Tech Holding

Global tech consulting, cloud, and data

Senior Software Engineer - Contract

Full-Stack EngineeringConfirmed live in the last 24 hours

ContractRemote in MexicoNo salary listedRemote

About the Job

Requirements

Strong hands-on experience with C# and .NET application development.
Strong experience developing applications with Angular.
Solid experience troubleshooting SQL Server, including queries, data access, and performance issues.
Experience designing, developing, and integrating REST APIs.
Proficiency with TypeScript and Node.js.
Experience implementing automated tests and maintaining reliable software.
Ability to navigate, troubleshoot, and safely modify complex production systems with limited documentation.
Experience building adapters, integrations, or replacement components that allow legacy functionality to be modernized incrementally.
Strong problem-solving skills and the ability to work independently in existing codebases.

Responsibilities

Develop, maintain, and enhance applications using C#/.NET and Angular.
Troubleshoot SQL Server queries, data access issues, and production performance problems.
Build and integrate REST APIs and system-to-system integrations.
Develop adapters and incremental replacement capabilities to modernize existing systems.
Work across TypeScript and Node.js codebases to support integrations and application functionality.
Implement automated tests to improve code quality, reliability, and maintainability.
Investigate and resolve issues in production systems with incomplete or outdated documentation.
Deliver incremental improvements while protecting existing functionality and minimizing operational risk.
Collaborate with engineering teams to understand existing systems, identify technical risks, and implement practical solutions.

Desired Qualifications

Experience modernizing legacy applications or replacing legacy functionality incrementally.
Experience with complex system integrations and data migration.
Familiarity with strategies for reducing risk when deploying changes to established production systems.

About 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 ideal 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 Angular
Troubleshoot SQL Server queries, data access issues, and production performance problems
Build and integrate REST APIs and system-to-system integrations
Develop adapters and incremental replacement capabilities to modernize existing systems
Work across TypeScript and Node.js codebases to support integrations and application functionality
Implement automated tests to improve code quality, reliability, and maintainability
Investigate and resolve issues in production systems with incomplete or outdated documentation
Deliver incremental improvements while protecting existing functionality and minimizing operational risk
Collaborate with engineering teams to understand existing systems, identify technical risks, and implement practical solutions

Requirements:

Strong hands-on experience with C# and .NET application development
Strong experience developing applications with Angular
Solid experience troubleshooting SQL Server, including queries, data access, and performance issues
Experience designing, developing, and integrating REST APIs
Proficiency with TypeScript and Node.js
Experience implementing automated tests and maintaining reliable software
Ability to navigate, troubleshoot, and safely modify complex production systems with limited documentation
Experience building adapters, integrations, or replacement components that allow legacy functionality to be modernized incrementally
Strong problem-solving skills and the ability to work independently in existing codebases

Nice to have:

Experience modernizing legacy applications or replacing legacy functionality incrementally
Experience with complex system integrations and data migration
Familiarity with strategies for reducing risk when deploying changes to established production systems

Employment Type:

Contract

#LI-Remote

Tech 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

About the Company

Tech Holding

Global tech consulting, cloud, and data

Tech Holding provides technology consulting and managed IT services for startups and large enterprises worldwide. Its offerings span cloud services (AWS Advanced Consulting Partner with Google Cloud capabilities), data engineering and analytics, machine learning, custom product engineering, and IT service management through 24x7 operations and MSP-style support. It also helps with staff augmentation and seed-stage startup incubation, offering mentorship and development leadership. The company runs end-to-end projects from cloud migration and infrastructure optimization to data warehousing (Snowflake), BI, and AI model deployment, using web and mobile app development with modern tech stacks. Aimed at digital transformation, Tech Holding combines advisory services, hands-on engineering, and investment support to help clients design, build, and operate technology solutions globally while expanding its portfolio through incubated ventures.

Company size: 51-200
Company stage: Not listed
Total funding: Not listed
Headquarters: Los Angeles, CA
Founded: 2016

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