Top Rated USA Based! Online Payments Specialist. 10+yrs of experience with Low & High Risk Merchants Utilizing Shopify WIX Woo eCommerce Platforms. Specializing in Startups and able to service enterprise level merchants also. Happy to help with the following:
- Native Gateway Integration for popular platforms like Shopify, Wix, and WooCommerce (eliminating cart redirects)
- Automated Recurring Payments for subscription-based "subscribe & save" offerings
- A convenient Buy Now Pay Later option for your customers
- An Invoice Feature that allows you to send payable email invoices and text payment links
- Comprehensive Credit Card Payment Processing capabilities
- Options for Crypto Payment Processing
- Echeck Payment Processing functionality
- Integrated AI Marketing Tools to support your promotional efforts
- Advanced Fraud Tools to protect your transactions
- Chargeback Alerts to help you manage payment disputes
- ApplePay integration for seamless mobile payments
- QuickBooks Integration for streamlined accounting
- POS systems and Card Readers for efficient in-person sales
* Worldwide Payments Solutions for Any Region and Products or Service type
* Navigating the challenges High Risk Merchant Account Setup
* Multiple MID's for volume load balancing or different region coverage
* Fast Timelines for Approval, Integration, and Deployment
* Full project management from start to finish
Constant Communication is key to me when dealing with something as important as your sales revenues and functionality. Let's keep in touch, Aloha!
Wix
Shopify
API Integration
Payment Gateway Integration
Payment Gateway
Merchant Account Setup
Payment Processing
Payment Functionality
Payment Plugin
Mobile Payment Functionality
In-App Subscription
Ecommerce
Ecommerce Store Setup
Ecommerce Plugin Installation
Ecommerce Platform
Neella K.
Hyderabad, India
$30/hr
5.0
11 jobs
STRIPE CONNECT | STRIPE BILLING | STRIPE RADAR | STRIPE API | STRIPE CHECKOUT | STRIPE TERMINAL | FINTECH | SAAS | AI | PAYMENTS | COMPLIANCE (PCI DSS, GDPR)
If Stripe is slowing down your product, breaking your billing logic, or causing failed payments you can’t explain, I can fix that.
I’ve delivered 100+ Stripe integrations for SaaS and tech companies, and I’m a 4× Stripe Certified professional. You’re not getting a basic integration, you’re getting a payments system designed to reduce churn, recover revenue, and scale with your growth.
I specialize in building Stripe systems that directly impact metrics like churn, AOV (Average Order Value), LTV, and checkout conversion rates.
I don’t just plug APIs. I step into your architecture and make sure your billing, subscriptions, and payment flows are optimized end-to-end.
I can help if you’re dealing with:
🔹 High checkout abandonment rates
🔹 Unexpected churn from failed payments or poor retry logic
🔹 Broken or confusing subscription upgrades/downgrades
🔹 Low AOV due to poor pricing or payment flow design
🔹 Inconsistent or unreliable webhook handling
🔹 Stripe setups that “work” but don’t scale
What I can help you with:
🔹 End-to-end Stripe integration for SaaS platforms
🔹 Subscription architecture (plans, trials, proration, lifecycle logic)
🔹 Reducing churn with smarter retry logic and dunning strategies
🔹 Checkout optimization to improve conversion rates
🔹 Webhook architecture (reliable, scalable, no missed events)
🔹 Stripe account audits with revenue-focused insights
🔹 Advanced Stripe products (Connect, Sigma, custom workflows)
If you already have developers, I can work directly with them or guide them through the correct architecture in live sessions.
Most Stripe implementations leave money on the table. I help you close those gaps so your payments system actually drives revenue, not just processes it.
If you want to improve conversion, reduce churn, or fix hidden issues in your Stripe setup, send me a message and let’s take a look.
Python
JavaScript
React
Next.js
WordPress
CMS Development
Node.js
API Development
Java
AWS Development
OpenAI API
Payment Gateway Integration
Stripe
Stripe API
Stripe SDK
Mujtaba S.
