Senior Full-Stack .NET Developer

Jacobs; Województwo małopolskie; Hybrid; PLN 50,000 - 80,000; Full time

Benefits offered by this job

Hybrid work model

Lux Med medical care

Psychological support

Life insurance

Multisport card co-financing

Continuous learning opportunities

Language courses

Job summary

Jacobs is seeking a Senior Full Stack .NET Developer in Poland to design and deliver high-quality software solutions. You will support teams by advising on best practices, ensuring code quality, and participating in architectural discussions. Candidates should have over 5 years of experience with C# / .NET, API architectures, and Microsoft Azure. The role offers a hybrid work model with robust benefits including comprehensive healthcare and language courses.

Qualifications

• 5+ years of experience designing and developing C# / .NET solutions.
• Experience building applications based on API architectures.
• Practical experience with Blazor and ASP.NET MVC.
• Proven experience with Microsoft Azure services.
• Solid expertise in SQL and data modeling.
• Experience with code quality assurance and debugging.
• Strong knowledge of Git and modern branching strategies.
• Familiarity with Clean Architecture principles.

Responsibilities

• Support defining the shared tech stack and best practices.
• Advise on solution design and technical debt assessment.
• Ensure high code quality through reviews and CI/CD.
• Translate business requirements into technical solutions.
• Work end-to-end on new applications within the .NET stack.
• Contribute to DevOps processes and automation.

Skills

C# / .NET development

API architectures

Blazor

ASP.NET MVC

Microsoft Azure

SQL

Git

Agile methodologies

Job description

Overview

At Jacobs, we're challenging today to reinvent tomorrow by solving the world's most critical problems for thriving cities, resilient environments, mission-critical outcomes, operational advancement, scientific discovery and cutting-edge manufacturing, turning abstract ideas into realities that transform the world for good.

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

Qualifications

• 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 [e-mail]

References: Your application experience is important to us, and we’re keen to adapt to make every interaction even better. 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 via Careers Support.