Hire the Best Payment Processing Specialists in California

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.

🟢 Available Full-Time | HIPAA Certified | Fremont, California, USA Is your practice losing revenue to unpaid claims, aging AR, or slow reimbursements? As a dedicated Medical Biller and Revenue Cycle Specialist with 6+ years of U.S. RCM experience, I help healthcare providers recover unpaid claims, reduce denials, verify insurance eligibility, and manage prior authorizations — so your cash flow stays healthy and predictable. With $100K+ earned, 9,000+ hours, and Top Rated Plus status, I bring the Medical Billing expertise that translates directly into improved collections and stronger revenue cycle performance for your practice. ✅ CORE MEDICAL BILLING & RCM SERVICES As your dedicated Medical Billing Specialist, I manage every stage of your revenue cycle: ✔ Medical Billing & Claims Submission — clean claim creation, charge entry, and electronic submission with 95%+ acceptance rate ✔ AR Recovery & Follow-Up — systematic pursuit of 30/60/90/120+ day aging claims bringing average AR days below 38 ✔ Denial Management — root cause analysis, appeals preparation, corrected claim resubmission, and persistent payer follow-up ✔ Insurance Verification & Eligibility — real-time benefits verification before every patient visit preventing front-end rejections ✔ Prior Authorization & Pre-Authorization — submission, tracking, renewal management, and payer coordination ✔ Payment Posting — accurate ERA/EOB posting, reconciliation, and underpayment identification ✔ Clearinghouse Rejection Resolution — fast identification and correction of rejected claims ✔ Patient Billing & Statements — clear invoicing, balance follow-up, and collections support ✅ AR RECOVERY & DENIAL MANAGEMENT As your RCM Specialist, I do not just submit claims — I analyze your entire revenue cycle to protect and recover your revenue: ✔ Identify denial patterns and permanently fix root causes ✔ Submit timely appeals with full supporting documentation ✔ Follow up aggressively with payers via phone and portal ✔ Recover aged receivables across all 30/60/90/120+ day buckets ✔ Bring AR days from 60–90 days down to under 38 days ✔ Reduce future denials through proactive claim scrubbing ✔ Implement front-end verification workflows that prevent rejections before submission ✅ INSURANCE VERIFICATION & PRIOR AUTHORIZATION ✔ Real-time eligibility and benefits verification before every appointment ✔ Identify coverage gaps before claims are ever submitted ✔ Submit and track prior authorizations for all procedure types ✔ Manage authorization renewals and expiration tracking ✔ Coordinate between providers and payers preventing revenue delays ✔ Handle pre-authorization for Medicare, Medicaid, and all commercial payers ✔ Verify patient demographics, copays, deductibles, and coverage limits ✅ SPECIALTIES I SERVE Behavioral Health • Mental Health • Psychiatry • Psychology • Therapy & Counseling • Pediatrics • Family Medicine • Primary Care • Internal Medicine • Pain Management • Physical Therapy • Occupational Therapy • Speech Therapy • Cardiology • Neurology • Dermatology • Podiatry • Urology • Urgent Care • Home Healthcare • DME • OB/GYN • Gastroenterology • Radiology ✅ SOFTWARE & CLEARINGHOUSES AthenaOne • Kareo/Tebra • eClinicalWorks • AdvancedMD • Office Ally • SimplePractice • CollaborateMD • DrChrono • Practice Fusion • TherapyNotes • RXNT • NextGen • ModMed • WebPT • CureMD • Epic • Cerner • Medisoft • Availity • Change Healthcare • Waystar • Trizetto • ClaimMD ✅ PAYERS I WORK WITH Medicare • Medicaid • Blue Cross Blue Shield • Aetna • UnitedHealthcare • Cigna • Humana • Tricare • Molina • WellCare • Oscar Health • All major commercial payers ✅ WHY CLIENTS CHOOSE ME ✔ HIPAA-Certified — fully compliant with all U.S. billing regulations ✔ Top Rated Plus with $100K+ earned and 9,000+ hours on Upwork ✔ 94% Job Success Score with consistent 5-star client reviews ✔ 95%+ clean claim acceptance rate maintained across all clients ✔ 0–4 hour average response time — available full-time ✔ Deep expertise across Medicare, Medicaid, and all commercial payers ✔ Proactive communication — you always know your claim status ✔ I work as a seamless extension of your billing team ✅ WHAT CLIENTS SAY ✔ "Highly responsive — our denial rate dropped significantly after Hamid joined." ✔ "Best AR recovery specialist we have worked with on Upwork." ✔ "Integrates seamlessly into our billing team — highly recommend." ✔ "Excellent attention to detail with payment posting and follow-up." Is your practice struggling with unpaid claims, aging AR, or authorization delays? Let's connect today. 📩 Message me now — I respond within 4 hours and am available to start immediately.

