Hire the Best C21 Systems C21 Specialists

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Christian G.

Glendale, California

$70/hr
4.9
64 jobs

I help U.S. businesses navigate SMS approval, deliverability, and compliance requirements - reducing the risk of carrier rejections, blocked traffic, and regulatory issues. I specialize in A2P SMS compliance and deliverability, including 10DLC registration, Toll-Free Verification (TFN), and TCPA/CTIA consent audits, as well as diagnosing carrier-level delivery problems. My work focuses on aligning SMS programs with current carrier and regulatory expectations so they can operate and scale responsibly in the U.S. market. If your messages are being rejected, filtered, or delayed - or you’re unsure whether your consent flow and use case will withstand carrier or legal review—I can help assess and correct the underlying issues. What I Do • 10DLC brand & campaign registration (new submissions, rejections, reclassifications) • Toll-Free Verification (TFN) setup and resubmissions • TCPA / CTIA compliance audits (opt-in flows, disclosures, opt-out handling) • SMS deliverability diagnostics (carrier filtering, content flags, throughput limits) • Platform-specific guidance (Infobip, Twilio, GoHighLevel, ClickSend, SimpleTexting) • Compliance-aware SMS automation (webhooks, triggers, rate-limiting, quiet hours)

  • SMS
  • Lead Generation
  • Mobile Marketing
  • Compliance Consultation
  • Regulatory Compliance
  • Mobile Marketing Automation
  • Twilio
Antonitte N.

Naga City, Philippines

$10/hr
5.0
10 jobs

• With 13+ years work experience in a multi-national company engaging in biotechnology and healthcare equipment manufacturing • Graduate of Engineering with practiced Engineering Documentation skills • Supervisory experience in Order Processing System ▪︎ Proven experience in customer service, handling inquiries, concerns, and client support efficiently, Handling Requests for Quotations RFQ's & Preparing Price Quotes, Inside Sales & Quote Coordinator • Topnotch experience in Inventory Control Management • Well-rounded in premium management softwares such as MS Navision, MES Hydra, MS Business Central, etc ▪︎ Bill of Materials (BOM) Controller ▪︎ Executive Assistant to the CEO, managing emails, calendar, meeting, Following up on key projects and ensuring deadlines are met.

  • Order Processing
  • Inventory Plugin
  • Data Entry
  • Lead Generation
  • Customer Support
  • Email Marketing
  • Email Management
  • Request for Quotation
  • Bill of Materials
  • Customer Service
  • ERP Software
Jose M.

Heredia, Costa Rica

$75/hr
5.0
213 jobs

I specialize in VoIP solutions with a focus on RingCentral (EX & CX) and Zoom (Phone & CC) project implementation and ongoing support. As a subject matter expert in the field, I work with businesses of all sizes to streamline communication systems, resolve complex technical challenges, and deliver seamless transitions to cloud-based telephony. Here's what you can expect when working with me: Deep Roots in VoIP: I'm not just certified; I'm passionate about what I do. With experience in RingCentral, Avaya, Zoom and Vonage, I'm well-versed in the intricacies of these platforms both in its UCaaS and CCaaS versions. Your Time Matters: I understand that every second counts in your business. That's why you can rely on me for prompt responses and effective solutions. Who I Serve: From small startups to large enterprises, I've had the privilege of assisting businesses of all sizes. My expertise spans various industries, including law firms, universities, fitness, and finance, to name a few. Here is a list of the most common tasks I perform within a VoIP platform: Call queues / Auto Attendant - IVR Call Forwarding / Call Routing Voicemail Setup / Custom Answering Rules Porting / User setup / Limited extensions SMS Automation** (10DLC) Multi Site Call logging expert / Audit trail Announcement / Audio greetings - Voice over Desk Phone Provisioning I'm here, ready to be your partner in enhancing your communication systems. Reach out to me here on Upwork and let's start a conversation, looking forward to understanding your unique needs and finding the perfect solution for you!

  • Call Center Management
  • Business with 100-999 Employees
  • Phone Support
  • VoIP PBX
  • System Administration
  • System Configuration
  • VoIP
  • Telecommunications Engineering
  • IVR Software
  • Telephone System
  • RingCentral Glip
  • Avaya
  • VoIP Software
  • VoIP Administration
  • Technical Support
  • PBX
Kyle Gabriel C.

Cavite City, Philippines

$18/hr
5.0
2 jobs

I help ecommerce and DTC teams run smoother customer operations by building scalable systems, standardizing processes, and keeping support teams accountable to measurable outcomes. Most recently I was CS Operations Manager for a US-based ecommerce operation running 20+ consumer gadget brands on a shared Zendesk Enterprise instance. I owned Zendesk configuration, macro standardization, SLA monitoring, agent performance and QA, omnichannel routing, knowledge base and AI agent setup, and workflow automation across CS and ops. Before that, two years at Amazon processing 500-1,000 investigation cases weekly under strict SLA and accuracy standards, plus an Operations Manager role at an AI content brand where I built workflows, SOPs, ManyChat automations, and social listening systems. What I can help you with: - Zendesk setup: macros, triggers, views, SLA config, omnichannel routing - SOP creation and documentation (Notion, Google Docs) - Agent performance tracking and QA systems - Workflow and email automation (Google Apps Script, Zapier, Klaviyo) - Knowledge base and AI agent setup - CRM cleanup, data QA, reporting dashboards - Process documentation and clean handoffs Typical deliverables: Zendesk audit reports, macro libraries, SOP docs, agent performance dashboards, workflow maps, automation scripts, cleaned data sheets with change logs. How I work: - Clarify scope and success criteria first - Accuracy-first with QA notes and change logs - Structured documentation and clean handoffs - Reliable async communication in remote teams

  • Data Analysis
  • Python
  • Online Research
  • Lead Generation
  • Web Scraping
  • Data Cleaning
  • Tech & IT
  • Business Operations
  • Sales Operations
  • CRM Software
  • QA Management
  • Case Management
  • Data Management
  • Notion
  • Google Sheets
Jon Paul D.

