Internal Applications Developer — Hybrid, Enterprise Integrations

Creative Financial Staffing, LLC; New York (NY); Hybrid; USD 70,000 - 75,000; Full time

Benefits offered by this job

Comprehensive benefits package

Retirement plan with employer matching

Tuition reimbursement and professional

Hybrid work after onboarding

Job summary

Creative Financial Staffing, LLC seeks an Internal Applications Developer to support critical business, HR, payroll, finance, and administrative systems from our Brooklyn office. You will design and develop custom applications, build enterprise integrations, and directly impact operational efficiency.

Hybrid work after onboarding, with opportunities to modernize legacy apps and collaborate with business leaders across departments.

Qualifications

• 2+ years of application development experience in an enterprise environment.
• Proficiency with C# and the .NET platform (including .NET Core/.NET 8).
• Experience developing apps with ASP.NET Core, MVC, Razor Pages, or Web API.
• Strong SQL Server experience with T-SQL and stored procedures.
• Experience consuming REST APIs and working with JSON; third-party integrations.
• Front-end basics: HTML, CSS, JavaScript for internal apps.
• Understanding of data validation, data integrity, error handling, and secure design.
• Ability to communicate with both technical and non-technical stakeholders.
• Bachelor's degree in Computer Science or related field, or equivalent experience.

Responsibilities

• Design, develop, and maintain custom web applications and internal business tools.
• Build and support API integrations between payroll, finance, HRIS, and other enterprise systems.
• Create automated data validation and synchronization processes for data accuracy.
• Develop and optimize SQL Server databases, stored procedures, and data workflows.
• Collaborate with HR, finance, and admin teams to gather requirements and deliver user-friendly solutions.
• Implement security controls, permissions, logging, and audit functionality within internal apps.
• Troubleshoot application and data issues while improving existing systems.

Skills

C#

.NET platform

ASP.NET Core

MVC

Razor Pages

Web API

SQL Server

T-SQL

REST APIs

JSON

HTML/CSS/JavaScript

Data validation

Security

Stakeholder communication

Education

Bachelor's degree in Computer Science or related field

Tools

Git

IIS

Windows Server

Entity Framework Core

ADO.NET

Job description

Creative Financial Staffing, LLC seeks an Internal Applications Developer to support critical business, HR, payroll, finance, and administrative systems from our Brooklyn office. You will design and develop custom applications, build enterprise integrations, and directly impact operational efficiency.

Hybrid work after onboarding, with opportunities to modernize legacy apps and collaborate with business leaders across departments.