You will get a Retell AI voice agent for inbound calls and qualification
Top Rated
Project details
I build AI voice agents that answer your inbound calls, qualify the caller, and hand a warm file to your team. Not a chatbot with a phone number: a low-latency agent that holds a real conversation, handles interruptions, and knows when to stop asking and transfer.
I work with Retell AI and Vapi, backed by n8n and Python for everything behind the call. That means the agent doesn't just talk, it books the appointment, updates your CRM, and logs a full transcript of every conversation.
What you get: a custom prompt and knowledge base trained on your business, live test calls before handover, and a working system you can edit yourself afterwards.
Over 150 automation and data projects delivered, Top Rated on Upwork, and I've built these agents for live financial services operations where the call quality and the compliance trail both have to hold up.
I work with Retell AI and Vapi, backed by n8n and Python for everything behind the call. That means the agent doesn't just talk, it books the appointment, updates your CRM, and logs a full transcript of every conversation.
What you get: a custom prompt and knowledge base trained on your business, live test calls before handover, and a working system you can edit yourself afterwards.
Over 150 automation and data projects delivered, Top Rated on Upwork, and I've built these agents for live financial services operations where the call quality and the compliance trail both have to hold up.
Purpose
BusinessIndustry
Agriculture, Animals & Pets, Architecture & Interior Design, Arts & Design, Audio Services, Beauty & Cosmetics, Biotech, Business Services & Consulting, Construction, Cybersecurity, Data Analytics, Ecommerce, Education, Energy, Engineering, Environmental, Events Planning, Fashion & Apparel, Financial Services, Food & Beverage, Gaming, Government & Public Sector, Hardware & Electronics, Legal, Lifestyle, Logistics & Supply Chain Management, Manufacturing & Storage, Marketing & Advertising, Media & Entertainment, Medical & Pharmaceutical, Music, Nonprofit, Photography, Real Estate, Religion & Spirituality, Retail & Wholesale, Software, Sports & Fitness, Telecommunications, Transportation & Automotive, Travel & Tourism, Video Services, Wellness, Writing & PublishingLanguage
EnglishWhat's included
| Service Tiers |
Starter
$100
|
Standard
$250
|
Advanced
$450
|
|---|---|---|---|
| Delivery Time | 1 day | 3 days | 7 days |
Scriptwriting | |||
Summary Report | |||
Lead List | - | - | - |
Optional add-ons
You can add these on the next page.
Outbound calling setup
(+ 3 Days)
+$200
Spanish/or any other language voice agent
(+ 2 Days)
+$150Frequently asked questions
26 reviews
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SK
Scott K.
Aug 1, 2026
Changes to existing retell receptionist
EXCELLENT RESOURCE. Clearly knows the technologies well and worked closely with USA hours and helped suggest and make important changes. I am not experienced in this, and Mohsin's patience and understanding was incredible.
BO
Bobby O.
Jul 30, 2026
Hourly work
I have worked with Mohsin for over a year. He is one of the best developers out there! He worked countless hours, reached out and replied quickly, addressed concerns, and delivered quality on every project.
gk
glenn k.
Jul 29, 2026
Deep Web Scraper & Smart Data Miner for Industry Leads
RW
Ruby W.
Jun 7, 2026
api help
RW
Ruby W.
Apr 22, 2026
putting listing in the back end
About Mohsin
AI Voice Agents & Automation | Retell, Vapi, n8n | CRM Automation
100%
Job Success
Karachi, Pakistan - 12:56 pm local time
Almost every automation I get called in to fix has the same problem. Not a strategy problem. A reliability problem. The workflow runs, the node returns a 200, and three weeks later half the records never made it into the CRM. I build automations with the error handling, retry logic and logging that stop that happening - the part most no-code builds skip.
I am an AI automation expert with 4+ years in backend and API development, specializing in n8n, Make, Zapier, REST APIs, webhooks, CRM automation, AI agents and AI voice agents. When a build hits something the native nodes cannot do - a custom auth flow, a rate limited endpoint, pagination across a large dataset, data that needs real parsing - I write the code rather than telling you it is not possible.
I have built voice qualification pipelines for financial services clients where the agent routes qualified and disqualified callers down different paths and writes structured data straight into the CRM. I have built agent assist tools that surface live context to support reps mid-call. I have built CRM sync systems using direct API calls where the native integrations could not handle the schema, and lead pipelines running sourcing, sequencing, dedupe and reply detection end to end. These are not demos. They are systems running inside real businesses.