Need payroll that goes out accurately and on time, every cycle? That is what we do best. At PayAdvisors, you are not hiring one freelancer. You are bringing on a full payroll and HR team that owns the whole process, from running each pay run to staying ahead of tax filings and multi-state compliance. We work inside the systems you already use, so nothing skips a beat during the transition. Our team includes former ADP specialists and PHR and SHRM-CP certified HR pros with decades of combined experience. We support clients on ADP Workforce Now, Gusto, Paylocity, and Rippling, and we are comfortable with the cases that trip up most providers, like California final pay rules and multi-state setups. Payroll is our core focus. When you need it, we also cover the full HR side: onboarding, offboarding, benefits administration, policy guidance, employee relations, and compliance audits. One team, one point of contact, everything handled under one roof. Whether you want to hand off payroll completely or add backup to your current setup, we make the switch seamless and keep it that way. Send a message and we can set up a quick call to map out exactly what you need.

I’m a healthcare billing professional with over four years of experience in claim submission, payment posting, and denial management. I help clinics, private practices, and healthcare providers improve their revenue cycle by keeping claims accurate and reimbursements on time. I’ve worked with both private and government payers and have strong knowledge of payer rules, HIPAA compliance, and EHR systems such as ZOLL EHR. I also completed a Bachelor’s in Healthcare Administration from Western Governors University, where I gained additional training in healthcare operations and compliance. If you need reliable support for your billing process, claims follow-up, or payment reconciliation, I can help you stay organized and get results quickly.

Full-stack developer based in San Francisco (PST). I take founders from idea to a live, production app, fast, and with senior-level execution. In the past year I've shipped 5 products end-to-end: • ChekBack - a receipt-cashback app • PhotoOffice - an AI passport-photo service • ChessTourism - a chess-tournament platform • Pluto - a field-service management system for home-service companies • MotoSocial - a social network for motorcyclists Each one went from concept to deployment, including auth, payments, integrations, and infrastructure. Why clients work with me: • US-based, real-time overlap with your business hours • Native, clear English on calls and in writing • Senior delivery - I ship working software, not just plans • I stay with you until your app is published - I never leave you alone with your issues or concerns • Warranty after delivery - if something breaks on my work, I fix it, no extra charge Core stack: React, React Native, Next.js, TypeScript, Node.js, PostgreSQL. Also: Python (FastAPI/Django), Expo, Redis, AWS/Hetzner/Cloudflare, CI/CD, REST & GraphQL, CRM and third-party integrations. Best fit for: founders and startups who need an MVP or full product built right, the first time. Send me your idea and I'll reply with a rough scope and timeline. No charge.

