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.NET Developer Location: Polanco, Mexico City Work Model: Hybrid – 4 days per week in the office Schedule: Monday to Friday English: Advanced – professional and technical communication required Position Overview We are looking for a Senior .NET Developer with strong experience in C# and the Microsoft .NET ecosystem to join a technology project with a global financial institution. The ideal candidate will have solid experience developing and maintaining web applications and services, troubleshooting complex technical issues, and working in Agile environments. Experience with application security, Content Security Policy (CSP), and secure coding practices is highly desirable. Required Skills & Experience Strong knowledge of Object-Oriented Programming (OOP) principles. Hands-on experience with C#, ASP.NET MVC, .NET Framework and/or .NET Core . Experience developing and maintaining Web Services, WCF Services, and REST APIs . Strong knowledge of T-SQL and relational databases . Experience with software testing and quality assurance practices . Understanding of DevOps, CI/CD, and deployment processes . Knowledge of secure coding principles and application security best practices . Experience working with Agile/Scrum methodologies . Ability to analyze, troubleshoot, and resolve complex application issues. Familiarity with Python and/or NoSQL databases is a plus. Preferred Qualifications Experience implementing, troubleshooting, or remediating Content Security Policy (CSP) issues. Knowledge of ASP.NET Web Forms . Experience with ETL processes and data integration . Exposure to cloud environments and modern application architectures. Experience working with applications in financial services or other highly regulated environments is a plus. Key Responsibilities Design, develop, test, and maintain .NET applications and services . Develop scalable, secure, and high-performance solutions using C#, ASP.NET MVC, .NET Core , and related technologies. Develop and maintain REST APIs, Web Services, and WCF Services . Troubleshoot and resolve application and production issues. Identify and address security vulnerabilities and CSP-related issues . Participate in code reviews and promote clean code and development best practices. Collaborate with cross-functional and technical teams in an Agile/Scrum environment . Support CI/CD pipelines, deployments, and DevOps initiatives. Contribute to application modernization and continuous improvement efforts. Ensure applications meet required performance, scalability, reliability, and security standards . Technical Environment Backend & Frameworks C# .NET Framework .NET Core ASP.NET MVC ASP.NET Web Forms APIs & Services REST APIs Web Services WCF Databases & Data SQL Server / T-SQL NoSQL ETL / Data Integration Security & DevOps Secure Coding Content Security Policy (CSP) CI/CD DevOps Methodologies Agile Scrum Important Considerations Advanced English is mandatory. Hybrid work model: 4 days per week onsite in Polanco, Mexico City. Candidates should be comfortable working in a technical and collaborative environment with international stakeholders.
Here's where they are and how to stand out in your next interview.
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Most developer ads you'll see are written in English: 18,397 of the 24,795. That doesn't tell you whether the job itself requires you to speak English or work in English daily, so read each posting carefully. Don't assume the language of the ad matches the language of the team.
The employers posting the most developer roles are Link Group (369 jobs), Upvanta (257), jobgether (226), and OfferZen (212). If you're applying to any of these, research their hiring patterns. They move fast and post often, which means they're either scaling hard or replacing people who didn't fit.
In your interview, expect this: 'Walk me through the last time you had to debug something that took you more than an hour. What was it, what did you try first, and what would you do differently?' Hiring managers ask this to see if you think systematically or just try random fixes. Have a real example ready with specifics.