I build and improve production SaaS platforms, web and mobile apps, AI features, dashboards, portals, and API integrations using React, Next.js, Node.js, React Native, TypeScript, Python, AWS, PostgreSQL, MongoDB, Supabase, Stripe, and OpenAI API. Most clients come to me when they need someone who can do more than write tickets. I can understand the product, review the architecture, clean up the codebase, plan the work, communicate clearly, and ship reliable features. What I can help with: • Full-stack SaaS development • React, Next.js, and TypeScript frontend development • Python, Django, FastAPI, Node.js, Express, and NestJS backend development • REST API and GraphQL API development • OpenAI API, Anthropic Claude, Google Gemini, and LLM integrations • LangChain, LangGraph, AI agents, and AI workflow automation • RAG systems, vector search, embeddings, semantic search, and document-based AI • Chatbots, AI copilots, AI assistants, voice AI, transcription, summarization, and prompt engineering • Function calling, tool calling, AI automation, Retell, LiveKit, n8n workflows, and third-party API integrations • Stripe payments, subscriptions, billing, and webhooks • PostgreSQL, MongoDB, MySQL, Supabase, and Prisma • AWS, Vercel, Docker, CI/CD, and production deployment • Admin panels, dashboards, customer portals, and internal tools • Refactoring, bug fixing, performance optimization, and technical audits I’m comfortable joining an existing team or leading delivery independently. I can write code, review PRs, structure sprints, work with designers and product owners, and keep the project moving without needing constant supervision. I also use AI development tools like Cursor, Claude Code, and GitHub Copilot to move faster, but every line is reviewed carefully before it ships. If you need a reliable full-stack developer for a new SaaS product, an existing platform, AI integration, API development, or long-term product support, I’d be happy to help.

Enterprise product Developer, 8+ Years of Experience, Full-Time Freelancing,100% Job success rate. I am a Tech Leader with over 8 years of experience in building custom products across diverse industries. As a former CTO, I’ve led numerous successful project developments and created highly scalable solutions.With a 5-star rating on Upwork and a 100% job success rate, I’m committed to delivering results that exceed expectations and understanding how solutions impact your business. I believe in continuous learning and collaboration 🔍 My Expertise: • Backend Development: I excel in creating seamless solutions, whether event-driven, monolithic, or microservices-based. From designing architecture to writing efficient Python code, I deliver end-to-end backend solutions that are secure, optimized, and reliable. • API Development & Integration: Expert in developing and integrating RESTful and GraphQL APIs, with deep knowledge in JWT tokens, API authentication, rate limiting, and DDoS protection. I specialize in creating secure, optimized, and highly scalable API engines, including those handling PII data. • Cloud Solutions: Deep expertise in AWS services like EC2, S3, Lambda, and DynamoDB, Amplify, Aurora, AWS Elastic Search,SQS, Step Functions, Batch,AWS Cognito architecting optimized cloud environments tailored to your needs • Automation & Scripting: Automating complex workflows with Python and custom scripts, enhancing productivity and operational efficiency. • Database Management: Proficient in PostgreSQL, MongoDB, MySQL, and DynamoDB, ensuring reliable and scalable data solutions. 🔧 My Unique Process: My approach to project delivery sets me apart. I start by asking the right questions to ensure we’re aligned on goals and outcomes: 1. WHAT? – I dive deep into understanding what exactly needs to be developed, which helps me define a comprehensive Statement of Work (SOW). 2. WHY? – I focus on understanding why you need this solution, uncovering the core problems and requirements, which informs the design of scalable, secure, and optimized Low-Level and High-Level Designs (LLD & HLD). 3. HOW? – If you have existing solutions, I'll collaborate with you to assess them and determine the best path forward. 4. Planning – I create a detailed plan to execute the project efficiently. 5. Development – I follow the Software Development Life Cycle (SDLC) process to deliver a robust and scalable solution. 🌍 Global Collaboration: I thrive in diverse, multicultural teams and have a proven track record of working effectively across different time zones, ensuring smooth communication and project delivery. 💬 Let's Innovate Together: If you're looking for a tech leader who can drive your project to success with innovation, reliability, and a keen eye for detail, I'd love to connect. Let’s collaborate to turn your vision into reality.

