Senior .NET Full-Stack Developer – Hybrid & Global Projects

Jacobs; Warszawa; Hybrid; PLN 180,000 - 300,000; Full time

Benefits offered by this job

Hybrid work model

Lux Med medical care

Life insurance

Multisport

Car/bike park sharing

Languages courses

Job summary

Jacobs is seeking a Senior Full Stack .NET Developer to design, develop, and deliver high-quality software across multiple applications. You will own tasks, manage priorities, and collaborate with Product Owners, Architects, and Scrum teams to enhance code quality and drive automation.

You will work in a hybrid model with required presence at Kraków or Warsaw offices at least two days per week, contributing to DevOps, CI/CD, and architectural governance while mentoring others and shaping

Qualifications

• 5+ years of experience designing and developing C# / .NET solutions.
• Experience building API-driven applications for multiple clients (web, desktop, mobile).
• Proven experience with Blazor, ASP.NET MVC, Razor.
• Microsoft Azure (Functions, App Services, Azure SQL, DevOps, CI/CD).
• Strong SQL, data modeling, optimization, and query tuning.
• Git and modern branching strategies; code reviews and debugging.
• Knowledge of Clean Architecture, CQRS, Mediator, Repository patterns.
• Agile teamwork and strong communication skills.

Responsibilities

• Independently manage priorities and deliver work across multiple applications and initiatives.
• Analyze, understand, and enhance existing codebases, including unfamiliar solutions.
• Support other developers through technical guidance, knowledge sharing, and code reviews.
• Define shared tech stack and development best practices with the team.
• Advise on solution design, technical debt assessment, and process improvements.
• Ensure high code quality through reviews, standards alignment, and CI/CD improvements.
• Translate business requirements into technical solutions and API designs.
• Contribute to replatforming and refactoring of existing systems.
• Work end-to-end on new applications (backend + frontend) within the .NET stack.
• Support sprint planning, estimation, and task breakdown for development teams.
• Contribute to DevOps processes and testing/QA organization.
• Provide guidance, resolve blockers, and mentor other developers.

Skills

C# / .NET

API architectures

Blazor

ASP.NET MVC

Razor

Azure

SQL / data modeling

Git & branching

Clean Architecture

Agile

Communication skills

CI/CD

Azure DevOps

Python

Node.js

Tools

Git

CI/CD pipelines

Azure DevOps

Python

Node.js

Job description

Jacobs is seeking a Senior Full Stack .NET Developer to design, develop, and deliver high-quality software across multiple applications. You will own tasks, manage priorities, and collaborate with Product Owners, Architects, and Scrum teams to enhance code quality and drive automation.

You will work in a hybrid model with required presence at Kraków or Warsaw offices at least two days per week, contributing to DevOps, CI/CD, and architectural governance while mentoring others and shaping