MARGO

Senior .NET Developer with Fintech EXP!

Reposted 3 Months Ago

Be an Early Applicant

Hiring Remotely in Warsaw, Warszawa, Mazowieckie, POL

In-Office or Remote

Senior level

Information Technology • Consulting

The Role

Design, develop, and maintain large-scale backend applications for a major financial institution. Provide architectural guidance, implement robust engineering practices, and support critical fintech operations within a secure enterprise environment.

Summary Generated by Built In

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.

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.

Skills Required

Senior-level software engineering experience
.NET development experience
Backend application development experience
Experience in financial services / fintech
System architecture and design experience
Strong engineering practices (testing, CI/CD, code quality)

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The Company

HQ: Paris

358 Employees

Year Founded: 2005

What We Do

More than a simple IT consulting group, MARGO is an alchemy of talents with constantly enriched expertise, always encouraged to be dynamic and to flourish. For more than 17 years, we have been carrying out missions of the highest technical complexity, enabling the digital acceleration of our clients, while ensuring a perpetual intellectual and collective stimulation for all our talents. At MARGO it's Consultant First. By joining MARGO, your talent today will remain relevant tomorrow. We bring you into the group not only for what you are today but for the potential you wish to develop. At MARGO, you will be able to build your own path to excellence within our teams and our missions. Tailor-made to serve your ambition and to match your talent. Today, Margo has over 400 employees in 8 entities: ► MARGO Trading Systems: our full stack development offer in market finance ► MARGO Capital Markets: our business offer in market finance ► MARGO Analytics: our expertise in data science and data engineering ► A CAPELLA Consulting: our business offer dedicated to insurance ► CODE BUSTERS: our community of developers ► DELIVERED by MARGO: our 100% remote full stack development entity ► MARGO UK: expertise in complex coding and application support on the English market. ► MARGO Poland: expertise in complex coding in retail Banking on the Polish market