𝗜𝘀 𝘆𝗼𝘂𝗿 𝗽𝗮𝘆𝗺𝗲𝗻𝘁 𝘀𝘆𝘀𝘁𝗲𝗺 𝗰𝗼𝘀𝘁𝗶𝗻𝗴 𝘆𝗼𝘂 𝗺𝗼𝗻𝗲𝘆 𝗮𝗻𝗱 𝗰𝗮𝘂𝘀𝗶𝗻𝗴 𝘀𝗹𝗲𝗲𝗽𝗹𝗲𝘀𝘀 𝗻𝗶𝗴𝗵𝘁𝘀? Let’s turn that stress into success. With over 20 years of experience as a seasoned FinTech leader and Global CTO specializing in 𝗣𝗮𝘆𝗺𝗲𝗻𝘁 𝗚𝗮𝘁𝗲𝘄𝗮𝘆 𝗜𝗺𝗽𝗹𝗲𝗺𝗲𝗻𝘁𝗮𝘁𝗶𝗼𝗻, 𝗔𝗣𝗜 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻, and 𝗦𝘂𝗯𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻 𝗛𝗮𝗻𝗱𝗹𝗶𝗻𝗴, a proven track record awaits you. Payment systems have been built and optimized to not only meet today's demands but also scale with your business tomorrow—delivering over 𝗨𝗦𝗗 𝟮𝟬𝗠 𝗶𝗻 𝗿𝗲𝘃𝗲𝗻𝘂𝗲 𝗳𝗼𝗿 𝟭𝟬+ 𝗰𝗼𝗺𝗽𝗮𝗻𝗶𝗲𝘀 and powering 200+ successful app launches worldwide. 𝗪𝗵𝗮𝘁 𝗜 𝗕𝗿𝗶𝗻𝗴 𝘁𝗼 𝘁𝗵𝗲 𝗧𝗮𝗯𝗹𝗲: 𝟭. 𝗘𝘅𝗽𝗲𝗿𝘁 𝗣𝗮𝘆𝗺𝗲𝗻𝘁 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀: Mastery in integrating 𝗦𝘁𝗿𝗶𝗽𝗲, 𝗦𝘁𝗿𝗶𝗽𝗲 𝗖𝗼𝗻𝗻𝗲𝗰𝘁, and other payment gateway APIs, ensuring secure, efficient, and scalable payment systems. 𝟮. 𝗦𝘂𝗯𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻 & 𝗧𝗿𝗮𝗻𝘀𝗮𝗰𝘁𝗶𝗼𝗻 𝗟𝗼𝗴𝗶𝗰: Proven expertise in handling recurring payments, multi-invoice payments, partial payments, and complex scenarios like payment failures, refunds, and voiding transactions. 3. 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗟𝗲𝗮𝗱𝗲𝗿𝘀𝗵𝗶𝗽 & 𝗦𝘁𝗿𝗮𝘁𝗲𝗴𝘆: Adept at leading cross-functional teams, communicating with C-level executives, and transforming technical challenges into robust, revenue-generating solutions. 𝟰. 𝗛𝗮𝗻𝗱𝘀-𝗢𝗻 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲: Whether you’re dealing with broken software systems or planning a complete digital transformation, startups and enterprises alike have seen at least a 𝟭𝟬% 𝗶𝗺𝗽𝗿𝗼𝘃𝗲𝗺𝗲𝗻𝘁 𝗶𝗻 𝗲𝗳𝗳𝗶𝗰𝗶𝗲𝗻𝗰𝘆 𝗮𝗻𝗱 𝗽𝗿𝗼𝗳𝗶𝘁𝗮𝗯𝗶𝗹𝗶𝘁𝘆 through these solutions. 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗘𝘅𝗰𝗲𝗹𝗹𝗲𝗻𝗰𝗲 𝗶𝗻 𝗣𝗮𝘆𝗺𝗲𝗻𝘁 𝗣𝗿𝗼𝗰𝗲𝘀𝘀𝗶𝗻𝗴: Leveraging cutting-edge payment processing protocols — 𝗣𝗖𝗜-𝗗𝗦𝗦 𝗰𝗼𝗺𝗽𝗹𝗶𝗮𝗻𝗰𝗲, 𝘁𝗼𝗸𝗲𝗻𝗶𝘇𝗮𝘁𝗶𝗼𝗻, 𝗲𝗻𝗱-𝘁𝗼-𝗲𝗻𝗱 𝗲𝗻𝗰𝗿𝘆𝗽𝘁𝗶𝗼𝗻, and 𝟯𝗗 𝗦𝗲𝗰𝘂𝗿𝗲 𝗶𝗺𝗽𝗹𝗲𝗺𝗲𝗻𝘁𝗮𝘁𝗶𝗼𝗻𝘀 — ensures sensitive data is safeguarded and fraud risks are mitigated. Expertise in configuring 𝗣𝗮𝘆𝗺𝗲𝗻𝘁 𝗜𝗻𝘁𝗲𝗻𝘁𝘀, 