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Software Engineer- Middleware

Freedompay

Philadelphia, PA/ Las Vegas, NV Hybrid permanent

Posted: January 15, 2026

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Quick Summary

The Software Engineer- Middleware is responsible for designing and developing software applications that integrate with the FreedomPay Commerce Platform, ensuring seamless integration with various payment gateways and payment systems.

Job Description

The FreedomPay Commerce Platform is the technology of choice for many of the largest companies across the globe in retail, hospitality, lodging, gaming, sports and entertainment, foodservice, education, healthcare and financial services. FreedomPay’s technology has been purposely built to deliver rock solid performance in the highly complex environment of global commerce. The company maintains a world-class security environment and was first to earn the coveted validation by the PCI Security Standards Council against Point-to-Point Encryption with EMV standard in North America. FreedomPay’s robust solutions across payments, security, identity and data analytics are available in-store, online and on-mobile and are supported by rapid API adoption. The award winning FreedomPay Commerce Platform operates on a single, unified technology stack across multiple continents allowing enterprises to deliver a consistent, repeatable experience on a global scale. FreedomPay is a fast paced, high growth company with a great culture with competitive benefits and compensation with a business casual atmosphere.

We are currently seeking a top tier Software Engineer with specific experience in the Microsoft technology stack (.Net, C#, SQL) with a focus on our middleware products and interacting with hardware devices.  This is a full-time salaried position.  You will join a team of world class engineers and developers solving complex problems, building new product lines, and expanding existing products and services.  You will be rewarded for creativity and innovation. 

The ideal candidate will be proficient in the development of high performing n-tier solutions with transaction handling and complex secure system integrations. You will leverage various frameworks, patterns, and tools. You will have shared accountability for the quality of the solution and ensure seamless integration and implementations.


Job Responsibilities (including but not limited to) :
• Build properly structured, well-commented solutions for complex integrations and complex problems.
• Work directly with 3rd party Point of Sales and hardware devices.
• Maintain and expand our middleware solutions.
• Exercise thorough unit and system testing.
• Work within a scrum team to create stories, tasks, estimates, and delivery timelines for each release.
• Follow and contribute to technical standards, coding standards, tools, platforms, and approaches.  Help define and create application frameworks and common libraries for a wide variety of solutions, always seeking to reuse code and core frameworks where possible.
• Work with the QA team to ensure proper test plan, test coverage, test execution, and defect remediation.
• Related tasks as assigned.


Required Skills and Experience :
• At least a BS/BA Degree in MIS, Computer Science, Engineering, or related field
• A minimum of 5 years experience as a Software Developer/Engineer
• Strong, written and verbal communication skills
• Experience with .Net 4.6.2+, VS 2019+
• C#
• Object-oriented design and programming
• Windows Servers/Services
• Experience building multi-threaded, high throughput, transactional processing software
• Knowledge of, and commitment to, industry-accepted best practices in source code control, architecture, coding structure, and unit/system testing
• Building and documenting interfaces for 3rd party consumption
• Working knowledge of current network hardware, protocols, and standards, including TCP/IP socket programming, HTTP and HTTPS handling, WiFi, SSH, SSL.
• Abstract thinking skills and employing experience and knowledge to create innovative solutions
• Knowledge of full application life cycle design tools and methodologies, e.g., Agile/Scrum, Extreme Programming
• Excellent multi-tasking skills, managing multiple initiatives at one time in a fast-paced environment
• Experience with accurate project estimating and planning, working in a team oriented and collaborative environment, working in a high pressure and fast paced organization
• Data security, encryption handling, compliance, data privacy and laws
• After hours support as needed
• Strong MS Office, Visioor Lucid Chart
• Occasional travel may be required (U.S.)


Optional Skills and Experience :
• A minimum of 2 years experience with devices
• Direct interaction with hardware devices
• SQL and SQLite
• GIT
• Wireshark
• Java/Kotlin
• C, C++
• Linux
• Virtualization, including VirtualBox or VMWare
• Docker, Azure, AWS, or GCP
• Experience in high volume transactional processing environments, preferably financial or payment related


As the fastest growing commerce company in the industry, we offer the opportunity for tremendous upward mobility within the company as well as development and professional growth opportunities. FreedomPay's fulltime roles provide exceptional benefits including medical, prescription, dental and vision coverage, Life Insurance, Retirement Plans with company match, commission sharing plan, flexible hybrid working environment, and great parental and other leave programs. All positions must be able to successfully pass a background check as well as a credit check.

FreedomPay is an Equal Opportunity Employer, including Disability/Veterans. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

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