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Hi, I’m Arpan a Fintech expert. I help FinTech startups and financial platforms build secure, scalable, and integration-heavy products across banking, payments, lending, onboarding, and financial automation. I bring 15+ years of experience in FinTech product development and consulting, with hands-on work across Open Banking APIs, ACH flows, KYC/AML integrations, lending systems, and financial infrastructure. Clients usually work with me for three reasons: 1. Deep FinTech specialization I focus specifically on FinTech, which means I understand the product, compliance, integration, and operational complexity involved in building financial applications. 2. Strong integration experience I have worked with leading FinTech APIs and platforms such as Plaid, Dwolla, Finicity, Marqeta, Alloy, Onfido, Persona, Equifax, TaxJar, ADP, and others to build reliable and compliant user experiences. 3. Practical delivery mindset I help clients move faster by combining product thinking, technical execution, and real-world experience in security, privacy, and compliance-sensitive environments. What I can help you build : FinTech Product Development Services Banking App Development Digital Banking Platform Development Trading App Development Investment Platform Development Lending Platform Development Loan Origination & Loan Management Systems Payment Platform Development ACH & Payment Gateway Integration Embedded Finance Products Wealth Management Platforms Personal Finance Applications Financial Dashboard Development Expense Management Platforms Accounting & Payroll Integrations KYC / AML / Identity Verification Systems Banking API & Open Banking Integrations FinTech Mobile App Development Financial Web Application Development API Integration & Middleware Development Core integrations and platforms : Banking / Open Banking / Payments Plaid, Dwolla, Finicity, ACHQ, Marqeta, YapStone Lending / Credit / Servicing Encompass, Canopy Servicing Identity / Compliance / Risk Alloy, Certn, Checkr, Persona, Onfido, Equifax Investment / Trading Alpaca Stocks API Tax / Payroll / Back Office TaxJar, ADP Payroll, Paychex Tech stack : Front-end - Javascript, React, Angular, NextJS) Backend - .NET Core, Java, Nodejs, Python, Go, PHP Mobile - React Native, Flutter, iOS API Management - apigee, Mulesoft Cloud - Azure, GCP, AWS, Railway DevOps - Kubernetes, GIT, Jenkins, Artifact Registry, Argo Database - PostgreSQL, MySQL, Oracle, Mongo UI/UX - Figma, Framer Cache: Redis Cache, KeyCloak RBAC, OpenKM DMS Logging: ELK, EFK, Grafana Search: Apache Solr Firewall: Cloud Armor, GCP Baston Why clients hire me : Strong FinTech domain knowledge Experience with API-heavy financial products Security- and compliance-aware development Clear communication and reliable execution Ability to work from idea to production I’ve contributed to products in areas such as lending, payments, wealth management, tax workflows, freelancer finance, and financial wellness. If you need a developer who understands both FinTech product logic and technical execution, I’d be glad to discuss your project. Let's connect to discuss your Fintech Product.

