Payment Integration Engineer (C#/.NET, PCI-DSS)

RXinsider LTD.; Southlake (TX); On-site; USD 100,000 - 150,000; Full time

Benefits offered by this job

Employer-paid medical insurance

Employer-paid life insurance

401(k) with match

Health Savings Accounts (HSA)

Paid time off

Education reimbursement

Adoption assistance

Dependent Care FSA

Counseling resources

Fully stocked breakroom

Job summary

Liberty Software, based in Southlake, TX, is hiring a Payment Integration Developer to own and advance its credit card processing, payment terminal, and benefit card integrations across pharmacy environments.

You will collaborate with Product, QA, and Architecture to deliver PCI-compliant, reliable payment experiences, integrating with Worldpay/triPOS, and other gateways, while supporting healthcare payment workflows.

Qualifications

• 3+ years of software development experience with a focus on payment or financial integrations.
• Bachelor's degree in Computer Science, Software Engineering, or equivalent experience.
• Hands-on experience integrating with payment gateway APIs (e.g., Worldpay/triPOS, Stripe, Square, Adyen, or similar).
• Strong understanding of PCI-DSS compliance requirements.
• Proficiency in C# / .NET (Liberty's primary stack).
• Experience with RESTful API design and consumption.
• Experience with semi-integrated payment solutions (triPOS specifically) preferred.
• Familiarity with healthcare or pharmacy payment workflows (copays, HSA/FSA cards, OTC benefit cards) a plus.
• Knowledge of card tokenization standards and stored credential frameworks beneficial.
• Experience with SQL Server and relational database design preferred.
• Exposure to Mastercard/Visa compliance programs and certification processes a plus.
• Prior work in a small-to-mid-size software company desirable.

Responsibilities

• Build and maintain integrations with payment processors including triPOS/Worldpay and emerging payment gateways.
• Develop and support OTC medical benefit card integrations (NationsBenefits, OTC Network, Solutran, Soda Health).
• Implement card tokenization, consent management, and stored credential workflows (MIT/CIT classification).
• Ensure ongoing compliance with card brand requirements (Mastercard, Visa) including surcharge rules, merchant data mandates, and L2/L3 data standards.
• Troubleshoot and resolve payment processing issues across production pharmacy environments.
• Collaborate with Product and QA to define acceptance criteria and validate payment workflows.
• Document integration specifications, API contracts, and compliance requirements.
• Monitor payment industry changes and proactively recommend updates to maintain compliance.

Skills

Payment integrations

C# / .NET

REST APIs

PCI-DSS compliance

SQL Server

Worldpay/triPOS integration

Healthcare payments knowledge

Education

Bachelor's degree in Computer Science, Software Engineering, or equivalent

Tools

Worldpay/triPOS

Stripe

Square

Adyen

Job description

Liberty Software, based in Southlake, TX, is hiring a Payment Integration Developer to own and advance its credit card processing, payment terminal, and benefit card integrations across pharmacy environments.

You will collaborate with Product, QA, and Architecture to deliver PCI-compliant, reliable payment experiences, integrating with Worldpay/triPOS, and other gateways, while supporting healthcare payment workflows.