Senior Software Engineer (C#/.NET, Microsoft Azure IoT) - (B2B Contract)

Mesh Systems

Poland Remote contract

Posted: December 17, 2025

Required Skills

Job Description

About Mesh Systems

Mesh Systems are the Connected Product People. As a trusted Microsoft Partner, we help clients build, scale, and unlock value from their digital products. We specialize in creating scalable, cloud-based systems to process massive data volumes for global clients.

We are currently on an ambitious path to merge IoT with cutting-edge Artificial Intelligence, opening doors to future-proof projects. We're looking for an experienced Software Engineer to work with our engineering teams and help us shape the future of connected technology.

Compensation and Contract Model

Model: B2B Contract (100% Remote)

Availability: Collaboration within the Central European Timezone (CET).

Hourly Rate (USD): $40 - $50 USD / hour

Support: We provide support with formalities for Polish contractors working with a U.S. company.

Requirements:
What You Will Do

As a Senior Software Engineer, you will help in designing and implementing advanced cloud systems for IoT:

• Design & Architect: Design, create, and maintain scalable, distributed back-end systems for high-volume data processing.
• Implement Solutions: Write high-quality C#/.NET code for services running on Microsoft Azure.
• Integrate Systems: Connect cloud solutions with IoT devices and customer systems.
• Collaborate & Influence: Work in a small, autonomous engineering team, directly influencing the technical direction of our solutions.

What You'll Bring

We are seeking an engineer with senior proficiency and architectural understanding in the following:

• Fluency in C#/.NET: Deep knowledge of the language, framework, optimization, and modern design patterns.
• Azure Expertise: Practical experience with key services, including:
• Azure Container Apps (or similar container tech)
• IoT Hub & Event Hub
• Azure Service Bus
• Azure SQL & CosmosDb
• Key Vault

• Architecture: Proven experience building performant APIs and distributed, high-throughput systems.

• Data Flow: Ability to design robust workflows for IoT data ingestion and device messaging at scale.
• English Proficiency: Strong communication skills for seamless collaboration with U.S. partners and clients.

Bonus Points

• Experience with Azure Data Explorer or other NoSQL/Data Analytics solutions.
• Familiarity with IaC (Bicep/Terraform) and CI/CD (Azure Pipelines/GitHub Actions).
• Experience with other major cloud providers (AWS, GCP).

Benefits:
What Makes Working at Mesh Systems Unique?

• Autonomy & Impact: Work in small, agile teams where your engineering decisions have a real impact. We value pragmatic solutions and customer-focused thinking.
• Cutting-Edge Technology: Get direct access to Microsoft Azure technologies in Private Preview thanks to our close partnership.
• Culture: Join a team of passionate professionals and share knowledge about the most innovative solutions on the market.
• Future Focus (IoT + AI): Be part of our transformation, integrating IoT solutions with AI/Machine Learning at the intersection of the most advanced technologies.
• Professional Growth: We offer a dedicated training budget and full support for Microsoft certifications.

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