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.
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 (ASP.NET 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
Required qualifications
✅ 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.
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