Senior Software Engineer | Contract | RemoteMexicoAbout us:Working at Tech Holding isn't just a job, it's an opportunity to be a part of something bigger.
We are a full-service consulting firm that was founded on the premise of delivering predictable outcomes and high-quality solutions to our clients.
Our founders and team members have industry experience and have held senior positions in a wide variety of companies – from emerging startups to large Fortune 50 firms – and we have taken our combined experiences and developed a unique approach that is supported by the principles of deep expertise, integrity, transparency, and dependability.The Role:We are looking for a Senior Software Engineer with strong C#/.
NET and Angular experience to build, integrate, and modernize software systems.
This role requires hands-on experience with SQL Server, REST APIs, TypeScript, and Node.Js, along with the ability to troubleshoot production issues and deliver reliable solutions in complex environments with limited documentation.
The adecuado candidate can do more than maintain existing code.
They can build adapters, develop integration capabilities, and incrementally replace legacy functionality while minimizing disruption to existing systems.Key Responsibilities:Develop, maintain, and enhance applications using C#/.
NET and AngularTroubleshoot SQL Server queries, data access issues, and production performance problemsBuild and integrate REST APIs and system-to-system integrationsDevelop adapters and incremental replacement capabilities to modernize existing systemsWork across TypeScript and Node.Js codebases to support integrations and application functionalityImplement automated tests to improve code quality, reliability,



and maintainabilityInvestigate and resolve issues in production systems with incomplete or outdated documentationDeliver incremental improvements while protecting existing functionality and minimizing operational riskCollaborate with engineering teams to understand existing systems, identify technical risks, and implement practical solutionsRequirements:Strong hands-on experience with C# and .
NET application developmentStrong experience developing applications with AngularSolid experience troubleshooting SQL Server, including queries, data access, and performance issuesExperience designing, developing, and integrating REST APIsProficiency with TypeScript and Node.JsExperience implementing automated tests and maintaining reliable softwareAbility to navigate, troubleshoot, and safely modify complex production systems with limited documentationExperience building adapters, integrations, or replacement components that allow legacy functionality to be modernized incrementallyStrong problem-solving skills and the ability to work independently in existing codebasesNice to have:Experience modernizing legacy applications or replacing legacy functionality incrementallyExperience with complex system integrations and data migrationFamiliarity with strategies for reducing risk when deploying changes to established production systemsEmployment Type:ContractTech Holding is proud to be an Equal Opportunity Employer and is committed to fostering a diverse and inclusive workplace.
We welcome applicants from all backgrounds and experiences, and we consider qualified applicants without regard to race, color, religion, gender, sexual orientation, gender identity, national origin, disability, veteran status, or any other legally protected characteristic.
If you require accommodation in the application process, please contact our HR#J-*****-Ljbffr

📌 Senior Software Engineer | Contract | Remote (Jalisco)
🏢 Tech Holding
📍 Jalisco