Lahore, Pakistan
$30/hr
4.9
78 jobs
⭐ Top Rated Plus | Top 3% of performers on Upwork
✅ 10+ years building SaaS and AI products | 100+ projects delivered
✅ AI that ships: RAG, AI agents, MCP, Voice AI, LLM integration
✅ Full stack: Next.js, React, TypeScript, Python, Node.js, PostgreSQL, AWS
✅ SaaS, MVPs, automation, fintech, healthcare, construction, legal tech, and sales products
Need AI added to your app, a workflow automated, or an MVP finished? I can help you scope it, build it, and ship it without overcomplicating the first milestone.
I build AI products that survive real users, real data, and real business workflows: SaaS MVPs, AI agents, RAG systems, voice AI, and automation inside existing products.
I work well on both small and large projects. If the right first step is a quick audit, prototype, bug fix, integration, or one-week milestone, I will tell you that. If the project needs a full build, I can own the architecture, frontend, backend, AI layer, deployment, and documentation.
The part most AI freelancers skip: AI is rarely the whole product. It usually needs a backend, dashboard, auth, billing, permissions, logs, human review, and deployment around it. I build both the AI layer and the product around it.
WHAT I DO:
- AI SaaS & MVP builds: idea to deployed product with auth, billing, dashboards, and AI layer
- AI inside existing products: RAG, agents, MCP, LLM features, document AI, and automation
- Voice AI: agents that answer calls, book appointments, qualify leads, and log to your CRM
- RAG and document AI: source-grounded answers, OCR, extraction, citations, and review queues
- Workflow automation: documents, follow-ups, data entry, reporting, and API integrations
- Rescue & ship: half-built MVPs refactored, hardened, and launched
RECENT DELIVERIES:
- AI sales CRM: call transcription, follow-up automation, multi-tenant pipelines
- RAG document platform with every answer cited to source
- AI financial intelligence platform: open banking + accounting sync into one ledger
- AI voice agents for healthcare and sales, answering real calls daily
- Turnkey B2B SaaS platform for the construction industry, end to end
HOW I WORK:
- I start by understanding the workflow, users, data, and business goal
- I suggest the smallest useful first milestone when possible
- I scope clearly before code is written, so you know cost and timeline up front
- I can work on focused tasks, short prototypes, rescue work, or full product builds
- I work full time on Upwork with overlap for US and European business hours
If you need one AI feature, a quick prototype, a stuck MVP fixed, or a full SaaS product built, send me a short description of what you have and what you want it to do.
I will reply with the clearest next step, the likely scope, and the first milestone I would recommend.
Tech Stack:
AI and LLM: OpenAI, Claude, Gemini, LangChain, LangGraph, CrewAI, MCP, function calling, model routing
RAG and vector search: RAG pipelines, embeddings, semantic search, pgvector, Pinecone, document AI, OCR
AI agents and automation: multi-agent systems, AI copilots, workflow automation, document extraction with review queues
AI reliability: evaluation sets, hallucination reduction, human-in-the-loop workflows
Voice AI: Vapi, Retell, ElevenLabs, Deepgram, OpenAI Realtime, Twilio
Frontend: Next.js, React, TypeScript, Tailwind CSS, React Native
Backend: Node.js, Python, FastAPI, REST and GraphQL APIs, WebSockets
Databases: PostgreSQL, Supabase, Redis, MongoDB
SaaS architecture: multi-tenant, tenant isolation, RBAC, Stripe billing, admin dashboards
Cloud and DevOps: AWS, Docker, Vercel, CI/CD, monitoring
Security and compliance: OAuth2, JWT, encryption, audit logs, HIPAA-aware builds, KYC/AML flows
Integrations: Stripe, Plaid, open banking APIs, QuickBooks, Xero, Twilio, CRMs, ERPs
Industries: AI SaaS, AI agents, document AI, RAG, FinTech, open banking, healthcare, B2B SaaS, startup MVPs, construction tech, legal tech, sales and CRM automation, voice AI, recruiting
Python
Full-Stack Development
AI App Development
SaaS Development
Artificial Intelligence
AI Agent Development
Next.js
React
Node.js
TypeScript
OpenAI API
Large Language Model
Retrieval Augmented Generation
LangChain
AI Model Integration
API Integration
Stripe
PostgreSQL
Minimum Viable Product
AWS Development
Basit S.