𝐖𝐡𝐚𝐭 𝐈 𝐁𝐮𝐢𝐥𝐝
𝘞𝘰𝘳𝘬𝘧𝘭𝘰𝘸 𝘈𝘶𝘵𝘰𝘮𝘢𝘵𝘪𝘰𝘯 - Multi-step workflows in n8n, Make and Zapier that connect the tools you already run. Lead comes in, gets enriched and scored, CRM updates, task is assigned, follow-up fires, all without anyone touching it. Built with error branches, retry logic and logging so failures surface immediately instead of dropping records silently.
𝘈𝘗𝘐 & 𝘚𝘺𝘴𝘵𝘦𝘮 𝘐𝘯𝘵𝘦𝘨𝘳𝘢𝘵𝘪𝘰𝘯 - REST and GraphQL integrations, webhook architecture, OAuth2 and key-based auth, pagination, rate limit handling, and custom Python and FastAPI services for the parts no-code cannot reach.
𝘊𝘙𝘔 𝘈𝘶𝘵𝘰𝘮𝘢𝘵𝘪𝘰𝘯 - Pipeline and stage automation, lead routing, deduplication, two-way sync between systems that do not talk to each other, and clean structured data instead of a storage dump nobody updates.
𝘈𝘐 𝘈𝘨𝘦𝘯𝘵𝘴 & 𝘊𝘩𝘢𝘵𝘣𝘰𝘵𝘴 - Agents built on OpenAI, Claude and Gemini for classification, extraction, drafting, support and internal tooling, with tool use and structured output rather than freeform text you have to clean up afterwards.
𝘈𝘐 𝘝𝘰𝘪𝘤𝘦 𝘈𝘨𝘦𝘯𝘵𝘴 - Inbound and outbound agents on Retell AI and Vapi that qualify callers, book appointments and route to a human when needed, wired into your calendar and CRM through a backend service that handles call state and post-call actions properly.
𝘓𝘦𝘢𝘥 𝘎𝘦𝘯𝘦𝘳𝘢𝘵𝘪𝘰𝘯 & 𝘖𝘶𝘵𝘳𝘦𝘢𝘤𝘩 - Sourcing and enrichment through Apollo, sequencing through Instantly, reply detection, bounce suppression and CRM sync, with the data hygiene that stops an outreach system degrading within weeks.
𝘋𝘢𝘵𝘢 𝘌𝘹𝘵𝘳𝘢𝘤𝘵𝘪𝘰𝘯 - JavaScript-heavy sites, GraphQL endpoints and login-protected portals, using direct API calls where available and browser automation only where genuinely needed.
𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐈 𝐒𝐞𝐫𝐯𝐞
Financial services and debt relief, agencies and consultancies, recruitment and staffing, e-commerce, SaaS companies, real estate, and any operations team drowning in manual process.
𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬 𝐈 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡
n8n, Make, Zapier, Python, FastAPI, Retell AI, Vapi, Twilio, OpenAI, Claude, Gemini, GoHighLevel, HubSpot, Pipedrive, Attio, Clay, Apollo, Instantly, Supabase, PostgreSQL, Airtable, Google Sheets, Google Cloud, Next.js, webhooks and REST APIs.
𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞
I do not ship fragile builds. Every system gets tested against real edge cases before it goes live: bad data, failed writes, timeouts, awkward inputs. I map the flow before building it, I build the error handling before you ask for it, and I hand over documentation so your team can maintain what I built. Clients most often mention clear communication and reliability, which mostly means I flag problems early rather than late.
𝐈𝐟 𝐲𝐨𝐮 𝐧𝐞𝐞𝐝 𝐚𝐧 𝐧𝟖𝐧 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫, 𝐌𝐚𝐤𝐞 𝐬𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐬𝐭, 𝐀𝐏𝐈 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 𝐞𝐱𝐩𝐞𝐫𝐭, 𝐂𝐑𝐌 𝐚𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 𝐬𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐬𝐭, 𝐀𝐈 𝐚𝐠𝐞𝐧𝐭 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐨𝐫 𝐀𝐈 𝐯𝐨𝐢𝐜𝐞 𝐚𝐠𝐞𝐧𝐭 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫, 𝐈 𝐜𝐚𝐧 𝐛𝐮𝐢𝐥𝐝 𝐢𝐭.
💬 Send me a message with:
▪️ What your business does
▪️ The process you are doing manually right now
▪️ The tools and CRM you already use
▪️ What you want automated
I will review your setup and tell you honestly what is worth automating, what is not, and what the right build actually looks like.
Steps for completing your project
After purchasing the project, send requirements so Mohsin can start the project.
Delivery time starts when Mohsin receives requirements from you.
Mohsin works on your project following the steps below.
Revisions may occur after the delivery date.
Scope and script
I confirm your call flow, qualification criteria, and what happens on transfer, then write the agent prompt and knowledge base.
Build the agent
I configure the voice agent, set the voice and latency behaviour, and connect your phone number.