I am a mathematics professor who has moved to the fields of data engineering and data science. I'm L. Mark Coty, a data engineer from Atlanta, GA. My current project websites can be accessed below, and at my portfolio and GitHub pages. I have the AWS Data Engineering Associate certificate: DEA-C01 In Programming & Data Analysis I have experience and certifications in Python, SQL, Pandas, NumPy, SciPy, Scikit-Learn, Matplotlib, Seaborn. etc. In Machine Learning & Statistical Methods I am fluent in Regression, Classification, A/B Testing, Hypothesis Testing, Bayesian Inference. In Data Engineering & Visualization I have used Tableau, AWS QuickSight, and processes for Data Cleaning and Feature Engineering. In Tools & Workflow, I've worked with Jupyter Notebooks, Git, GitHub, Jira, Google Suite, Microsoft Suite. I have 20+ years experience teaching mathematics at the college and high school levels. I have managed the math and ELA teams for a major US test-prep company. Languages: English (Fluent), German (Fluent Translation Skills) Best, Mark

𝗦𝗲𝗻𝗶𝗼𝗿 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | 𝟳+ 𝘆𝗲𝗮𝗿𝘀 | Full Stack & AI/ML Developer My recent work as a Full Stack Developer for "Creatorcart" showcases my expertise in developing advanced influencer engagement platforms using JavaScript and its frameworks. At "Creatorcart", I played a core role in developing a dashboard for influencers, integrating artificial intelligence modules, and building the UI using React and TypeScript. In addition to full-stack development, I specialize in AI/ML integration within web applications. I’ve developed features powered by GPT-3.5/4, and fine-tuned open-source transformer models (e.g., BERT, LLaMA, and SentenceTransformers) to enable intelligent recommendations, categorization, and conversational experiences across product workflows. My technical arsenal includes, but is not limited to, modern web development stacks like Next.js, React, TypeScript, Redis, and PostgreSQL, as well as AI/ML tools like Python, Hugging Face Transformers, LangChain, TensorFlow, and Scikit-learn. I also integrate models using OpenAI API, Whisper for speech recognition, and deploy intelligent microservices using AWS Lambda and GCP. 🟢 AI/ML Expertise: Incorporating machine learning into real-world web platforms, I can help you: ➛ Integrate AI Chat Assistants using GPT APIs (OpenAI / Azure) ➛ Build semantic search, embeddings-based recommendations using tools like FAISS, Pinecone, or Weaviate ➛ Auto-tag or categorize content using transformer-based NLP models (e.g., DistilBERT, RoBERTa) ➛ Deploy serverless AI APIs using FastAPI, Flask, or AWS Lambda ➛ Use LangChain to build LLM-driven workflows for tasks like document summarization, custom Q&A bots, or structured data extraction ➛ Train and fine-tune models with Scikit-learn and TensorFlow/Keras for classification, forecasting, or clustering tasks 🟢 Expanded Professional Expertise: As a seasoned Full Stack + AI developer, I offer an end-to-end solution covering frontend, backend, and intelligent systems: ➛ Front-End Development: React, Next.js, Tailwind – optimized, responsive UIs ➛ Back-End Development: Node.js, Express.js, Python (FastAPI, Flask) ➛ Database Management: PostgreSQL, Redis, MongoDB ➛ Cloud & DevOps: AWS (Lambda, S3, DynamoDB), GCP, Vercel ➛ AI & ML Integration: OpenAI, Hugging Face, Pinecone, LangChain, TensorFlow ➛ Voice & Vision Models: Experience using Whisper (speech-to-text), CLIP (vision-text embeddings), and custom object detection pipelines Contact me to discuss how we can transform your business ideas into successful digital solutions. 🚀 With excellent communication for both video and audio calls, I would love to connect with you to find out more about how I can be valuable for you! Let's schedule a meeting.

