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Full-Stack Developer (.NET)

The JM GroupAbout the company

  • Kraków

    Kraków, Lesser Poland
  • Offer expired 12 days ago
  • contract of employment, B2B contract
  • full-time
  • specialist (Mid / Regular)

Technologies we use



  • Web API 2

  • .NET Core

  • ASP.NET Core

  • JavaScript

  • TypeScript

  • React.js


  • Umbraco

Your responsibilities

Role Summary

We are exclusively working in partnership with a global organisation based in Krakow who are seeking Senior Full-stack Developers to join their team.

You will be working closely with Product Owners team in US and Development team in Krakow, designing and building together a rich browser app. You will be using your modern software design and development skills, together with product and domain knowledge, to produce designs for the web front end application. It is an exciting time as you will be an integral part of producing the next generation of applications and services.

Projects overview:

• Cost Basis Vendor Replacement replaces US in-house TLMS with vendor application. Tax processing is complex and subject to penalties for lack of timeliness and accuracy.

• Our Online portal - digital service, allowing access to account or portfolio 24 hours a day / 7 days a week and a new client portal, are one of most recognized tools for managing shares of shareowners and corporations on USA market.

Our requirements

  • Strong experience on relevant role and at least 2 years in a senior

  • Excellent knowledge about .Net Framework 4.7 and above

  • Excellent knowledge of Microsoft web technologies including ASP.Net MVC, Web API 2

  • Good knowledge about .NET Core and ASP.NET Core

  • Good knowledge of JavaScript/Typescript and working experience with modern JavaScript frameworks (preferred React)

  • Experience of developing in Visual Studio 2019

  • Practical knowledge and experience of developing REST APIs

  • Experience of multi-tier service based architectures.

  • Working knowledge of securing web applications and OWASP

  • Good working knowledge of Entity Framework/ Entity Framework Core, SQL Server

  • Understand performance and tuning of applications including within database

  • Exposure to WCF Web Services

  • Understanding of authentication and authorisation using SAML and ADFS

  • Practical knowledge and experience of unit testing

  • Clear understanding and experience of Continuous Integration and Continuous Delivery

  • Practical skills and knowledge of tools and patterns for Continuous Delivery including: Azure Devops, Git, Nuget, Powershell Scripting, IIS WebDeploy

  • Ability to manage and prioritize multiple development activities simultaneously


  • Experience with Umbraco or any other Enterprise CMS

  • Experience with web accessibility

  • Understanding of authentication and authorisation OpenID Connect / OAuth2

  • Finance sector experience

  • Experience in leading own project teams

What we offer

  • Part-remote working (1 day in the office every two weeks)

  • B2B or Permanent (UoP)

  • Full-time

  • 20/26 days of annual leave + 1 day for your birthday

  • Multi-sport card

  • discretionary annual bonus (performance-based)

  • Private Medical

  • Life Assurance

  • Benefits

  • sharing the costs of sports activities

  • private medical care

  • life insurance