You will get Secure payment workflow integration
Top Rated
Top Rated
Project details
Do you need a secure payment workflow integrated into your SaaS platform? 💳
I implement end-to-end payment workflows including recurring billing, usage-based charges, refund logic, webhook synchronization, and error handling using Node.js or Python ⚙️.
Let’s build a secure payment flow that scales with your product.
Message me before placing an order to align on your billing model.
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I implement end-to-end payment workflows including recurring billing, usage-based charges, refund logic, webhook synchronization, and error handling using Node.js or Python ⚙️.
Let’s build a secure payment flow that scales with your product.
Message me before placing an order to align on your billing model.
Buzz: secure payment workflow integration, payment workflow integration secure, secure payment workflow implementation, saas secure payment workflow integration, payment processing workflow integration, payment gateway workflow integration, secure billing workflow integration, subscription payment workflow integration, payment workflow backend implementation, payment workflow api integration, stripe secure payment workflow integration, secure payment workflow architecture, payment workflow system integration, payment workflow error handling integration, secure payment workflow expert integration, secure payment workflow service integration, scalable payment workflow integration, payment workflow backend architecture, secure payment flow system, professional secure payment workflow integration
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$50
|
Standard
$100
|
Advanced
$200
|
|---|---|---|---|
| Delivery Time | 14 days | 30 days | 60 days |
Number of Revisions | 0 | 1 | 2 |
Number of Pages | 5 | 5 | 5 |
Design Customization | - | - | |
Content Upload | |||
Responsive Design | |||
Source Code | - |
42 reviews
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GH
Griff H.
May 3, 2026
Framer Dev for Design-to-Launch Site Builds
Dmitrii was a good person to work with. They completed the work and were willing to address revisions as necessary
AS
Arya S.
Mar 27, 2026
Salesforce APEX and LWC Developer for SFDC
MM
Martin M.
Aug 13, 2025
Senior Back end developer for a YC backed fintech startup
AR
Alexander R.
Jun 15, 2025
Backend Developer (Node.js/Python) with GPT-4 API Experience for Baby Sleep App
Perfect communication, delivered on time, and the result was outstanding. I can't recommend this team highly enough!
AM
Afshin M.
Jan 21, 2025
Experienced .NET MAUI Mobile Application Developer
I wanted to take a moment to commend you for the exceptional work you’ve done on this project. Your dedication, attention to detail, and innovative approach have truly made a difference.
The results you’ve delivered have not only exceeded expectations but also showcased your ability to tackle challenges with professionalism and creativity. Your contributions are greatly appreciated and have had a positive impact on our project.
The results you’ve delivered have not only exceeded expectations but also showcased your ability to tackle challenges with professionalism and creativity. Your contributions are greatly appreciated and have had a positive impact on our project.
About Dmitrii
Full Stack Developer | Salesforce Development Web Dev CRM | React PM
100%
Job Success
Valencia, Spain - 3:11 pm local time
Custom Web Applications, Enterprise Cloud Architecture, and Seamless Salesforce Integration.
Looking for a production-ready digital product, a robust SaaS platform, or an advanced Web-to-Salesforce ecosystem that won’t slow down your team, crash under data loads, or require a complete rebuild in 6–12 months?
Our team brings elite Full Stack Developer expertise combined with 9x Certified Salesforce Architecture skills to design, build, and optimize complete business solutions. We bridge the critical gap between modern web applications (React, Node.js, Python) and enterprise-grade CRM automation.
Whether you need a scalable custom SaaS platform built from scratch or a complex Salesforce architecture deeply integrated with external web apps and third-party APIs, we build for real high-load production environments.
🏆 Our Agency at a Glance
With 10+ years of agency experience, 250+ projects delivered to production, and 15,000+ development hours, we align technical execution with business goals. As a versatile Full Stack Developer team, we own the entire lifecycle of your product — from frontend pixel-perfection and UI/UX to complex backend heavy lifting, cloud infrastructure, and real-time CRM synchronization.
