Principal Full-Stack Software Engineer

Location: Poland (remote)

Work Schedule: Full-time

Contract Type: pure B2B (JDG)

Our project is a strategic modernisation initiative for our client aimed at replacing a legacy SAP MII-based manufacturing performance analysis platform ahead of its end of support. The project focuses on building a scalable, cloud-native platform that enables efficient machine data ingestion, processing, and reporting across global manufacturing operations.

The solution will integrate with SAP S/4HANA, ServiceNow, and enterprise data platforms, providing unified operational visibility and supporting approximately 1,300 machines across multiple factories.

The delivery model will be based on cloud-native architecture and modular design and AI-first, spec-driven development practices.

Requirements:

Must-have:

• Strong hands-on experience with modern backend development using .NET (C#)
• Solid experience with frontend development using React or the ability to effectively collaborate with frontend teams working in this stack
• Strong experience designing enterprise APIs and integration contracts, including REST APIs, OpenAPI specifications, validation, versioning, and integration with external enterprise systems
• Experience with relational data modelling, SQL performance considerations, and reporting/read-model design for operational and analytical consumers
• Proven experience building and operating applications in Microsoft Azure, including:

Azure Container Apps (or equivalent container platforms)

Azure SQL Database

Azure networking (VNet, Private Endpoints)

• Practical experience with containerised environments (Docker) and cloud-native deployment models
• Strong understanding of cloud-native architecture principles, including:

Stateless services

Scalability and resiliency patterns

Secure service-to-service communication

• Experience working with CI/CD pipelines, preferably:

Azure DevOps Pipelines

Git-based workflows

• Experience implementing infrastructure as code, ideally using Bicep or similar tools
• Good understanding of application security practices, including:

Secure secret management (e.g., Azure Key Vault)

Identity and access management (Entra ID / OIDC)

• Experience with observability and monitoring, such as:

Logging, metrics, and tracing using Azure Monitor / Application Insights

• Strong experience in technical leadership, including:

Guiding engineering teams

Driving code quality and best practices

Participating in architecture discussions

Nice-to-have:

• Experience with event-driven and asynchronous architectures, including:

Azure Service Bus (queues/topics)

Azure Event Hubs

• Experience with DevSecOps tooling and practices, including:

SonarCloud (code quality)

Trivy or similar container security scanning tools

IaC validation tools

• Exposure to AI-assisted development tools (e.g., GitHub Copilot) and spec-driven development approaches
• Experience working in large-scale enterprise environments with:

Distributed teams

Multi-system integration landscapes

High availability and security constraints

Soft Skills:

• Strong ownership mindset and ability to drive delivery in a complex, multi-stakeholder environment
• Excellent communication skills with ability to operate in a client-facing role
• Structured thinking and ability to work within defined SDLC and governance models
• Proactive, solution-oriented approach with focus on long-term platform sustainability

Responsibilities:

• Lead design and development of a scalable, cloud-native platform
• Define and implement architecture-aligned solutions in collaboration with Solution Architects and client stakeholders
• Drive engineering best practices, including code quality, testing, CI/CD, and security
• Contribute to technical decision-making and architecture discussions (ADR definition and alignment)
• Mentor and guide engineers, supporting team growth and delivery excellence
• Ensure alignment with AI-first, spec-driven development approach and engineering workflows
• Collaborate closely with distributed teams, including DevOps, QA, Product Manager/Business Analyst, and client stakeholders
• Support integration development with enterprise systems (e.g., SAP, ServiceNow, Data Lake)
• Participate in end-to-end delivery, from discovery and design to implementation and release
• Ensure adherence to agreed SDLC processes and release workflows