Senior Full-Stack .NET Developer

Your impact

As a Senior Full Stack .NET Developer, you will be responsible for designing, developing, and delivering high‑quality software solutions. You will support teams in applying best practices, ensuring code quality, contributing to architectural discussions, and driving process automation. You will collaborate closely with Product Owners, Architects, and Scrum teams.

Key Responsibilities

• Support the Software Engineering Manager and Solution Architect in defining the shared tech stack and development best practices

• Advise development teams on solution design, technical debt assessment, and continuous process improvement

• Ensure high code quality through code reviews, standards alignment, and CI/CD pipeline improvements

• Translate business requirements into technical solutions

• Support solution design activities: user stories, effort estimation, API design, and architectural decisions

• Contribute to replatforming and refactoring of existing systems

• Work end‑to‑end on new applications (backend + frontend) within the approved .NET stack

• Support sprint planning, estimation, and task breakdown for development teams

• Contribute to DevOps processes, automation of CI/CD, and organization of testing and UAT

• Provide technical guidance, resolve blockers, and mentor other developers

Here's what you'll need

• 5+ years of experience designing and developing C# / .NET solutions in complex environments

• Experience building applications based on API architectures for multiple clients (web, desktop, mobile, plugins)

• Practical Experience with Blazor, ASP.NET MVC, Razor

• Proven experience with Microsoft Azure (Functions, App Services, Azure SQL, DevOps, CI/CD)

• Solid expertise in SQL, data modeling, optimization, and query tuning

• Experience with code quality assurance, advanced debugging, and performance profiling

• Strong knowledge of Git and modern branching strategies

• Familiarity with Clean Architecture principles, separation of layers, and design patterns (CQRS, Mediator, Repository)

• Experience working in Agile teams and strong communication skills

 Nice to have:

• Python for automation tools and integrations

• Node.js

We offer:

• Rewarding employment: Full-time employment with a salary that matches your qualifications

• Hybrid work model: Enjoy the flexibility of working from home, with just several office days per month

• Comprehensive benefits: Including Lux Med medical care, psychological support, life insurance, My Benefit cafeteria system, Multisport card co-financing, and a car/bike park sharing system

• Co-financed holidays: Enjoy "Wczasy pod Gruszą" for a well-deserved break

• Global projects: Engage in exciting international projects

• Inclusive networks: Join our diverse employee networks like Women's Network, OneWorld, PRISM, Careers Network, Green Team, SpeakUp, Collectively, and more

• Continuous learning: Participate in our Graduate Development Program, Learners’ Community, and self-learning platforms

• Language courses: Enhance your skills with courses in English, German, and Polish  

We know that if we are inclusive, we’re more connected, and if we are diverse, we’re more creative. We accept people for who they are. Find out more about life at Jacobs. As a Disability Confident employer, we will interview all disabled applicants who meet the criteria for a vacancy. If you require further support or reasonable adjustments with regards to the recruitment process (for example, you require the application form in a different format), please contact the team recruitmentpoland@jacobs.com