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Experienced AWS DevOps Engineer with over 6+ years of experience in designing, implementing, and managing cloud infrastructure using AWS services and terraform. Proficient in version control systems like Git and GitHub, with extensive experience in CI/CD pipelines using Jenkins and Maven. Skilled in containerization with Docker, orchestration with Kubernetes, and monitoring with Prometheus and Grafana. Adept at automating deployment processes while ensuring scalability, reliability, and security of cloud-based applications.
Tech Lead and Mentor with ten years of experience in various domains and tech stacks following the industry's best practices, architecture, testing, code reviews, debugging, profiling, and CI/CD pipelines. **I have something special for you - let's discover:** - Student discount is applied automatically. - Displayed rate is not pocket friendly - no worries - I have something special for you. <br/> **Highlights:** - Mentoring is one of my passions, and I have helped numerous mentees on their journey to become successful developers in various fields such as web, native mobile, and cross-platform development. - I have helped many developers to fix critical bugs and implement complex features on the platform. - Proficient in working with teams on software development life cycle(SDLC) from requirement gathering or planning, defining, designing technical architecture, building or developing, testing, deploying, and maintaining applications - Well verse with development process/tools like Github Actions, CircleCI, CodeMagic, Fastlane, Jenkins, BuddyBuild, Git workflow, Github workflow, Agile PM tools, Continuous integration, and continuous deployment(CI & CD), Test/Domain-driven development with keeping healthy test code coverage, etc. - Proficient in creating and working with different kinds of APIs - REST / GraphQL - Proficient in working with databases SQL and NoSQL - Proficient in object-oriented design, data structures, problem-solving, complexity analysis, and debugging. - Proficient in writing efficient, maintainable, reusable, testable code that preserves privacy and security. - Proficient with different platform/services integrations - Right knowledge of toolset and libraries for effective and productive work.
**Who I Am AI Engineer specializing in LLM-powered applications and agentic AI systems. Strong background in multi-agent AI, intelligent automation, and cross-industry AI deployments. **What I Build 1. Agentic AI Systems 2. Multi-Agent AI Platforms 3. LLM Integrations 4. Custom AI Agents **Tech Stack & Skills Languages: Python, JavaScript (Node.js), TypeScript Frameworks: LangChain Cloud & Deployment: AWS, Azure, GCP, Docker Databases: PostgreSQL, MongoDB Other: API development, prompt engineering, RAG **Full Stack Development:** **Mobile App Development** (Native/Cross-Platform iOS/Android Apps) **Technologies / Languages I can work with are:** JavaScript Frameworks: Angular Node React Nuxt Next Nest Vue & other.. TypeScript Full Stack / Mean Stack / Mern Stack / .Net FullStack .NET Core Flutter DevOps Generative AI AI ML LLM UI UX Design - Figma, Adobe XD, Photoshop WordPress AWS / Azure / Heroku Native App Development Cross platform Applications Server Management Hosting / Deployment Database Management (MySQL, Postgres, MongoDB) Git, Jest, MaterialUI Infra: Terraform, AWS, Kubernetes, Docker, Github Actions, Jenkins, CircleCI TDD -->> 10+ years of experience in Development / Providing Customized Generative AI powered Solutions / Consultations work and have worked for everything from small business to unicorn startup. **WHAT I AM LOOKING FOR** Opportunity to collaborate with startups who are in search of a partner to build their ideas; with enterprises to transform their operations into impact-full solutions.
