OTC Backend System Development with API Integration

@LiveExperts

Hello, My name is Mirza and as the head of Live Experts, I have built a team of outstanding engineers and developers perfectly equipped to tackle your project. With our deep understanding of Backend Development, Security, and Software Architecture, we are poised to automate your OTC operations smoothly and efficiently. We are intimately familiar with the tech you require like API integration with Binance P2P Merchant API, NPP for fiat payment rails, Sumsub for KYC/KYB/AML. Additionally, our decade-long experience in software development and sound knowledge of databases and APIs would enable us to fully leverage these third-party systems via their APIs while ensuring integrity, efficiency, and security in their operations. Our expertise in building automation tools will make us a fantastic fit for this project as we can proficiently handle features such as order execution automation, payment settlement automation, KYC checks automation and reconciliation automation. Furthermore, our astute attention to detail & adaptability will play crucial roles in deploying your system on franchise/white-label ready multi-tenant environment with robust data isolation & brand configurations. Thanks!

@irsolutions

Having over 10 years of experience in web and mobile development, I understand the complexities involved in building a production-grade OTC backend system with API integration like the one you described. Your project requirements call for seamless automation of order execution, payment settlement, KYC checks, and reconciliation, all while ensuring multi-tenant readiness. In the realm of fintech, my track record includes successfully delivering projects that involve API integrations, automated processes, and compliance measures akin to what your project demands. With my expertise in blockchain and FinTech solutions, I am well-equipped to tackle the challenges your project presents. If you are looking for a seasoned professional to bring your OTC backend system to life, I am here to help. Let's discuss how we can work together to achieve your project goals effectively and efficiently. Looking forward to the opportunity to collaborate with you on this exciting project.

@ZohaibRoy

⭐⭐⭐⭐⭐ Build a Robust Backend System for OTC Operations with Binance Integration ❇️ Hi My Friend, I hope you are doing well. I've gone through your project details and see you're looking for a backend system for OTC operations with Binance integration. You don't need to look any further, as Zohaib is here to help you! My team has successfully completed 50+ similar projects for backend systems. I will automate order execution, payment settlement, KYC checks, and reconciliation efficiently within your budget. ➡️ Why Me? I can easily create your backend system as I have 5 years of experience in API integration, database management, and backend development. My expertise includes working with Binance API, NPP, and Sumsub, ensuring that I can meet your project needs effectively. I also have a strong grip on security and compliance measures, which will be crucial for your system. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. I'm looking forward to discussing this with you! ➡️ Skills & Experience: ✅ API Integration ✅ Backend Development ✅ Database Management ✅ Payment Processing ✅ KYC/AML Compliance ✅ Webhook Management ✅ Multi-Tenant Architecture ✅ Error Handling ✅ Security Best Practices ✅ Ledger & Reconciliation ✅ User Role Management ✅ Documentation & Runbooks Waiting for your response! Best Regards, Zohaib

@gigadevca

Thank you for posting the project. I am a U.S. based software development consultant with years of experience working for Fortune 500 tech companies in the Silicon Valley. I have a team of more than 30 web and mobile app developers working for me. We deliver end-to-end software solutions to our clients globally. I would like to discuss your project with you in detail. Once we have taken down the requirements and documented them, I will be happy to provide an exact estimate and timeline. Looking forward to hearing from you. Thanks. — Asad Jahangir The Coding Company LLC

@tangramua

Dear helenzengambit,   We carefully studied the description of your project and we can confirm that we understand your needs and are also interested in your project. Our team has the necessary resources to start your project as soon as possible and complete it in a very short time.   We are 25 years in this business and our technical specialists have strong experience in Ruby on Rails, Software Architecture, Ruby, Blockchain, Backend Development, Security, API Development, Binance, Payment Processing and other technologies relevant to your project.   Please, review our profile https://www.freelancer.com/u/tangramua where you can find detailed information about our company, our portfolio, and the client's recent reviews.   Please contact us via Freelancer Chat to discuss your project in details.    Best regards, Sales department Tangram Canada Inc.   

@ykarora26

Hello there, Let's come to on a same page and start asap With my 14+ years of diligent experience in backend development and extensive knowledge in PHP, MySQL, Laravel and more, I am confident I have the specialized expertise demanded by your OTC Backend System Development project. Your desire to automate order execution, payment settlement, KYC checks and reconciliation, aligns perfectly with my proven abilities in crafting fast, secure and scalable digital solutions. One of the reasons why I feel I’d be an excellent fit is my familiarity with API integrations such as Binance P2P Merchant API – a core requirement for your system. Building customer-facing code while maintaining seamless backend operations is where my talents thrive. Moreover, my proficiency in Sumsub will ensure smooth automation of identity/risk checks. Together with you, we can develop a high-functioning operator console with views on orders, payments, reconciliation and more; implement double-entry journal for daily reconciliation; design a comprehensive Franchise/White-Label Kit and establish firm security measures to meet all AUSTRAC requirements. Together we can build an automated OTC system that exceeds expectations and delivers tangible results – within your timeline and budget. Best regards

@Engumer480

Hello, Leveraging my recent experience in integrating APIs for financial transactions and compliance checks, I am prepared to deliver a robust backend system for your OTC operations using Binance P2P, NPP, and Sumsub. I can start immediately, ensuring automation, security, and multi-tenant capabilities to support your franchising objectives efficiently. Best regards, Umer S.

