HIPAA-aware AI voice agents for healthcare — built on Synthflow, Retell AI and ElevenLabs. I turn missed calls into booked appointments with 24/7 reception, appointment booking and CRM automation that capture every inquiry and route it into your real systems.
I specialize in production voice agents (Synthflow, Retell AI, Voiceflow, ElevenLabs) wired into your real systems — GoHighLevel, HubSpot, EHR / booking tools, Twilio telephony, plus AI chat & WhatsApp assistants (ManyChat, WATI) — with OpenAI / GPT-4o driving the conversation and n8n / Make orchestrating the workflow end to end.
Healthcare is where I'm strongest. Recent work includes:
Patient growth & booking across a 55-clinic chiropractic network (Australia)
24/7 AI shift-coordination for UK NHS healthcare staffing
Bilingual (EN / ES) after-hours patient reception (Miami)
Inbound AI receptionists for dental & medical clinics
AI voice agent for medical consults (Synthflow + PracticeQ / EHR)
I design with compliance in mind: HIPAA-aware architecture, PHI minimization, audit logging, and clear medical-escalation rules — the AI never diagnoses or gives medical advice; it routes to your staff.
Beyond healthcare, I deliver the same voice + integration stack for clinics, agencies, startups, and appointment-driven service businesses.
What I deliver:
AI voice & chat agents: inbound / outbound calls (Twilio, VoIP), WhatsApp & web chat, FAQ, triage, appointment booking
Lead qualification, enrichment & conversion bots
Knowledge-base & RAG assistants (document / data retrieval, multi-agent)
AI automation for business operations (n8n, Make, Zapier) + API / webhook integration
CRM & calendar integration (GoHighLevel, HubSpot, Google Calendar)
QA & testing for conversation flows and backend logic
Backed by 8+ years in project management and backend development (JavaScript, Node.js, Express, serverless, Supabase), I own the full delivery cycle — architecture, conversation design, QA, deployment.
Let's build a voice agent that fits your business.
Message me to start)
API Integration
Full-Stack Development
n8n
Conversational AI
AI Agent Development
CRM Automation
Automated Workflow
OpenAI API
WhatsApp
HIPAA
Healthcare
AI Chatbot
ElevenLabs
HighLevel
HubSpot
Lead Management Automation
Machine Learning
Artificial Intelligence
Science & Medicine
Twilio API
Leonardo G.
La Libertad, El Salvador
$15/hr
4.9
123 jobs
🏆 Top Rated · 100% Job Success · 109 jobs · 7+ years · Google Cloud–certified (Professional Cloud Architect)
If your emails are landing in spam, your DNS is a mess, or you’re moving to Google Workspace and can’t afford downtime — I get it fixed properly and verify it’s actually landing in the inbox.
Most “SPF/DKIM/DMARC setups” stop halfway — the records exist but don’t align, so your mail still hits spam — or get flipped straight to enforcement and break your real email. I do it the right way, and I don’t stop until your mail reaches the inbox.
✅ Why clients work with me:
🏅 Google Cloud Professional Cloud Architect + Associate Cloud Engineer + Workspace Administrator certified — credentials most “email guys” simply don’t have
🎯 Top Rated with a 100% Job Success Score across 109 completed jobs
📧 Staged DMARC done right — I monitor your reports first and enforce only after every legitimate sender passes, so your real mail is never blocked
📥 I talk inbox placement, not vanity warm-up scores — verified with live headers + placement tests (MXToolbox, Mail-Tester, GlockApps, Google Postmaster)
🔁 Zero-downtime migrations to Google Workspace — from Microsoft 365, GoDaddy, Bluehost, Zoho, cPanel/IMAP — nothing lost
🌎 Fully bilingual (English / Spanish)
🛠️ What I can do for you:
• Fix emails landing in spam — SPF, DKIM, DMARC with proper alignment, verified
• Stage and enforce DMARC safely (p=none → quarantine → reject) for high-volume sending
• Build cold-email infrastructure (Instantly, Apollo, GoHighLevel) — domains, mailboxes, auth, warm-up
• Migrate your company email to Google Workspace with zero downtime
• Set up Google Postmaster Tools + ongoing monitoring so you never drift back to spam
⭐ Recent reviews:
“Leo was fast and knew his stuff. Great job and would definitely hire again!”