Islamabad, Pakistan
$15/hr
4.9
243 jobs
𝐅𝐫𝐚𝐠𝐢𝐥𝐞 𝐜𝐡𝐚𝐨𝐬 𝐩𝐫𝐞𝐭𝐞𝐧𝐝𝐢𝐧𝐠 𝐭𝐨 𝐛𝐞 𝐜𝐚𝐥𝐦? 𝐈 𝐭𝐮𝐫𝐧 𝐭𝐡𝐚𝐭 𝐢𝐧𝐭𝐨 𝐟𝐥𝐨𝐰 𝐂𝐥𝐢𝐜𝐤𝐔𝐩 𝐬𝐲𝐬𝐭𝐞𝐦𝐬 𝐝𝐞𝐥𝐢𝐯𝐞𝐫𝐢𝐧𝐠 𝟓𝟎% 𝐟𝐚𝐬𝐭𝐞𝐫 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬, 𝐳𝐞𝐫𝐨 𝐝𝐞𝐚𝐝𝐥𝐢𝐧𝐞 𝐝𝐫𝐢𝐟𝐭, 𝐚𝐧𝐝 𝟐𝟓+ 𝐡𝐨𝐮𝐫𝐬 𝐬𝐚𝐯𝐞𝐝 𝐰𝐞𝐞𝐤𝐥𝐲. 𝐂𝐚𝐥𝐦 𝐢𝐬𝐧’𝐭 𝐥𝐮𝐜𝐤 𝐢𝐭’𝐬 𝐚𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞.
By helping teams and 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀𝗲𝘀 𝘁𝗿𝗮𝗻𝘀𝗳𝗼𝗿𝗺 𝗗𝗶𝘀𝗰𝗼𝗻𝗻𝗲𝗰𝘁𝗲𝗱 𝗽𝗿𝗼𝗰𝗲𝘀𝘀𝗲𝘀 into streamlined, automated systems that actually deliver results.
As a 𝗣𝗠𝗣 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 𝗠𝗮𝗻𝗮𝗴𝗲𝗿, 𝗖𝗹𝗶𝗰𝗸𝗨𝗽 V𝗲𝗿𝘁𝗶𝗳𝗶𝗲𝗱 𝗖𝗼𝗻𝘀𝘂𝗹𝘁𝗮𝗻𝘁, and 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗔𝗻𝗮𝗹𝘆𝘀𝘁, I design scalable 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲𝘀, 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗲 𝗥𝗲𝗰𝘂𝗿𝗿𝗶𝗻𝗴 𝗪𝗼𝗿𝗸𝗳𝗹𝗼𝘄𝘀, and keep teams aligned from concept to delivery.
𝗣𝗿𝗼𝗷𝗲𝗰𝘁 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲
I create robust project plans using 𝗔𝗴𝗶𝗹𝗲, 𝗦𝗰𝗿𝘂𝗺, and 𝗛𝘆𝗯𝗿𝗶𝗱 𝗙𝗿𝗮𝗺𝗲𝘄𝗼𝗿𝗸𝘀, ensuring total visibility and accountability at every level. From 𝗪𝗼𝗿𝗸 𝗕𝗿𝗲𝗮𝗸𝗱𝗼𝘄𝗻 𝗦𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲𝘀 (𝗪𝗕𝗦) and 𝗚𝗮𝗻𝘁𝘁 𝗖𝗵𝗮𝗿𝘁𝘀 to 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 𝗕𝘂𝗱𝗴𝗲𝘁𝗶𝗻𝗴, 𝗥𝗼𝗹𝗲 𝗠𝗮𝗽𝗽𝗶𝗻𝗴, and 𝗪𝗼𝗿𝗸𝗳𝗹𝗼𝘄 𝗢𝗽𝘁𝗶𝗺𝗶𝘇𝗮𝘁𝗶𝗼𝗻, my approach eliminates inefficiency before it spreads.