𝗦𝗲𝘁𝘂𝗽 𝗜𝗻𝘁𝗲𝗻𝘁𝘀, and utilizing 𝘄𝗲𝗯𝗵𝗼𝗼𝗸𝘀 for real-time event handling optimizes 𝗦𝗖𝗔 flows, manages decline handling and chargebacks, and ensures seamless reconciliation across multiple payment channels. A deep understanding of card network rules, risk management strategies, and automated dunning processes guarantees that payment operations remain both resilient and highly efficient. 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 𝗶𝗻 𝗜𝗻-𝗔𝗽𝗽 𝗣𝘂𝗿𝗰𝗵𝗮𝘀𝗲 𝗛𝗮𝗻𝗱𝗹𝗶𝗻𝗴: Extensive experience with 𝗶𝗻-𝗮𝗽𝗽 𝗽𝘂𝗿𝗰𝗵𝗮𝘀𝗲 systems on both 𝗚𝗼𝗼𝗴𝗹𝗲 𝗣𝗹𝗮𝘆 and 𝗔𝗽𝗽𝗹𝗲 𝗔𝗽𝗽 𝗦𝘁𝗼𝗿𝗲 platforms complements robust payment gateway integrations. Successfully blending these in-app purchase mechanisms with 𝗦𝘁𝗿𝗶𝗽𝗲 creates a unified payment ecosystem that supports subscriptions, one-time purchases, and cross-platform transactions. Notable projects include 𝗦𝘁𝗿𝗲𝗮𝗺𝗶𝗹𝘆 and 𝗕𝗿𝗮𝗶𝗻𝗧𝗮𝗽, where in-app purchase flows were seamlessly integrated with backend payment processing to optimize revenue and enhance user experience. 𝗛𝗶𝗴𝗵𝗹𝗶𝗴𝗵𝘁𝘀: 𝟭. 𝗚𝗹𝗼𝗯𝗮𝗹 𝗜𝗺𝗽𝗮𝗰𝘁: Solutions delivered have scaled workforces and revenues — streamlining processes and reducing monthly costs dramatically (e.g., cutting costs from $𝟭𝟲𝟬,𝟬𝟬𝟬 𝘁𝗼 $𝟱𝟬,𝟬𝟬𝟬). 𝟮. 𝗥𝗲𝘀𝘂𝗹𝘁𝘀-𝗗𝗿𝗶𝘃𝗲𝗻: Engagements have doubled revenue for companies like 𝗕𝗿𝗮𝗶𝗻𝗧𝗮𝗽 and contributed to a 𝟵𝟵.𝟲% 𝗰𝗿𝗮𝘀𝗵-𝗳𝗿𝗲𝗲 𝗿𝗮𝘁𝗲, leading to over 𝟭𝟬,𝟬𝟬𝟬 𝗱𝗼𝘄𝗻𝗹𝗼𝗮𝗱𝘀 and high user ratings. 𝟯. 𝗜𝗻𝗻𝗼𝘃𝗮𝘁𝗶𝗼𝗻 & 𝗔𝗴𝗶𝗹𝗶𝘁𝘆: Continuously integrating the latest tools—from 𝗔𝗜 𝗶𝗻𝗻𝗼𝘃𝗮𝘁𝗶𝗼𝗻𝘀 like ChatGPT and DeepSeek to advanced mobile app development frameworks — ensures clients remain ahead of the curve. 𝗖𝗼𝗺𝗽𝗹𝗶𝗮𝗻𝗰𝗲 & 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆: PCI-DSS | SOC2 | HIPAA | GDPR 𝗪𝗵𝘆 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲? Partner with an expert who delivers tangible results, allowing you to focus on business growth. If you're ready to stop wrestling with payment integration issues and start experiencing streamlined, profitable operations, let's connect. Book a Consultation Today.