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$20/hr
96%
Job Success
$100K+ earned
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Senior API & Backend Developer | API Integrations, Automation & ETL
I help businesses build, integrate, and automate APIs that are secure, scalable, and production-ready.
With 10+ years of experience, I have delivered complex backend and integration projects for startups, agencies, and enterprises.
🔹 What I can do for you
- Design & develop RESTful APIs
- Third-party API integrations (payments, CRMs, analytics, maps)
- ETL pipelines & data synchronization
- Workflow automation to reduce manual work
- SSO & authentication systems
- Healthcare & enterprise-grade integrations
💼 Core Expertise
- API & Integrations
- REST APIs, Webhooks, Social Login
- Stripe, Braintree, Mailchimp
- Google Maps, Mapbox, GeoJSON, Leaflet
- Automation & ETL
- Zapier, Make.com, n8n
- MuleSoft, ServiceNow, Dell Boomi
- Power Automate, UiPath
- Healthcare APIs
- HL7, FHIR, SMART
- EPIC, Athena, eClinicalWorks
- HIPAA-compliant integrations
- SSO & Security
- OAuth 2.0, OpenID Connect
- SAML 2.0, Okta, Azure Entra ID
- AWS Cognito, Descope, Stytch
Backend & Databases
- Python (Django, Flask, FastAPI)
- Node.js, PHP, Laravel
- MySQL, PostgreSQL, MongoDB, DynamoDB
- Cloud & DevOps
- AWS, GCP, Serverless (Lambda)
- Docker, Kubernetes
⭐ Why clients work with me
✔ Clear communication & quick response
✔ Production-ready, well-documented code
✔ Long-term support mindset
✔ 100% payment only after work is completed
If you need a reliable backend or API expert who understands real business workflows, let’s connect and discuss your project.
Himanshu Panchal
Associated with
Freshlime Solutions
$30/hr
100%
Job Success
$70K+ earned
Available now
Offers consultations
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Need a python Full stack developer and Python AI Developer who can ship production-ready AI products, not just prototypes?
I'm Moin, a Python Full stack Developer and Python AI developer with 6+ years in scalable web development and 3+ years in AI/ML. I have built AI systems for skincare, corporate LMS, real estate and SaaS, including a multilingual assistant for a company with 100+ branches and an AI SaaS chatbot platform built over 11 months.
What I can help with:
✓ AI chatbot development with RAG, memory and business logic
✓ OpenAI / Claude / LLaMA integrations for SaaS, CRM, support, and internal tools
✓ AI agents trained on company documentation, knowledge bases, and enterprise data
✓ python fastapi API development for scalable AI backends
✓ React / Next.js dashboards connected to Python AI systems
✓ Database architecture, API integration, cloud deployment, and performance optimization
✓ Custom machine learning workflows, benchmarking, Data Scraping, data pipelines and analytics
:zap:My work combines python full stack engineering, python fastapi backends, LLM architecture and business-focused Software Development that reduces manual work and improves user experience. As a python full stack developer, I build full-cycle products from database design and API architecture to React / Next.js interfaces, deployment and long-term optimization. My core stack includes python full stack, Python Fastapi, Flask, Django, Node.js, React, JavaScript, TypeScript, PostgreSQL, SQL, MongoDB, Supabase, AWS, Azure, Vercel, REST APIs, WebSockets, Docker, Tailwind CSS, Material UI, and Git.
As a Python AI Developer, I create AI chatbots, RAG systems, AI agents, document intelligence tools, recommendation engines, and automation workflows. I work with OpenAI, Claude, LLaMA, LangChain, LangGraph, LlamaIndex, vector databases, prompt engineering, ReAct agents, and llm integration for real business use cases.
