Senior .NET Developer – Banking and Financial Solutions
Offer summary

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

The project focuses on online banking solutions development with emphasis on security and high performance. Key technologies include .NET 8, PostgreSQL, MS SQL, Docker, and Kubernetes. Responsibilities cover designing and developing backend features, optimizing data access, building containerized applications, Agile collaboration, and maintenance of payment systems. Experience in distributed teams and advanced mentoring are essential.

you can start ASAP

Senior .NET Developer – Banking and Financial Solutions

Company: ITDS Polska Sp. z o.o.

from: 22 May 2026
to: 21 June 2026
16 800 - 21 840net (+ VAT)/ mth.B2B contract (full-time)
13 500 - 15 500gross/ mth.contract of employment
Salary details
basic salary
Offer parameters
level:senior
working mode:hybrid
location:Warszawa, Masovian
Warszawa, Masovian

Requirements

Expected technologies

.NET
PostgreSQL
Microsoft SQL Server
Docker
Kubernetes

Our requirements

  • At least 4 years of experience in IT system development.
  • Solid hands-on experience with .NET (especially .NET 8).
  • Strong knowledge of PostgreSQL and MS SQL.
  • Practical understanding of Agile software development.
  • Excellent communication and collaboration skills in distributed teams.
  • Ability to work independently and manage your responsibilities.
  • Experience developing new features and maintaining existing ones.
  • Passion for software development and continuous learning.
  • Experience with Docker and Kubernetes.
  • Good command of Polish.

Optional

  • Certifications in relevant technologies.
  • Experience with financial or payment systems.

Your responsibilities

  • Design and develop new features in .NET 8 to enhance banking solutions.
  • Implement and optimize SQL-based data access for performance and security.
  • Build and maintain containerized applications using Docker and Kubernetes.
  • Collaborate with distributed teams within an Agile framework.
  • Participate in the development of secure payment solutions.
  • Share knowledge and mentor less experienced team members.
  • Ensure code quality through reviews and testing.
  • Maintain existing functionalities and address production issues.
  • Manage your time effectively while working remotely.

About the project

As a Senior .NET Developer, you will be working for our client, a leader in online banking, supporting the development and maintenance of secure, high-performance financial solutions. You’ll join a dynamic team dedicated to building cutting-edge banking functionalities, ensuring top-tier reliability and innovation. Operating within a distributed Agile environment, you’ll play a pivotal role in implementing complex backend logic while collaborating seamlessly across teams. This is your chance to contribute to transformative financial technology and accelerate your career growth.
Ignite digital innovation — shape the future of online banking!
Warszawa-based opportunity with hybrid work model (2 days in the office/month, up to 4 remote days/week).
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

This is how we work on a project

  • DevOps

#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

Senior .NET Developer – Banking and Financial Solutions
13.5k–15.5k zł / mth. (CoE), 16.8k–21.8k zł / mth. (B2B)
I apply to:
ITDS Polska Sp. z o.o.
Warszawa, Masovian
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