Senior.NET Engineer

About the Position

Senior.NET Engineer

It’s your career – make it matter

At Avenga, we believe that human creativity empowers technology that matters. Operating globally, our 6000+ specialists provide a full spectrum of services, including business and tech advisory, enterprise solutions, CX, UX, and UI design, managed services, product development, and software development.

We are looking for a skilled Senior.NET Engineer to join the development team supporting mission-critical applications for mortgage and consumer-credit services. You will work closely with cross-functional teams to build, maintain, and enhance back-end services, APIs, and scheduled processes that support legal-tech workflows.

Our client is an established American leader with decades of experience designing comprehensive, cost-effective legal and outsourcing solutions for the residential mortgage and consumer credit industry.

Responsibilities

• Design, implement, test, and maintain .NET applications;
• Build and maintain data layers with Entity Framework and direct SQL Server code;
• Write and optimize complex SQL; tune DB performance;
• Integrate third-party APIs and custom client services securely and reliably;
• Apply dependency injection for modular, testable code;
• Deploy and troubleshoot apps on IIS and on-prem environments;
• Use logging and telemetry (App Insights or similar) to monitor production;
• Improve legacy code for readability, testability, and maintainability;
• Use AI coding assistants responsibly to boost productivity and validate outputs.

Requirements

• 5+ years of .NET experience, with proficiency in C# across.NET Framework 4.8 and .NET (9+) development;
• Practical experience with Entity Framework;
• Strong SQL Server skills: complex queries, joins, CTEs, stored procedures, and query tuning;
• Hands-on experience with ASP.NET MVC and ASP.NET Web API; experience building console/scheduled applications in production;
• Comfortable using AI coding tools (such as Claude Code or similar AI code assistants) as part of daily development;
• Familiar with dependency injection using Unity and Microsoft DI patterns;
• Experience deploying and managing applications on IIS and on-prem infrastructure;
• Comfortable working in and improving legacy codebases;
• English level - Upper-intermediate or higher;
• Ability to work US Eastern Time (EST) hours.

Nice to Have

• Experience integrating third-party APIs and custom client integrations;
• Background in legal-tech, service-of-process, mortgage, or adjacent domains;
• Experience with document and PDF processing (generation, merging, manipulation);
• Hands-on experience with Azure services such as DevOps, Application Insights, and Key Vault.

We Offer

At Avenga, everyone matters. We provide equal opportunities in recruitment, career development, and leadership, regardless of race, ethnicity, gender identity, sexual orientation, disability, age, religion, or any other characteristic. We are committed to fostering a work environment where our diverse community of employees, candidates, and business partners actively shapes our growth. By bringing together people from different backgrounds and experiences, we build a workplace where everyone feels free to be themselves while honoring the boundaries of others.

About the Company

Avenga is a global technology company with over 6000 specialists providing a full spectrum of services, including business and tech advisory, enterprise solutions, CX, UX, and UI design, managed services, product development, and software development.

Application Process

APPLICATION

Send us your application, we are ready to hear your story and explore how we can grow together.

REVIEW

Our team carefully reviews every application with curiosity and care. If your profile isn’t the right fit today, we will keep it in mind for future opportunities that match your skills and ambitions.

TALENT ACQUISITION INTERVIEW

You will meet our Talent team to talk about your goals and learn more about who we are, what we offer, and how we support our people.

TECHNICAL INTERVIEW

Our tech interview is all about diving deeper into your expertise and understanding your strengths, how you solve problems, and how you think – no trick questions, just a meaningful conversation.

CUSTOMER INTERVIEW

For some roles, especially when our clients are closely involved, you might also have a conversation with them – it’s a chance for everyone to align and get to know each other better.

JOB OFFER

If we both feel it’s the right match, we will send you an offer to join us. And even if it’s not the time just yet, you’ll always hear back from us.

WELCOME!

Your new team is excited to meet you, support you, and build something great together. Let’s make your first day the start of a journey that shapes a career that matters.

Locations

• Buenos Aires, AR
• Córdoba, AR

Remote Status

Fully Remote

Technology

.NET

Seniority

Senior-level