“Knowledgeable and responsive. Helped me diagnose my email issue and was easy to work with.”
📩 Send me a message with your domain and I’ll tell you exactly what’s wrong with your email — before you pay me a cent.
DNS
Google Workspace Administration
Email Deliverability
Gmail
Workspace
Spam Filter
Migration
Technical Support
Google
Google Workspace
Gemini for Google Workspace
Email Security
Cold Email
Email Campaign Optimization
Email Campaign Setup
Email Marketing Consultation
Email Marketing
Lead Generation
Nicole Daniela S.
San Cristobal, Venezuela
$10/hr
4.9
15 jobs
I help B2B companies scale their revenue by turnings cold/warm leads into qualified meetings on your calendar. As an Outbound Specialist, I combine strategic appointment setting with high-stakes inbox management and technical deliverability to ensure your campaigns actually reach decision-makers.
My focus is on system scalability, data integrity, and flawless execution. Whether it's managing high-volume B2B inboxes or mastering complex objection handling, I ensure zero lead leakage.
Expertise and Core Services
Technical Infrastructure & Deliverability: Expert management of domain activation across Azure, Microsoft 365, and Outlook ecosystems. I specialize in SPF, DKIM, and DMARC protocols to maintain high deliverability rates.
Lead & Appointment Setting: Professional handling of high-volume B2B outreach, optimizing lead-to-meeting workflows, and booking qualified discovery calls.
Tech Stack Mastery: Advanced proficiency in GoHighLevel, Instantly, Smartlead, Apollo, HubSpot, and Salesforce.
Bilingual Communication: Fully bilingual in English and Spanish with expertise in professional outreach for diverse global markets.
Let's scale your growth operations with technical precision.
Email Deliverability
Lead Nurturing
Microsoft Azure
Email Marketing
Cold Email
Technical Support
Jacob K.
Overland Park, Kansas
$75/hr
5.0
145 jobs
I Build GTM Systems That Generate Pipeline, Not Just Campaigns
Most companies don’t have a lead problem. They have a broken go-to-market system.
* Outbound isn’t connected to inbound
* Paid traffic doesn’t convert
* Attribution is unreliable
* Follow-up is inconsistent or manual
I build specialized, automated GTM systems that connect outbound, inbound, and lifecycle into a single engine. Since 2018, I’ve helped generate $12.5M+ in revenue by designing systems that consistently produce pipeline not just activity.
What I Build:
1. Outbound GTM Engines
* Cold email + LinkedIn systems built around real buying signals
* Targeting based on hiring trends, behavior, and intent
* Multi-touch sequences that feel personalized at scale
2. Automated Pipeline Infrastructure
* Lead capture > routing > follow-up > conversion
* CRM, outbound tools, and analytics fully connected
* No dropped leads, no manual gaps
3. Lifecycle & Monetization Systems
* Rich HTML newsletters and nurture flows
* Upsell, re-engagement, and retention sequences
* Built to drive revenue not vanity metrics
4. Full-Funnel GTM Integration
* SEO + content aligned with real demand signals
* Paid ads layered on top of proven segments
* Email + lifecycle maximizing every touchpoint
Most agencies sell channels.
I build the system that makes all channels work together at a fraction of the cost. Your outbound system becomes the foundation for everything else:
GTM is no longer marketing. It’s engineering.
The Gamma Growth Partners Framework:
* Data Layer → who you target (signals > lists)
* Messaging Layer → relevance + timing
* Distribution Layer → outbound, inbound, paid
* Conversion Layer → follow-up + lifecycle
* Optimization Layer → continuous iteration
Most companies are missing 2–3 of these layers.
That’s where pipeline breaks.