I’ve delivered successful outcomes in 𝗗𝗶𝗴𝗶𝘁𝗮𝗹 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁, 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗣𝗿𝗼𝗷𝗲𝗰𝘁𝘀, and 𝗖𝗿𝗼𝘀𝘀-𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝗮𝗹 𝗟𝗲𝗮𝗱𝗲𝗿𝘀𝗵𝗶𝗽, leveraging platform like 𝗖𝗹𝗶𝗰𝗸𝗨𝗽, 𝗝𝗶𝗿𝗮, 𝗔𝘀𝗮𝗻𝗮, 𝗧𝗿𝗲𝗹𝗹𝗼, 𝗡𝗼𝘁𝗶𝗼𝗻, 𝗠𝗼𝗻𝗱𝗮𝘆.𝗰𝗼𝗺, and 𝗠𝗶𝗰𝗿𝗼𝘀𝗼𝗳𝘁 𝗣𝗿𝗼𝗷𝗲𝗰𝘁. These tools become real systems not just task lists with 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗲𝗱 𝗗𝗲𝗽𝗲𝗻𝗱𝗲𝗻𝗰𝗶𝗲𝘀, 𝗠𝗶𝗹𝗲𝘀𝘁𝗼𝗻𝗲 𝗧𝗿𝗮𝗰𝗸𝗶𝗻𝗴, and 𝗥𝗲𝗮𝗹-𝘁𝗶𝗺𝗲 𝗥𝗲𝗽𝗼𝗿𝘁𝗶𝗻𝗴 𝗗𝗮𝘀𝗵𝗯𝗼𝗮𝗿𝗱𝘀.
𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗔𝗻𝗮𝗹𝘆𝘀𝗶𝘀 𝗧𝗵𝗮𝘁 𝗗𝗿𝗶𝘃𝗲𝘀 𝗔𝗰𝘁𝗶𝗼𝗻:
Behind every high-performing workflow is sharp business analysis. I bridge strategy and execution with expertise in:
- 𝗥𝗲𝗾𝘂𝗶𝗿𝗲𝗺𝗲𝗻𝘁𝘀 𝗘𝗹𝗶𝗰𝗶𝘁𝗮𝘁𝗶𝗼𝗻, 𝗦𝘁𝗮𝗸𝗲𝗵𝗼𝗹𝗱𝗲𝗿 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁, 𝗮𝗻𝗱 𝗗𝗮𝘁𝗮 𝗔𝗻𝗮𝗹𝘆𝘀𝗶𝘀
- 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗣𝗿𝗼𝗰𝗲𝘀𝘀 𝗠𝗼𝗱𝗲𝗹𝗶𝗻𝗴 𝗮𝗻𝗱 𝗖𝗵𝗮𝗻𝗴𝗲 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁
- 𝗨𝘀𝗲𝗿 𝗦𝘁𝗼𝗿𝘆 𝗪𝗿𝗶𝘁𝗶𝗻𝗴, 𝗣𝗿𝗼𝘁𝗼𝘁𝘆𝗽𝗶𝗻𝗴, 𝗮𝗻𝗱 𝗠𝗮𝗻𝘂𝗮𝗹 𝗤𝗔 𝗧𝗲𝘀𝘁𝗶𝗻𝗴
- 𝗥𝗶𝘀𝗸 𝗔𝗻𝗮𝗹𝘆𝘀𝗶𝘀 𝗮𝗻𝗱 𝗣𝗿𝗼𝗰𝗲𝘀𝘀 𝗢𝗽𝘁𝗶𝗺𝗶𝘇𝗮𝘁𝗶𝗼𝗻
Whether it’s building a 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗥𝗲𝗾𝘂𝗶𝗿𝗲𝗺𝗲𝗻𝘁𝘀 𝗗𝗼𝗰𝘂𝗺𝗲𝗻𝘁 (𝗕𝗥𝗗), 𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝗮𝗹 𝗥𝗲𝗾𝘂𝗶𝗿𝗲𝗺𝗲𝗻𝘁𝘀 𝗗𝗼𝗰𝘂𝗺𝗲𝗻𝘁 (𝗙𝗥𝗗), or complete 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗥𝗲𝗾𝘂𝗶𝗿𝗲𝗺𝗲𝗻𝘁𝘀 𝗦𝗽𝗲𝗰𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻 (𝗦𝗥𝗦), I ensure technical clarity, business alignment, and smooth developer handoff.
