Freelance AI Chatbot Developers in United StatesFreelance AI Chatbot Developers in United States
ProjectsPeople
Nikol Hayes's avatar
Nikol Hayes
proSan Francisco, USA
AI Campaign Assets + Agents for DTC Growth
    $100k+
    Earned
    21x
    Hired
    5.0
    Rating
    301
    Followers
TOP_INDEPENDENT

Top

IDEOGRAM_EXPERT

Partner

+1
AI Campaign Assets + Agents for DTC Growth
Cover image for Abstract AI Chat: Learn Blockchain with Interactive AI & Docs
Abstract AI Chat: Learn Blockchain with Interactive AI & Docs
3
114
Cover image for Kevin from Home Alone Telegram Bot
Kevin from Home Alone Telegram Bot
1
80
Cover image for Elysian DAO DeFi App
Elysian DAO DeFi App
0
40
Cover image for Chad: The Ultimate Crypto Degen Bot
Chad: The Ultimate Crypto Degen Bot
1
84
AI Chatbot Developer(10)
Trey Vititoe's avatar
Trey Vititoe
proTallahassee, USA
Web Designer/Developer TreyVititoe.com
    $5k+
    Earned
    3x
    Hired
    5.0
    Rating
    83
    Followers
PAGEDECK_EXPERT

expert

Web Designer/Developer TreyVititoe.com
Cover image for Walter: An All-in-One Travel Companion App
Walter: An All-in-One Travel Companion App
4
35
Cover image for SEO Optimization for Ten Speed's Blog
SEO Optimization for Ten Speed's Blog
0
1
Cover image for Automated Testing Setup for Bolt.new App
Automated Testing Setup for Bolt.new App
0
3
Cover image for Baja Beans Site Retainer Project
Baja Beans Site Retainer Project
1
6
AI Chatbot Developer(1)
Henry Yim's avatar
Henry Yim
Denver, USA
Fullstack Engineer (Ecommerce + AI Automation)
    $10k+
    Earned
    3x
    Hired
    5.0
    Rating
    55
    Followers
Fullstack Engineer (Ecommerce + AI Automation)
Cover image for AI-Powered Sales & Support Workflow for Shopify
AI-Powered Sales & Support Workflow for Shopify
2
35
Cover image for Shopify Plus Replatform & Global Commerce Migration for Basin
Shopify Plus Replatform & Global Commerce Migration for Basin
0
17
Cover image for B2B SaaS Workflow Platform for Shopify Merchants
B2B SaaS Workflow Platform for Shopify Merchants
2
50
Cover image for Shopify Video Conversion Platform Development
Shopify Video Conversion Platform Development
3
44
AI Chatbot Developer(1)
Aurelien GERIER's avatar
Aurelien GERIER
proLos Angeles, USA
Fullstack Engineer | 14+ yrs Shipping React,Next.js,Node,AI
    $50k+
    Earned
    7x
    Hired
    4.9
    Rating
    133
    Followers
TOP_INDEPENDENT

