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$40/hr
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Top Rated | 100% Job Success | $80K+ Earned | 2,900+ Upwork Hours | 14+ Years in .NET
I help businesses modernize, fix, and extend legacy applications built with MS Access, VBA, C#, .NET, and SQL Server.
With 14+ years of software development experience, I’ve spent years working on real-world business systems where reliability, data integrity, and backward compatibility matter.
My Upwork history includes 1,200+ hours on a custom enterprise eDiscovery/RSMF system, 790+ hours on a leasing management system, and 400+ hours on a long-term C#/.NET COM Interop to REST API project.
I can help with:
MS Access / VBA development and cleanup
Access → SQL Server migration
C# / .NET / ASP.NET Core development
Legacy application modernization
REST API development and integrations
SQL Server queries, performance and database design
COM Interop and integration with existing systems
JSON/XML/data transformation
OCR and document/data extraction
If you have an old application that works but is difficult to maintain, slow, unstable, or needs to integrate with modern APIs, that's exactly the type of system I can help with.
$35/hr
100%
Job Success
$400K+ earned
Available now
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Senior Software Architect (.NET + Azure + AI). I build SaaS platforms, AI-powered products, and Microsoft 365 solutions. 12+ years across .NET Core, C#, Python, OpenAI/RAG, SharePoint, and Power Platform for clients mainly in the US, Australia, the UK, and the Middle East.
• 100% Job Success • Top Rated Plus • 70% repeat clients
**I deliver three kinds of work at production quality:**
**1. .NET & Azure SaaS Platforms**
Scalable full-stack applications on .NET Core, C#, ASP.NET Core, Azure, React, Angular, Next.js, and TypeScript. I've built e-commerce systems with complex product configurators and payment gateways (Stripe, PayPal, Windcave), legal tech case management, healthcare platforms with FHIR compliance, and multi-tenant SaaS products. I own features end-to-end across database schema, API architecture, polished responsive frontends, and Azure deployment.
- Production work: Clarra (legal SaaS), Europcar (fleet management, 10+ integrated apps), NTC (e-commerce with custom configurator), PsychPlus (mental health platform), and BarcodeSync (modernized warehouse management).
**2. Generative AI & Intelligent Systems**
Production AI applications, not experiments. RAG systems with vector search (Qdrant, Pinecone), multi-agent chatbot platforms, voice AI with real-time speech-to-speech interaction, and LLM-powered automation workflows. Direct work with OpenAI, Anthropic Claude, LangChain, and LangGraph for prompt engineering, streaming responses, structured output parsing, and agentic architectures. AI backends on FastAPI and Python with proper async patterns and scalable Azure deployment.
- Shipped: Luri.ai (legal RAG), Flow AI (multi-agent WhatsApp platform), Ringlyy (AI voice calls), SFDA (bilingual regulatory chatbot), and a Medical VoiceBot with three-tier RAG fallback.
**3. SharePoint, Microsoft 365 & Power Platform**
SharePoint architecture (SPFx, PnP, REST, Graph API), Power Automate workflows, PowerApps (Canvas + Model-Driven), Power BI dashboards, and Azure AI integration with Microsoft 365. I've migrated legacy systems, built approval chains and document management workflows, and designed AI-enabled enterprise automation using Azure AI Foundry and Copilot.
- Shipped: Delivered for ECF (SharePoint + Power Automate + Azure OpenAI), Dolphin Energy Qatar (enterprise document management), Intrazone Portal (intranet collaboration), and Simonds Homes (8,600 InfoPath form migration to Power Automate).
Tech Stack
‣ Backend: C#, .NET 6/7/8, ASP.NET Core, Python, FastAPI, Django, Node.js
‣ Frontend: React, Angular, Next.js, Vue.js, TypeScript, Tailwind CSS
‣ AI/ML: OpenAI, Claude API, LangChain, LangGraph, RAG, Hugging Face, TensorFlow, scikit-learn
‣ Microsoft: SharePoint, Power Automate, Power Apps, Power BI, Graph API, Azure AI, Dynamics 365, Copilot
‣ Cloud: Microsoft Azure, AWS, Docker, Kubernetes, Azure DevOps, GitHub Actions
‣ Databases: SQL Server, PostgreSQL, MongoDB, Redis, Qdrant, Cosmos DB
‣ Integrations: Stripe, PayPal, WebRTC, FHIR, Kafka, OAuth, webhooks
What you get
‣ One senior engineer covering full-stack, AI, and Microsoft enterprise. No handoffs needed.
