Middle .Net Developer

apartmentTrinetix placeWarszawa schedulePełny etat calendar_month 

We are looking for a skilled .Net Engineer to join our team!

Our business unit at Trinetix works with a leading Fortune 500 professional services company to deliver innovative software solutions that enhance workplace management, streamline business operations, strengthen security, and support data-driven decision-making.

Through a diverse portfolio of impactful projects, we apply modern technologies to solve complex challenges and drive efficiency across the organization. Join us to be part of a team that’s shaping enterprise transformation through technology.

Requirements
  • 3+ years with .NET (Framework 4.6+ & Core 2.1+) & C# 6 in enterprise environment
  • OOP - solid understanding of OO design principles and patterns
  • Web Development Backend - ASP.NET MVC, Web API. Solid understanding of Web App lifecycle in different hosting environments, security, error handling
  • MS SQL Server (DB design), PostgreSQL, Development (T-SQL) - 3+ years of enterprise experience
Nice-to-haves
  • Experience with Azure Cloud or AWS is a plus
  • Experience with MySQL is a plus
  • Experience in working within an agile software development team
Core Responsibilities
  • Develop new features
  • Modernize existing features
  • Analyze Requirements and clarify with BSA
  • Participate in groomings, estimation and planning sessions
  • Collaborate with other team members (incl. Front-end team, QA team, TDM, BSA, Architect, etc.)
  • Support of the existing functionality, refactoring, bug fixing
Expected qualifications
  • Build and deliver complex features with confidence
You take ownership of major parts of a project, building advanced features that meet both technical and business needs.
  • Make smart technical decisions and contribute to design discussions
You can design and implement solutions independently, and you help shape system architecture to support scalability and long-term goals.
  • Support and mentor junior developers

You share your experience with less-experienced teammates, offering guidance on code quality, design choices, and development best practices.

What we offer
  • Continuous learning and career growth opportunities
  • Professional training and English/Spanish language classes
  • Comprehensive medical insurance
  • Mental health support
  • Specialized benefits program with compensation for fitness activities, hobbies, pet care, and more
  • Flexible working hours
  • Inclusive and supportive culture

About Us

Established in 2011, Trinetix is a dynamic tech service provider supporting enterprise clients around the world.

Headquartered in Nashville, Tennessee, we have a global team of over 1,000 professionals and delivery centers across Europe, the United States, and Argentina. We partner with leading global brands, delivering innovative digital solutions across Fintech, Professional Services, Logistics, Healthcare, and Agriculture.

Our operations are driven by a strong business vision, a people-first culture, and a commitment to responsible growth. We actively give back to the community through various CSR activities and adhere to international principles for sustainable development and business ethics.

To learn more about how we collect, process, and store your personal data, please review our Privacy Notice: https://www.trinetix.com/corporate-policies/privacy-notice

Benefits

Who we are:

We are TRINETIX — a dynamic, rapidly growing technology organization with approximately 1000 representatives in Europe, the United States, and Argentina, who bring their passion, skill & innovation to ensure our organization provides products that meet the needs of our partners and clients.

We offer IT solutions to business enterprises of various sizes and industries using the latest cutting-edge technologies. We assist our clients and partners in improving work processes, making them more efficient while focusing on the essential objectives.

We serve and support various business entities, enterprises, and startups globally, to grow and stay competitive in the digital era. We achieve this essential goal by efficiently implementing tech innovation, substantial professional expertise, and a solution-driven strategy.

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