With over a decade of experience in full-stack development, I specialize in **Ruby on Rails, custom eCommerce solutions** (Spree, Solidus), **ReactJS**, and **DevOps**. My expertise spans designing and developing scalable, distributed cloud-based applications with a strong foundation in **database architecture** and **system refactoring**. As a technology leader, I’ve successfully delivered complex, high-impact projects across industries including **Real Estate, Finance, Healthcare, Marketing**, and **eCommerce**. My portfolio includes building sophisticated eCommerce marketplaces, **SaaS platforms**, and multi-channel selling applications. I am passionate about crafting innovative, robust software solutions tailored to meet diverse business needs. **Key Expertise:** - **Backend:** Ruby on Rails, building and scaling RESTful APIs. - **Frontend:** ReactJS, JavaScript, responsive UIs with Tailwind CSS, and Bootstrap. - **eCommerce Solutions:** Spree, Solidus, custom marketplaces, multi-tenant SaaS platforms. - **Database Architecture:** MySQL, PostgreSQL, MongoDB, Redis, Cassandra, optimized for high performance and scalability. - **DevOps:** CI/CD pipelines (CircleCI, AWS Pipeline), containerization (Docker), cloud platforms (AWS, GCP, Heroku, DigitalOcean). - **Test-Driven Development:** Expertise in TDD using RSpec, ensuring high code quality and maintainability. In addition to my technical expertise, I have a strong commitment to **open-source contributions** and have developed multiple **Ruby/Rails/Spree extensions**. I also bring a wealth of experience in **refactoring legacy code bases**, implementing **performance optimisation**, and improving **scalability** and **security**. My passion lies in helping businesses unlock their full potential through technology, and I am always eager to collaborate on long-term, impactful projects. Let’s build the future, one line of code at a time. Best regards, Rahul Singh
I’m a senior mobile + backend engineer with 20+ years in software (PHP since 2002; professional since 2005) and 10+ years building mobile apps. I help teams ship and stabilize real products—especially apps that are “almost done” but stuck on crashes, performance, flaky networking, or release blockers. What I can help you with (fast, practical): • iOS (Swift, SwiftUI, UIKit): crash fixes, performance/memory, concurrency issues, architecture cleanup • Flutter (iOS/Android/macOS): reliability, state consistency, networking/retry behavior, release readiness • Backend stability (PHP/Laravel or custom, Python/Django, Rails): idempotency, queues, DB performance, webhook safety • Firebase + mobile reliability: Auth/Firestore rules, Cloud Functions patterns, analytics/instrumentation • Monetization + shipping: RevenueCat/IAP reliability, App Store Connect/Play Console, CI/CD, rejection handling Recent work includes taking a messy iOS codebase (CakeClub) to production-ready with a Firebase Cloud Functions v2 backend, stronger security patterns, CI/release automation, and RevenueCat integration; and delivering major cross-platform Flutter work (BillBlaster) including design refinements, admin tooling, and push notification features. If you come with logs/screenshots (Crashlytics traces, network errors, repro steps), I’ll give you a clear diagnosis and a prioritized fix plan—and if it makes sense, I can execute the fixes as a focused sprint.
### [Escuela.dev](https://escuela.dev/en) Learn how to code in Malaga, Madrid or online. Perfect for aspiring developers or career changers. Book a free trial lesson <https://escuela.dev/en/free-class/> ## Generative AI skills: - Text generation (OpenAI, Anthropic, Groq, Amazon Bedrock, Google Gemini models) and offline models such as LLaMA - LangChain, Autogen, CrewAI - DALLE and Stable Diffusion for image generation 🤖 - MongoDB Vector Database for RAG (Retrieval-Augmented Generation) models. ## Software Development skills: - JavaScript and TypeScript (React, React Native, Next.js, Astro) 📱 - NodeJS, GraphQL, REST APIs (Express, Fastify, Mongoose) 🚀 - Web development (SCSS, CSS, HTML) 🌐 - Testing (Jest, Vitest, Playwright) - Python 3 (Flask, FastAPI) 🐍 - MongoDB, PostgreSQL and Redis ## DevOps and SysAdmin skills: - Linux (Ubuntu, Debian and Bash) 🐧 - Virtualization (Docker) 📦 - Amazon AWS, Google Cloud, DigitalOcean, MongoDB Atlas, Vercel ☁️ - Cloud Functions (AWS Lambda, Vercel Edge) 🐑 - Monitoring and Backup (New Relic, Sentry, Coralogix) - Continuous Deployment (CD) and Continuous Integration (CI) (GitHub Actions, Jenkins) 🚀 Open source enthusiast: ❤️ https://github.com/gianpaj ⬅️ Click on the **Let's Chat** button to discuss your goals.
I'm a skilled developer in a large number of different computer specialties. Can do everything from building and installing servers to programming in more languages than you probably knew exist.
Web and enterprise applications developer specializing in API and cloud-based applications using Ruby on Rails and .NET
Technical cofounder, board member, and seasoned operator with experience building and growing early stage companies (pre-seed to late Series), large scale government and commercial projects, and nonprofits.
A Web Developer, Graphic Designer and a User Experience Architect with Masters in Cloud Computing from University of Leicester, with fifteen years of Industrial Experience across Technology & FinTech. I work on web technologies like React, Node, TypeScript, HTML, CSS, JavaScript, jQuery and also during my free time, I create web applications in Node JS, PHP & MySQL, formerly one of Classic ASP & Access, ASP.NET & MSSQL, J2EE & Oracle, and Ruby on Rails & PostgreSQL. Specialties: Web Consulting, Web Development, Software Development, Innovative Designs, Professional Training, Cloud Computing, and Game Engineering.
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