You will get a secure API and webhook integration for your SaaS
Project details
Connect your SaaS or internal platform to a third-party API without creating a fragile happy-path script. I will map the data contract, authentication, source-of-truth rules, retries, duplicate protection, error handling, tests, deployment, and operating handoff around one bounded integration.
This project is a fit for REST APIs, webhooks, payments, CRM or ERP connections, AI model APIs, data synchronization, and internal service-to-service workflows. The scope is locked before development. Client-owned accounts and credentials are used after the Upwork contract starts; secrets are never requested in chat.
Third-party usage, licensing, and hosting fees are not included.
This project is a fit for REST APIs, webhooks, payments, CRM or ERP connections, AI model APIs, data synchronization, and internal service-to-service workflows. The scope is locked before development. Client-owned accounts and credentials are used after the Upwork contract starts; secrets are never requested in chat.
Third-party usage, licensing, and hosting fees are not included.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$500
|
Standard
$1,750
|
Advanced
$3,500
|
|---|---|---|---|
| Delivery Time | 4 days | 8 days | 14 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 1 | 1 | 2 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Frequently asked questions
About Joshua
AI Product Engineer | SaaS, Agents, Apps & Automation
St. Louis, United States - 11:41 am local time
I’m the founder and lead product engineer at Michai Media. Recent public products include ScanWrench (vehicle diagnostics), LoadLadder (freight search and operations), Credit Orchard (consumer credit workflows), and Proxxi (privacy-first local discovery). Those projects show the full path from product definition and interface design through backend architecture, AI integration, deployment, and operations.
Best-fit projects:
• AI agents, RAG, knowledge bases, persistent memory, tools, evaluation, guardrails, and human handoff
• Voice agents for intake, qualification, booking, and support
• SaaS MVPs, internal tools, dashboards, portals, and marketplaces
• Secure APIs, Postgres data models, webhooks, sync pipelines, and third-party integrations
• React Native and web apps with authentication, billing, analytics, notifications, and admin controls
• Workflow automation and rescue or stabilization of existing software
I work directly with you. We define a measurable outcome, lock the release boundary, prove risky assumptions early, and ship in tested milestones. You receive documented source, deployment guidance, and a system your team can actually operate.
Core stack: TypeScript, Next.js, React Native, Supabase/Postgres, OpenAI, Anthropic, Stripe, Telnyx, Mapbox, and modern cloud tooling.
Send the business problem, target users, current stack, and constraints. I’ll recommend the smallest credible first phase.
Steps for completing your project
After purchasing the project, send requirements so Joshua can start the project.
Delivery time starts when Joshua receives requirements from you.
Joshua works on your project following the steps below.
Revisions may occur after the delivery date.
Integration discovery
Confirm the systems, business outcome, data ownership, authentication, test environment, and acceptance criteria.
Contract and data mapping
Map endpoints, fields, permissions, error states, retries, idempotency, and source-of-truth rules.