Role: Software Engineer - .NET & Platform Integrations

Type: Contract

Location: Guadalajara, MX - Hybrid

Responsibilities:

- Build & Deliver Integrations
- Build integration features, RESTful APIs, and shared libraries against defined contracts and
- patterns, contributing to the event-driven and asynchronous flows the team builds
- Contribute directly to integration logic in the existing product code, including the monolithic
- application, to help clear the current backlog
- Move between modern .NET services and older .NET Framework code, debug across service
- boundaries, and help diagnose failures in integration flows
- Follow established API standards for versioning, contracts, and deprecation
- Take a well-scoped design or task and drive it to a working, deployed result with guidance from
- senior engineers

Own Your Work
- Fully test your own work before it moves forward; write unit and integration tests andcontribute to acceptance and end-to-end coverage for what you build
- Own your work through every stage of the SDLC to Production, and fix Production issues thatarise from it
- Meet the team's quality and coverage bar before code goes to review
- If you build it, it is your responsibility to make sure it works correctly Use AI Across the SDLC
- Use modern AI coding harnesses daily, such as Claude Code, Codex, OpenCode, or Pi, with a working understanding of what an agent is: a model paired with a harness
- Apply these tools across the SDLC,



from writing and reviewing code to generating tests Work Within the Team
- Take day-to-day direction from the Platform Integrations manager, senior engineers, and architects, and build to the contracts, patterns, and review standards that support the team's architectural direction
- Participate in code review, both submitting your work and giving feedback on peers' integration
- code
- Flag integration risks, blockers, and design gaps early rather than working around them silently
- Document the work you deliver for long-term knowledge preservation
- Maintain a working-hours overlap with US Central Time sufficient for daily standups, code review, and real-time collaboration

Qualifications: Knowledge, Skills, and Abilities

- 3+ years of professional software engineering experience building production systems
- Proficiency in C# and the .NET ecosystem, including exposure to .NET Framework codebases
- Experience building or contributing to production APIs and integration features
- Experience working in large, established codebases
- Daily hands-on use of modern AI coding harnesses (Claude Code, Codex, OpenCode, Pi, or similar), with a working understanding of what an agent is (model plus harness)
- Experience writing unit and integration tests, including using AI to help build them
- Willingness to own your work through the SDLC to Production and fix issues that arise from it
- Ability to work against a defined design and well-scoped tasks with guidance from senior engineers.

📌 .NET & Platform Integrations (Guadalajara)
🏢 XChange Software
📍 Guadalajara