✅ High-Quality Work ✅ Budget-friendly ✅ Fluent English ✅ Flexible Availability (EDT/GMT/AEST) Dear Client, I have 5 + years of full time experience in Python, Django and FastAPI . I have worked on more than 50 Django /FastAPI websites and web applications which include Enterprise level applications , eCommerce websites, Mobile websites, Healthcare websites along with JavaScript frameworks like AngularJS, ReactJS and Vue.Js. I have created several Python projects for the last 10+ yrs with different libraries. I am a certified Python full stack developer from different institutions. ✅✅✅Core Python✅✅✅ Always used Python latest version along with unittest, PEP standard and KISS and OWASP security followed for coding. Always follow SOLID principles so that all my codes can be understood and extended by any good developer later. Almost all methods are tested by unittest various test cases. Each method cheked by profiling for its better performances. ✅✅✅REST API✅✅✅ All REST API are Open API standard and most of them are with Swagger defined. So they are definitely higest standard in every direction. ✅✅✅Django✅✅✅ I have used mostly Django and Flask framework but also use Tornado async. Django, Django CMS, Django Rest framework, Celery, sentry-sdk, django-extensions, django-rest-framework-jwt, django-rest-swagger, django-simple-history, django-model-utils, django-storage, django-allauth, dubug toolbar etc. ✅✅✅FastAPI✅✅✅ FastAPI, Uvicorn або Gunicorn, FastAPI Debug Toolbar (або middleware), pytest, SQLAlchemy, Pydantic, asyncpg або psycopg, Celery, Redis, OAuth2/JWT (FastAPI security), rate limiting middleware (SlowAPI), background tasks ✅✅✅Databases✅✅✅ I am expertise with different databases like PgSql, Mysql, Mariadb, Mongodb, nosql etc. ✅✅✅Cloud✅✅✅ I have working to create micro services application in different cloud platform say AWS, GCP and Azure. ✅✅✅AWS✅✅✅ Some of the tools I used in AWS various tools including CodeCommit, CodeBuild, CodeDeploy, CodePipeline, Cli, EC2, S3, EBS, DynamoDB, RDS, Lambda with Boto3, VPC, LightShell, SageMaker, Kinesis, SQS, SNS, AppSync, Beanstack, ECR, ECS, Farget, EKS, SES, ElastiCache, Cloudwatch, IAM, Cognito, ApiGateway, Shield, Sso, Route53, CloudFront, ELB, ALB. ✅✅✅Artificial Intelligence✅✅✅ My work is not limited with general Python and MVC based work. But I am a certified Machine Learning and Deep Learning engineer as well. Used different libraries including Tensorflow, Keras, Numpy, Pandas, Matplotlib, ScikitLearn etc. ✅✅✅Frontend ✅✅✅ Front end I have been using from HTML5 to Javascript, Jquery, Angular Js , React Js and Vue Js for years. ✅✅✅Development environment and process✅✅✅ Always use the highly secure development environment along with Git, Docker and Kubernetes. Experience in entire software development life cycle and decision-making. Skilled at building effective and productive working relationship with clients and team members. Software Product/Tools worked with: Python / Django / Flask / Pyramid, PostgreSQL / MySQL / SQL Server / Oracle, JavaScript, AJAX, jQuery, PHP, Amazon Web Services, Heroku, Google App Engine, Google API, Fedex API, Stripe API, PayPal API, HIPAA Compliance, AngularJS, ReactJS, OpenERP / Odoo, Docker, Redis, Redmine, Celery, RabbitMQ, Twilio API and lots more. I can integrate any API with your existing systems. Looking forward to an interview invitation.

