Senior Payment Systems Developer - ACH/eCheck Integration

We are seeking a highly skilled IT Consultant / Payment Systems Developer to design, develop, integrate, and support a secure eCheck / ACH payment solution within an existing online payment platform. This role is ideal for a hands-on technical professional with strong experience in web application development, payment processing systems, API integrations, enterprise system integration, Azure DevOps, and secure transaction-based applications.

The selected consultant will help build a customer-facing web payment interface that allows users to initiate eCheck payments through a secure online portal. The role requires a strong understanding of financial transaction workflows, ACH/eCheck processing, system integration, data security, accessibility, UI/UX best practices, and regulated application environments.

Key Responsibilities

Design, develop, and implement a secure web-based eCheck / ACH payment module integrated with an existing online payment system.

Build and maintain a customer-facing payment interface accessible through public web portals.

Develop backend services, APIs, and integration components to support payment validation, transaction submission, status tracking, and processing workflows.

Integrate the payment solution with enterprise applications, legacy systems, databases, and existing payment workflows.

Ensure secure transaction processing, encryption, data protection, and compliance with applicable financial and security standards, including PCI-DSS and NACHA guidelines.

Collaborate with business users, technical teams, and stakeholders to gather requirements and translate them into scalable technical designs.

Design and develop responsive, accessible, user-friendly web interfaces with a strong focus on customer experience.

Conduct usability reviews and recommend improvements based on user feedback, analytics, accessibility standards, and web usability best practices.

Troubleshoot and resolve issues related to payment processing, application interfaces, performance, integrations, and production support.

Document system architecture, APIs, workflows, technical specifications, deployment steps, and support procedures.

Support ongoing maintenance, upgrades, optimization, scalability improvements, and future enhancements.

Participate in code migration from TFS to Azure DevOps Git repositories.

Use Azure DevOps for work item tracking, source control, CI/CD pipelines, build/release management, and code management.

Do you have a Bachelor’s degree?, Bachelor’s degree in Computer Science, Information Technology, or a related field, or equivalent professional experience.

Minimum 5+ years of software development and system integration experience, including integration with enterprise or legacy platforms.

Proven experience developing or integrating payment processing systems, preferably ACH, eCheck, online billing, invoice payment, banking, checkout, or transaction-based platforms.

Strong experience with secure transaction processing, encryption, validation, and data protection practices.

Strong proficiency in modern web application development, including JavaScript, HTML, CSS, front-end frameworks, Java, .NET, or related technologies.

Experience designing and developing customer-facing web applications with strong UI/UX, responsive design, and accessibility focus.

Experience implementing APIs and system integrations using REST and/or SOAP services.

Experience with relational databases, SQL, data modeling, and transaction-based data workflows.

Hands-on experience with Azure DevOps, including work item management, repositories, CI/CD pipelines, and release processes.

Experience migrating code from TFS to Git-based repositories.

Experience integrating applications with enterprise systems, legacy systems, and third-party platforms.

Experience working in government, utilities, financial services, healthcare, insurance, or other highly regulated environments.

Experience with Microsoft Azure services, including Azure App Services, Azure Functions, and API Management.

Experience supporting high-availability, transaction-based systems such as online payment platforms, billing portals, ACH workflows, banking applications, or invoice payment systems.

Preferred Skills

Experience with public-sector or utility-sector systems.

Knowledge of PCI-DSS, NACHA, ACH processing rules, secure payment workflows, and financial data protection standards.

Experience with authentication, authorization, secure API gateways, audit logging, and transaction reconciliation.

Experience improving customer-facing digital payment experiences.

Strong documentation, communication, troubleshooting, and stakeholder collaboration skills.

Ideal Candidate Profile

The ideal candidate is a hands-on developer and systems integrator who has successfully worked on secure, transaction-based web applications. This person should be comfortable working across front-end, backend, APIs, databases, cloud services, DevOps pipelines, and legacy system integrations. They should understand the importance of security, compliance, reliability, and usability in payment-related applications.

Additional Requirements

Candidate must be available for a hybrid work arrangement with at least 2 days onsite per week.

Candidate must complete a BCI fingerprint background check prior to starting.