‣ Production-tested solutions across healthcare, legal, e-commerce, and professional services.
‣ Free consultations and honest technical recommendations.
‣ Fast execution with clean, maintainable, documented code.
Whether you need a .NET + Azure platform, a Microsoft 365 / SharePoint solution, or an AI-powered product, I deliver robust solutions tailored to the business problem, not the trendy tech stack.
Associated with
Nuclieos
$300K+
earned
$33/hr
100%
Job Success
$300K+ earned
Available now
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🥇 Top 1% Freelancer with 13+ years of experience, having delivered 120+ projects with 100% success score, without even a single 1-star review, sounds impactful, right?
🔝 Let's jump into this ultimate success boat.
⏩ My Full-Stack development experience includes C#, ASP.NET MVC, .NET Core, Angular, React, Node, and Flutter for mobile applications, overall I am capable of creating end-to-end systems that are performant, secure, and capable of scaling.
Here is an overview of the languages, frameworks, libraries, and design patterns I have worked with for Back-end Development:
✔️ C# .NET CORE (.NET 3.1 & .NET 6, .NET 8)
✔️ ASP.NET MVC & ASP.NET Web API (Entity Framework, SignalR, CQRS Pattern, Clean/SOLID Architecture, Three-layer architecture, Asynchronous Programming, Dependency Injection with Autofac/Unity, AutoMappers, Generics, API development, Repository pattern, Razor Syntax, Web Pages, State Management through sessions & JWT-based authorisation, SeriLog, Log4net, Error Handling)
✔️ API Development (Using ASP.NET Web API, .NET Core APIs, Node, Nest.js Framework, authentication & authorisation using JWT Web tokens, Passport.js, Firebase)
✔️ Cloud Platforms (Microsoft Azure, App/Cloud services, Redis cache, Service bus, Queues, SignalR, Azure SQL, App Insights, Azure Functions, Storage accounts, vNet integration, Azure DevOps, Google Cloud Platform (GCP), Amazon Web Services (AWS), Lambda, S3 Storage)
✔️ DevOPS (CI/CD using Azure DevOps & Github Workflows)
✔️ API Integration (Google API's integration including Google Authentication using oAuth 2.0, Google Drive APIs, Google My Business APIs, Places, Google Ads, Google Analytics, Calendar, Youtube, Pub/Sub. Payment API Gateways for Stripe, QuickPay, Cardcom, and CreditGuard. Integrated ChatGPT and Claude Sonnet 3.5 models into SaaS Web applications and in AI-Chatbots. API Integrations for Salesforce, Powerlink, HubSpot, Teamwork, Twilio, ZOHO CRM API, WhatsApp Business API, Freedcamp, Facebook Graph API, Twitter/X API, Spotify, Soundcloud, Zoom, and MS Teams API integrations etc.
✔️ Databases (MSSQL, Postgres, MySQL, Mongo, Firebase (Firestore), Azure Cosmos)
✔️ Extensive ErpNext Development (Python/JavaScript) in Frappe framework with integration of eBay APIs, Stripe and managing Shopify inventory inside ErpNext.
✔️ WPF (Windows Presentation Framework) for building desktop-based applications along with .NET MAUI app development.
For Front-end development, my strengths include:
✔️ Angular (Angular Universal or Server-side rendering, Typescript, analysing builds with bundlers for optimisation, crafting modules, working with routing, lazyloaded modules, authentication guards, HTTP services, standalone components, Angular Signals, shared services using RxJS, NgRX, localStorage, SignalR integration, PrimeNG, Angular Material UI and SyncFusion).
✔️ Reactjs (ReactDOM, Redux, React Router)/Next.js
✔️ Javascript (In a world full of front-end frameworks, we often forget the importance of underlying Javascript. I worked my way up from Javascript and jQuery to Angular back in 2016)
✔️ Web Design (CSS 3, Bootstrap, Tailwind, PrimeFlex, and Figma to Web Design)
For Mobile Applications, I primarily use Flutter with either Firebase/Supabase or custom API integration if not for SqlLite. Here's the summary of my experience with Flutter:
✔️ Flutter (Stateful/Stateless widgets, Providers especially Consumer/Select, ListViewBuilder, Push notifications based on the reminders, StreamBuilders, FutureBuilders, Flutter widget life-cycle, working with the data, Firebase & SqlLite, Shared-Preferences).