Mabalacat City, Philippines

$20/hr
5.0
13 jobs

I help businesses build, optimize, and manage enterprise-grade contact center solutions using RingCentral and NICE CXone. With 8,000+ hours worked and $100K+ earned on Upwork, I specialize in designing reliable IVR systems, intelligent call flows, routing logic, and customer support automation for both small businesses and large enterprises. What I Can Help You With: ✔ RingCentral UCaaS & CCaaS setup and administration ✔ NICE CXone / InContact development and support ✔ IVR and call flow design ✔ Studio scripting and automation ✔ Omnichannel customer support solutions ✔ API integrations and workflow automation ✔ Technical troubleshooting and platform support ✔ Contact center optimization and reporting ✔ Post-implementation support, maintenance, and system optimization Why Clients Work With Me: ✔ Certified and experienced contact center engineer ✔ Strong communication and project ownership ✔ Fast problem-solving and reliable delivery ✔ Able to manage projects from planning to deployment ✔ Ongoing support available after implementation I focus on building scalable, user-friendly customer experience solutions that improve efficiency and customer satisfaction. Let’s discuss how I can help your business.

  • Business with 10-99 Employees
  • Business with 100-999 Employees
  • Desktop Support
  • NICE
  • VoIP Administration
  • VoIP Software
  • inContact
  • Call Center Management
  • Avaya
  • Implementation
  • Implementation Plan
  • RingCentral Glip
  • Dialpad
  • Back-End Development
  • Front-End Development
Steven L.

Santa Monica, California

$75/hr
5.0
192 jobs

SMS Marketing & 10DLC Expert | 10+ Years | High-Volume Campaigns | Compliance | Fast Setup I help businesses set up, run, and scale SMS campaigns — and make sure they're compliant with the carrier rules that determine whether your messages actually get delivered. 10+ years in mobile messaging. Millions of messages sent monthly. End-to-end coverage from strategy and platform setup to 10DLC registration and compliance. ──────────────────────────────────────── 📋 10DLC COMPLIANCE & REGISTRATION I run an SMS marketing and communications company based in the US. 10DLC compliance, registration, and approvals aren't a side service for me — they're core to what I do. I'm not learning the rules from a blog post. I'm dealing with carrier decisions, aggregator updates, and rule changes in real time. When things shift — and they shift often — I already know about it. THE PROBLEM MOST BUSINESSES DON'T SEE COMING Getting rejected is frustrating. Not knowing why is worse. Some campaigns get approved but messages are still blocked because the setup isn't actually compliant end to end. I've gotten campaigns approved that others couldn't get through — and my reviews speak to that directly. I work fast. I know where the friction points are, how carriers and aggregators actually interpret the rules, and how to structure registrations that hold up. What I handle: ✔ 10DLC brand & campaign registration ✔ Toll-Free number verification ✔ Short code compliance ✔ Blocking & filtering — diagnosis and resolution ✔ Compliance audits for existing setups ✔ Opt-in language & compliance documentation ✔ Twilio, GoHighLevel, Telnyx, Simplewire, Plivo, and other major aggregators Note on high-risk traffic: For carrier-flagged categories like cannabis, loans, and adult content, I can provide expert guidance on the current environment and your realistic options, though I can't guarantee specific outcomes. Feel free to reach out with your situation. Please note that my posted rate is if I am providing the SMS service through my company. If you need consulting with another provider my rate is $275 an hour. I also offer 30 min consults for $175. ──────────────────────────────────────── 📱 SMS MARKETING CAMPAIGNS From a single launch campaign to an always-on high-volume program, I handle strategy, execution, and everything in between. ✔ Campaign strategy, setup & execution ✔ Platform access & managed sending ✔ Mobile number lookup & list scrubbing ✔ API & integration support including Zapier ✔ Deliverability monitoring & reporting ✔ High-volume SMS at wholesale rates FAST-TRACK SETUP AVAILABLE For compliant, non-high-risk campaigns: platform access, number provisioning, and everything needed to start sending in 48 hours. Premium service, priced accordingly — ideal for businesses that need to move fast without cutting corners on compliance. Industries served: E-commerce & Retail · Real Estate & Property Management · Media & Publishing Health & Wellness · Financial Services · Personal Services · Home Services Education & Training · Restaurants & Events · Music, Film & TV · Auto ──────────────────────────────────────── Feel free to reach out with questions or to discuss your project. Happy to talk through what you're building and whether I'm the right fit. Looking forward to working with you! Thanks, Steve

  • Lead Generation
  • Sales & Marketing
  • Mobile Ad Campaign
  • Mobile Marketing
  • Customer Engagement
  • Regulatory Compliance
  • SMS Gateway
  • Mobile Marketing Automation
  • SMS
  • Mobile Advertising
  • Compliance Consultation
  • Loyalty Marketing

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