🎯 ABOUT ME I build full-stack web apps and AI-powered automation workflows for startups. Tech stack: React, Next.js, Node.js, NestJS → Vercel & Supabase for real-time features. Specialized in n8n automation, RAG pipelines (Qdrant, LLMs), and AWS deployments. 6 clients, 6 projects completed. Direct contractor with a track record of delivering production-grade solutions that solve real business problems—not just code. ⚡ WHAT I DELIVER 🤖 AI & Automation Workflows → Design & build n8n workflows (APIs, webhooks, error handling, retries) → Create RAG pipelines (embeddings, vector DBs, LLM integrations) → Automate business processes: data ingestion, ETL, document processing, multi-step approvals 💻 Full-Stack Web Applications → React / Next.js frontends (SSR, SSG, responsive, accessible) → Node.js / Express backends (REST APIs, microservices, real-time systems) → Cloud-native architectures on AWS (EC2, Lambda, RDS, S3, SQS/SNS) 💾 Real-Time Database Solutions → Build real-time features with Supabase (presence, broadcast, Postgres changes) → Combine Supabase with Next.js for instant data sync → Scalable auth & row-level security architectures ⚙️ Scalability & Performance → Clean code architecture, CI/CD pipelines (GitHub Actions), Docker containerization → Database design (PostgreSQL, MongoDB, Supabase) → Security best practices (IAM, HIPAA-conscious data handling) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✨ RECENT PROJECT HIGHLIGHTS ✓ WhatsApp AI Agent + RAG — Integrated document upload, Gemini/OpenAI embeddings, Qdrant vector storage, Cohere reranking. Delivered answers via WhatsApp with <2s latency. ✓ Multi-Tenant SaaS Dashboard — Role-based access control, modular architecture, dynamic module loading. Scaled to handle healthcare workflows with HIPAA compliance. ✓ n8n Automation on AWS — Deployed error-handling workflows with logging, retries, and idempotency. Reduced manual workload by 70%. ✓ Full-Stack Health Platform — ETL pipelines, real-time Supabase features (presence, broadcast), optimized PostgreSQL queries. 35% load time improvement after migration to Next.js SSR. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🔧 TECH STACK Frontend: React, Next.js (SSR/SSG), TailwindCSS, TypeScript Backend: Node.js, Express, NestJS, REST APIs AI & Automation: n8n workflows, OpenAI, Gemini, Qdrant, Cohere, RAG pipelines Cloud & DevOps: AWS (EC2, Lambda, RDS, S3, SQS, SNS), Vercel, Supabase, Docker, GitHub Actions Databases: PostgreSQL, MySQL, MongoDB, Supabase Other: Git/GitFlow, ETL pipelines, OCR, audio transcription ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 💡 WHY WORK WITH ME → Direct communicator — No fluff. I understand your requirements and deliver what you ask for. → Production-ready code — Built to scale. Clean, tested, documented. → Problem solver — I don't just code features; I solve business problems. → Available for long-term partnerships — Most clients work with me on multiple projects. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🚀 LET'S BUILD Ready to discuss your project? Message me with: 1. What you're building 2. Timeline & budget 3. Key technical requirements Let's turn ideas into working software. 𝐅𝐢𝐧𝐝 𝐦𝐞 𝐰𝐢𝐭𝐡 𝐭𝐡𝐞 𝐤𝐞𝐲 𝐰𝐨𝐫𝐝𝐬 𝐛𝐞𝐥𝐨𝐰: API, RESTful API, GraphQL, API Integration, AWS Lambda, Amazon Web Services, Docker, Git, GitHub, GitFlow, CI/CD, Agile Software Development, JavaScript, TypeScript, ECMAScript, React, Redux, Next.js, Angular, Tailwind CSS, Bootstrap, HTML, HTML5, CSS, CSS3, Sass, Node.js, Express.js, NestJS, Prisma, Supabase, PostgreSQL, MySQL, MongoDB, DynamoDB, SQL, NoSQL, Microservices, Serverless Architecture, Event-Driven Architecture, AWS SQS, AWS SNS, AWS EC2, AWS S3, IBM Cloud, IBM Watson, ETL Pipelines, Automation, n8n, Webhooks, Web Development, Web Applications, Landing Pages, Responsive Design, UI/UX, Figma to Code, Performance Optimization, SEO Optimization, User Authentication, JWT, OAuth2, Testing, Jest, End-to-End Testing, API Security, Cloud Deployment, Server-Side Rendering, SSR, Static Site Generation, SSG, SaaS Development, Data Processing Pipelines

Software engineer with 10+ years across full-stack web, mobile work, enterprise apps, and data engineering. Most of my backend work is in Python (FastAPI mainly, some Django) and Node.js, with a fair amount of C# / .NET and PHP / Laravel on enterprise projects. On the frontend I work in React/React Native with TypeScript. A good portion of my recent work has been on Microsoft Dynamics 365 and the Power Platform - writing C# plugins and custom workflows, and a lot of client-side JavaScript for form scripts, ribbon buttons, and web resources to handle business logic the out-of-the-box config can't cover. On the data side I build ETL pipelines, data warehouses, and reporting dashboards. I use Spark when the volume justifies it and Airflow to keep the pipelines running on schedule. Day to day I work across MS SQL Server, MySQL, and PostgreSQL. For reporting I mostly deliver in Power BI, and Tableau when the client is already on it. I care about code that's fast, doesn't break in production, and is easy for the next person to pick up. Happy to jump on a quick call to talk through what you need.

