Job Description :

We're hiring: Senior .NET Developer (Backend) – Payment Technologies
Mainly remote | Team meetings in Łódź twice a month | B2B

Join the payment technology team at one of the largest banks in Poland and work on systems used by millions of customers every day: account-to-account transfers, payment cards and BLIK. These are high-volume, 24/7 systems where your work has a direct impact on millions of transactions.

Work model
Mainly remote work
The team meets in the Łódź office twice a month

What you'll do
Design and develop backend services in C# / .NET 8
Build and maintain REST APIs (https://jobeax.com/link/GrYTXLZMpxEMJknV Web API)
Work with MS SQL databases (Entity Framework, query optimization, SSIS)
Integrate systems using Kafka and IBM MQ
Write unit, automated and end-to-end tests
Collaborate with business stakeholders and external vendors
Take care of code quality and contribute to CI/CD processes

Profile / Requirements :

✅ What we expect
5+ years of experience building backend solutions in C# with MS SQL
Strong knowledge of .NET 8, Entity Framework and Web API
Hands-on experience with Docker and Kubernetes
Experience with Visual Studio, Git and Postman / Insomnia
Ability to write unit, automated and e2e tests
Ease in navigating complex architecture and multiple services
Independence, strong organization and a goal-oriented mindset
Strong communication skills and curiosity in working with business and external vendors
English at B1/ B2 level
Polish at B2 level or higher
Your own sole proprietorship (JDG) – B2B cooperation

➕ Nice to have
Kafka, IBM MQ
KeyDB / Redis
SSIS
Azure DevOps, Jenkins, TeamCity
SonarQube
Jira, Confluence, Bitbucket

Interested?
Apply with your CV in English. We will contact selected candidates promptly to discuss the details, the recruitment process and formalities.

#hiring #dotnet #csharp #backend #fintech #payments #banking #b2b #remote #lodz

About us :

ALGOTEQUE is an IT consultancy firm that helps startups, mid-sized and large corporations to create and deliver innovative technologies.
Our team has a successful track record in designing, developing, implementing, and integrating software solutions (AI, ML, BI, Web, Automation) for Telecom, Energy, Bank, Insurance, Pharma, Automotive, Industry, e-commerce. We deliver our services both in fixed-price and time-and-materials models, helping our customers achieve their business and IT strategies.

Senior .NET Developer

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