Backend Developer to Integrate ACH Payment API into CRM Platform

@softsolution2000

I have extensive experience with SOAP APIs, ACH payment processing, JavaScript, Node.js, RESTful API development, and CRM systems, making me a great match for the Backend Developer to Integrate ACH Payment API into CRM Platform project. I am confident in my ability to ensure a seamless integration while prioritizing industry standards and security. The budget can be adjusted after discussing the full scope, and I am eager to start working on this project. Please go through my profile its 15 years old see the work I did over the years. No Win No Fee means that your satisfaction is my utmost priority. Lets discuss the job details. Moreover, I am willing to start the job and perform tasks without even being hired; it is just to show my commitment to this project. Looking forward to hear from you.

@Microlent

Hello, This is not just an API hookup, especially with ACH and SOAP involved. I’ve worked on payment integrations where the real work is in handling settlement timing, return codes, idempotency, and secure data flow, not just sending requests. For this integration, I would build a dedicated payment service layer in Node.js that wraps the SOAP API cleanly, handles WSDL-based request structures, and abstracts ACH responses into consistent internal REST endpoints for your CRM. This keeps the CRM insulated from SOAP complexity while maintaining traceable, secure transaction handling. I’m familiar with ACH flows, NACHA return codes, delayed settlement scenarios, and the importance of masking sensitive bank data in logs. Proper error mapping, retry logic for transient failures, and status reconciliation are critical to avoid duplicate or inconsistent transactions. If helpful, I’d like to understand whether the processor is real-time API-based or batch/NACHA file-driven, and how your CRM currently models payment states. I’m comfortable working full-time hourly and aligning with your internal standards. Best, Jenifer

@n2rtechnologies

Hello, I understand you're looking for an expert developer to seamlessly integrate an ACH payment processor into your CRM system. My extensive experience in payment integrations ensures a smooth and efficient process, allowing your platform to handle transactions securely and reliably. I will focus on delivering a robust solution that meets your specific requirements, ensuring the integration enhances your CRM's functionality. I prioritize clear communication and timely updates throughout the project, so you can expect a transparent workflow. Additionally, I am committed to addressing any potential issues proactively to guarantee a successful integration. Let’s discuss how I can help elevate your CRM platform with this essential feature. Regards, Nurul Hasan

@designysoft

Hello there, I have experience integrating payment processors and financial APIs into CRM and enterprise systems, including SOAP-based services and ACH workflows. I can implement a secure, standards-compliant integration between your ACH provider and CRM, ensuring reliable transaction handling and clean user flows. My background includes Node.js/JavaScript backend development, API middleware design, and payment integrations with strong attention to data integrity, logging, and error handling. I’m familiar with NACHA-aligned processing patterns, secure credential management, and bridging SOAP services into modern REST-style application layers when needed. I have also worked on various domains. Also, we will converse further once you reply to me on Freelancer Messenger. Best regards,

@seefattechnologi

YES, it's aligned with my expertise ------------------I am highly proficient to work on this project . I am Passionate PHP/Full stack developer having rich experience with all the latest technologies with so many successful Tasks. I have some queries to give you accurate time Please ping me to get started and provide you great results. Thanks

@Julian29

Hello, I HAVE EXTENSIVE EXPERIENCE IN ACH PAYMENT & SOAP API INTEGRATIONS ****** You can follow the project’s progress in the tracker. I’m available for 40 hours of work each week. ****** I have 9+ years in backend development, I specialize in integrating payment processors into CRM platforms using SOAP and REST APIs with JavaScript/Node.js. I understand ACH/NACHA standards and can ensure secure, seamless transactions with a user-friendly workflow. I have successfully delivered similar integrations with proper error handling, logging, and compliance. I would love to discuss your CRM setup, the ACH API details, and workflow requirements in chat so we can define the best implementation approach and timeline. Thanks & Regards Julian

@royalwebraisers

Hi, As per my understanding: you need secure ACH processing integrated into your CRM via SOAP API with compliant transaction handling and clean Node.js services. Implementation approach: • SOAP client integration with NACHA-compliant flows • Tokenized payment handling + audit logs • REST endpoints for CRM operations Queries: sandbox credentials available? expected transaction volume? I will share my portfolio on your first message.

@abhisaini0188

With over a decade of experience in web and mobile app development, I am well-versed with SOAP APIs and have a strong understanding of payment processing systems — making me an ideal candidate to integrate your ACH payment processor into your CRM using the provided API. My knowledge extends to ACH payments and NACHA standards, which will ensure that the integration complies with industry best practices. Moreover, I have ample knowledge of JavaScript and Node.js, which will play a pivotal role in ensuring a seamless and secure integration that aligns with your project goals. My proficiency in RESTful API development adds another layer of stability and reliability to the entire system. I believe my technical skills, along with my unwavering attention to detail align well with your project demands. Lastly, my track record boasts successful completions of similar payment integration projects. I have always aimed at delivering solutions that are not only functional but also scalable. And this aligns perfectly with your project need of turning the provided solution into a high-performance one. My commitment to client satisfaction, coupled with my extensive background in payment integration projects makes me your perfect choice for this job. Let’s collaborate to create a platform that revolutionizes your business!