:robot_face: AI/ML Solutions I Build
:pushpin: LLM-Powered Applications
→ Custom AI chatbots with RAG (Retrieval-Augmented Generation)
→ Multi-agent systems using LangChain & LangGraph
→ Context-aware conversational AI that maintains conversation flow
→ Integration with GPT-4, Claude, LLaMA models
:pushpin: Intelligent Automation & Agents
→ ReAct systems (Reasoning + Acting) for complex workflows
→ Document parsing and knowledge extraction (LlamaIndex)
→ AI agents trained on internal documentation and enterprise data
→ Multi-language support with automatic language detection
:pushpin: Smart Recommendations & Analysis
→ AI-powered recommendation engines
→ Image analysis and classification systems
→ Custom ML models for specific business use cases
→ Performance optimization for production environments
:pushpin: Full-Stack Integration
→ RESTful API development and integration
→ Real-time data handling with WebSockets
→ Database design (PostgreSQL, MongoDB, Supabase)
→ Cloud deployment (AWS, Azure, Vercel)
:bulb: Recent AI Projects & Real Results
Recent work includes an AI skincare recommendation system that analyzes customer inputs and recommends products, a corporate LMS AI assistant for 100+ branches, a real estate rental assistant using landmarks and neighborhoods instead of only addresses, and a full-stack SaaS AI chatbot platform with multi-agent logic and RAG capabilities.
:hammer_and_wrench: Technical Stack
My experience covers product engineering and AI development. On the engineering side, I build SaaS platforms, dashboards, APIs, admin panels and automation systems as a python full stack developer ( backend python developer ) backend developer and web developer. On the AI side, I work as a Python AI developer and AI Developer, supporting chatbots, RAG systems, llm integration, OpenAI workflows, benchmarking, machine learning and data science tasks for real business use cases.
:zap:My approach is simple: clarify the business problem, design cost-conscious architecture, build clean and maintainable code, show progress through regular demos, and transfer knowledge so your team can use and maintain the system confidently.
Additional relevant experience: I have worked around startup products and teams involving laravel, PHP, wordpress, sharepoint, moodle lti, flutter, Vue.js, material ui, HTML5, html front end, payment gateway, back end development, full stack developer react, full stack java, marketing saas, mls, mls idx, real estate photo, ai video, crypto bot, trading python, dask, pandas, data entry, oxwall, qa analyst, ux designer, product manager, it consultant, seo specialist, journalist content workflows, technical resume writing, python full stack, python fastapi, python ai, llm integration, openai, and custom business automation.
:handshake:If you need a reliable python full stack developer who can own the full product workflow, or a python ai developer who can build practical AI systems with python fastapi, python ai, llm integration, openai, and scalable architecture, send me a message.
Moin K.
has worked
.
$25/hr
100%
Job Success
$50K+ earned
Offers consultations
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python scripting and scraping with req/resp on json, or selenium, or asyncio, single or multi thread, GUI development, unix sysadmin, network engineer security specialist, high ability in problem solving and tech analysis completely customer satisfaction oriented
Daniele R.
has worked
.
$25/hr
100%
Job Success
$10K+ earned
Available now
Offers consultations
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Need a production-ready AI developer who ships HIPAA-compliant SaaS and LLM platforms fast? I've delivered 10+ funded MVPs from ambient medical scribes to fintech compliance dashboards in weeks, not quarters.
What sets me apart is 8+ years bridging deep technical execution with business strategy. My background in large-scale data systems evolved into building the LLM-driven platforms of today so the AI I ship is faster, more reliable, and built on a foundation that survives investor due diligence. I've shipped 10+ MVPs that went on to raise funding, and I know exactly what a production codebase needs to look like.
Here's what I build:
🤖 AI & LLM Systems: Custom AI agents, multi-agent orchestration, LLM fine-tuning, and vector database integrations (Pinecone, Weaviate, FAISS) for complex business logic.
🏥 Healthcare AI: HIPAA-compliant ambient scribes, automated medical coding (ICD/CPT), and EHR integrations that reduce admin burden for clinical teams.
💳 Fintech Platforms: Secure, high-throughput payment dashboards and compliance systems built to regulatory standards.
🛠️ Full-Stack SaaS: Next.js, React, FastAPI, Django, Supabase, PostgreSQL — scalable to 10k+ users from day one.
⚙️ Automation: n8n, Make, and Zapier workflows that connect your CRM, ERP, and internal tools without custom code overhead.
When you hire me, you aren't just getting an engineer. You are getting an execution partner who has successfully shipped 10+ MVPs that went on to raise funding. I know what investors look for in a codebase, and I know what users demand in a UX.
Stop losing weeks to development delays. Let’s get your product into the hands of paying customers.
Send me a message with your project scope and I'll respond the same day. Let's schedule a strategy call this week and get your product moving.
Hamza K.
has worked
.
$20/hr
100%
Job Success
$400+ earned
Start of list.
End of list.
