Senior Full Stack Engineer (Payments)

We are seeking an experienced Senior Full Stack Developer to help build ProPay2.0, our next-generation payment platform and financial infrastructure. In this role, you will design, develop, and support highly scalable, secure payment solutions that process ACH, virtual card, check, and other digital payment transactions while contributing to the architecture and evolution of our payment platform.

What You'll Do

• Design, develop, and maintain scalable full-stack applications for enterprise payment processing
• Build scalable front-end applications using React and modern UI frameworks
• Develop secure, high-performance backend services and RESTful APIs
• Use AI-assisted development tools (Claude Code, Copilot, etc.) to accelerate coding, refactoring, and debugging
• Design and optimize relational database schemas and SQL queries
• Integrate with external payment providers, banking partners, and third-party APIs
• Ensure applications meet security, compliance, and performance requirements
• Participate in architecture discussions and technical design reviews
• Participate in code reviews and uphold engineering best practices across the team
• Identify opportunities to improve system design, performance, and developer productivity
• Troubleshoot production issues and identify root causes
• Write automated unit, integration, and end-to-end tests
• Collaborate closely with Product, QA, DevOps, and Operations teams throughout the software development lifecycle

• Bachelor's degree in Computer Science or related field, or equivalent experience
• 7+ years of full-stack development experience
• Strong experience with Java and Spring Boot
• Strong Experience designing and consuming RESTful APIs
• Strong knowledge of SQL and relational databases such as PostgreSQL, Oracle, or SQL Server
• Experience with React and modern front-end frameworks
• Experience with Git and modern CI/CD pipelines
• Experience building cloud-based applications (AWS preferred)
• Experience working on payment processing, fintech, banking, healthcare payments, or financial services platforms
• Experience with ACH, EFT, virtual cards, checks, or digital payment processing
• Excellent analytical and problem-solving skills
• Strong communication and collaboration skills
• Strong understanding of Agile development methodologies

Nice to Have

• Familiarity with payment standards and financial transaction workflows
• Experience integrating with third-party APIs and secure payment gateways
• Knowledge of OAuth2, JWT, SSO, and modern authentication frameworks
• Familiarity with AI-assisted development tools (Claude Code, GitHub Copilot, etc.)
• Experience with Docker, Kubernetes, and containerized deployments
• Familiarity with messaging platforms such as Kafka or RabbitMQ
• Experience with performance tuning, observability, and production monitoring
• Knowledge of secure coding practices and regulatory requirements
• Experience with payment reconciliation and settlement system
• Experience with PCI DSS or other financial compliance standards
• Knowledge of healthcare payment workflows and EDI transactions
• Experience with test automation frameworks
• Experience supporting mission-critical, high-availability systems

Why You'll Love Working at Office Ally

At Office Ally, we've been revolutionizing healthcare administration since our inception. What started as a clearinghouse focused on simplifying insurance claims processing for healthcare providers has grown into a full-suite healthcare technology company. We offer a range of affordable, cloud-based revenue cycle management solutions -from eligibility verification and claims management to revenue recovery and payment processing -that help healthcare organizations of all sizes streamline operations and reduce administrative burdens so they can focus on what matters most: patient care. In April 2026, Office Ally acquired Jopari Solutions, Inc, a leader in straight-through electronic claims processing for Property & Casualty (P&C), Commercial, and Government healthcare. Jopari brings deep industry expertise and innovative enterprise payment solutions that are transforming how disbursements are handled across the insurance ecosystem. Together, we are expanding our capabilities across the full healthcare transaction lifecycle, connecting claims, payments, and data exchange to deliver a more seamless and efficient experience for providers, payers, and partners. At the core of our company are four key values that guide our mission and work: * Ownership: We take pride in our responsibilities, driving results and taking accountability for the success of our projects. * Empowerment: We believe in giving our team the autonomy and support to make decisions that lead to innovative solutions. * Innovation: We continuously seek new and better ways to improve healthcare administration, embracing creativity and forward-thinking technology. * Transparent Communication: Open, honest communication is at the heart of our collaborations, internally and with our clients, ensuring alignment and trust., At Office Ally, your work has a direct impact on healthcare providers and their ability to deliver exceptional care. We're driven by a mission to simplify healthcare administration, making it easier for providers to focus on what they do best-helping patients. As an Office Ally employee, you'll be at the heart of our efforts to deliver exceptional service and software solutions to our clients in the healthcare space.