@CANWS

Hello, I have strong experience integrating payment processors via SOAP APIs, including secure ACH workflows aligned with NACHA standards. I’m comfortable working in JavaScript/Node.js environments and building clean abstraction layers that bridge SOAP services with modern RESTful CRM architectures. I can handle the full integration lifecycle — WSDL interpretation, request/response structuring, authentication handling, transaction validation, error mapping, webhook/callback logic (if applicable), and secure logging — while ensuring compliance, data integrity, and production-grade reliability. Security, auditability, and edge-case handling are priorities in payment systems, and I follow strict best practices around encryption, tokenization, and environment separation. I’m available full-time hourly and ready to discuss your CRM architecture and API documentation to get started quickly.

@toriquldev123

Hello Dear! I write to introduce myself. I'm Engineer Toriqul Islam. I was born and grew up in Bangladesh. I speak and write in English like native people. I am a B.S.C. Engineer of Computer Science & Engineering. I completed my graduation from Rajshahi University of Engineering & Technology ( RUET). I love to work on Web Design & Development project. Web Design & development: I am a full-stack web developer with more than 10 years of experience. My design Approach is Always Modern and simple, which attracts people towards it. I have built websites for a wide variety of industries. I have worked with a lot of companies and built astonishing websites. All Clients have good reviews about me. Client Satisfaction is my first Priority. Technologies We Use: Custom Websites Development Using ======>Full Stack Development. 1. HTML5 2. CSS3 3. Bootstrap4 4. jQuery 5. JavaScript 6. Angular JS 7. React JS 8. Node JS 9. WordPress 10. PHP 11. Ruby on Rails 12. MYSQL 13. Laravel 14. .Net 15. CodeIgniter 16. React Native 17. SQL / MySQL 18. Mobile app development 19. Python 20. MongoDB What you'll get? • Fully Responsive Website on All Devices • Reusable Components • Quick response • Clean, tested and documented code • Completely met deadlines and requirements • Clear communication You are cordially welcome to discuss your project. Thank You! Best Regards, Toriqul Islam

@jignesh06

Hello, I have extensive experience in the mentioned technologies and am ready to start immediately. Let’s connect via chat to discuss the project requirements further. Thank you, Jignesh

@ivaylo8

Hello, I am excited to propose my services for integrating the ACH payment processor into your CRM platform using the provided SOAP API. With extensive experience in SOAP API integration and a solid understanding of payment processing systems, I can ensure a seamless integration that prioritizes secure transactions and user-friendly functionality. Having worked on various payment integration projects, I am proficient in JavaScript/Node.js and have a strong grasp of NACHA standards related to ACH processing. My focus on detail and industry standards guarantees that your project will be executed with the utmost care. I am ready to collaborate closely with you to realize your vision and enhance your CRM’s capabilities. Thank you for the opportunity, and I look forward to the possibility of working together. Best regards, Ivaylo

@chesslover

I'm an expert with SOAP, WSDL, WS-Security (SOAP Security), XML APIs, and other API technologies. For reference, below is my SOAP WSDL project here in Freelancer: https://www.freelancer.com/projects/java/CXF-wsdl-config-expert-required I have primarily worked in the banking, fintech / financial services, and e-commerce industries and I'm very familiar with payment technologies such as ACH, SWIFT bank messaging, and the x402 Standard. I have also integrated Square and Stripe cloud payments. I have also been using numerous API technologies and API best practices throughout the years: - RESTful JSON: both Hypermedia REST (HATEOAS) and Reactive REST - GraphQL - Webhooks - gRPC + protobuf - JSON-RPC - API patterns such as Gateway and BFF ("Backends for Frontends" pattern) - API-first development with Swagger / OpenAPI - API security: JWT, OpenID Connect, OAuth2, SAML, PASETO, WS-Security Since 2017 I have also been using full-stack ES6+ TypeScript Node.js frameworks such as Angular, React, and Vue. I'm very excited about this opportunity and I look forward to hearing from you. Thank you for reviewing my proposal. Best regards, Valentino

@monicasynthesis

Hello, I’ve gone through your job description and understand that you’re looking for an expert to integrate an ACH payment processor into your CRM using a SOAP API, ensuring secure and seamless transaction functionality. With 5+ years of experience in API integrations, payment systems, and backend development, I’ve successfully completed similar projects with a strong focus on reliability and compliance. What I can help you with: • Integrating and configuring ACH processing via SOAP API • Ensuring secure transaction flow aligned with NACHA standards • Building clean, well-documented, and scalable integration logic Warm regards, Monica Bhatia

