C# Developer - Firmware & Hardware Interfaces (f/m/x)

Expected, C#, .NET, Git, GitHub, GitLab

Optional, SAFE

About the project, We are looking for an experienced C# Developer with a strong background in low-level development and hardware integration to join Sii and contribute to an innovative project delivered for our client — an international company operating in the AI-driven investment technology domain. You’ll work in a fully remote, startup-like environment, building solutions that combine software engineering with machine-level interaction and firmware communication. This is a great opportunity to grow within distributed teams and modern engineering practices, including CI/CD and Agile delivery models., , At Sii, we support continuous development and offer access to diverse projects aligned with your expertise., , If you like getting close to the hardware, enjoy solving complex integration challenges, and want to see how your code interacts with real-world systems — this project is for you. Apply now and build solutions where software meets machines. Not a 100% match? Let’s talk anyway — we’ll match you with the right opportunity.

Your responsibilities, Develop and maintain C# applications interacting with hardware components and low-level systems, Design and implement interfaces for communication with machine control layers and embedded components, Integrate software solutions with firmware and ensure reliable data exchange between layers, Collaborate with cross-functional, distributed teams in an Agile environment using CI/CD pipelines, Participate in code reviews, testing, and continuous improvement of system performance and reliability

Minimum 5 years of experience as a C# Developer or in a similar role, Hands-on experience with low-level or machine-oriented development and hardware interaction, Strong knowledge of firmware interfacing and control layer communication, Practical experience with Agile methodologies and CI/CD processes (GitHub/GitLab), English proficiency at min. B2 level (comfortable working in an international environment)

Optional, Experience working in a SAFe environment

What we offer, Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas, Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market, We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022, Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more, Comfortable workplace – class A offices or remote work, Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application, PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers, Investment in your growth – meetups, webinars, training platform and technology blog – you choose, Fantastic atmosphere created by all Sii Power People

Recruitment stages, Send your CV, Talk to us about your expectations, Learn more about our projects and choose the best, Start your adventure with Sii!

Sii Sp. z o.o., Sii is the leading technology consulting, digital transformation, engineering, and business services vendor in Poland. We already employ more than 7 300 professionals and implement projects in a variety of industries for clients from many countries around the world. The Great Place to Work title, won 10 times in a row, proves that at Sii, we create a friendly work environment., , Sii ensures that all employment-related decisions are made solely on the basis of qualifications and competencies. We are committed to equal treatment of all individuals, regardless of any protected characteristics, and promoting a diverse and inclusive work environment.

This is how we work,