Last quarter I cut a fintech's AWS bill from $8,200 to $3,800 a month. I never touched their production environment, and they never went down once. That's the kind of work I get hired for: the AWS and AI decisions that are too expensive to get wrong and too critical to hand a junior. I'm a Senior AWS & AI Architect who acts as a fractional Cloud CTO for funded startups, SaaS, and healthcare teams. I own the architecture, fix what's broken, and build the production platforms your team actually runs on. A few things that separate me from the crowd: 100% Job Success across 14 contracts, every one five stars. AWS Certified Solutions Architect. AWS re/Start Accredited Instructor (I've trained 300+ engineers now working at TCS, Zoho, and others). And I'm the CTO of two live companies right now, a HIPAA healthcare platform and an AI systems firm, so I'm building production systems daily, not just talking about them. WHAT I ACTUALLY DO FOR CLIENTS: AWS architecture and strategy. I design cloud systems right the first time, or rescue the ones that weren't. AI agent infrastructure. Most AI agents die in production. The auth breaks, the costs run away, they drift quietly until they're confidently wrong. I build the monitoring, cost controls, and integration layer that keeps them alive, because I run production AI systems, not demos. AWS cost rescue. That 54% cut wasn't a one-off. I find the waste and kill it without downtime. Production platform builds. Multi-tenant SaaS, microVM infrastructure, full CI/CD your team owns from day one. Terraform and infrastructure as code. Multi-environment, reproducible, no snowflake servers nobody can explain six months later. HIPAA and SOC2-grade architecture, when compliance is non-negotiable. PROOF FROM THE LAST YEAR: Built a HIPAA-compliant AI platform as CTO. AI voice agents feeding a full backend with automation and audit logging, BAA-covered. A real healthcare system in production. Cut that Canadian fintech's AWS bill 54% with zero downtime. Built a Firecracker microVM platform on bare metal, multi-tenant PostgreSQL, around 70% CI cost savings. Shipped multi-tenant SaaS on k3s and EKS with Stripe billing, Keycloak, and full CI/CD. Ran a SP-API data pipeline moving 10,000 SKUs in under four minutes. Here's why clients keep me around: I make the calls a CTO would make, I make them on live systems without breaking them, and I leave clean docs and runbooks so your team isn't stuck depending on me forever. Tell me your stack and your two biggest headaches, cloud, AI, or both. You'll have a plan from me within 24 hours.

I help companies design, automate, and scale modern cloud infrastructures on AWS — making deployments faster, more secure, and cost-efficient. With 10+ years in IT (7+ in DevOps & Cloud), I specialize in building AWS and Kubernetes solutions that eliminate bottlenecks, improve reliability, and accelerate delivery pipelines. ✅ Cloud Platforms: Amazon Web Services (AWS) (strongest), Azure, GCP ✅ Automation & IaC: Terraform/OpenTofu, CloudFormation, CDK, Troposphere, Ansible, AWS SAM ✅ Containers & Orchestration: Docker, Kubernetes, AWS ECS, AWS Fargate, Helm, Kustomize, ArgoCD, FluxCD ✅ CI/CD Pipelines: GitHub Actions, Azure DevOps, Jenkins, GitLab CI/CD, CodePipeline ✅ Scripting & Serverless: Strong background in coding (Python, Node.js) with hands-on experience building AWS Lambda functions, serverless APIs, and automation workflows ✅ Monitoring & Security: Prometheus, Grafana, ELK, DataDog, Wiz, CrowdStrike ✅ Networking & Delivery: AWS CloudFront, API Gateway, Cognito, Lambda Authorizers ✅ Databases & Messaging: SQL/MySQL/Postgres, DynamoDB, RDS, MongoDB, Kafka, RabbitMQ, SQS I’ve successfully delivered projects such as: 1. Migrating on-premise and legacy applications to AWS Cloud with automated CI/CD pipelines and Infrastructure as Code (IaC) 2. Building scalable Kubernetes clusters with GitOps-based deployments 3. Designing secure, SOC2-aligned infrastructure with monitoring and alerting 4. Automating serverless backends using AWS Lambda, API Gateway, Cognito, and DynamoDB 5. Designing and provisioning infrastructure for AI Agents and Bots on AWS ECS and AWS Fargate My background in development means I don’t just manage infrastructure — I also understand code, which helps me collaborate seamlessly with engineering teams and write reliable Infrastructure as Code (IaC) and automation. If you need a partner who can architect, automate, and deliver AWS cloud solutions at scale with zero drama, let’s connect.

