Software Developer

Paynuity

Full Stack Developer at Paynuity responsible for designing, enhancing, and building payment technology services. Collaborating in an agile environment to deliver high-quality applications and solutions.

Posted 7/20/2026full-timeRemote • Florida • 🇺🇸 United StatesMid-LevelSenior💰 $75,000 - $100,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates extensive experience in Full Stack Development with a strong focus on .NET Framework, secure application design, and agile methodologies. Proficient in collaborating with stakeholders to create intuitive user experiences while managing multiple projects effectively.

Highest-signal resume keywords

Full Stack DevelopmentASP.NET (Web Forms and Web API)Microsoft SQL ServerC# ProgrammingUnit Testing

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

.NET FrameworkVisual StudioHTMLJavaScriptJQueryCSSMySQLMariaDBPerformance AnalysisSecurity Design

Soft Skills

Self-MotivationHigh InitiativeOral CommunicationWritten Communication

Tools & Technologies

TFSSource ControlContinuous IntegrationBuild Server

Industry Keywords

Agile DevelopmentN-Tier ArchitectureService-Oriented Architecture (SOA)PCI-DSS

Tech Stack

Tools & technologies

ASP.NETJavaScriptjQueryMariaDBMS SQL ServerMySQL.NETSQLSubversionTFS

About the role

Key responsibilities & impact

The Full Stack Developer is responsible to help define and design the requirements, UI/UX, construction, integration, testing, verification and maintenance of unit tests and core application code for the models, views, and controllers of our API-based services
Help lead, design, enhance and build our services for Customers in an agile development environment
Unit testing, peer programming, code reviewing, and regular check-ins for continuous integration
Develop secure applications and refactoring existing .NET 2/4 web forms
Collaborate with stakeholders and UX/UI to produce applications that flow seamlessly and work intuitively
Write optimized and quality code
Support and prioritize multiple ongoing projects
Document and deploy developed programs

Requirements

What you’ll need

5+ years’ experience in complex development environments
Hands-on knowledge of the .NET Framework (2.0, 3.5, 4.0 and/or 4.5+), including Visual Studio, TFS, C#, ASP.NET (Web Forms and Web API)
5+ years’ experiencing working with Microsoft SQL Server AND MySQL/MariaDB/Percona
Working with n-tier architectures (UI, Business Logic Layer, and Data Access Layer) along with some experience with service-oriented architectures (SOA)
Good understanding of Web technologies (HTML, JavaScript, jQuery and CSS)
Working knowledge of development tools such as source control (Source Anywhere, TFS, Subversion, build server, etc.) and continuous integration build practices
Experience in designing secure applications and awareness of security implications from design to implementation phase of project
Experience with PCI-DSS environments
Experience with performance analysis, profiling and optimization
High initiative, self-motivation and drive to exceed expectations
Proficiency in both oral and written communication.

Benefits

Comp & perks

Paid Federal Holidays
PTO Accrual from Day One