🚀 Full-Stack Web & Automation Developer
💡 Next.js • Python • UiPath • n8n • OpenAI/Gemini/Claude (LLM Integration)
👋 Need a developer who can build modern web apps, automate workflows, and integrate AI features using LLMs like GPT-4 or Claude?
I help businesses streamline operations, boost efficiency, and build scalable digital products — fast.
🔧 What I Offer:
✅ Full-Stack Web Apps
• Modern dashboards and responsive UIs (Next.js, Tailwind, Supabase)
• Backend logic, API integrations, and scalable architecture
✅ Scripting & Bots
• Web scraping (Selenium, Playwright, Puppeteer, bs4)
• Backend task automation, email parsing, reports, and more
✅ Workflow Automation
• UiPath, Power Automate, n8n, Zapier, Make – automate anything from simple tasks to complex business logic
• Data syncing, notifications, approval flows, API-based automations
✅ AI Integration with LLMs
• OpenAI / GPT-4 / Claude / Ollama
• Smart chatbots, AI-enhanced forms, document Q&A, semantic search
• LangChain, LlamaIndex, vector search (Pinecone, Weaviate, Supabase Vector)
🛠️ Tech Stack Highlights:
Next.js, React, Tailwind, Supabase, PostgreSQL
Python, Selenium, Playwright, BeautifulSoup
UiPath, Power Automate, n8n, Zapier
Puppeteer, Scrapy, Pandas, Numpy
🎯 Why Work With Me?
• End-to-end delivery: frontend, backend, automation, and AI — all in one
• Clear communication, clean code, and fast iteration
• I focus on scalable, maintainable, and intelligent solutions
📬 Let’s build something smart and powerful together.
Send me a message to discuss your project needs!
BERKAY YASIN C.
has worked
.
$30/hr
100%
Job Success
$200K+ earned
Available now
Offers consultations
Start of list.
End of list.
🚀 Senior AI Developer specializing in Python, LangChain, LLMs, RAG, AI Agents, SaaS applications, AWS, and API integrations.
Are you looking for AI Developer, LLM Engineer, LangChain Developer, RAG Developer, AI Agent Developer, Python Developer, AWS, SaaS, OpenAI API, and Machine Learning Engineer ?
I help startups and businesses build production-ready AI solutions using OpenAI, Anthropic, Gemini, LangChain, vector databases, RAG pipelines, and intelligent automation workflows. From custom chatbots and AI agents to scalable SaaS platforms and cloud deployments on AWS, I deliver reliable, high-performance solutions focused on business outcomes.
✅ Python Development
✅ Machine Learning Development
✅ LangChain & LLM Applications
✅ RAG & Vector Databases (Pinecone, FAISS, Chroma)
✅ AI Agents & Workflow Automation
✅ AWS Cloud Deployment
✅ REST APIs & Third-Party Integrations
✅ SaaS Product Development
✅ AI Application Development
✅ AI Chatbot Development
✅ Data Analytics & Dashboard Development
Building AI-powered SaaS applications, custom chatbots, RAG systems, AI agents, LLM integrations, cloud-native applications, and scalable backend solutions.
🛠 Skills and Expertise:
As a versatile professional, I offer expertise in various domains:
AI Development & Automation
• Design and develop AI-powered applications using Python, Large Language Models (LLMs), and modern AI frameworks.
• Build intelligent AI Agents, multi-agent systems, and workflow automation solutions to streamline business processes.
• Develop Retrieval-Augmented Generation (RAG) systems using vector databases such as Pinecone, ChromaDB, Weaviate, and FAISS.
• Integrate OpenAI, Claude, Gemini, Hugging Face, and other AI models into custom applications and enterprise workflows.
• Create AI chatbots, virtual assistants, document processing systems, knowledge bases, and customer support solutions.
• Build scalable AI SaaS products with secure APIs, cloud infrastructure, and production-ready architectures.
• Implement LangChain, LangGraph, CrewAI, AutoGen, and agent orchestration frameworks for advanced AI workflows.
• Design prompt engineering strategies, evaluation pipelines, and AI optimization workflows to improve model performance and reliability.
Software Engineering & Technical Guidance
• Develop robust backend systems, REST APIs, web applications, and automation tools using Python, FastAPI, Django, Flask, JavaScript, and SQL.
• Review, debug, and optimize code for maintainability, performance, scalability, and security.
• Design software architectures, microservices, and distributed systems following industry best practices.