❌ Sorry, I don’t take small fixes or quick, one-time setups. ✅ I focus on long-term engagements, solving advanced DevOps challenges & delivering real business results, covering US, European & Australian timezones. My standard rate is $65 With 15+ years in Dev Ops, AWS DevOps & Azure DevOps, aws kubernetes, aws docker, I have designed architectures supporting 10,000+ concurrent users, reducing operational costs by 40% through automation. My 12+ years of expertise as a Senior DevOps Engineer in Kubernetes (DevOps Kubernetes / DevOps K8s), Terraform & CI/CD has enabled the deployment of 5,000+ containers daily, optimizing cloud workflows for enterprises managing petabytes of data across multi-cloud environments, including Application Release Automation, Deployment Automation & System Automation. 🌟 Certified Kubernetes Administrator (CKA) & AWS Certified Solutions Architect 💻 Proficient in DevOps Tools: AWS DevOps, Azure DevOps, Kubernetes, Docker, Jenkins, Terraform, GitLab CI/CD, AWS Glue, Sensu & Automated Monitoring. — Automated 90% of deployments with Jenkins, built 50+ apps using JavaScript & managed 100K+ daily requests on AWS, cutting costs by 30%. — Designed 100+ CI/CD pipelines, boosting delivery speed by 70% & optimized 200+ backend apps with Node.js. — Containerized 300+ apps using Docker, reducing provisioning time by 60% & provisioned 100+ environments with Terraform, cutting setup time by 80%. — Managed GCP with 500+ nodes, ensuring 99.99% uptime & improved efficiency by 70% with DevOps practices. — Optimized resource use by 40% with k8s, developed 20+ interactive apps using React, & automated 50+ microservices. — Led 50+ projects as a DevOps Engineer, automated 60% of tasks with Python, & ensured 99.99% uptime with Linux, Ubuntu, & CentOS — Managed 100+ projects with Git & automated 200+ configurations with Ansible. I specialize in aws dev ops & azure dev ops terraform workflows, enabling businesses to achieve high-performance, scalable, & secure deployments. My expertise includes automation with tools like Terraform for K8s infrastructure & devops amazon web services cloud environments, as well as advanced ci/cd processes for seamless integration & delivery, including Infrastructure Management & AlOps. With Kubernetes DevOps, I deploy containerized applications across platforms like AWS EKS, Azure AKS & GCP GKE. I also design efficient ci cd pipelines using tools such as Jenkins, GitLab CI/CD & GitHub Actions, ensuring reliable deployment with minimal downtime. In addition to infrastructure automation, I bring expertise in workflow automation, QA automation, & ML deployment. Core Competencies: As a Senior DevOps Engineer, devops Consultant, & CTO, I deliver innovative, scalable & efficient solutions for complex business challenges. ☁️ Cloud Infrastructure Design: Expertise in building robust architectures with aws devops engineer, azure devops engineer & gcp devops, integrating services like AWS RDS, AWS Big Data, AWS Cognito, & Google Cloud Platform. 🚀 CI/CD Pipelines: Proven experience designing & optimizing dev ops CI/CD workflows, including AWS CI/CD, Azure DevOps CI/CD, GitLab CI/CD, & advanced CICD pipelines. 📦 Container Orchestration: Advanced knowledge of Kubernetes devOps & Azure Kubernetes for managing scalable, secure & automated environments. 🤝 Automation Engineering: Proficient in tools like Terraform, Ansible & scripting with Python aws developer to automate workflows & infrastructure provisioning. 📊 Monitoring & Observability: Expertise in setting up monitoring tools like Sensu, Prometheus, Grafana, ELK & CloudWatch to ensure Automated Monitoring, real-time insights & performance tracking. 🔒 Security & Compliance: Skilled at implementing secure & compliant cicd pipelines, including DevOps Docker CI/CD, to protect sensitive data & ensure regulatory adherence. 