Improving Mexico, is a TI services company focused on changing positively how IT professionals are perceived. We deliver solutions through IT consulting, software development, and agile training—while building a culture grounded in teamwork, excellence, and fun.

In this role, we will strengthen and evolve our existing .NET Framework 4.8 applications. You will work with legacy codebases, supporting reliability and maintainability while improving core functionality—backed by complex SQL development, stored procedure work, and stable on-prem IIS deployments.

Key Responsibilities We will have you maintain and enhance .NET Framework 4.8 applications, including complex SQL work and legacy code stewardship.

- Maintain and enhance .NET Framework 4.8 applications.
- Write complex SQL queries.
- Maintain legacy code.

We will also rely on you to independently troubleshoot and ensure reliable operation across the existing stack (ASP.NET MVC/Web API, console/scheduled tasks, and Windows Services), keeping deployments stable in IIS (web.config, app pools). Required We are looking for a senior .NET engineer (~5+ years) who can independently troubleshoot and maintain legacy systems, with deep hands-on experience across the .NET Framework 4.8 ecosystem.

- Senior .NET (~5+ yrs); troubleshoots and maintains legacy independently.
- Deep, hands-on C# on .NET Framework 4.8.
- Entity Framework 6 with SQL Server, plus T-SQL for complex queries and experience working with stored procedures (authors/tuning).




- ASP.NET MVC and Web API, including console/scheduled tasks and Windows Services on Framework.
- Experience deploying on IIS on-prem (web.config, app pools).
- Legacy comfort: no rewrite reflex—maintainability-minded.
- Strong communication and collaboration.

We value engineers who can work calmly in existing systems, clarify requirements with stakeholders, and collaborate effectively with the team to deliver incremental improvements.

Nice to have

- Third-party API integration and custom client integration.
- Legal-tech or service of process domain knowledge.
- Document/PDF processing experience.
- Claude Code experience and/or .NET 9+ exposure.

Awesome Benefits

- Major Medical Expense Insurance

- Life Insurance

- Dental and Vision Insurance

- Mental Health Support

- IMSS (Mexican Social Security)

- Seniority Bonus

- Savings Fund Program

- Career Development Plan

- Christmas Bonus (Aguinaldo)

- Vacation Bonus

- Corporate Retirement Plan

- Certifications and Training Programs

- Internal Events

- TotalPass Wellness Program

- Additional Paid Time Off

- Additional Protection and Discounts

- Auto and Motorcycle Insurance

- Pet Insurance

- Personal Belongings Insurance
- And much more!!!
- Please note that our offices are located in Guadalajara and Aguascalientes. Candidates from other cities are welcome to join us through our remote work model. ****

📌 .NET Developer (Ciudad de México)
🏢 Improving South America
📍 Ciudad de México