𝗗𝗼𝗰𝘂𝗺𝗲𝗻𝘁𝗮𝘁𝗶𝗼𝗻 & 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗪𝗿𝗶𝘁𝗶𝗻𝗴:
Clarity is the foundation of every project. I craft precise, 𝗦𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲𝗱 𝗗𝗼𝗰𝘂𝗺𝗲𝗻𝘁𝗮𝘁𝗶𝗼𝗻 including:
- 𝗣𝗥𝗗𝘀, 𝗕𝗥𝗗𝘀, 𝗙𝗥𝗗𝘀, 𝗨𝗫 𝗕𝗿𝗶𝗲𝗳𝘀, 𝗔𝗣𝗜 𝗗𝗼𝗰𝘀, 𝗧𝗲𝘀𝘁 𝗣𝗹𝗮𝗻𝘀, 𝗙𝗲𝗮𝘀𝗶𝗯𝗶𝗹𝗶𝘁𝘆 𝗥𝗲𝗽𝗼𝗿𝘁𝘀, 𝗠𝗮𝗿𝗸𝗲𝘁 𝗔𝗻𝗮𝗹𝘆𝘀𝗲𝘀, and 𝗖𝗮𝘀𝗲 𝗦𝘁𝘂𝗱𝗶𝗲𝘀.
- Tools like 𝗖𝗼𝗻𝗳𝗹𝘂𝗲𝗻𝗰𝗲, 𝗚𝗶𝘁𝗕𝗼𝗼𝗸, 𝗟𝘂𝗰𝗶𝗱𝗰𝗵𝗮𝗿𝘁, 𝗗𝗿𝗮𝘄.𝗶𝗼, 𝗙𝗶𝗴𝗺𝗮, 𝗩𝗶𝘀𝗶𝗼, and 𝗠𝗶𝗿𝗼 help visualize and communicate complex systems from 𝗨𝗠𝗟 𝗗𝗶𝗮𝗴𝗿𝗮𝗺𝘀, 𝗘𝗥𝗗𝘀, 𝗮𝗻𝗱 𝗗𝗙𝗗𝘀 𝘁𝗼 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 𝗠𝗮𝗽𝘀 and 𝗪𝗶𝗿𝗲𝗳𝗿𝗮𝗺𝗲𝘀.
𝗦𝗰𝗿𝘂𝗺 & 𝗔𝗴𝗶𝗹𝗲 𝗟𝗲𝗮𝗱𝗲𝗿𝘀𝗵𝗶𝗽:
I lead full-cycle 𝗦𝗰𝗿𝘂𝗺 𝗖𝗲𝗿𝗲𝗺𝗼𝗻𝗶𝗲𝘀, 𝗦𝗽𝗿𝗶𝗻𝘁 𝗣𝗹𝗮𝗻𝗻𝗶𝗻𝗴, refinement, daily stand-ups, retrospectives, and backlog prioritization with tools like 𝗝𝗶𝗿𝗮, 𝗖𝗹𝗶𝗰𝗸𝗨𝗽, 𝗮𝗻𝗱 𝗡𝗼𝘁𝗶𝗼𝗻.. I make sure sprint goals are tied to 𝗠𝗲𝗮𝘀𝘂𝗿𝗮𝗯𝗹𝗲 𝗞𝗣𝗜𝘀 and team outputs stay transparent and trackable.
𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 & 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻:
Why waste hours on tasks that could run themselves?
I build 𝗠𝗮𝗸𝗲.𝗰𝗼𝗺 𝗮𝗻𝗱 𝗭𝗮𝗽𝗶𝗲𝗿 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻𝘀 that sync your apps (𝗦𝗹𝗮𝗰𝗸, 𝗛𝘂𝗯𝗦𝗽𝗼𝘁, 𝗔𝗶𝗿𝘁𝗮𝗯𝗹𝗲, 𝗭𝗼𝗵𝗼, 𝗲𝘁𝗰.), cut down 𝗥𝗲𝗽𝗲𝘁𝗶𝘁𝗶𝘃𝗲 𝗔𝗱𝗺𝗶𝗻 𝗪𝗼𝗿𝗸, and keep data flowing Smoothly across your systems.
