Lead Full-Stack Engineer: C#/.NET & React - Hybrid

StoneX Group; Kraków; Hybrid; PLN 120,000 - 150,000; Full time

Job summary

A leading market connection firm in Kraków is seeking a Lead Full Stack Engineer to manage a small team while driving front-end and back-end development. The ideal candidate will have proven leadership experience alongside expertise in .NET and React, with a strong focus on Agile methodologies and cloud services. This is a hybrid role offering an exciting opportunity to influence both people and products.

Benefits

Private parking for employees

Hybrid work model

Career development opportunities

Qualifications

• Proven experience as a Senior or Lead Full Stack Engineer, with demonstrated success leading small teams.
• Strong proficiency in C#/.NET for backend development, including RESTful APIs.
• Hands‑on expertise with React and modern frontend practices.

Responsibilities

• Lead and manage a cross‑functional scrum team of ~5 engineers.
• Contribute production‑ready code while ensuring high standards.
• Act as a technical mentor and drive delivery predictability.

Skills

C#/.NET

React

Azure cloud services

Agile methodologies

CI/CD

Communication

Education

Bachelor’s degree in Engineering or relevant experience

Tools

Docker

Kubernetes

MongoDB

Visual Studio

Job description

A leading market connection firm in Kraków is seeking a Lead Full Stack Engineer to manage a small team while driving front-end and back-end development. The ideal candidate will have proven leadership experience alongside expertise in .NET and React, with a strong focus on Agile methodologies and cloud services. This is a hybrid role offering an exciting opportunity to influence both people and products.