✔️ AI-Powered Chatbot Development using ChatGPT/OpenAI or Claude APIs.
✔️ MCP Server Integrations and Development
✔️ Agentive AI Applications - using a function or tool calling
✔️App deployments on both Google Play Store and Apple App Store
For Automations, I have used n8n (cloud-based and locally) extensively to create workflows, Zaiper (multi-step zaps, custom API integration, etc), Airtable, GHL Workflows, and make.com. To write automated scenarios, I have used Playwright and Selenium WebDriver.
I have written a lot of custom automations using AWS Lambda, GCP and Azure functions, which generally either use time triggers (called after a set interval) or HTTP-based triggers, used as Webhooks. Some of the automations that I have worked with
include Slack apps & integrations, Notion, Telegram, Pushbullet, performing sync on Shopify products and their variants in the background, sync to or from BigQuery offered by Google Cloud, updating CMS, writing auto posting on social media based on
a text-based prompt that generates an image using Gemini APIs and posts it on selected social media channels. Another example is automatically transferring Teams meeting recordings to a Google Drive folder using APIs or writing Google Sheets scripts to execute APIs and manipulate the returned response."
Ready to create something exceptional? Let's jump on a call
Associated with
Orbilon Technologies
$25/hr
100%
Job Success
$400K+ earned
Available now
Start of list.
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𝗜 𝗮𝗺 𝗮 𝗦𝗲𝗻𝗶𝗼𝗿 𝗳𝘂𝗹𝗹-𝘀𝘁𝗮𝗰𝗸 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 𝘄𝗶𝘁𝗵 𝟭𝟮+ 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 𝗰𝗼𝘂𝗽𝗹𝗲𝗱 𝘄𝗶𝘁𝗵 𝗲𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 in Python 3, FastAPI, Django/ Django REST Framework, Flask, JavaScript, NodeJS, ExpressJS, PHP/ Laravel, RESTful API, JWT(JSON Web Token), JSON, XML, Elasticsearch, Apollo/ GraphQL, AWS EC2, S3, ELB, REDIS, Amplify, Serverless Lambdas, Terraform, API Gateway, Azure, Google Cloud Platform, MySQL, Postgres, MongoDB, Supabase, Docker, Docker Swarm, Kubernetes k8, Microservices architecture, Linux, etc.
My expertise extends to HTML5, CSS3, jQuery, Vue.js, React.js, Next.js, Nuxt.js, Angular(up to version 19), Bootstrap 4/5, TailwindCSS, Material UI, SCSS, SASS, etc.
And, I have solid experience with DevOps, including CI/ CD, Git, etc. I'm proficient in Git for version control and utilizing Docker containers for seamless deployment.
𝗔𝗜 𝗧𝗼𝗼𝗹𝘀 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲: 𝗖𝘂𝗿𝘀𝗼𝗿 𝗔𝗜 | 𝗥𝗲𝗽𝗹𝗶𝘁 | 𝗟𝗼𝘃𝗮𝗯𝗹𝗲 | 𝗚𝗼𝗛𝗶𝗴𝗵𝗟𝗲𝘃𝗲𝗹 | 𝗔𝗶𝗿𝘁𝗮𝗯𝗹𝗲 | 𝗕𝗮𝘀𝗲 𝟰𝟰 | 𝗢𝗽𝗲𝗻𝗔𝗜 | 𝗛𝘂𝗴𝗴𝗶𝗻𝗴 𝗙𝗮𝗰𝗲 | 𝗖𝗹𝗮𝘂𝗱𝗲 | 𝗖𝗼-𝗣𝗶𝗹𝗼𝘁 |
𝗠𝘆 𝘃𝗮𝗹𝘂𝗲-𝗮𝗱𝗱𝗲𝗱 𝘀𝗸𝗶𝗹𝗹𝘀:
✅Ability to collaborate effectively with a team of developers, QA's, etc.
✅Excellent problem-solving and analytical skills.
✅Strong work ethic and attention to detail.
✅Ability to learn quickly and adapt to new technologies.
