Senior .NET Developer with Fintech EXP!
At MARGO · Warsaw
Salary: PLN 120–135 an hour
- Engineering
- Contract
- Senior
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Where you can work from
Open to Poland
“Warsaw”
From the location.
“This position is based out of our modern office space in Łódź, Poland, and offers an excellent work-life balance through a highly flexible hybrid work model requiring only 2 days per month in the office.”
From the job description.
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- Posted
- 15 June 2026
- First seen by us
- 3 November 2026
- Last checked
- 17 hours ago
Job description
From MARGO’s job post, as they wrote it.
Are you a seasoned software engineer looking to drive impactful backend solutions within a secure, large-scale enterprise environment? A leading international financial institution is seeking a Senior .NET Developer to join a highly specialized engineering team. In this role, you will play a pivotal part in designing, developing, and maintaining critical applications that support sophisticated financial operations. This is an exceptional opportunity for a senior professional who thrives on technical autonomy, values robust engineering practices, and is looking for a stable yet modern environment where their architectural input truly matters.
Read the full description
Technical Profile & Responsibilities
In this role, your core focus will center on backend ecosystem development (.NET/C# + MSSQL/T-SQL), ensuring high performance, security, and scalability of the banking systems.
Key Responsibilities & Requirements:
Advanced Software Engineering: Apply deep knowledge of advanced .NET programming, system design methodologies, and user requirements analysis to deliver clean, maintainable code.
Testing & Automation: Drive quality through rigorous unit testing and test automation methodologies to uphold strict financial software standards.
Professional Experience: A minimum of 4 years of hands-on experience delivering IT projects using C#, .NET, WCF, SQL, SQL Server Integration Services (SSIS), HTML, MVC.NET, and ASP.NET.
Tools & Environment: Proficiency with MSSQL, Visual Studio, Git, JIRA, MSBuild, TeamCity, and PowerShell.
Language Proficiency: Strong command of English, at least sufficient to seamlessly understand and work with complex technical documentation.
Nice-to-Have Qualifications:
Foundational knowledge of frontend technologies and practical experience with Blazor.
Hands-on experience or familiarity with containerization and orchestration via Kubernetes (K8s).
Professional certifications such as MCTS: .NET Framework 4.0, ASP.NET Applications.
Readiness to validate technical expertise through competency tests during the recruitment process.
Join the Team
This position is based out of our modern office space in Łódź, Poland, and offers an excellent work-life balance through a highly flexible hybrid work model requiring only 2 days per month in the office.
The targeted start date for this vacancy is 15 June 2026.
If you are a senior technical expert looking to elevate your career within an institution that values data discretion, engineering excellence, and structural stability, we want to hear from you. Take the next step in your professional journey—apply today by submitting your English CV.
Senior .NET Developer with Fintech EXP!MARGO
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