Average business impact for our clients:
• 45–65% faster application load times and web page rendering.
• 30–50% reduction in manual operations through smart web & CRM automation.
• 40% faster reporting execution, data synchronization, and API response times.
• 35–50% fewer post-launch bugs and lower technical debt growth.
🚀 Core Expertise & Services
📌 1. Full Stack Development (Web, Mobile & SaaS)
• Frontend Engineering: Interfaces built with React, JavaScript, TypeScript, HTML5, CSS3. Clean code, reusable components, and optimized state management.
• Backend & API Architecture: Secure, scalable backend systems built with Python (Django, FastAPI), Node.js, and RESTful/GraphQL APIs.
• SaaS & Fintech Products: Transaction systems, admin panels, data-driven dashboards, financial charts, and landing page optimization with SEO.
• Mobile Development: Cross-platform iOS/Android apps using React Native with shared logic from your web ecosystem.
• AI & Data Integration: Embedding AI models (GPT dashboards, LLMs), intelligent UI flows, chatbots, and automated analytics into web and mobile platforms.
📌 2. Salesforce Ecosystem & Enterprise Integration
• Custom Salesforce Engineering: Custom Apex business logic, Advanced Flow automation, custom objects, and high-performance LWC (Lightning Web Components).
• Web-to-CRM Integrations: Secure REST/SOAP, OAuth/OAuth2 integrations for flawless, real-time data sync between custom Full Stack apps and Salesforce.
• Experience Cloud Portals: Customer-facing portals blending custom frontend UX with Salesforce data stability.
• Large Data Volumes (LDV): Database optimization, indexing, data archiving, and sharing model configuration.
📌 3. DevOps, Security & Cloud Infrastructure
• Cloud Infrastructure: Architecting secure, scalable environments on AWS, GCP, and Heroku.
• CI/CD Pipelines: Automated deployments for web infrastructure (Docker, GitHub Actions) and Salesforce (SFDX, Copado).
🔧 Our Delivery Process
Discovery & Analysis: Defining goals, user flows, and constraints to design a scalable architecture (aligning React/Python/Node.js with Salesforce Apex/LWC).
Architecture & Planning: Designing database models, backend services, and API layers before writing code.
Unified Development: Full Stack workflows to build cleanly documented, maintainable code where web apps and CRM work as a single organism.
QA & Performance Tuning: Validating stability, security compliance, API uptime, and performance under peak data loads.
Launch & Optimization: Continuous integration, typically improving system efficiency by 35–45% within 90 days.
💡 Proven Production Results
• 99.98% API & Integration Uptime maintained in production.
• Up to 2.5× higher system throughput under heavy traffic surges.
• 52% reduction in manual data handling via custom automation.
• Up to 40% savings in cloud infrastructure waste and technical debt.
🌎 Industries We Support
🏥 Healthcare | 💰 FinTech | 📊 SaaS & Enterprise B2B | 🛒 eCommerce | 🤖 AI, Data & EdTech
👑 Leadership & Communication
I serve as a Technical Project Manager, leading our Full Stack engineers and certified Salesforce developers to ensure predictable delivery from MVP to enterprise scale.
Why clients trust us: We hold a 100% Job Success Score and Top Rated Plus status with 55+ long-term clients. I take full ownership of your architecture — whether orchestrating complex Full Stack setups, managing cloud infrastructure, or aligning Salesforce configurations - ensuring stable, predictable releases.
📞 Need a technical leader who owns the entire system architecture from frontend to CRM? Let's connect for a brief discovery call!
Steps for completing your project
After purchasing the project, send requirements so Dmitrii can start the project.
Delivery time starts when Dmitrii receives requirements from you.
Dmitrii works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery & Requirements Review
Client shares project details, goals, scope, and any existing materials. I review everything and align on expectations, timeline, and deliverables.
Review & Revisions
Client reviews the work. I apply agreed revisions and fine-tune the final output.