✅Regular meetings on project status/ updates.
✅Scrum, Kanban, Agile, Jira, Jenkins, Experience.
✅Degree in the Computer Science field.
I have used Git for version control for efficient collaboration, code versioning, branching, and merging. I also used platforms like GitHub, GitLab, and Bitbucket to provide additional collaboration features.
I am fluent in English and possess excellent written and verbal communication skills.
PS- As a full-stack Web & Mobile developer, I believe in complete transparency. My pricing is clear and upfront, no hidden fees, no surprise costs. I stand by my work with a portfolio of verified client reviews on Upwork that reflect consistent, honest delivery. When you're choosing a developer, trust and clarity should come standard, and that's exactly what I offer.
Let's connect.
Associated with
Impinge Software Solutions LLP
$10M+
earned
$30/hr
100%
Job Success
$60K+ earned
Available now
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120+ accounting and ERP integrations delivered. My biggest? A unified 6-platform accounting sync (QuickBooks Online, QuickBooks Desktop, Xero, NetSuite, Sage Intacct, Dynamics 365 Business Central) for Fraxion, an eProcurement SaaS used by 200,000+ users across 1,000+ companies. If your system needs to talk to an accounting or ERP platform, I have done it before.
What I build:
- Custom API integrations between your app/platform and accounting systems (QuickBooks, Xero, NetSuite, Sage, Dynamics 365, Zoho Books)
- eCommerce-to-accounting sync (Shopify, WooCommerce, Linnworks to QuickBooks/Xero)
- Invoice, payment, and financial data automation
- SaaS product integrations for companies that want to offer accounting connectivity to their users
- CRM-to-accounting workflows (HubSpot, Salesforce, Pipedrive to QuickBooks/Xero/NetSuite)
Recent projects:
- Cut manual data entry by 75% for a UK skincare brand by integrating Shopify, WooCommerce, HubSpot, Linnworks, Xero, and Stripe into one centralized platform
- Built NetSuite integration for Calxa, an Australian budgeting software used by 1,300+ businesses
- Automated multi-level tax reporting for a $5M IT company using QuickBooks Desktop
- Turned an Excel-based nonprofit finance workflow into a cloud SaaS app with QuickBooks Online integration in 9 months
- 57+ detailed case studies available in my portfolio below
How I work:
- Free 1-hour consultation on your integration challenge
- Detailed project estimate within 24 hours
- Fixed-scope or hourly, your choice
- Full documentation and source code handover included
- Post-launch support available
Tech stack:
Node.js, MERN, Python, .NET Core, PHP | AWS, Azure, GCP | n8n, Zapier, Make, Power Automate
Platforms I integrate:
Accounting: QuickBooks (Online and Desktop), Xero, Zoho Books, MYOB, Sage (50/100/200/300/Intacct/X3), Wave, FreshBooks
ERP: NetSuite, SAP, Microsoft Dynamics 365 / Business Central, Acumatica, Odoo
eCommerce: Shopify, WooCommerce, Magento, BigCommerce, Linnworks, Amazon, eBay
CRM: Salesforce, HubSpot, Zoho CRM, Pipedrive
I am the founder of Satva Solutions, a 15+ year integration-focused development firm. I personally lead every project from scoping through delivery. Send me a message or invite me to your job.
$70/hr
97%
Job Success
$300K+ earned
Available now
Offers consultations
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🏆 Top Rated Plus 🌟 100% Job Success 🤝 Satisfied Clients ⏱ Quick Turnaround 📞 Clear Communication
Why work with me?
Proven Experience:
💎 Backed by 15+ years of delivering results through scalable, cost-efficient data solutions.
Technical Expertise:
💎 AI-Data Architecture: I deliver real-world-ready data through automated, reliable pipelines. The new AI era requires a new data platform.
💎 Conversational Analytics & AI Agents: Enable users to chat with their data through AI-driven interfaces. Google Conversational Analytics API and Gemini Enterprise
💎 Data Visualization: Skilled in Looker, Looker Studio, Power BI, Tableau, Superset, and others.
💎 Data Web Portals: Skilled in developing custom embeddable solutions and full web platforms under your own brand and domain.
💎 Database Management: Expertise in SQL (BigQuery, SQL Server, Oracle, MySQL, PostgreSQL, Snowflake) and NoSQL systems.
