Senior Finance Systems Software Developer (Payment & ERP Integrations, ERP & Custom Applications)

Technuf, LLC, a Maryland-based SBA-certified 8(a) small business, delivers leading-edge technology solutions to government and industry clients. Based in Rockville, MD, Technuf seeks a Senior Finance Systems Software Developer to design, build, and maintain finance software and ERP integrations for county government operations, with emphasis on payments, reconciliation, and UI/UX improvements. The role is onsite and collaborative, requiring a proactive mindset to translate complex financial workflows into robust, scalable software solutions.

Responsibilities

• Attend a daily 8:45 AM team virtual check-in (non-negotiable).
• Ensure video is enabled for all virtual meetings (non-negotiable).
• Develop responsive, user-friendly web applications.
• Work directly and independently with the business Subject Matter Expert when building or enhancing applications.
• Maintain and improve existing web applications and create maintenance documentation as needed.
• Ensure consistent design standards across platforms.
• Optimize applications for maximum performance and scalability.
• Contribute to UI/UX design decisions and implement improvements based on user feedback.
• Assist with archiving existing application source code on DevOps from SVN and create documentation as required by the FIN IT Chief or the Department’s IT Expert Software Developer.

Requirements

• Minimum experience: 3 years.
• Education: Bachelor's degree related to software development.
• At least 7 years of hands-on experience supporting and maintaining legacy high-code applications with little to no documentation, with work performed within the last 5 years.
• At least 7 years of hands-on development experience building specialized and customized finance-technology applications (payments, reconciliation, billing, or financial transaction processing), with at least one relevant project in the last 3 years.
• At least 5 years of hands-on system integration experience with Tyler Technologies MUNIS or a comparable Enterprise ERP platform, including API, database, or file-based integrations, data mapping, and troubleshooting.
• At least 3 years of recent hands-on system integration experience with the Paymentus platform, including implementation, configuration, testing, or troubleshooting of payment redirects and iframe integrations in UAT or production environments (within last 3-5 years).
• At least 7 years of hands-on UI/UX development experience improving custom-built applications based on user input, including modern responsive design practices; at least 3 years must be within the last 5 years with demonstrable improvements.
• Proficiency in HTML and CSS, and experience with a CSS framework (Bootstrap or Tailwind).
• JavaScript development experience.
• Responsive and mobile-first design principles, with strong UX/UI judgment.
• Experience with C#, ASP.NET Webforms, MVC, and ASP.NET Core.
• Azure Entra ID and Azure AD B2C experience.
• Use of AI for software development.
• System integration and interface development experience.
• Microsoft SQL Server expertise.
• Microsoft system administration knowledge (operating systems, IIS, networking).
• Ability to rapidly learn new technology and adapt to evolving requirements.
• Knowledge of Microsoft DevOps for software development.
• Strong problem-solving skills related to financial business problems.
• Ability to work both independently and collaboratively, with solid communication and documentation capabilities.

Technologies

• Tyler Technologies MUNIS
• Paymentus
• HTML, CSS, Bootstrap, Tailwind
• JavaScript
• C#, ASP.NET Webforms, ASP.NET MVC, ASP.NET Core
• Azure Entra ID, Azure AD B2C
• AI for software development
• System integration and interface development
• Microsoft SQL Server
• IIS, SVN, Microsoft DevOps

Benefits

• 401(k)
• Dental insurance
• Health insurance
• Health savings account
• Life insurance
• Paid time off
• Vision insurance

Who We Are

Technuf, LLC is a Maryland-based SBA-certified 8(a) small business that provides leading-edge technology solutions, deep domain expertise, and highly skilled professionals to help clients meet mission-critical objectives.

What We're Looking For

Technuf seeks a senior Finance Software Developer Expert with extensive experience in finance technology, ERP integrations, and delivering reliable software solutions for government operations.

Job Description

The Department of Finance maintains complex, enterprise-scale financial applications supporting county operations. Because unique business requirements and regulatory timelines can limit off-the-shelf solutions, the department often relies on customized software and middleware. The ideal candidate is a self-starter who can work independently with the department's IT Expert Software Developer, be detail-oriented, and propose practical technical solutions to address daily financial challenges.

Interviews

Both remote and in-person interviews may be required for this opportunity.

Location

On-site in Rockville, MD (Montgomery County).