Sr Software Engineering

OneSource; Ciudad de México; On-site; MXN 600,000 - 1,200,000; Full time

Job summary

OneSource is seeking an experienced Senior Software Engineer in Mexico City to design, develop, and maintain mission-critical eDiscovery software used by legal teams worldwide. This hands-on role requires ownership of features from concept to production, building scalable, reliable solutions while leveraging AI-powered development tools and maintaining high standards of code quality and testing.

You will mentor junior engineers, participate in design discussions, and contribute to a healthy,

Qualifications

• 5+ years of professional software development with .NET/C#.
• Strong PostgreSQL schema design and query performance optimization.
• Experience with automated testing and troubleshooting production systems.

Responsibilities

• Design, develop, and maintain software features using .NET/C# and PostgreSQL.
• Write automated tests to ensure quality, reliability, and performance.
• Troubleshoot production issues across the technology stack.
• Use AI development tools for code generation, review, testing, and debugging, validating outputs before deployment.
• Mentor junior engineers on best practices and responsible AI usage.
• Participate in technical design discussions and code reviews.
• Help build scalable systems and maintain a healthy codebase.

Skills

Communication

Mentoring

Code reviews

Testing focus

Troubleshooting

Distributed teamwork

Tools

.NET/C#

PostgreSQL

AI tooling

Testing frameworks

Profiling tools

Job description

We are looking for an experienced Senior Software Engineer to design, develop, and maintain mission-critical eDiscovery software used by legal teams worldwide.

In this hands-on role, you will own features from concept to production, build scalable and reliable software solutions, and leverage AI-powered development tools while maintaining high standards of code quality, testing, and accountability.

Key Responsibilities

About the Role

We are looking for an experienced Senior Software Engineer to design, develop, and maintain mission-critical eDiscovery software used by legal teams worldwide.

In this hands-on role, you will own features from concept to production, build scalable and reliable software solutions, and leverage AI-powered development tools while maintaining high standards of code quality, testing, and accountability.

Key Responsibilities

• Design, develop, and maintain software features using .NET/C# and PostgreSQL.
• Write automated tests to ensure code quality, reliability, and performance.
• Troubleshoot production issues and investigate problems across the technology stack.
• Use AI development tools for code generation, review, testing, and debugging, validating all outputs before deployment.
• Mentor junior engineers on software development best practices and responsible AI usage.
• Participate in technical design discussions and code reviews.
• Contribute to building scalable systems and maintaining a healthy, reliable codebase.

Requirements

• 5+ years of professional software development experience with .NET/C#.
• Strong PostgreSQL experience, including database schema design and query performance optimization.
• Experience building, maintaining, and supporting scalable software systems.
• Strong commitment to automated testing and code quality.
• Proven experience troubleshooting production systems and resolving live incidents.
• Daily experience with AI-powered development tools and the ability to critically review and validate generated code.
• Excellent written and verbal communication skills, with the ability to collaborate effectively across distributed teams and time zones.