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.NET Developer – Modernization & AI Integration
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Offer summary

(Summary generated by AI based on the full job description)

The project focuses on modernizing financial systems by migrating from .NET Framework to a modern .NET architecture and integrating AI tools like Claude and Codex. Responsibilities include backend development and maintenance using C# and .NET, creating automated tests, designing scalable solutions, and deploying applications in a Kubernetes environment. Required skills include MS SQL, Git, JIRA, TeamCity and proficiency in Polish. Benefits include medical care, multisport, training opportunities, and flexible working hours.

you can start ASAP

.NET Developer – Modernization & AI Integration

Company: ITDS Polska Sp. z o.o.

from: 2 June 2026
to: 2 July 2026
16 800 - 20 160 złnet (+ VAT)/ mth.B2B contract (full-time)
13 000 - 14 000 złgross/ mth.contract of employment
Offer parameters
level:mid
working mode:hybrid
location:Łódź, Łódź
Łódź, Łódź

Requirements

Expected technologies

C#
.NET
Microsoft SQL Server
Git
Jira
TeamCity

Optional technologies

Docker
Kubernetes

Operating system

Windows

Our requirements

  • At least 3 years of experience in software development using C# and .NET
  • Practical experience with .NET Framework and modernizing legacy code
  • Hands-on experience with LLM tools such as Claude and Codex
  • Strong background in automated testing
  • Proven ability to design and implement enterprise applications
  • Solid knowledge of MS SQL
  • Experience with Git, JIRA, and TeamCity
  • Ability to work independently while effectively collaborating within a team
  • Proficient Polish language skills for technical documentation and communication

Optional

  • Knowledge of Docker and Kubernetes

Your responsibilities

  • Develop and maintain backend services using .NET and C#
  • Rebuild legacy applications from .NET Framework to modern .NET architecture
  • Create and maintain automated tests to ensure application quality
  • Collaborate with business stakeholders to analyze and refine requirements
  • Design scalable and maintainable software solutions
  • Integrate applications with databases and external services
  • Utilize LLM-based tools such as Claude and Codex to support development activities
  • Participate in code reviews and ensure adherence to development standards
  • Deploy and support applications in Kubernetes environments
  • Work closely with cross-functional teams within an Agile delivery model

About the project

Join a strategic modernization initiative focused on migrating legacy systems to cutting-edge technologies, integrating AI-driven tools, and developing scalable, secure solutions in a complex enterprise environment. This is your chance to be part of shaping the future of financial technology and advancing your career in a dynamic setting.
As a Mid-Level .NET Developer, you will be working for our client, a leading financial institution committed to redefining digital banking experiences.
Unleash the Future of Digital Banking — Drive Innovation with Modern .NET Solutions!
Lodz-based opportunity with hybrid work model (2 days in the office/month).
Only candidates with an existing legal right to work in the European Union will be considered for this role.

This is how we organize our work

This is how we work

at the client's siteagilescrum

#GETREADY to meet with us!

ITDS Business Consultants is involved in many various, innovative and professional IT projects for international companies in the financial industry in Europe. We offer an environment for professional, ambitious, and driven people.
We would like to meet you. If you are interested please apply and attach your CV in English or Polish, including a statement that you agree to our processing and storing of your personal data.

ITDS’s Whistleblower Procedure

📌 You can report violations in accordance with ITDS’s Whistleblower Procedure available here: https://itds.pl/wp-content/uploads/2025/03/INFORMATION-ON-PROCEDURE-FOR-REPORTING-BREACHES-AND-PROTECTION-OF-WHISTLEBLOWERS-AT-ITDS-POLSKA.pdf
Company

What we offer

  • Stable and long-term cooperation with very good conditions
  • Enhance your skills and develop your expertise in the financial industry
  • Work on the most strategic projects available in the market
  • Define your career roadmap and develop yourself in the best and fastest possible way by delivering strategic projects for different clients of ITDS over several years
  • Participate in Social Events, training, and work in an international environment
  • Access to attractive Medical Package
  • Access to Multisport Program
  • Access to Pluralsight
  • Flexible hours

Benefits

  • sharing the costs of sports activities
  • private medical care
  • flexible working time
  • fruits
  • integration events
  • corporate gym
  • saving & investment scheme
  • no dress code
  • coffee / tea
  • drinks
  • christmas gifts
  • birthday celebration
  • sharing the costs of a streaming platform subscription
  • access to +100 projects
  • access to Pluralsight

Recruitment stages

  • 1.
    online interview
  • 2.
    online interview

ITDS Polska Sp. z o.o.

ITDS supports financial service providers to take the next steps.
We identify what’s possible, every day. Opportunities in the areas of technology, organization, and digitization.
We see where banks, insurers, payment companies, or fintech can go and how they can get there.
That’s why we want to stimulate you to ramp up your ambition. Forget what you perceive as restraints and step towards the new reality.
ITDS in Poland - Pure player in new Technologies & Financial Industry
+300 IT implementation professionals
+20 clients in the Banking, Insurance, Payment & Fintech Industry
ITDS excels in digital strategy delivery and implementation of best-of-breed lending solutions. ITDS has delivered successful strategic projects throughout Europe since 1998. We combine the experience we’ve accumulated with in-depth knowledge of technologies, business processes, and EU legislation to unlock new business opportunities.

This is how we work

.NET Developer – Modernization & AI Integration
13k–14k zł / mth. (CoE), 16.8k–20.2k zł / mth. (B2B)
I apply to:
ITDS Polska Sp. z o.o.
Łódź, Łódź
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