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Senior .NET Developer – Microservices
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Offer summary

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

The project involves developing advanced backend systems using .NET Core, C# with a focus on microservices and cloud integration. Responsibilities include implementing new functionalities on the platform, developing microservices and external partner integrations, and optimizing queries in SQL Server and Cosmos DB. Key tasks include requirements analysis, maintaining code quality, and working with messaging systems like Azure Service Bus, Event Hub, Kafka. The project is in the financial industry with benefits such as medical care and multisport access.

newyou can start ASAP

Senior .NET Developer – Microservices

Company: ITDS Polska Sp. z o.o.

from: 10 July 2026
to: 9 August 2026
18 900 - 25 200 złnet (+ VAT)/ mth.B2B contract (full-time)
salary not specifiedcontract of employment
Offer parameters
level:senior
working mode:hybrid
location:Warszawa, Masovian
Warszawa, Masovian

Requirements

Expected technologies

.NET
.NET Core
C#
Microsoft SQL Server
Azure Service Bus
Event Hub
Kafka
MQ

Optional technologies

Azure AI Search
Elasticsearch
Azure Cosmos DB
MongoDB
NoSQL
Swagger
OpenAPI

Our requirements

  • Minimum 5 years of experience as a Backend .NET Developer.
  • Strong knowledge of .NET Core / C#.
  • Experience with SQL Server, including query creation and optimization.
  • Familiarity with messaging systems, preferably Azure Service Bus or Event Hub, or alternative like Kafka or MQ.
  • Proficient communication skills in Polish and English at a business level.

Optional

  • Experience with Azure AI Search or Elasticsearch.
  • Knowledge of Azure Cosmos DB, MongoDB, or other NoSQL databases.
  • Experience with Azure cloud services (App Services, Functions, Storage, Application Insights, Log Analytics).
  • API documentation skills using Swagger / OpenAPI.
  • Backend development experience for mobile applications.

Your responsibilities

  • Design and implement new backend functionalities on the Goodie platform using .NET Core.
  • Develop and maintain microservices and external partner integrations.
  • Implement and enhance content search engines.
  • Work with SQL Server and Cosmos DB for data querying and optimization.
  • Participate in requirement analysis, backlog refinement, and sprint planning.
  • Ensure code quality through unit tests, code reviews, and adherence to best practices.

About the project

As a Senior .NET Developer – Microservices and Cloud Integration, you will be working for our client, a leader in innovative software solutions. You will contribute to the development of complex backend systems, focusing on microservices architecture and cloud-based integrations, supporting scalable and robust digital platforms. This role offers a path to impactful projects and career growth in a dynamic environment.
Empower the future of backend development by architecting innovative microservices and seamless cloud integrations!
Warszawa-based opportunity with a hybrid work model (1 day in-office per week, typically on Mondays). Fully remote work is also possible but prioritized second.
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 site

#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 – Microservices
18.9k–25.2k zł / mth. (B2B)
I apply to:
ITDS Polska Sp. z o.o.
Warszawa, Masovian
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