AI, Machine Learning & Data Science
• Build NLP applications, recommendation systems, predictive analytics solutions, and custom machine learning models.
• Fine-tune, evaluate, and deploy machine learning and LLM-based applications for real-world use cases.
• Perform data cleaning, feature engineering, model evaluation, and experimentation to maximize business value.
Cloud, DevOps & Infrastructure
• Deploy and manage AI applications on AWS, Azure, and GCP.
• Build CI/CD pipelines, Docker containers, Kubernetes deployments, and scalable cloud-native architectures.
• Implement Infrastructure as Code (Terraform, Ansible) and monitoring solutions using Prometheus, Grafana, ELK Stack, and cloud-native services.
Data Engineering & Databases
• Design and optimize SQL, NoSQL, vector, and graph databases for high-performance applications.
• Build ETL/ELT pipelines using Apache Airflow, DBT, Apache Spark, and modern data engineering tools.
• Design scalable data warehouses and analytics platforms using Snowflake, BigQuery, Redshift, and other cloud data solutions.
I help startups, SaaS companies, and enterprises transform ideas into production-ready AI products that deliver measurable business impact.
🚀 My Commitment:
I am committed to crafting customized solutions, from user-friendly websites to powerful apps and innovative AI applications. Your satisfaction is my top priority, and I aim to exceed your expectations. If you have any questions or wish to explore how we can collaborate, please feel free to reach out.
Thank you for considering my expertise.
Best regards,
Rimjhim
Rimjhim K.
has worked
.
$35/hr
100%
Job Success
$3K+ earned
Available now
Offers consultations
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Senior Python Backend & AI Engineer with 7+ years of experience building production-grade backend systems, APIs, and AI-powered features for startups and enterprise teams.
I help teams design, build, and scale reliable systems, not just write code. My focus is on clean architecture, performance, security, and long-term maintainability, so projects don’t become tech debt six months later.
What I typically help clients with:
Designing and developing scalable APIs using Django, FastAPI, Flask
Building AI/ML & LLM-powered features (LangChain, NLP pipelines, embeddings, automation)
Integrating third-party services (cloud platforms, internal tools, external APIs)
Improving performance, reliability, and system structure in existing backends
Taking products from prototype → production with proper architecture
How I work:
I ask the right technical questions early to avoid costly rework
I think in terms of business impact, not just implementation
I communicate clearly and proactively, no surprises, no black boxes
I write code that other engineers can understand and maintain
Most of my experience comes from long-term roles and private clients, where I’ve worked on complex systems end-to-end. I’m now selectively expanding my Upwork presence and partnering with teams that value senior-level execution and ownership.
If you’re looking for someone who can own backend decisions, ship production-ready solutions, and reduce risk, I’m happy to discuss your project.
Talha J.
has worked
.
$25/hr
100%
Job Success
$7K+ earned
Available now
Offers consultations
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AI systems should do more than just look impressive. They should automate workflows, improve decisions, and create measurable business value.
I’m an AI Automation Engineer with 5+ years of experience building AI agents, workflow automation systems, and production-grade Python applications.
I help startups and businesses automate operations using Python, n8n, FastAPI, RAG pipelines, OpenAI, LangChain, Django, and LLM-powered agent systems.
𝗥𝗲𝗰𝗲𝗻𝘁 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 𝗶𝗻𝗰𝗹𝘂𝗱𝗲:
⤷ AI-powered workflow automation systems
⤷ Custom GPT and LLM integrations
⤷ Backend APIs and SaaS platforms
⤷ Web scraping and data extraction pipelines
⤷ Time-series analytics and AWS-based systems
⤷ Internal AI tools and business process automation
𝐖𝐡𝐚𝐭 𝐈 𝐜𝐚𝐧 𝐡𝐞𝐥𝐩 𝐲𝐨𝐮 𝐰𝐢𝐭𝐡:
⤷ AI Automation & AI Agents
⤷ OpenAI / GPT Integrations
⤷ LangChain & LLM Applications
⤷ Python Backend Development (FastAPI, Django, Flask)
⤷ REST APIs & SaaS Architectures
⤷ Web Scraping & Data Pipelines
⤷ PostgreSQL, Redis, Celery, Docker, AWS
⤷ Deployment, Scaling & Performance Optimization
Python & AI Automation Stack
Python · FastAPI · LangChain · LangGraph · OpenAI · Anthropic Claude · n8n · PostgreSQL · Redis · ChromaDB · Docker · AWS · Supabase · Celery · RabbitMQ
💬 Why Clients Hire Me for AI Automation
⤷ Top-rated 5-star developer
⤷ Smooth communication and fast turnaround
⤷ Focused on long-term collaboration and clean code
Whether you need an AI MVP, AI agent, Python backend, automation platform, or custom AI workflow, I can help turn your idea into a reliable production-ready product.
