You will get Stripe Connect Marketplace Sprint
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Top Rated
Project details
What you get
I integrate Stripe Connect so your marketplace can onboard sellers, accept payments, and pay out reliably—without double charges or missed webhooks. I handle the account model, KYC/onboarding, transfers/payouts, refunds/disputes hooks, and production-grade webhooks (retries + idempotency). You also get tests, dashboards, and a handoff runbook.
Tech & patterns
Node/TypeScript, Go, Ruby on Rails, Next.js/React, REST APIs, queues/retries, webhook signature verification, secrets, CI/CD. (Auth0/RBAC available if needed.)
Deliverables
- Seller onboarding (Standard/Express)
- Payout/transfer logic with fees
- Webhooks with retries & idempotency keys
- Refunds/disputes event handling
- Unit/integration tests, .env & secrets
- Logs/metrics/alerts + dashboards
- Handoff docs & runbook
Why me
Fractional CTO who rebuilt GoodPix V2 end-to-end. $800k+ earned on Upwork, 100% JSS. I ship, stabilize, and document.
I integrate Stripe Connect so your marketplace can onboard sellers, accept payments, and pay out reliably—without double charges or missed webhooks. I handle the account model, KYC/onboarding, transfers/payouts, refunds/disputes hooks, and production-grade webhooks (retries + idempotency). You also get tests, dashboards, and a handoff runbook.
Tech & patterns
Node/TypeScript, Go, Ruby on Rails, Next.js/React, REST APIs, queues/retries, webhook signature verification, secrets, CI/CD. (Auth0/RBAC available if needed.)
Deliverables
- Seller onboarding (Standard/Express)
- Payout/transfer logic with fees
- Webhooks with retries & idempotency keys
- Refunds/disputes event handling
- Unit/integration tests, .env & secrets
- Logs/metrics/alerts + dashboards
- Handoff docs & runbook
Why me
Fractional CTO who rebuilt GoodPix V2 end-to-end. $800k+ earned on Upwork, 100% JSS. I ship, stabilize, and document.
Programming Languages
HTML & CSS, JavaScript, GoCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$8,000
|
Standard
$13,000
|
Advanced
$18,000
|
|---|---|---|---|
| Delivery Time | 7 days | 14 days | 21 days |
Number of Revisions | 1 | 1 | 2 |
Number of Pages | 1 | 1 | 1 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$1,500 - $4,500Frequently asked questions
12 reviews
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NP
Nathan P.
May 8, 2026
Job Title: CRM & AI Integration Engineer (Base44, RingCentral, OpenAI)
Bradley was a pleasure to work with. Very talented, fast, and enjoyed our conversations. Learned a lot and would work with him again!
JL
Jordi L.
Oct 15, 2025
Next.js Engineer
Bradley is excellent. Highly recommend!
ML
MaryLiz L.
Jun 3, 2021
CSS Expert
Bradley is perhaps the most conscientious, communicative, thoughtful, talented and hard working software engineer I have worked with in my career as a tech founder and CEO. I cannot say enough about how amazing he is.
KV
Kim V.
Feb 18, 2018
Edits to Mobile Version of Shopify Site
KL
Kim L.
Oct 25, 2017
Wordpress / Developer / Mobile
Bradley was great. He got thrown into a website that was half way completed and picked it up like a pro. I didn't have to double check his work and could trust that it just got done efficiently. I highly recommend him.
About Bradley
AI Engineer | LLM Agents, RAG & Production AI Systems
100%
Job Success
Carney, United States - 8:00 am local time
12+ years building production software. 50+ products shipped across 12 industries. $900K+ earned on Upwork with 100% Job Success, and an average client engagement over 3 years, clients stay because I deliver.
What you get with me: technical leadership and hands-on execution from the same person. I design your architecture, build your AI integrations, ship production code, and leave you with something your team can own. No handoffs, no gap between the strategist and the person writing the code.
On the AI side, I go well beyond API wrappers: production RAG systems, multi-agent workflows, intelligent model routing for cost and performance, and inference infrastructure for AI research teams. I bring the same depth to high-concurrency backends, complex payment platforms, and modern web applications that need to scale.
I work primarily in TypeScript, Python, and Go across React, Next.js, Node.js, and AWS. I've shipped enough systems to know what compounds and what becomes technical debt, which means faster time to production with fewer costly architectural mistakes.
I work with everyone from early-stage startups to engineering teams inside larger companies. If you're building something with AI, or something ambitious that needs to actually ship, let's talk.
U.S.-based | Available now for projects, sprints, and fractional engagements.
Steps for completing your project
After purchasing the project, send requirements so Bradley can start the project.
Delivery time starts when Bradley receives requirements from you.
Bradley works on your project following the steps below.
Revisions may occur after the delivery date.
Kickoff (60 min)
Review goals, account type (Standard/Express/Custom), success metrics.
Access & Setup
Stripe keys, repo, ends, event list.