Hi, I’m Mehul, a Top-Rated-Plus AWS Expert and DevOps Engineer who helps startups and founders launch and scale reliable SaaS, healthcare, and fintech platforms on AWS. ✅ Top 1% Upwork Freelancer ✅ 125+ Projects Completed ✅ 7000+ Hours Worked ✅ Top-Rated Plus on Upwork ✅ AWS Certified Developer - Associate 🏆 🏆 I’ve designed systems serving 2M+ users, built HIPAA-compliant healthcare apps, and helped teams cut cloud bills by 30–40 % without compromising performance. My focus is simple: build it once, make it scale, and keep your costs under control. ✅ What I Do ➥ Architect secure, serverless AWS setups using Lambda, API Gateway, and DynamoDB ➥ Deploy AI Agent to AWS with Bedrock ➥ Automate deployments with Terraform, GitHub Actions, and CodePipeline ➥ Optimise infrastructure for speed, uptime, and cost 💡 Why Work With Me ➥ 7+ years in AWS DevOps ➥ $300 K+ earned on Upwork, 100 % Job Success Known for clear communication, quick delivery, and long-term reliability Let’s connect if you’re building a product and want an AWS setup that’s secure, scalable, and easy to manage so you can focus on growing your business while I handle the cloud. Experienced with Amazon EC2, S3, RDS, Aurora, DynamoDB, ElastiCache, CloudFront, API Gateway, Step Functions, EKS, Fargate, CodePipeline, CodeBuild, CloudWatch, Grafana, Prometheus, GuardDuty, Security Hub, AWS Organisations, SCPs, KMS, Secrets Manager, IAM, WAF, Route53, ACM, Amplify, SageMaker, Bedrock, OpenSearch, and CloudFormation. Python, Bash, TypeScript, Node.js, Docker, Kubernetes, GitHub Actions, GitLab CI, Jenkins, n8n, Zapier.

Amazon SP-API and Amazon Ads API expert building production integrations, data pipelines, MCP servers, and advertising automation for marketplace sellers and SaaS teams. I am an Amazon approved third party developer with PII access, 100% Job Success, and more than 900 Upwork hours. I replace spreadsheets, manual exports, and unreliable integrations with production systems that include official OAuth, logging, retries, monitoring, approvals, documentation, and a clear audit trail. WHAT I BUILD • Amazon SP-API integrations for orders, inventory, listings, finances, returns, reports, notifications, and multi-account applications. • Amazon Ads API systems for campaign reporting, Marketing Stream, search term analysis, budget and bid rules, and guarded write automation. • Private MCP servers and AI command centers for Claude or Codex. My largest production build connects Seller Central, Amazon Ads, Google Ads, and ShipStation through 130 tools. It supports an advertising account with 177,000 keywords through an approval queue. • Data pipelines and warehouses. I ingest Amazon SP-API, Amazon Ads API, Shopify, and Mercado Libre into BigQuery or PostgreSQL. One analytics build removed about six hours of weekly manual reconciliation for each analyst. • PPC and repricing automation. I build wasted spend audits, search term review, Buy Box monitoring, pricing strategies, and approval workflows. Changes are previewed and approved before they reach the account. • Complete products. I built RepriceLab, a Buy Box repricer used across more than 12 Amazon marketplaces by paying subscribers. SELECTED WORK • Andy Anand Chocolates: 130 tool AI command center covering Seller Central, Amazon Ads, Google Ads, and ShipStation. • HeadBlade: OAuth MCP server and BigQuery warehouse covering orders, listings, finances, and returns across four marketplaces. • SellAnalytix: real time Amazon analytics combining SP-API, Marketing Stream, and warehouse data. • Kapow Meggings: unattended daily Amazon and Shopify listing audits with workbook reporting. • Gun Planet: two way Shopify inventory and order synchronization for a regulated marketplace. • DeLuca Consulting: Amazon Ads operations supported by custom command center tooling. SECURITY I am an Amazon approved third party developer with PII approval. Access uses Amazon's official authorization flow. Clients never share passwords. Access can be revoked in Seller Central, and every write action is logged. STACK Amazon SP-API · Amazon Ads API · Amazon Seller Central · API Integration · API Development · MCP · Python · FastAPI · TypeScript · PostgreSQL · BigQuery · AWS · Google Cloud · Shopify Send me the integration, report, advertising workflow, or reconciliation problem your team needs to fix. I will reply within one business day with a diagnosis and a fixed scope proposal. Based in Montevideo, Uruguay. I work in US time zones and speak native English and Spanish.

