Fullstack Developer
Offer summary

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

The project focuses on maintenance and development of complex legacy full‑stack applications. The technology stack centers on .NET, WinForms, SQL, Git and Visual Studio, with optional DB2, NServiceBus, Entity Framework and Azure DevOps/CI/CD. Responsibilities include requirements analysis, participation in all product lifecycle phases, designing and implementing solutions, debugging and third‑line support, code reviews and collaboration with server and network teams. Required 5+ years .NET experience, front‑ and back‑end skills and fluent English.

Fullstack Developer

Company: SD Worx

from: 2 October 2026
to: 1 November 2026
salary not specifiedcontract of employment (full-time)
Offer parameters
level:mid
working mode:hybrid
location:Katowice, Silesian
Katowice, Silesian

Requirements

Expected technologies

.NET
SQL

Our requirements

  • 5+ years of .NET development experience within complex software environments
  • Practical expertise in WinForms application development
  • Strong SQL skills and database querying knowledge
  • Proficiency with Git and modern version control practices
  • Ability to work across both front-end and back-end technologies
  • Comfortable using Visual Studio as a primary development environment
  • Familiarity with AI tools and their application in software development
  • Degree in Information Technology or equivalent hands-on experience and expertise
  • Fluent English communication skills, both written and spoken

Optional

  • Knowledge of DB2 databases
  • Familiarity with NServiceBus messaging architecture
  • Experience working with Entity Framework
  • Understanding of Azure DevOps, CI/CD pipelines, and release processes
  • Exposure to ASMX web services
  • Experience collaborating in Agile/Scrum development teams
  • Salary range information will be shared with candidates during the initial interaction with the Talent Acquisition team, either by phone or email.
  • SD Worx values diversity and inclusion in the workplace. We welcome applications from all qualified candidates regardless of origin, nationality, gender, gender identity, sexual orientation, age, disability, religion, ethnic or social background, or stage of life.
  • All hiring decisions are made based on skills, experience and role‑related qualifications.

Your responsibilities

  • Cooperating closely with the team to understand requirements for legacy applications
  • Contributing throughout all phases of the product lifecycle, from ideation and development to maintenance
  • Devising solutions that are both functionally effective and technically robust
  • Troubleshooting, debugging, fixing, and implementing solutions
  • Participating in code reviews and knowledge-sharing activities within the team
  • Providing third-line support to end users when required
  • Working independently and proactively identifying solutions
  • Handling periods of intensive workload effectively and efficiently
  • Collaborating with server and network support departments
Company

What we offer

  • Stable employment conditions: permanent employment contract (after a 3-month probation period)
  • Flexible working hours and remote work opportunities
  • Private medical care (LuxMed)
  • Cafeteria system / Sports card
  • Lunch card (Edenred)
  • Financial allowance for remote work
  • Loans for employees
  • Workation: possibility to work from any SD Worx location (4 weeks per year, EU only)
  • Life insurance
  • Holiday allowance
  • Free language courses (during your working hours)
  • Annual bonus
  • Integration events
  • Free parking spaces for employees
  • Referral program
  • PPK (Employee Capital Plans): 3.5% employer contribution
  • Learning opportunities: through an individual development plan and professional training
  • Career growth: whether you want to become more of an expert in your field or expand your knowledge horizontally, there’s always room to grow within SD Worx!

Benefits

  • sharing the costs of sports activities
  • private medical care
  • sharing the costs of foreign language classes
  • life insurance
  • flexible working time
  • integration events
  • preferential loans
  • parking space for employees
  • meal passes
  • employee referral program
  • Workation
  • PPK (Employee Capital Plans)
  • Holiday allowance
  • Annual bonus
  • Financial allowance for remote work

SD Worx

At SD Worx Poland, we are focused on building capability and flexibility to meet the growth of the business whilst increasing the profitability across the organisation. We support SD Worx on most of the business areas such as HR, Finance, Marketing, Software Development, Testing, Implementation and Service Delivery. There are numerous opportunities at SD Worx Poland for people with the right blend of skills, experience and character! Are you ready to join us?
Fullstack Developer
I apply to:
SD Worx
Katowice, Silesian
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