Top

Fullstack Engineer | 14+ yrs Shipping React,Next.js,Node,AI
Cover image for Breakjobs.ai
Breakjobs.ai
2
80
Cover image for Led delivery of a cloud-native
Led delivery of a cloud-native K-12 student wellness platform that helps counselors monitor wellbeing, surface at-risk students, and act early—balancing product velocity with FERPA/COPPA-aware design and multi-tenant isolation (API RBAC, PostgreSQL RLS, district-scoped analytics). → Owned technical direction and delivery rhythm across a TypeScript monorepo (pnpm/Turbo): backend API, web app, shared packages, DB migrations, CI/CD gates, and staged deploys to GCP (e.g. Cloud Run), aligning engineering work with roadmap and release risk. → Orchestrated an AI assistant for counselors on Google Vertex AI (Gemini): system prompts, safety settings for K-12, function-calling tool design, multi-round tool loops, and strict separation so UI widgets render from verified tool results—not model hallucinations—with tracing/feedback hooks (e.g. Langfuse) for quality and auditability. → Drove access-control and compliance posture for sensitive student data: role/permission middleware, tenant-scoped queries, and defense-in-depth database policies—documentation and evidence suitable for enterprise security reviews (e.g. SOC 2–style narratives). → Partnered on product and program management: phased feature rollout, PR/branch discipline, and clear ownership of scope vs. risk so pilot schools could onboard without compromising data boundaries. → Shaped integrations and platform boundaries: Firebase auth, Neon PostgreSQL + Drizzle ORM, real-time patterns, BigQuery analytics isolation, and operational practices (testing, lint, type-check) that keep the stack maintainable at scale. → Established a disciplined, AI-accelerated delivery model—not ad-hoc prompting: Cursor rules and Claude skills/agents for repeatable workflows; Husky + lint/type-check/test gates; GitHub Actions CI/CD; Cursor Cloud Agents for automated PR review; and daily monitoring of E2E, coverage, and critical issues—owning AI-orchestrated implementation while enforcing accuracy, consistency, and observability
1
593
Cover image for WhatsApp & RCS Integrated Platform for ParaVet.live
WhatsApp & RCS Integrated Platform for ParaVet.live
1
50
Cover image for Scalable Digital Platform for Cognitive Testing
Scalable Digital Platform for Cognitive Testing
0
42
AI Chatbot Developer(1)
Michael Fullmer's avatar
Michael Fullmer
Mt Gilead, USA
AI Solutions, lead gen chatbots, UI/UX designer
    5.0
    Rating
    5
    Followers
AI Solutions, lead gen chatbots, UI/UX designer
Cover image for lead gen voice chat bot
lead gen voice chat bot
1
53
Cover image for fully responsive web page with
fully responsive web page with lead generating Voice-Enabled "Talking" Web Interfaces
0
70
Cover image for "Voice + Text AI Chatbot
"Voice + Text AI Chatbot – Lead Qualification & Routing for Title & Escrow Company" Built an intelligent, voice-enabled conversational assistant (Quinn) for Total Title Services that greets website visitors, qualifies leads across 6 customer types (Buyers, Sellers, Agents, Investors, Lenders, FSBO), collects structured information (name, state, email, phone, transaction volume, etc.), and delivers clean leads to the team via email/webhook/CSV backup. Features natural voice interaction, input validation, smart retries, session persistence, and mobile-responsive UI.
1
97
Cover image for "Voice + Text AI Chatbot
"Voice + Text AI Chatbot – Lead Qualification & Routing for Title & Escrow Company" Built an intelligent, voice-enabled conversational assistant (Quinn) for Total Title Services that greets website visitors, qualifies leads across 6 customer types (Buyers, Sellers, Agents, Investors, Lenders, FSBO), collects structured information (name, state, email, phone, transaction volume, etc.), and delivers clean leads to the team via email/webhook/CSV backup. Features natural voice interaction, input validation, smart retries, session persistence, and mobile-responsive UI.
1
3
135
AI Chatbot Developer(4)
Alena Nyrkova's avatar
Alena Nyrkova
proMiami, USA
AI Video Ads & Avatars · Websites with AI Receptionist
New to Contra
AI Video Ads & Avatars · Websites with AI Receptionist
Cover image for AI Receptionist Website in 3 Days — Books Clients 24/7
AI Receptionist Website in 3 Days — Books Clients 24/7
0
3
Cover image for MedBridge Concierge: website with an AI front desk
MedBridge Concierge: website with an AI front desk
0
2
Cover image for Torch Rise | Northwake Particle Motion Film
Torch Rise | Northwake Particle Motion Film
0
0
Cover image for Rowsmith | Interaction Details
Rowsmith | Interaction Details
0
1
AI Chatbot Developer(2)
Jonathan Scott's avatar
Jonathan Scott
Hobart, USA
AI Automation Engineer. I build bots and tools that deliver
New to Contra
AI Automation Engineer. I build bots and tools that deliver
Cover image for A Telegram bot that took
A Telegram bot that took a user from a single message to a finished, paid-for deliverable, with no human in the loop at any step. Built, deployed, and run in production; the bot has since been retired, and the source is public. WHAT IT DID A user started a conversation, answered a few questions about their niche, and the bot generated a complete business asset pack — content, copy, and supporting documents. It previewed part of the result, took payment, then delivered the full package as downloadable files. HOW IT WORKS A Node.js and Express service receives Telegram webhooks and routes them through modular command handlers, holding conversation state across a multi-step flow. The Anthropic Claude API does the generation, with configurable models, tuned token budgets, and automatic retry on transient failures. Payment runs on Stripe, and the fulfillment path is idempotent by design: incoming webhook events are deduplicated by event ID, and a unique database constraint on the charge makes double-delivery and double-charging structurally impossible rather than merely unlikely. Session and usage state lives in Redis on Upstash, with an in-memory fallback so the service runs locally without external dependencies. It ships as a multi-stage Docker image that runs as a non-root user with health checks and correct signal handling for graceful shutdown, behind a GitHub Actions pipeline that builds and validates the image on every push.