𝗥𝗲𝘀𝘂𝗹𝘁𝘀 𝗧𝗵𝗮𝘁 𝗦𝘁𝗶𝗰𝗸:
- 𝟯𝟬–𝟱𝟬% 𝗳𝗮𝘀𝘁𝗲𝗿 𝗱𝗲𝗹𝗶𝘃𝗲𝗿𝘆 𝗰𝘆𝗰𝗹𝗲𝘀
- 𝟭𝟬𝟬% 𝘃𝗶𝘀𝗶𝗯𝗶𝗹𝗶𝘁𝘆 𝘁𝗵𝗿𝗼𝘂𝗴𝗵 𝗰𝘂𝘀𝘁𝗼𝗺 𝗱𝗮𝘀𝗵𝗯𝗼𝗮𝗿𝗱𝘀
- 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗲𝗱 𝘁𝗮𝘀𝗸 𝗳𝗹𝗼𝘄𝘀 𝗮𝗻𝗱 𝗿𝗲𝗽𝗼𝗿𝘁𝗶𝗻𝗴
- 𝗖𝗼𝗻𝘀𝗶𝘀𝘁𝗲𝗻𝘁 𝘁𝗲𝗮𝗺 𝗮𝗰𝗰𝗼𝘂𝗻𝘁𝗮𝗯𝗶𝗹𝗶𝘁𝘆 𝗮𝗻𝗱 𝗰𝗼𝗺𝗺𝘂𝗻𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗰𝗹𝗮𝗿𝗶𝘁𝘆
If your projects need structure, clarity, and scalable systems that work even when you’re not watching you’re in the right place.
→ Click “𝗜𝗻𝘃𝗶𝘁𝗲 𝘁𝗼 𝗝𝗼𝗯” and let’s build a workflow that runs like a business should fast, clear, and fully optimized.
ClickUp
Digital Project Management
Agile Project Management
Technical Project Management
Zapier
Agile Software Development
Sprint Planning
Project Workflows
Technical Documentation
IT Project Management
Task Automation
Dev & IT Project Management
Jira
Make.com
Asana
Mozammel H.
Jhenaidah, Bangladesh
$31/hr
5.0
177 jobs
Hi,
I'm a full time freelancer Stripe developer working in Upwork since 2011 and have completed 70+ projects including some large projects.
***I have expert knowledge in:
✅ Languages & Frameworks: PHP, CodeIgniter, jQuery, Ajax, JavaScript, CSS, HTML etc.
✅ APIs: Stripe, Vonage, Twilio, Telegram, Dropbox, Google Map, 1up and other third-party APIs.
✅ Server: AWS, Linux Server Installation/Setup, Configuration and Management.
***Specialist in:
✅ CodeIgniter: Any kinds of CodeIgniter Web Application Development or Modification.
✅ Stripe API Integration: Stripe Subscription or Recurring Payment, Stripe-Webhook, Stripe-PAD, Stripe-Affirm, Stripe-Klarna, Stripe-Charges, Stripe-Customer-Portal and any kinds of other Stripe related task.
***Why I'm the best for your web development service?
✅ 100% Client Satisfaction and Client Recommendation!
✅ Near 24/7 Availability - Always find a convenient time that works best for you. There is absolutely no need for you to adapt your busy life/work schedule to get this project done.
✅ More than 10 years in Web Development, Mostly specialized on back-end and high load, but also good at front-end!
I look forward to working with you. Thanks for reading. Please ping me if you need any of my services or have any question.
I'm open for any new long-term/short-term contract.
Kind regards,
Mozammel H.
Stripe
Stripe API
Payment Gateway Integration
Payment Processing
Payment Functionality
Node.js
React
Next.js
Twilio API
Ecommerce Website
PHP
CodeIgniter
Vonage
Bhavesh D.
San Francisco, California
$75/hr
4.4
294 jobs
CRO | CTO | STRIPE CONNECT | STRIPE BILLING | STRIPE RADAR | STRIPE API | STRIPE CHECKOUT | STRIPE TERMINAL | FINTECH | SAAS | AI | PAYMENTS | COMPLIANCE ( PCI DSS, GDPR)
CRO | Meta Ads | Google Ads | ROAS | CAC
XERO | QUICKBOOKS | ACCOUNTING SOFTWARE INTEGRATION
FRACTIONAL CTO SERVICES | SCALABLE MVP DEVELOPMENT | REMOTE TEAM LEADERSHIP | TECHNICAL ROADMAPPING | STRIPE CONSULTING & DEVELOPMENT | AI | AUTOMATION
Fractional CTO | 17+ Years IT Leadership | FinTech & Healthcare | Scalable MVPs | Stripe & Payments Expert
I bring 17+ years of experience in technology, 10 years in FinTech and 2 years in AI—leading startups from concept to scale. As a Fractional CTO, I specialize in architecting investor-ready MVPs, building and managing remote engineering teams, and aligning technical roadmaps with business milestones. My approach balances speed-to-market with the long-term stability investors expect.
