Principal Engineer Ukraine

As a Principal Engineer
, your primary responsibility is to define and guide the long-term technical vision and architectural strategy for migrating an enterprise .NET-based product from an on-premise infrastructure to the AWS Cloud.

The platform is an enterprise-grade .NET-based system currently operating in multiple customer environments. The modernization roadmap involves replatforming to the cloud using a lift-and-shift model — introducing cloud automation, secure connectivity, and telemetry while preserving existing functionality. Future phases will focus on progressive decoupling and transition toward cloud-native components.

Key features include:

• Large-scale .NET platform transitioning from on-premise to cloud
• Mix of legacy and modern components: .NET Framework, .NET Core, SQL Server, and Windows-based services
• Infrastructure automation and monitoring through Terraform, CI/CD pipelines, and telemetry
• Secure reverse proxying, role-based access, and identity federation
• API integrations with external enterprise systems
• Modernization roadmap introducing containerization, observability, and refactoring opportunities

Team structure and Workflow

The engineering organization operates across India, the UK, and LATAM, following Agile Scrum principles. Teams are cross-functional and include Backend Engineers, SDETs, Product Owners, AWS Cloud Engineers and Engineering Managers. Work is coordinated via Azure Dev Ops and Git Hub, with daily collaboration supported by Slack, Microsoft Teams, and SharePoint.

As a Principal Engineer, you will:

• Own the end-to-end technical strategy and architectural roadmap for the cloud migration and target state
• Participate in the Architecture Review Board (ARB) and define engineering standards to ensure multi-team alignment and consistency
• Support developers and Dev Ops engineers by clarifying technical requirements, patterns, and best practices
• Collaborate with Delivery and Product stakeholders to ensure technical feasibility, risks, and dependencies are well understood
• Help break down complex initiatives into clear technical work streams
• Review and arbitrate high-risk/high-impact architectural decisions for core platform components (e.g., data layers, service decoupling)
• Facilitate cross-team communication, ensuring the right technical decisions are made at the right time
• Act as an escalation point for complex technical issues, guiding teams toward effective solutions
• Contribute to architectural documentation, decision-making, and modernization planning

• Lead technical direction for the entire platform domain, defining the key performance indicators (KPIs) for reliability, latency, and scalability.
• Drive the technical execution of the long-term vision, ensuring the tactical 'lift-and-shift' phase (IaaS) builds a solid foundation for the future cloud-native state (PaaS/SaaS)
• Drive engineering quality through design reviews, code reviews, and infrastructure validation
• Ensure CI/CD pipelines, testing strategies, and environment configurations follow best practices
• Collaborate closely with Delivery and Product teams to evaluate feasibility, define technical scope, and anticipate implementation challenges
• Identify technical risks early and guide teams toward effective mitigation strategies
• Promote documentation of architecture, operational procedures, and technical decisions
• Support smooth delivery by ensuring teams have clear technical guidance, patterns, and standards

• Architect and define the target cloud-native architecture, overseeing the phased decomposition of the monolithic application into independent services
• Define and govern technical patterns for cross-cutting concerns (e.g., inter-service communication, identity federation, distributed tracing, and data consistency)
• Guide teams through design decisions involving legacy .NET Framework components, Windows-based services, and modern .NET
• Ensure cloud environments are secure, scalable, repeatable, and aligned with Infrastructure-as-Code practices
• Review and validate Terraform modules, CI/CD pipelines, configuration changes, and infrastructure updates
• Support gradual…