💎 ETL: Experience with both streaming and batch pipelines using Airflow, Apache Beam, Kafka, Debezium, Pub/Sub, and others.
💎 Data Modeling: Proficient with dbt, Dataform, and PySpark.
💎 Version Control: Comfortable with Git-based tools (GitHub, Bitbucket, GitLab, Azure DevOps).
💎 Cloud Platforms: Certified and experienced in GCP, AWS, and Azure.
💎 Unstructured Data: JSON, XML, Excel, Google Sheets.
💎 GA4 Data: Google Analytics 4 for advanced analysis.
Soft Skills & Work Ethic:
💎 Versatile & Adaptive: Quick to learn new tools, roles, and business domains.
💎 Value-Driven: Focused on delivering high-impact outcomes with cost-efficiency.
💎 Detail-Oriented: Committed to precision and quality in every task.
💎 Reliable & Time-Conscious: Consistent delivery of high-quality work on time.
💎 Leadership: Capable of guiding teams and leading initiatives when needed.
💎 Analytical: Skilled at breaking down complex problems and finding effective solutions.
💎 Collaborative: Strong team player, effective in multidisciplinary environments.
Scalable Technical Capacity:
I’m supported by a network of 15+ specialists, including Solution and Data Architects, Developers, Designers, Process Specialists, DevOps Engineers, Machine Learning Engineers, Data Scientists, Data Analysts, and more.
We work collaboratively to ensure your project receives the strongest possible technical support, from strategy to execution.
How I approach projects:
- Kick-off meeting to review requirements and deliverables
- Action plan development using a project management tool
- Weekly demo meetings to showcase progress
- Detailed time and task tracking
- Continuous feedback loop to ensure alignment and improvement
- Complete documentation of the solution
$30/hr
100%
Job Success
$40K+ earned
Offers consultations
Start of list.
End of list.
AI+Odoo ERP Specialist | Functional + Technical Expertise | 17+ Years Experience
I help organizations to implement, customize, Automate, and scale Odoo ERP through structured functional consulting and clean technical architecture. I bring a combined background in business process mapping, solution design, custom module development, integrations, and multi-module Odoo delivery. My experience includes 80+ Odoo apps published on the official Odoo App Store and 50+ ERP implementations across industries and geographies.
My goal is simple: deliver Odoo systems that are stable, maintainable, and aligned with real-world business operations.
Core Areas of Expertise:
1. Functional Consulting & Implementation
- Requirement discovery, gap analysis, and solution design
- Process alignment for CRM, Sales, Inventory, MRP, Accounting, HR, Projects
- Cross-department workflow design and optimization
- End-to-end ERP rollout (Community & Enterprise)
2. Technical Architecture & Development
- Custom module design for complex workflows
- Backend and frontend development (Python, XML, JS)
- Multi-app architectures and large deployment structures
- Performance optimization and code refactoring
- API/REST integrations with third-party systems
3. Odoo Version Upgrades
- Migration planning
- Data migration, module compatibility, and regression testing
4. Integrations
Payment gateways, eCommerce platforms, marketplaces
CRMs, HRMS, accounting systems, external ERPs
Shopify, WooCommerce, Power BI, custom portals
5. Support & Stabilization
Post-implementation tuning
User training, documentation, and long-term support
System audits and corrective action plans
Functional Depth Across Odoo Modules
CRM & Sales – pipelines, quotation workflows, automated follow-ups
Inventory & Logistics – routes, multi-warehouse setups, barcode flows
Manufacturing (MRP) – BOMs, work centers, scheduling, QC, capacity planning
Accounting – multi-currency, reconciliation flows, tax localization
Projects & Services – task workflows, timesheets, planning
HR & Payroll – attendance, appraisals, payroll enhancements
Website & eCommerce – product catalogs, checkout flows, integrations
Industries Served
- Manufacturing (furniture, automotive, industrial components)
- Trading & distribution
- Professional services
- IT & SaaS
- Retail & eCommerce
- Logistics & field services
I design Odoo systems to match real industry processes, ensuring adoption and operational efficiency.
