Senior .NET Lead — Flexible Hours, Global Projects

Kruko; Łódź; On-site; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Flexible contract

Flexible hours

Equipment provided

Long-term project

Job summary

Kruko is seeking a Senior .NET Developer / Team Leader to code and guide a growing team on enterprise projects. You will design RESTful services, optimize performance, and collaborate with international clients and frontend teams to shape technical direction.

The role combines hands-on development with leadership responsibilities, mentoring colleagues and driving best practices across projects.

Qualifications

• 7+ years of experience in .NET / .NET Core.
• Strong knowledge of C#, web app architecture and design patterns.
• Proficient in SQL, Entity Framework Core, and LINQ.
• Experience in team-based software development (SCRUM/Kanban).
• Ability to conduct code reviews and resolve technical issues.
• Excellent communication, independence, and ownership.
• English proficiency at B2/C1 (working with international clients).
• Experience as a leader/tech lead and knowledge of microservice architectures.

Responsibilities

• Develop and enhance applications using .NET / .NET Core (C#).
• Design and implement REST APIs.
• Work with SQL databases and EF Core.
• Participate in architecture design and performance optimization.
• Mentor team members and conduct code reviews.
• Plan tasks, estimations, and backlog prioritization.
• Maintain high quality standards and best practices.
• Collaborate with PM, frontend team, and clients to set standards.

Skills

.NET

C#

REST APIs

SQL

Entity Framework Core

LINQ

SCRUM

Kanban

Code Reviews

Leadership

English (B2/C1)

Microservices

Tools

Azure

AWS

CI/CD

Docker

React

Job description

Kruko is seeking a Senior .NET Developer / Team Leader to code and guide a growing team on enterprise projects. You will design RESTful services, optimize performance, and collaborate with international clients and frontend teams to shape technical direction.

The role combines hands-on development with leadership responsibilities, mentoring colleagues and driving best practices across projects.