@iosifpeterfi

Hi — Iosif here, security-first backend & DevOps architect (15+ yrs, multi-tenant financial platforms, AML/KYC automations, and exchange integrations). I can deliver a production-grade OTC automation backend with full connectors, reconciliation engine, and white-label tenant kit exactly as scoped. Approach • Binance P2P Connector: Ads & pricing bot, inventory/spread rules, full order state machine, secure callback flow, evidence bundle builder. • NPP Integration: Idempotent pay-in consumer, payout signer, retries/backoff, exception queue, daily ledger reconciliation vs statements. • Sumsub Integration: Applicant flow, webhook tiering (L1–L3), AML flags, risk snapshots. • Ledger & Recon: Double-entry journal (append-only), nightly matching & CSV audit exports. • Operator Console: Orders/Payments/KYC/Rules dashboards, RBAC (admin/operator/finance/compliance/franchisee), two-person control. • Multi-Tenant Franchise Kit: Tenant isolation, one-click bootstrap (brand/domain/fees/limits/keys), franchisor KPIs, revenue-share reporting. • Security/Compliance: PII encryption (KMS/rotation), IAM hardening, webhook signature checks, AUSTRAC-friendly retention/monitoring. • Docs & Runbooks: OpenAPI contracts, env matrix, SOPs, incident playbooks. Price Full implementation (MVP → production): $22,000–$32,000 USD, depending on depth of franchise features and console complexity. A phased start (core connectors + ledger + minimal console): $12,000–$16,000 USD.

@mahig47

Hello! As per your project post, you’re looking to develop an OTC Backend System it's a a production-grade, automation-driven backend integrating Binance P2P, NPP (fiat rails), and Sumsub (KYC/KYB/AML). The goal is to build a multi-tenant, franchise-ready system that automates order execution, payments, KYC checks, reconciliation, and compliance reporting all while using Binance’s native front end for customer-facing operations. My focus will be on delivering a secure, modular backend infrastructure featuring: automated Binance P2P trade lifecycle management, real-time NPP payment reconciliation with retry logic, Sumsub-based KYC tiering and AML flag handling, a multi-tenant operator console with RBAC and two-person approval controls, and immutable double-entry ledgers with daily reconciliation and exception queues. The system will ensure audit-grade reliability, data isolation, and compliance readiness for franchised OTC operations. I specialize in Node.js (NestJS/Fastify), PostgreSQL, Redis, and AWS, with expertise in event-driven architectures, financial system reconciliation, and secure API orchestration. My focus will be on building a compliant, high-availability OTC backend that’s efficient, traceable, and ready for white-label deployment. Let’s connect to review your current integration assets (API keys, webhook schemas, and reconciliation rules) and outline the architecture for secure, multi-tenant operation. Best regards, Nikita Gupta

@annes01

This sounds like something I’d genuinely enjoy building. Your vision for automating OTC operations on Binance P2P and integrating robust compliance solutions aligns perfectly with my expertise in creating streamlined, cohesive backend systems. I have a proven track record in Ruby on Rails and API development, successfully delivering projects that enhance operational efficiency and ensure data security. Happy to outline how I would turn this plan into a working solution. Chat soon, Anne S

@VianRey1

Building a secure, scalable backend for OTC operations is no small feat-especially when seamless integration with Binance P2P, NPP payment rails, and Sumsub's KYC/KYB checks are all non-negotiable. I understand that your team needs a production-ready backend that not only handles complex API integrations but also maintains airtight security and regulatory compliance, all running smoothly behind the scenes. Here's how I can help: I'll architect and implement a robust backend in Ruby on Rails, unifying the Binance, NPP, and Sumsub APIs into a single, reliable workflow. You'll get a system that processes transactions in real-time, flags compliance issues instantly, and is ready for audit at any moment. My recent backend builds have consistently reduced manual intervention by over 80%, freeing teams to focus on growth. To get you there, I propose: 1. Initial requirements and architecture review 2. Agile development of core modules and API integrations 3. Rigorous testing and deployment, with full documentation What's your top priority: rapid deployment, regulatory compliance, or minimizing operational overhead? Let's discuss where to focus first.

@mengw3

With decades of experience in delivering top-notch projects, I'm confident that my expertise in API and backend development coupled with keen attention to security details will be a game-changer for your OTC Backend System project. I am ranked first in the ongoing cryptocurrency (BNB and ETH) quantitative trading competition, which is the best proof of my ability. As a Full-Stack expert, I am equally comfortable handling fronten、backend and can offer valuable insights for your operator console. The multi-tenant franchise/white-label kit you envision is where my skills in maintaining data security and separation synergize to add value, down to the smallest details like unique reference matching. Coupled with a strong focus on long-term business growth and innovation, I am eager to contribute my expertise to this challenging project. Let's discuss how we can build something extraordinary together! Qinglei wang