Technical Stack
- Odoo (Community & Enterprise)
- Python
- PostgreSQL
- XML
- JavaScript
- REST APIs
- Git | Docker
- Linux Servers
Delivery Approach
Requirement Understanding – stakeholder interviews, process review
Gap Analysis & Solution Blueprint – clear workflows and module design
Architecture & Development – modular, scalable, future-ready code
Iterative Delivery – short cycles, early feedback, transparency
UAT & Deployment – migration, configuration, documentation
Training & Support – long-term assistance and enhancements
This ensures predictable outcomes, minimized rework, and strong user adoption.
Professional Summary:
I serve as a Technical Architect at Zehntech, leading a team of 35+ Odoo professionals including functional consultants, developers, and QA engineers. My role involves solution architecture, code review, technical leadership, and ensuring delivery standards across complex multi-module Odoo projects.
I have architected 80+ apps published on the Odoo App Store, covering manufacturing, logistics, HR, finance, reporting, planning, and automation. This experience gives me a broad and deep understanding of both common and highly customized Odoo use cases.
Why Choose Me
- Strong dual capability: functional + technical
- Ability to translate business processes into robust Odoo workflows
- Proven experience across entire Odoo lifecycle
- Clarity in communication, documentation, and expectations
- Long-term partnership mindset with consistent delivery standards
- Extensive exposure to global ERP implementations and real business operations
Associated with
Zehntech Technologies
$800K+
earned
$35/hr
100%
Job Success
$200K+ earned
Available now
Offers consultations
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I build production systems enterprises run their business on: a corporate travel booking platform integrating Amadeus GDS with airline, hotel, and car-rental suppliers for institutional clients, and AIWI Team — a multi-tenant HRMS/project SaaS I founded. In 15 years I've shipped across travel, HRMS, eCommerce, and real estate, and I still write code every day.
Where I'm genuinely strong:
- Travel & GDS systems — Amadeus, Sabre, Galileo, plus non-GDS suppliers (AeroCRS, Radixx, Nightsbridge, Avis/Europcar). Booking flows, fare handling, supplier aggregation, PCI-aware payment integration.
- Enterprise integrations — NetSuite, SAP, Xero/QuickBooks, payment/SMS/email gateways, SSO (OAuth 2.0, SAML, Keycloak, Okta).
- SaaS architecture — multi-tenancy, RBAC, audit trails, and compliance-aware design (GDPR, POPIA, PCI-DSS).
- Modernization — Java 8→21 migrations, monolith→microservices on Spring Boot/Spring Cloud, AngularJS→Angular 17+ upgrades.
Core stack: Java (8–21), Spring Boot/Cloud/Security, Hibernate, Angular, React, PostgreSQL/MySQL, Kafka, Redis, Elasticsearch. DevOps: AWS (EKS, ECS, Lambda, RDS), Docker, Kubernetes, Terraform, Jenkins/GitLab CI, Prometheus/Grafana.
How I work: I'll tell you honestly if something is outside my depth, give estimates I can defend, and write code your next developer can maintain. Most of my client relationships run multi-year for that reason.
If your project involves travel tech, complex integrations, or scaling a Java platform, send me a message — I'll give you a straight assessment before either of us commits.
$40/hr
94%
Job Success
$500K+ earned
Start of list.
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⭐I have successfully delivered projects for leading global organizations and enterprises, including Ciena, Merck, Red Cross, ADT, SaskTel, Queensland Government, Toshiba, and McDonald's. ⭐
I specialize in challenges Innvoaite Solutions for Digital Human Interaction. High-Level System Architecture intelligent, scalable AI applications — from real-time LLM/NLP ingestion pipelines and low-latency streaming systems to retrieval-augmented generation (RAG), embeddings, and multimodal AI. My core stack includes Python, FastAPI, WebSockets, and distributed microservices for ultra-responsive AI agents, and I’ve recently expanded into Solana blockchain dApps, delivering production-ready token programs, LP integration, and on-chain transaction flows with enterprise-grade reliability.
