Senior .NET Developer with Industrial Communication Protocols (f/m/x)

Sii Poland; Katowice; On-site; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Great Place to Work

Profit sharing

Centre of internal trainings

Many experts you can learn from

Open and accessible management team

Medical care

Regular integration events and trips

Job summary

Sii Poland is seeking a Senior .NET Developer to join our agile in-house team. You will deliver long-term C#/.NET backend solutions for industrial systems, focusing on collaboration, CI/CD practices, and integration with industrial protocols.

Remote role based in Poland. You will work with Azure DevOps and Git in a fast-paced environment, delivering robust applications and contributing to system integration and high-quality code across projects.

Qualifications

• 5+ years in C#/.NET backend development.
• Experience with OPC UA, Modbus, IO-Link.
• Proficiency with Azure DevOps and Git.
• Strong SQL and relational database knowledge.
• Excellent communication and teamwork.
• Advanced English language skills.

Responsibilities

• Develop C#/.NET backend solutions for industrial systems.
• Support system integration with industrial protocols.
• Maintain and enhance existing applications.
• Collaborate in an agile team using Azure DevOps and Git.
• Implement CI/CD practices to optimize workflows.
• Ensure high code quality and performance.
• Participate in code reviews and team meetings.

Skills

C#/.NET

Industrial protocols

Agile methodologies

SQL

English

Team communication

Tools

Azure DevOps

Git

Job description

We are looking for a skilled Senior .NET Developer to join our agile in-house development team. You will be responsible for delivering long-term C#/.NET backend solutions for industrial systems, focusing on collaboration, CI/CD practices, and integration with communication protocols. This is a remote position based in Poland, where you will work closely with your team to create impactful solutions. If you are passionate about developing robust applications and enhancing system integration, this opportunity may be the right fit for you.

Your tasks

• Developing C#/.NET backend solutions for industrial systems
• Supporting system integration, including industrial protocols
• Maintaining and enhancing existing applications
• Collaborating within an agile team using Azure DevOps and Git
• Implementing CI/CD practices to optimize development workflows
• Ensuring high code quality and performance standards
• Participating in code reviews and team meetings to foster knowledge sharing

Requirements

• Minimum 5 years of experience in C#/.NET backend development
• Familiarity with industrial protocols such as OPC UA, Modbus, and IO-Link
• Strong expertise in Azure DevOps and Git
• Proficient in relational databases and SQL
• Experience working in agile methodologies
• Excellent communication and teamwork skills
• Advanced level of English

Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws.

Benefits For You

• Great Place to Work
• Solid financial situation
• Contracts with the biggest brands
• Centre of internal trainings
• Many experts you can learn from
• Open and accessible management team
• Profit sharing
• Passion Sponsorship program
• Regular integration events and trips
• Comfortable and well-equipped offices
• MySii app
• Medical care