Senior .NET Developer

Posted 7 Days Ago
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Warsaw, Warszawa, Mazowieckie, POL
In-Office
Senior level
Information Technology • Software
The Role
Develop and maintain business-critical .NET applications using MSSQL. Analyze requirements, prepare technical documentation, deploy across environments, troubleshoot and support production/test systems, and collaborate with business and technical teams to deliver stable, well-documented solutions.
Summary Generated by Built In

Why Choose TD SYNNEX:

As a Fortune 500 global corporation, operating in over 100 countries, TD SYNNEX values its diverse workforce of 22,000 employees. As the biggest IT distributor in the world, our mission is to provide top-notch cybersecurity solutions, empowering businesses and individuals to navigate the digital world safely and efficiently.

About the role:

We are looking for a Senior .NET Developer with strong analytical skills and experience in Microsoft technologies. You will work on business-critical applications, contributing both to new feature development and ongoing maintenance to ensure system stability.

 

Core technologies

  • C#, .NET Framework 4.8

  • Web Forms, ASP.NET (Custom Controls)

  • MSSQL, Entity Framework 6, LINQ, LINQ to SQL

  • GIT

 

What we expect

  • Strong analytical skills – ability to interpret and process existing code and data, gather business/technical input, and propose optimal solutions.

  • Ability to document and communicate solutions clearly and effectively.

  • Good English communication skills – able to discuss business logic, finance-related aspects, and technical details.

 

Nice to have

  • Knowledge of MS SQL Server (backup, restore, user permissions).

  • Knowledge of Windows Server (IIS, Windows services, access management).

  • Understanding of networking and security (data sources, firewall rules).

  • Experience with DevOps practices (TFS builds, pipelines, releases).

 

Responsibilities

  • Develop and maintain .NET applications using MSSQL.

  • Analyze requirements and prepare technical documentation.

  • Deploy new versions of applications across environments (Dev, Int, Prod).

  • Support production and test environments by analyzing and replicating issues, and proposing fixes.

  • Collaborate with business and technical teams across different functions.

What We Offer:

We provide competitive compensation with regular annual salary reviews.

Full remote in Poland or Hybrid (1 day at the office per week) in Warsaw.

We value continuous learning and provide a clear progression plan.

We provide comprehensive benefits including health insurance, paid leave, retirement plans, and more.

#LI-LT1
#LI-REMOTE
#LI-HYBRID

At TD SYNNEX, our values guide everything we do: Together, We Own It, We Dare to Go, We Grow and Win, and above all, We Do the Right Thing. These principles shape how we work with each other, our partners, and our communities as we drive innovation and create lasting impact.

What’s In It For You?

  • Elective Benefits: Our programs are tailored to your country to best accommodate your lifestyle.
  • Grow Your Career: Accelerate your path to success (and keep up with the future) with formal programs on leadership and professional development, and many more on-demand courses.
  • Elevate Your Personal Well-Being: Boost your financial, physical, and mental well-being through seminars, events, and our global Life Empowerment Assistance Program.
  • Diversity, Equity & Inclusion: It’s not just a phrase to us; valuing every voice is how we succeed. Join us in celebrating our global diversity through inclusive education, meaningful peer-to-peer conversations, and equitable growth and development opportunities.
  • Make the Most of our Global Organization: Network with other new co-workers within your first 30 days through our onboarding program.
  • Connect with Your Community: Participate in internal, peer-led inclusive communities and activities, including business resource groups, local volunteering events, and more environmental and social initiatives.

Don’t meet every single requirement? Apply anyway.

At TD SYNNEX, we’re proud to be recognized as a great place to work and a leader in the promotion and practice of diversity, equity and inclusion. If you’re excited about working for our company and believe you’re a good fit for this role, we encourage you to apply. You may be exactly the person we’re looking for!

Skills Required

  • Senior-level .NET development experience
  • Proficient in C#
  • .NET Framework 4.8 experience
  • ASP.NET Web Forms and custom controls
  • MSSQL / Microsoft SQL Server experience
  • Entity Framework 6
  • LINQ and LINQ to SQL
  • Version control with GIT
  • Strong analytical skills and ability to interpret existing code/data
  • Ability to document and communicate technical solutions clearly
  • Good English communication skills
  • MS SQL Server administration (backup, restore, permissions)
  • Windows Server experience (IIS, Windows services, access management)
  • Understanding of networking and security (firewalls, data sources)
  • Experience with DevOps practices and TFS builds/pipelines/releases

TD SYNNEX Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about TD SYNNEX and has not been reviewed or approved by TD SYNNEX.

  • Healthcare Strength Medical coverage spans multiple plan options (Anthem nationwide and Kaiser in select states) plus dental and vision, with preventive care at 100% and care navigation via Quantum Health. HSA‑eligible plans receive company contributions that enhance value.
  • Leave & Time Off Breadth Flexible or “unlimited” PTO is offered in many U.S. roles, providing broad time‑off access subject to manager approval. This structure is often cited as supporting work–life balance.
  • Retirement Support The 401(k) program includes auto‑enrollment and a company match of 50% on the first 6% after six months, with a clear vesting schedule. Administration through Fidelity and published plan details add clarity to usage.

TD SYNNEX Insights

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The Company
HQ: Clearwater, FL
22,000 Employees

What We Do

We’re TD SYNNEX (NYSE: SNX), a leading distributor and solutions aggregator for the IT ecosystem. We’re 22,000 of the IT industry’s best and brightest, who share an unwavering passion for bringing compelling technology products, services and solutions to the world. We’re an innovative partner that helps our customers maximize the value of IT investments, demonstrate business outcomes and unlock growth opportunities. At our core, we’re a company that cares. We care about our partners, our co-workers, our investors and the world around us. And we’re committed to being a diverse, inclusive employer of choice and a good corporate citizen.

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