🔹 Core AI & NLP Skills:
• LLM integration: OpenAI, Claude, HuggingFace Transformers, Twilio, ElevenLabs Apis
• Retrieval-Augmented Generation (RAG) with pgvector, Pinecone, and semantic chunking
• Whisper transcription with speaker diarization and sentiment analysis
• FastAPI backend services with real-time capabilities (SSE, WebSockets)
* SQL Database: Postgres (Supabase)
🔹 Solana Development:
• Built full-stack Solana NFT Mint + Purchase App with Phantom Wallet, SPL token transfer, and secure transaction feedback
• Minting & Token Programs using @solana/web3.js, @solana/spl-token, and Raydium LP pairing
• Integrated Phantom Wallet for Devnet/Mainnet, including environment-based .env support
• Experience with Solana Devnet workflows, sugar CLI, token locking, and liquidity pairing
🔹 Full-Stack Development:
• Frontend: React.js, Angular – responsive, production-grade UIs
• Backend: Python (FastAPI, Flask, Django)
• Database: PostgreSQL, Redis – optimized schema and queries
• DevOps: Docker, CI/CD, AWS (EC2, S3, ECS), GCP
* Lambda / Python: IVR, NLP, Data Layer, Infrastructure, Security & config, Observability, CI/CD
🔹 Commitment to Excellence:
I deliver production-ready, secure, and scalable solutions tailored to client needs. I offer post-launch support and continuous improvements to ensure long-term success.
Let’s connect to discuss how I can contribute to your project.
Thank you,
~ Saif
Associated with
Red Soft Systems 🇵🇰
$400K+
earned
$160/hr
98%
Job Success
$200K+ earned
Available now
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Yuriy S.
has worked
.
There's no such thing as impossible integration. I solve the API integration and payment automation projects other developers give up on, from legacy banking systems to blockchain and crypto payouts.
I bring 22+ years of 🌐 Web Development experience, including 18+ years with ⚙️ Custom PHP and 16+ years with 📝 WordPress and 🛠️ API Integration. I've built pipelines processing over 1,200,000 records at a time and connected systems ranging from 1974-era nacha banking files to modern stablecoin payout rails.
Based in Washington State, I work 30-45+ hours a week during American business hours and adapt fast to whatever a project requires.
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⚙️ CUSTOM SCRIPTING & AUTOMATION
Cron-based processing, data pipelines, CSV/blockchain reconciliation tools, web scraping, IMAP email automation, analytics dashboards (Chart.js, DataTables), Cloudflare Workers, Twilio SMS / A2P 10DLC. If you do it by hand twice a week, I'll script it to run itself - exactly on your schedule.
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🛠️ COMPLEX & CUSTOM API INTEGRATIONS
REST, SOAP, GraphQL, webhooks, JSON/XML, OAuth2, HMAC signatures, token refresh, rate limits, retries - the parts that break in production. From one-way pushes to full two-way synchronization, real-time or batch. Strong focus on authentication, error handling and personal data security. Pipelines processing 1,200,000+ records at a time with automatic updates down to the minute.
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💳 PAYMENT SYSTEMS DEVELOPMENT
Payment gateways and checkout flows: Stripe, PayPal, Square, First Data / Fiserv, Plaid, Seamless Chex, high-risk merchant gateways, subscription billing, ACH / NACHA files, webhook and chargeback handling, WooCommerce / WHMCS / Shopify gateway plugins. Crypto payments: USDC / PYUSD / stablecoin payout systems, multi-chain (Ethereum, Polygon, BSC), Web3, Coinbase, NowPayments, Etherscan, Tatum, on-chain reconciliation.
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Some API integrations I have experience with: Ahrefs API, Amazon API Gateway, Amazon AWS API, Amazon Lambda API, Amazon PA API, Amazon S3 API, Ankr API, Bank of America API, BigCommerce API, Brevo API, Bright Data API, ChatGPT API, Cloudflare API, Coinbase API, Detroit Trading API, Dukascopy API, Dynadot API, eBay Product API, Envato API, Ethereum API, Etherscan API, First Data API, Fiserv API, GoDaddy API, Google Places API, HubSpot API, Jobber API, Lead Prosper API, MaxMind API, Meta Marketing API, Modern Dropship API, NameSilo API, NowPayments API, OpenAI API, PayPal API, Plaid API, Polygon API, Polygon Scan API, Relograde API, RiskPay API, Round Sky API, Samsara API, Seamless Chex API, SendGrid API, Shopify API, Slack API, Square API, Stripe API, Supabase API, Tatum API, Thumbtack API, Trulia API, Twilio API, Web3 API, WhatsApp Cloud API, WooCommerce API, Zillow API, and more.
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There's a reason for my Job Success Score: I get it right the first time. If your last developer said it can't be done, send me the docs. Every automation I build saves you time and money from day one.