Recent Results:
* SaaS: 200+ users/month
* SEO Agency: 10+ opportunities/week
* Local Services: 20+ opportunities/week
* iOS App: +$20K MRR in 4 weeks
* Agency: $1.5M ARR in 90 days
Why Clients Work With Me
Most freelancers: Write templates, Pull lists, Press send
Most agencies: Sell disconnected services, Move slowly, Charge high retainers
I: Design the system, Build it end-to-end, Connect every channel, Optimize continuously
Stack Experience:
Clay, Pipedrive, HubSpot, Apollo, Instantly, Smartlead
Mailchimp, Klaviyo, Salesforce
GTM, GA4, SEO, paid ads, outbound infrastructure
If you reach out, I’ll break down:
* Where your GTM system is leaking revenue
* What signals you should actually be targeting
* A clear system to fix it
Sales & Marketing
Business Development
Automation
SaaS
Startup Consulting
Outbound Sales
Business Analysis
Omnichannel Marketing
Prospect List
Channel Prioritization
Strategy
List Building
Customer Service
Jawad H.
Xlendi, Malta
$53/hr
5.0
28 jobs
10M+ in pipeline generated. Most outbound doesn't fail on copy. It fails in the plumbing: burned domains, dirty data, lists that run once and rot. I build the plumbing. 400+ production automation workflows, 450+ outbound campaigns run end to end, and enrichment pipelines most freelancers rent tools to approximate.
Owning the outcome that matter. Meetings booked. Reply rate doesn't matter if it is not changing how your calendar looks.
What I build:
Sending infrastructure that survives. Lookalike domains, SPF/DKIM/DMARC, custom tracking domains, warmup, inbox rotation capped per box, auto-pause when placement dips. Your main domain never sends a cold email. Post-2024 Gmail/Yahoo rules, the metric that kills fleets is complaint rate, not bounce rate
Data systems, not lists. Apify + custom scrapers feeding waterfall enrichment, AI columns via Claude/GPT inside n8n where Clay's native providers hit their limits, verification APIs holding bounce under 2%, domain-match dedup against your CRM so you never cold-email an active customer.
Campaign execution. Sequences, reply detection, instant warm-reply flagging, calendar coordination. 450+ omni-channel outbound campaigns (cold email + linkedin + voice AI), 10,000+ automated outreach minutes/month live in production.
Stack: Clay, Heyreach, Smartlead, Emailbison, Prospeo, Revenuebase, Instantly, n8n, Apify, Apollo, Sales Navigator, Claude/GPT, HubSpot, GHL.
Background: 6+ years full-stack development, ex-CTO, ex-founder. The practical difference: when a tool caps out or a provider has no integration, I write the code. Most outbound freelancers assemble rented parts; I build the parts.
Honest note: cold outbound math doesn't work below $5k deal size, and anyone promising meetings in week one is selling spam. First replies typically land in 2–3 weeks; judge the engine at 60 days. I'll tell you upfront if outbound isn't your channel.
Outbound is an engine, not a campaign. Message me your ICP and current setup. I'll reply with a straight read on what's broken and what it would take, including whether you need me at all.
Artificial Intelligence
Machine Learning
n8n
Automation
API
API Integration
LLM Prompt Engineering
CRM Automation
Automated Workflow
Claude
Cold Email
Email
Lead Generation
B2B Lead Generation
LinkedIn
LinkedIn Lead Generation
Clay
Apollo.io
Prospect List
Warm Leads
Viet Anh T.
Hanoi, Vietnam
$68/hr
5.0
31 jobs
🏛️ 𝐀𝐥𝐩𝐡𝐚 𝐝𝐢𝐞𝐬 𝐢𝐧 𝐛𝐚𝐝 𝐢𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞.
Brilliant quantitative logic is worthless if your execution architecture bleeds capital under live-market pressure. I see it constantly: founders deploying systems that print money in backtests, only to watch them collapse in production because their MT5 terminals or TradingView webhooks aren't properly bridged to a high-performance backend.
I solve this. As a Quantitative Systems Architect, I build sub-millisecond Python execution vessels that turn fragile, isolated trading scripts into resilient, production-ready infrastructure.