0
16
Cover image for Most AI site builders hand
Most AI site builders hand you one page and a prompt box. This one ask four questions and returns a complete, navigable website — Home, About, Services, Pricing, Contact — with working links between them, delivered as a preview URL and a downloadable .zip. WHAT IT SELLS A free homepage (one per day), a full five-page website, or a five-stage sales funnel. Payment runs on Telegram Stars, which is what Telegram requires for digital goods sold inside a bot. HOW IT WORKS A Node.js and Express service on MongoDB, running as a Telegram bot, a Telegram Mini App, and a Discord bot from one codebase. Claude generates the site in a three-stage orchestration — brief, then pages, then CSS — behind a single API client with a daily spend breaker. The payment path is built around one rule: a build that fails after a successful payment must never lose the buyer's money. Generation never throws for content reasons; it returns a result object so the caller can decide. Failures refund automatically, without the buyer having to ask. Pricing is validated server-side from a single catalog, so the client can't propose its own price. Preview and download routes use capability URLs — an unguessable 16-byte slug is the credential — because Telegram's open Link hands the URL to the system browser, which can't carry an auth header, and generated pages link to each other relatively. Operationally: tiered rate limits per user, a one-build-at-a-time concurrency guard, a daily spend cap that pauses builds, and a health endpoint reporting uptime, database state, todays spend, and whether builds are paused. Deployed on Railway from a Docker image, behind a CI pipeline that runs syntax, unit, and end-to-end suites on every push — a red suite blocks the merge, so it never reaches production. Discord runs the free tier as an acquisition channel and routes paying users to Telegram, because Discord has no arbitrary-amount invoice and no bot-callable refund.
0
20
Cover image for A Telegram tap-and-build game where
A Telegram tap-and-build game where players grow a business from nothing. Progress earns in-game stars through play. Real Telegram Stars buy something different: actual business assets, generated and delivered for real. THE DESIGN PROBLEM Two currencies in one interface. The earned currency drives the game loop. The real one crosses from simulation into fulfillment — a player running a fictional business can buy a real one's worth of assets without leaving the chat. The two have to feel connected enough that the purchase is a natural next step, and separated enough that nobody confuses play money for a payment. HOW IT WORKS Node.js, Express, and MongoDB, with a Telegram Mini App front end. The game engine is server-authoritative: the client sends intent — "10 taps" — never outcomes. XP, levels, compounding upgrade costs, passive income, and missions are pure functions, with every balance number in a single catalog file. The money path is the part worth reading. Telegram Stars invoices run through pre-checkout validation to fulfillment. A unique index on the Telegram charge ID means a replayed payment is caught and ignored. Stars debit through a conditional atomic update, so two concurrent purchases can't both succeed. Generation failures after a successful debit refund automatically. Claude is treated as untrusted input. The router validates its JSON, overwrites the user ID with the authenticated Telegram ID, re-derives prices from the catalog rather than trusting the model, and rejects any function outside a four-entry allow-list. Every request carries HMAC-validated Telegram initData, plus a webhook secret. The server returns render-ready screens through a JSON UI contract, so the client holds no prices and no rules. Verified by 33 unit tests and 20 end-to-end HTTP tests against a real database. Rate limiting, structured logs with secrets redacted, health checks, Docker, deployed on Railway.
0
8
Cover image for A product line of three
A product line of three self-contained tools sold through the NuroWorks marketplace: SocialFlow Pro (content planning and caption generation), LeadFlow Pro (client acquisition, outreach scripts, and proposal generation), and NuroFlow Pro (workflow automation). Sold individually or as a bundle. THE DESIGN DECISION Each tool is a self-contained HTML application delivered as a ZIP. No server, no account, no install, no subscription. The buyer unzips it, opens it in a browser, and it works — offline, indefinitely, with no dependency on my infrastructure staying up. That constraint shaped everything. All state lives client-side, every interaction is handled in the browser, and the whole product has to survive being opened from a file path years after purchase. It also means zero hosting cost per customer and nothing for a buyer to lose access to. DELIVERY Checkout runs through Payhip, with the package delivered immediately on purchase. Pricing is one-time — no recurring fees, and buyers keep their files.
0
15
AI Chatbot Developer(2)