📈 Let's build your next AI automation solution with performance, stability, and future scale in mind.
📩 Message me to discuss your project.
Also searched as: FastAPI developer, LangChain engineer, LangGraph developer, AI agent developer, n8n developer, RAG developer, agentic AI engineer, Python automation engineer, OpenAI integration developer, AI workflow automation engineer, backend API developer, LLM application developer, Python backend engineer, multi-agent system developer, n8n automation specialist, LangChain RAG developer, FastAPI backend developer, AI agent builder.
Bilal H.
has worked
.
United States
$120/hr
100%
Job Success
$200K+ earned
Offers consultations
Start of list.
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I provide automation services, web scraping and bots, API integrations, programmatic solutions to unique problems, and data extraction, mining, and analytics. I can help you find the right path and implement it.
I have experience deploying and orchestrating python solutions in both AWS and GCP.
I have experience building and demoing two POC OCR products for government agencies.
Services:
Automation consultations, design, and implementation
PDF extraction
OCR and image processing
-Custom AI models in AWS using Textract, Comprehend, and Augmented AI (A2I)
-Custom object detection
Web Scraping systems
Software Automation
-Browser based
-Desktop software
-Excel/Google Sheet
Data mining and extraction
-string matching, vector-based searching
API integration
Database design and build
-MS SQL Server, MySQL, PostgreSQL, MongoDB, Redis, Memcached
-MS SQL native python execution
-Custom SQL queries, stored procedures/functions, and triggers
Chat GP- driven workflows
Dockerized microservices
Email automation
Dashboards and Flask apps
Plotly Dash
Custom Trading solutions
-Interactive Brokers/Traders Workstation API
React SPAs
website: flowautomation.io
Key AWS services: ECS, Fargate, ECR, EC2, EFS, Textract, Comprehend, Augmented AI (A2I), Lambda, RDS, S3, and API Gateway
Key GCP services: Cloud Compute, Cloud Run, Cloud Function, Container Registry, Drive, BigQuery, and Maps/Locations APIs
Keywords: AWS, Lambda, Selenium, Dash, Python, MS SQL, PDF, Comprehend, Textract, A2I, Augmented AI, Comprehend, API, Automation, EDI, Selenium, Web Scraping, ETL, QuickFiX, FIX 4.4 protocol, Excel, wincom32, COM interface, fuzzywuzzy, recaptcha, captcha, Microsoft SQL Server, Chat GPT, Pandas, OpenCV, OCR, Interactive Brokers/Trader Workstation API, cosine similarity, fuzzy matching
Ross G.
has worked
.
$75/hr
100%
Job Success
$30K+ earned
Available now
Offers consultations
Start of list.
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Are you looking for an architect who can deliver 10x faster using AI, without sacrificing security and scalability?
With over 5 years of dual expertise as a Systems Engineer (C++) and a Cloud-Native Full Stack Developer, I build secure, high-performance backends and complex data pipelines. I don't just write scripts—I design enterprise-grade architecture.
By integrating Agentic AI Workflows into my development process, I rapidly deploy complex, bug-free features—from multi-cloud AWS backends to algorithmic trading engines. I bridge the gap between low-level hardware performance and scalable web applications.
🔥 Core Expertise (Why Upwork Matched Us):
Cloud & SecDevOps: AWS (Expert), Azure, Docker, Kubernetes, CI/CD, Infrastructure Security.
Backend & APIs: Python, Django, REST APIs, Microservices, System Architecture.
Advanced Systems: C++ (17/20), RTOS, Socket Programming, Linux Kernels.
Next-Gen Tech: Agentic AI Development, LLM Integration (Langchain, OpenAI), Blockchain.
I focus on results, security, and speed. As a Polyglot Architect, I ensure memory-safe environments, zero-downtime deployments, and highly robust integrations. Let’s jump on a call and outline the architecture for your next big project.
Eht I.
has worked
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