Truelogic: Senior Developer (.NET)

About Truelogic

Truelogic is a premier provider of nearshore staff augmentation services, headquartered in New York. For over 20 years, we have delivered top-tier technology solutions to companies of all sizes, empowering their digital transformation journeys. Our team of 600+ highly skilled tech professionals based in Latin America collaborates with U.S. companies on impactful projects, driving digital disruption for both Fortune 500 clients and scaling startups.

Our Client

A leading B2B digital marketing agency.

Job Summary

The Senior Developer is a key individual contributor responsible for building, extending, and maintaining a secure, enterprise-grade web platform and APIs. This role emphasizes deep understanding and execution within an established reference architecture (Domain-Driven Design (DDD) and Onion/Hexagonal hybrid). A primary focus will be executing critical third-party financial workflows, particularly integrating with the J.P. Morgan Chase API. The ideal candidate possesses a strong background in payment gateway integration, server-side rendering, and a robust understanding of data privacy and secure application practices.

Responsibilities

• Build and maintain .NET 10 Web APIs using clean dependency injection and asynchronous programming.
• Strictly adhere to pre-existing DDD and Onion/Hexagonal hybrid architectures and SOLID principles for a decoupled codebase.
• Manage complex SQL Server transactions, optimize queries, and maintain versioned API contracts via OpenAPI/Swashbuckle.
• Maintain and optimize read-heavy Razor Views, View Components, and Partials.
• Utilize Tailwind CSS, HTMX, or Alpine.js for clean, responsive UI layouts.
• Enforce traditional web patterns like POST-Redirect-GET (PRG) and antiforgery tokens for secure form submissions.
• Own secure API integrations with enterprise payment ecosystems (e.g., J.P. Morgan Chase, Stripe, Square).
• Implement stringent application-level security, ensuring PII and financial data (credit card numbers) are never exposed or logged.
• Safely consume cloud configurations and credentials managed via Azure Key Vault and App Services.
• Write comprehensive unit, integration, and contract tests using MSTest/NUnit and Playwright.
• Operate effectively as a solo individual contributor within an Azure DevOps (Agile/Kanban) framework.

Qualifications and Job Requirements

• Experience: 8+ years in software development, with 5+ years dedicated to .NET Core / ASP.NET Core (Web API & MVC Razor).
• Modern Stack: Strong proficiency with .NET 10 and C# 14 (Async, DI).
• Architecture: Proven expertise working within established DDD, Onion, or Hexagonal patterns.
• Payment Gateways: Hands-on integration experience with major financial APIs (e.g., J.P. Morgan Chase, Stripe, Square).
• Web Mechanics: Deep understanding of SSR, the HTTP lifecycle, antiforgery tokens, and the POST-REDIRECT-GET (PRG) pattern.
• Data Privacy: Strict adherence to application-level security, ensuring PII and credit card data are never exposed or logged.
• Database & Cloud: Strong SQL Server transaction optimization paired with Azure configuration management (App Services, APIM, Key Vault).
• Execution: Proven ability to operate autonomously as a solo individual contributor within Azure DevOps (Agile/Kanban).

What We Offer

• 100% Remote Work.
• Highly Competitive USD Pay.
• Paid Time Off.
• Work with Autonomy.
• Work with Top American Companies.

Why You'll Like Working Here

• A Culture That Values You: Prioritizing well-being and work-life balance.
• Diverse, Global Network: Connect with over 600 professionals in 25+ countries.
• Team Up with Skilled Professionals: Work alongside seasoned experts.