🤖 Machine Learning Deployment: Hands-on experience deploying AI/ML models on AWS Lambda, GCP Terraform & Azure Machine Learning platforms. Services Offered: – Cloud architecture design & implementation on AWS Architect, Azure & GCP – CI/CD pipeline creation & optimization, including AWS CI/CD & Azure DevOps CI/CD – Infrastructure automation using Terraform, Ansible & devops kubernetes – End-to-end deployment solutions, including AWS deployment, Kubernetes Terraform & Azure DevOps automation – Secure microservices architecture migration, leveraging Docker & AWS Kubernetes – Workflow automation & QA process optimization for faster delivery cycles – Real-time monitoring & logging integration using Prometheus, Grafana & ELK stack – Support for Python AWS development, AWS RDS & AWS DynamoDB for database management ⭐⭐⭐⭐⭐ Client Testimonial: "We have been able to scale their platform by 300%, which has enabled them to onboard many customers. The team has done a remarkable job, they go beyond their duty & manage the project seamlessly." Let's connect & create a value-driven plan for your next project 👉🏻

👋 Hi there, I am a Full Stack Developer with 5 years of experience specializing in both Salesforce development and web development. My expertise spans Salesforce Clouds, integrations, development, and administration, as well as modern web frameworks and cloud technologies. Web Development Expertise Front-End Development: React.js (Redux, SCSS, SASS, GraphQL, Apollo) AngularJS UI Libraries: Semantic UI, Material UI, Ant Design Back-End Development: Python (Django, FastAPI, Flask) Node.js Generative AI: LangChain, LLM, RAG, ChatBots Cloud Expertise (AWS): AppSync, Amplify, Lambda functions, Lambda Layers DynamoDB, CloudFront, Route53, API Gateway, Cognito, S3, SES, IAM, EC2, and other AWS services Salesforce Expertise Salesforce Clouds: Sales Cloud Service Cloud Community Cloud Field Service Lightning (FSL) Financial Services Cloud Salesforce Integrations: Adobe Sign, DocuSign, QuickBooks, Marketo, Twilio, Jira, Drift, SAP, Mailchimp, Slack, SharePoint, Unbounce, WordPress Salesforce Development Services: Lightning Web Components (LWC), Visualforce, Apex, Triggers, SOQL, SOSL Salesforce APIs, Force.com sites, and custom app integrations Salesforce Administration Services: Object/Field Customization, User Role & Profile Setup, Workflow Rules, Validation Rules, Approval Processes Data Migration: Data Import/Export, Data Loader, ETL tools like Pentaho I bring a comprehensive skill set to deliver scalable, efficient, and innovative solutions across a wide range of platforms. Let's connect to discuss how I can add value to your projects! 😊

Mobile App Developer & Mobile App Development studio — Flutter & React Native. B2B, SaaS, manufacturing, e-commerce, MVPs. End-to-end delivery. With 40,000+ hours delivered on Upwork, a 100% Job Success Score, and a Top Rated Plus badge, Palm Infotech is one of the most trusted mobile app development studios on the platform. We don't just write code — we partner with businesses to solve real operational problems through technology. As a full-service Flutter Developer and React Native Developer team, we build cross-platform mobile apps for B2B SaaS platforms, manufacturing and distribution workflow digitization, e-commerce apps, and startup MVPs. From field sales tools and dealer order management systems to customer-facing storefronts and enterprise dashboards — we handle the full cycle. What makes us different: — End-to-end delivery: discovery, architecture, design, development, QA, and deployment — A structured team: Flutter developers, React Native developers, QA engineers, business analysts, and tech managers — Clear communication and milestone-based delivery — no surprises — Deep domain experience in manufacturing, distribution, and B2B operations If you need a mobile app built right — on time, on budget, and built to scale — let's talk.