With deep experience in financial market infrastructure, I specialize in Project Rescue and Scale-Up Architecture. I act as your hands-on Technical Partner: one single point of contact, strict engineering rigor, and absolute risk control.
━━━ 𝗪𝗛𝗔𝗧 𝗜 𝗕𝗨𝗜𝗟𝗗 ━━━
Algorithmic Trading & Execution Engines
Architecting institutional-grade automated systems natively across MT5 (MQL5) and TradingView (Pine Script v6).
Building sub-millisecond Python execution vessels, utilizing WebSockets and ZeroMQ to route signals instantly from your Master API to the broker.
Trade lifecycle management: precise order chunking, slippage caps, and dynamic trailing logic.
Fintech SaaS & Prop Firm Infrastructure
Designing high-concurrency B2B dashboards and server-side risk management microservices (Next.js, FastAPI, MetaApi).
Enforcing strict Prop Firm drawdowns, daily loss locks, and automated equity syncing to protect capital from emotional trading.
Bridging traditional frontend terminals (MT5/TV) with robust Python backends.
Broker API & Data Pipelines
Direct integration with Rithmic (R-API+), Binance, Bybit, and FIX protocols.
Structuring historical MBO, tick-level, and order-book data ingestion pipelines (e.g., Databento) for accurate backtesting and ML-feature extraction.
━━━ 𝗪𝗛𝗬 𝗙𝗢𝗨𝗡𝗗𝗘𝗥𝗦 & 𝗤𝗨𝗔𝗡𝗧𝗦 𝗪𝗢𝗥𝗞 𝗪𝗜𝗧𝗛 𝗠𝗘 ━━━
I Understand Both Software Engineering and Quantitative Finance
I speak your language. I don't just understand basic SL/TP; I understand Level 3 Order Books, Liquidity Voids, Lock-free Ring Buffers, and Structural Risk Validation. I don’t approximate your logic; I implement your mathematical models exactly as defined.
Exact Logic, No Guesswork
I build systems from the ground up with strict determinism. Every rule is coded, logged, and tested. If a condition is ambiguous, I clarify it before execution to ensure the system behaves 100% as expected under live-market stress.
Zero Hand-Holding Required
As your Fractional CTO, I don't just write code blindly. I audit your architecture, tell you exactly what is causing latency or system failures, and execute the fix.
━━━ 𝗧𝗘𝗖𝗛 𝗦𝗧𝗔𝗖𝗞 & 𝗣𝗟𝗔𝗧𝗙𝗢𝗥𝗠𝗦 ━━━
Languages: Python, C++, MQL5, Pine Script, TypeScript.
Trading Platforms: MetaTrader 5 (MT5), TradingView.
APIs & Data: Rithmic (R-API+), MetaApi, Databento, REST/WebSockets, FIX Protocol.
Backend & SaaS: FastAPI, Next.js, ZeroMQ, Docker, Microservices Architecture.
🚀 Let's build something that scales.
Send me your trading strategy, MT5 setup, or SaaS architecture plan. I will tell you exactly where the bottlenecks are and outline a strategic roadmap to fix them.
━━━
Keywords: Fractional CTO | Quantitative Finance Architect | Enterprise SaaS Architecture | Algorithmic Trading Systems | MT4 | MT5 | MQL5 | NinjaTrader 8 | NT8 | C# | TradingView | Pine Script | Prop Firm Tech Stack | Binance API | CCXT | Crypto Exchange Integration | Blockchain Developer | Web3 Infrastructure | DeFi Protocol | Payment Gateway Integration | Node.js | Next.js | Python | High-Concurrency Backend | Microservices | MetaApi | PCI-DSS | Project Rescue | High-Agency Developer
Forex Trading
Quantitative Finance
MetaTrader 5
NinjaTrader
TradingView
Python
FinTech
Financial Software
SaaS Development
Blockchain Architecture
Crypto Exchange Platform
Smart Contract Development
API Integration
Pine Script
MQL 5
Trading Strategy
C#
Blockchain, NFT & Cryptocurrency
AI Trading
Financial Trading
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