@devbaloni1983

Hello, Hope everything is going well! I am a Node.js Backend Developer focused on building secure, scalable, and high-performance server-side applications. I design clean APIs that connect your mobile or web app efficiently. What I Can Build for You 1. Fully customized REST APIs 2. Authentication systems (JWT, OAuth) 3. Backend for mobile & web applications 4. Real-time chats, tracking & notifications 5. Admin panel backend with full CRUD 6. Payment gateway integration 7. MongoDB / MySQL database design Why Work With Me? 1. Clean, secure & modular code 2. Strong backend architecture knowledge 3. End-to-end backend + deployment support 4. Excellent speed & performance optimization 5. Fast communication & timely updates Let’s Discuss Share your project details — I’ll give you: 1. Best API structure 2. Timeline 3. Pricing Excited to build a powerful backend for you!

@technologiesit

With a decade's worth of experience as a web developer, I bring to the table a deep knowledge of payment processing systems and SOAP API integration. More importantly, I am seasoned in using JavaScript, making me an ideal Backend Developer for your CRM system integration project. Working with platforms similar to yours in the realm of WordPress, Shopify, and Codeigniter has given me significant exposure to API integration and the best practices involved. Ultimately, my dedication to adhering to industry standards and my attentiveness to detail equips me well for this role. I understand how significant a flawless integration and smooth user experience are when it comes to financial transactions, which is exactly what I assure you with my skillset. My proven track record in similar projects underscores this pledge. Above all, committing 100% to client satisfaction is paramount and a notion deeply etched into the values of my development team with whom I work at Prajapati Technologies. Thus, if you want an experienced, reliable Backend Developer who can surpass your expectations and genuinely care about adding value to your business, then I'm your perfect fit.

@swapnilparkhya

Hey Mate , Absolutely this is high-stakes integration, and I’m fully equipped to handle it. ACH + SOAP inside a CRM environment requires precision, compliance awareness, and secure transaction architecture not just API wiring. I have strong experience integrating **SOAP-based financial services** with Node.js backends while maintaining strict validation, logging, and security controls. My Approach ================== ** Technical Architecture First** I’ll analyze the provided SOAP WSDL, map request/response structures, and build a clean service layer in Node.js to abstract payment logic from your CRM core. ** Secure ACH Implementation** * NACHA-compliant data handling * Proper routing/account validation flow * Idempotency safeguards * Error mapping and retry logic * Secure logging (no sensitive exposure) ** CRM Integration Layer** * Seamless transaction triggers * Status updates synced to CRM records * Webhook or polling handling (if applicable) * RESTful wrappers if needed for internal services **Compliance & Stability** * Input validation * Encryption standards adherence * Detailed transaction auditing * Edge-case handling for failed, reversed, or pending payments I focus on building **secure, production-ready financial integrations**, not temporary connectors. If you’re looking for someone who understands both SOAP architecture and ACH compliance deeply I’m ready to deliver. Anks

@DanieE4

We've just completed a similar project. We recently helped a business integrate a secure payment solution into their existing system, improving transaction reliability and automation. We will help you integrate your ACH processor into your CRM with a seamless, secure, and fully functional SOAP API connection. You won't find someone better aligned with what you're looking for. I understand this requires strong SOAP API integration, compliance with NACHA standards, and careful handling of secure ACH transactions inside a user friendly workflow. I have solid experience with Node.js, JavaScript, RESTful services, payment gateways, and building reliable integrations that follow strict industry standards and security best practices. I'd love to chat about your project! The worst that can happen is you walk away with a free consultation. Regards,

@mayankinnovative

Hi, As per my understanding: You need to integrate an ACH payment processor into your CRM using a provided SOAP API. The integration must support secure ACH transactions, comply with NACHA standards, and function reliably within your existing JavaScript/Node.js environment. The priority is secure handling, accurate transaction flow, and seamless CRM-side usability. Implementation approach: I will begin by reviewing the SOAP WSDL and authentication method, then design a secure integration layer in Node.js that abstracts SOAP calls into clean internal services. The module will handle token/session management, request signing (if required), and structured error handling. ACH flows will be implemented with proper validation, batching (if applicable), and status reconciliation logic. I will ensure sensitive data is encrypted in transit and stored securely per compliance standards. Logging and idempotency checks will prevent duplicate transactions. If needed, I can wrap SOAP responses into RESTful endpoints for cleaner CRM integration. A few quick questions: Does the SOAP API use certificate-based authentication or credentials? Is this for one-time ACH or recurring debits? Do you require webhook-style status updates or polling?