Software Developer (.NET + AI/LLMs)

Job Description

Join Aperia Solutions, a leader in SaaS solutions for the Payments and Compliance industries. Aperia is a Texas-based fintech and managed consultancy firm that creates custom SaaS applications and other software-based solutions for the payments, banking, and processing industry. Founded in 1999, Aperia offers business intelligence, risk management, compliance, and customer intelligence platforms. With offices in Dallas, Washington DC, and Vietnam, Aperia is a fast-paced, global organization that strives to improve efficiency in compliance, risk, and customer service operations. Aperia’s clients include banks, processors, payment facilitators, merchant service providers, independent sales organizations, and government entities. A career at Aperia promises a great challenge, culture, and opportunities to forge your own path.

We are seeking an experienced Software Developer with strong expertise in Visual Studio Code, .NET Core, Visual Studio/.NET, SQL Server, React, Angular, CI/CD, API development, and secure software engineering to join our growing development team. This is a hands-on role focused on designing, developing, and maintaining modern, scalable, cloud-native applications that support high-volume transactional systems.

The ideal candidate has a strong software engineering background, is passionate about writing clean, maintainable code, and has experience integrating security into the software development lifecycle using tools such as Fortify and Harness.

Required skills

• 4–6+ years of professional software development experience using C#/.NET Framework and .NET Core/.NET 6+.
• Strong proficiency using Visual Studio Code and Visual Studio for application development.
• 4+ years of hands-on experience developing and maintaining RESTful APIs and enterprise web applications.
• Strong experience with SQL Server, including:
• Database design
• Stored procedures
• Query optimization
• Performance tuning
• Experience developing modern web applications using:
• React
• Angular
• HTML5
• CSS3
• JavaScript/TypeScript
• Experience building and maintaining CI/CD pipelines using tools such as:
• Azure DevOps
• GitHub Actions
• Jenkins
• Harness
• Proficient in GitHub Copilot AI and other AI tools
• Experience using Fortify or similar Static Application Security Testing (SAST) tools to identify and remediate security vulnerabilities.
• Experience with Git, GitHub, and modern source control workflows.
• Understanding of secure software development practices (DevSecOps).
• Experience developing cloud-native applications following 12-Factor App principles.
• Solid knowledge of:
• Object-Oriented Programming (OOP)
• Design Patterns
• SOLID Principles
• Algorithms and data structures
• Strong debugging, troubleshooting, and performance optimization skills.
• Experience working in Agile/Scrum environments.
• Excellent verbal and written communication skills.

Preferred Skills, Experience, and Education:

• Familiarity with financial or banking systems.
• Experience with cloud migration and tools such as Azure or APIGEE.
• Proficiency in monitoring and logging tools, such as Splunk and Dynatrace.
• Knowledge of microservices architecture and containerization (e.g., Docker, Kubernetes).

Functional Responsibilities

• Collaborate with Business Analysts to clarify requirements from U.S.-based stakeholders, ensuring alignment with technical and business goals.
• Design, develop, test, and maintain enterprise applications using .NET Core, C#, React, and Angular.
• Build scalable, secure, and high-performing RESTful APIs.
• Develop and optimize SQL Server databases, stored procedures, indexes, and queries.
• Create responsive and modern user interfaces using React and Angular.
• Utilize Visual Stu