As a Certified Stripe Expert, I’ve delivered 200+ projects across SaaS, eCommerce, and healthcare, helping founders design, integrate, and optimize payments that drive revenue and meet global compliance standards. Beyond Stripe, I manage full product lifecycles, ensuring delivery on time, within budget, and aligned with growth objectives.
I’m also passionate about AI-driven automation, applying conversational AI, intelligent bots, and no/low-code workflows to simplify operations and create scalable, cost-efficient systems.
What I Offer:
Fractional CTO leadership & technical roadmapping
Stripe consulting, integration, and optimization
Scalable MVP development with investor alignment
End-to-end project & product management (Agile/Scrum)
AI-powered automation for payments, SaaS, and operations
If you’re looking for a CTO who blends deep technical expertise with executive strategy, I’d be glad to help shape and scale your product.
SKILLS:
✓✓✓ Payment Gateway Integrations
✓✓✓ Payment Gateway Migrations
✓✓✓ Technical Roadmapping
✓✓✓ Startup Fundraising Support
✓✓✓ Cloud Architecture (AWS, GCP, Azure)
✓✓✓ Remote Team Leadership
✓✓✓ SaaS Architecture
✓✓✓ Healthcare Technology (HIPAA, HL7, FHIR)
✓✓✓ FinTech Compliance (PCI DSS, PSD2)
✓✓✓ Scalable MVP Development
✓✓✓ Vendor Management
✓✓✓ AI Software Development
✓✓✓ AI Agent Development
✓✓✓ No/Low Code Development
• STRIPE
• PAYPAL
• Authorize.net
• 2 Checkout
• Sage Pay
• Square
• WorldPay
• RazorPay
• WeChat Pay
• iDeal
• Klarna
• QuickBook TaxJar
• Xero
• AI
• ChatGPT
• LangChain
Tech Stack & Leadership Capabilities
✓ DevOps & Infrastructure: CI/CD pipelines, Docker, Kubernetes, infrastructure-as-code (Terraform, Ansible), monitoring & observability (Datadog, Prometheus, Grafana).
✓ Cybersecurity & Compliance: Identity and access management, encryption standards, SOC2 & GDPR compliance, penetration testing oversight.
✓ Data & Analytics: Data pipelines, ETL, real-time processing (Kafka, Spark), business intelligence dashboards.
✓ Mobile Oversight: iOS/Android (Swift, Kotlin, React Native, Flutter) – leadership & architectural guidance.
✓ Scalability & Reliability: Microservices architecture, high availability (HA), disaster recovery (DR), event-driven systems.
✓ Product Strategy: Product-market fit, UX/UI oversight, customer-driven roadmaps, investor milestone alignment.
Core Development Expertise:
✓ Languages & Frameworks: Python, Java, Node.js, Next.js, PHP, Java EE (Servlet, JSP, EJB, Hibernate, Spring).
✓ Web & CMS: WordPress, WooCommerce.
✓ Databases: MySQL, Oracle.
✓ Cloud: AWS, GCP, Azure.
✓ OS: Linux, Windows.
✓ Front-End: JavaScript, jQuery, AJAX, Node.js.
✓ APIs & Integrations: REST APIs, ChartMogul, Twilio, Mailchimp, HubSpot, Facebook Graph, Google Maps, Twitter.
✓ Video Handling: Cloudflare Stream (direct upload, processing, secure playback).
✓ Tooling & Automation: Jenkins, MQ, Agile/Scrum workflows.
Stripe
Payment Gateway Integration
PayPal Development
Payment Plugin
Payment Gateway
Payment Processing
Payment Functionality
Payment Integration Framework
Mobile Payment Functionality
Point of Sale & Payment Systems
PayPal
Stripe API
Stripe SDK
Google Ads
Conversion Rate Optimization
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How much does it cost to hire a Payments Freelancer?
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Can I hire a Payments Freelancer within 24 hours on Upwork?
Depending on availability and the quality of your job post, it’s entirely possible to sign up for Upwork and receive Payments Freelancer proposals within 24 hours of posting a job description.