on making sports betting operations more efficient while giving players a smooth and engaging experience. If you enjoy solving real challenges and creating tools that make a difference, VeliSports is the place to be.

Responsibilities

• Collaborate with cross-functional teams to design, develop, extend, deploy and support web service (API) applications written in ASP.NET & ASP.NET Core
• Utilize SQL Server or Postgres for database design, development, and maintenance
• Implement and optimise Memcached for caching data and improving application performance
• Write clean, maintainable, and efficient code following best practices and the team’s internal standards
• Debug, test, and fix issues in the codebase
• Participate in launching projects into production in the early stage, ensuring seamless deployment and monitoring for any potential issues
• Collaborate with other developers, designers, and product owners to deliver high-quality software
• Create and maintain project documentation
• Periodically review the code base and suggest improvements
• Follow your direct manager’s and the PM’s instructions and attend teamwork meetings regularly
• Proficiency in self-management, ensuring efficient workflow and timely completion of projects

Skills and experience

• Bachelor's degree in Computer Science, Engineering, or a proven equivalent experience
• Proven experience in C# and .NET development
• Proficiency in Postgres, SQL Server or other RDBMS
• Experience with Memcached or other caching mechanisms
• Familiarity with Docker
• Experience with SignalR or any other socket server solutions
• Familiarity with front-end technologies (HTML, CSS, JavaScript)
• Familiarity with Command-Line interactive tools (bash/zsh/cmd/Power Shell)
• Solid understanding of software development best practices
• Very good understanding of source version control flows (Git)
• Excellent researching, problem-solving and debugging skills
• Excellent communication skills and teamwork abilities
• English language at least on the Professional Working Proficiency level
• Experience with GPM stack or alternatives
• Familiarity with AWS (EC2/ECS/S3/RDS/Route 53/Cloudwatch/ElastiCache/EC2 ALB/etc)
• Familiarity with CloudFlare
• Understanding of computer networking and knowledge of networking protocols

Nice to have

• Working experience in iGaming-related fields (especially sports book solution providers) will be a very big advantage
• Familiarity with other web frameworks and technologies (e.g., React, Angular)
• Understanding of microservice architecture
• Familiarity with Event Sourcing or Event queue systems
• Familiarity with protocol buffers

We offer

• Level up daily. Real mentorship, a clear career path, and support to lead your product.
• Battle-tested tech stack. Work with what we bet on: microservices, serverless, SRE strength.
• Health comes first. Insurance and 10 days' sick leave — because your health is a priority.
• Work your way. Remote, hybrid, office — find your rhythm.
• Time off that matters. 20 days paid vacation, public holidays — to recharge your way.
• Build your brand. Share your story, grow your voice — inside and out.
• Culture with a pulse. Team offsites, community events, and the energy of people who care.