As an AWS Advanced Tier Partner and Claude Partner, we help startups and enterprises design, build, deploy, and scale reliable AI solutions. ✅ AWS Advanced Tier Partner ✅ Claude Partner ✅ Enterprise AI Specialists ✅ Production-Ready AI Solutions ✅ Secure & Scalable Architecture ✅ Strong AI + Cloud Engineering Team ---------------------------------- Common Use Cases ---------------------------------- Automating legacy business workflows using GenAI and AI Agents Designing and building custom MCP (Model Context Protocol) servers Connecting legacy databases to MCP servers Building custom MCP tools for enterprise applications Connecting CRMs, ERPs, APIs, and internal systems to AI Developing AI agents that can read, reason, and take actions Building multi-agent systems for complex business workflows Creating enterprise AI copilots for employees Building customer support AI assistants Developing Retrieval-Augmented Generation (RAG) applications Integrating AI with existing SaaS products Automating document processing, extraction, and classification Building AI-powered search across enterprise knowledge Creating voice AI agents and AI calling systems Modernizing enterprise applications with Amazon Bedrock, Claude, and OpenAI Building secure AI APIs and backend services Deploying scalable AI solutions on AWS ------------------------- Expertise ------------------------- AI Workflow Automation Automating legacy workflows using GenAI AI-powered business process automation Intelligent workflow orchestration Human-in-the-loop AI systems Agentic AI Production-ready AI Agents Multi-Agent Architectures AI Copilots Autonomous task execution Tool-using AI Agents Planning and reasoning workflows MCP (Model Context Protocol) Designing and building MCP Servers Building custom MCP Tools Connecting legacy databases to MCP Connecting CRMs, ERPs, APIs, and enterprise systems through MCP Secure enterprise MCP deployments Enterprise AI Integration Internal AI assistants Customer support AI Enterprise knowledge assistants AI integrated into existing applications RAG (Retrieval-Augmented Generation) Document Intelligence Intelligent Document Processing Contract extraction Invoice processing Medical document analysis Legal document processing PDF understanding Document classification and indexing Reliable AI Engineering AI Evaluation frameworks Prompt Engineering AI Guardrails AI Testing Reliable AI system design Continuous AI improvement AI Observability AI tracing Agent monitoring Workflow debugging Performance monitoring Production observability Cost optimization Production Deployment Amazon Bedrock implementations Claude integration OpenAI integration AWS deployment Scalable cloud architecture Production AI infrastructure Technologies Model Context Protocol (MCP) Claude Amazon Bedrock OpenAI Gemini LangGraph LangChain LangSmith CrewAI Python FastAPI Node.js AWS Lambda ECS EKS Docker Kubernetes Terraform Pinecone PostgreSQL MongoDB Redis n8n Whether you need to automate legacy workflows, build MCP servers, design Agentic AI systems, integrate AI into enterprise software, or deploy production-grade AI on AWS, we can help turn your AI vision into a reliable, scalable solution. Let's build AI that doesn't just answer questions—it gets work done.