Principal Software Engineer for .NET/Azure projects

In the Global Tax Technology space, we are looking for a person with senior commercial experience in software projects. The ideal profile is an active full stack software developer with solid experience in an IT architect / IT Tech Lead role and some experience in the Team Lead role. The person will fulfil a key technical role in the Sightline platform environment with influence on strategic directions and managerial responsibility for a given area within Sightline. The responsibility scope will include technology (Tech Lead) and engineering team (Team Lead).

Scope of Work

• Lead the design (whole components and particular features), development, and deployment of new solutions
• Proposing improvements to technical standards and delivery processes, promoting good practices in cooperation with other Tech Leads in Global Tax Technology
• Facilitating collaboration with Product Owners/Managers on product roadmaps, in alignment with other Tech Leads in Global Tax Technology, overseeing solution implementation
• Lead and mentor other Software Developers and Quality Analysts, support code and test plan reviews
• Monitor solution compliance with Sightline platform technical standards/security requirements and facilitate timely issue resolution and facilitate other DevOps tasks
• Support incident and problem management: help the platform L3 Support in Production issue troubleshooting, and facilitate resolution
• Stay up to date on the latest trends and technologies in AI and full-stack development by keeping current with new AI frameworks, agent platforms, CLI toolkits, and best practices in the industry. Leverage and promote GenAI usage in daily work and educate others on new ways of working.

Required Experience & Skills

• 12+ years of experience in software projects within a global environment and a complex organization, including communicating directly to Business (end-users) or their representative and senior stakeholders
• 5+ years of experience as an IT architect / IT Tech Lead, applying best practices including Agile, DDD, microservices, CQRS, CLEAN, and SOLID
• Proficiency in RESTful Web app development using C#/.NET, Python, and front-end technologies such as React, Angular, or Vue.js
• Proficiency in the Microsoft Azure and M365 cloud platforms, as well as Azure stack: Functions, Service Bus or Event Hub, App Services, SQL/MongoDB
• Experience with AI enabled development tools and agents such as GitHub Copilot, Cursor, OpenAI Codex, Claude Code, Gemini CLI, Antigravity, etc.
• Experience using test-driven and spec-drive development practices with tools such as Playwright, MS Test, Fluent, NUnit, K6, SpecKit, BMAD, etc.
• Experience with DevOps technologies is a must
• B2+ in written and spoken English

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