(Contract) Senior Software Engineer (Desktop/C#)

Type: Contract, per-project.
Location: Remote - within LATAM time zones (GMT-3 to GMT-5)
Availability: Contractor (40 hours per week)

Core Responsibilities

• Hands-on engineering (30–40%)
• Build small tools, sample apps, packaging automation, and targeted patches to Microsoft SDKs/CI workflows that accelerate partner onboarding.
• Technical guidance for elite partners
• Work directly with senior engineers at leading AI and ISV companies to unblock their Windows app builds, packaging, publishing, OAuth flows, desktop features, and performance.
• Windows application packaging and migration
• Package PWAs, support WebView2/desktop hybrid architectures, assist app migrations from Xbox to Windows, and help partners adopt MSIX/unpackaged patterns.
• Ecosystem content and best practices
• Ghost-write technical guides and internal artifacts for Microsoft teams based on lessons learned (docs, engineering playbooks, reference implementations).

  Required Experience

• Strong Windows engineering background (5+ years required; 8+ preferred)
• Proven experience shipping Windows applications (Win32, .NET, UWP, WebView2 hybrids), debugging with tools such as ProcMon, WinDbg, Fiddler, and strong C# skills with the ability to read C++.
• Full-stack proficiency with service integrations
• Experience building and consuming REST APIs, OAuth flows, and distributed app architectures that connect desktop clients to cloud services.
• Technical judgment with ambiguous requirements
• Able to decompose unclear problems, propose architectural tradeoffs (UWP vs Win32 vs hybrid/PWA), and work effectively with senior Microsoft engineers and PMs.
• Clear, confident communication with technical and business audiences
• Capable of explaining desktop technology choices in terms of engineering effort, risk, time-to-market, and business impact.
• Strong ownership and proactive execution
• Able to identify opportunities, drive solutions without waiting for instruction, and deliver incremental value quickly.

  Desired Skills

• Experience with MSIX, unpackaged apps, app installers, Xbox-to-Windows porting, PWA packaging, and Windows Store publishing workflows.
• Familiarity with performing targeted fixes to SDKs, CI pipelines (e.g., GitHub Actions), and internal tooling used for app publishing.
• Experience writing technical documentation or training materials.

Engagement Details

• Duration: 5-6month contract
• Location: Remote with meetings across U.S. time zones
• Deliverables: Engineering contributions, partner enablement, reusable artifacts, and internal documentation

(*) SOUTHWORKS only hires individuals from countries that are not blocked or sanctioned by the United States, including those identified on the United States Office of Foreign Asset Control (OFAC).