📢STOP LOSING SLEEP OVER TECHNICAL DEBT, SLOW API RESPONSE TIMES, OR MESSY CODEBASES. 🔍 Are you a founder or an engineering lead looking to build a production-ready platform that scales from day one? I help businesses take complex ideas from concept to successful launch—without the drama, missed deadlines, or communication gaps. 💻 With over 6 years of experience, I bring "Big Tech" engineering standards to your startup or enterprise. Whether you need a rapid MVP built on the MERN/MEAN stack or a high-concurrency, microservices-driven system using GOLANG and ELIXIR, I don't just write code—I engineer scalable business solutions. 🤝 WHAT YOU GET WHEN WE PARTNER: ➡️ Transparent Delivery: Daily updates, short feedback loops, and clear communication. Zero "black box" development. ➡️ Clean, Maintainable Code: Heavy emphasis on proper database design, typed languages, and scalable architecture so your next team can easily understand and extend the product. ➡️ Post-Launch Reliability: I don't just ship and disappear. I provide runbooks, monitoring setups, and pragmatic post-launch support to ensure your platform stays stable. ➡️ Fast Start: Day-one environment setup and a small, risk-free first milestone to prove value immediately. 🚀 CORE SERVICES & USE CASES: 💠 Product Development: Custom SaaS Development, MVP Development, Web Application Development. 💠 System Architecture: Microservices, Event-Driven Systems, High-Concurrency Backends, Database Optimization. 💠 API Engineering: RESTful APIs, GraphQL, Third-Party API Integrations (Stripe, Twilio, OpenAI/LLMs, etc.). 💠 Real-Time Systems: WebSockets, Chat Applications, Live Tracking Dashboards. 🛠 MY TECHNICAL ARSENAL: ➡️ Full-Stack Ecosystems: MERN Stack, MEAN Stack ➡️ Backend & APIs: Node.js (Express.js, Nest.js), Golang (Gin, Fiber), Elixir (Phoenix, LiveView), Python. ➡️ Frontend Development: React.js, Next.js, Angular.js, TypeScript, JavaScript (ES6+), Tailwind CSS. ➡️ Databases: PostgreSQL, MongoDB, Redis, Elasticsearch. ➡️ DevOps & Cloud: AWS, GCP, Docker, Kubernetes, CI/CD Pipelines, Serverless Architecture. Skip the endless scrolling through unreliable profiles. Send me a message today with a brief overview of your project, and let’s outline a clear, actionable roadmap for your first milestone. ⌨ 𝗞𝗲𝘆 𝗪𝗼𝗿𝗱𝘀: Elixir, OTP, Beam, Go, Gin, Phoenix Framework, LiveView, Surface, Drab, Cowboy, Ecto, GraphQL, Nerves, GenServer, Supervisor, Task, Ecto, PostgreSQL, MySQL, MongoDB, Redis, Riak, Golang, Dart, Full-Stack Developer, ReactJS, TypeScript, JavaScript, jQuery, Angular, AWS, Google Cloud Platform, Docker, MEAN Stack, MERN Stack, Front-End Development, HTML5, CSS3, Bootstrap, Azure, DevOps, Kubernetes, WebSockets, SEO-Friendly Web Development, Cross-Platform Development, Next.js, Express.js, Vue.js, React.js development, React frameworks, Git, Tailwind CSS, SASS, SCSS, Gitlab, Gulp, Webpack, Figma, Responsive Design, Cross browser compatibility, Nuxt.js, GitHub, Elixir, Golang, Phoenix Framework, LiveView, Node.js, Gin, Nest.js, GraphQL, PostgreSQL, MongoDB, Redis, Kafka, RabbitMQ, AWS Lambda, Kubernetes, Terraform, AI Chatbots, Machine Learning, LLMs, NLP, OpenAI, FinTech, Healthcare AI, SaaS Development, API Development, DevOps, CI/CD, Docker, Cloud Computing, Microservices, WebSockets, Agile, React, Next.js, Vue.js, TypeScript, Tailwind CSS, Stripe, Twilio, AI Automation, Cloud Infrastructure, Serverless Computing.

I’m a world-class engineer with expertise in creating products used by enterprises, consumers, defense agencies, and governments. I’ve got deep expertise in every major technology stack from top to bottom, frontend to backend, OS to hardware. I’ve lead development on systems that deliver hundreds of billions of requests monthly, and have managed teams with 40-50+ direct reports across various functions. I'll work with you to first understand your problem in-depth, lay out a roadmap to completion, and start executing with regular updates so you're completely on the same page. You'll have constant confidence that your project is in the right direction. I work on a large range of technologies, including but not limited to: - Languages: Nodejs, TypeScript, Golang, JavaScript, C, C++, HTML, CSS, SCSS, Python, Java, Kotlin, PHP, Ruby, C#, Perl, Erlang, Zig, Swift, Rust - Frameworks / Platforms: Android, iOS, Django, Laravel, Ruby on Rails, .NET, Angular, React - Databases: PostgreSQL, MySQL, Redis, Elasticsearch, Clickhouse, RabbitMQ, ScyllaDB - Operations: Kubernetes, Docker, Ansible, HAProxy, Nginx, Terraform, Consul, Prometheus, Grafana - Protocols: TCP/IP, HTTP, gRPC, Protocol Buffers, SMTP, IMAP - Clouds: AWS, GCP, Azure, OpenStack

As a CTO and Full-stack developer, I've been working for over 18 years. Led and developed tons of projects, including desktop apps, web games, mobile games, web apps, mobile apps, etc. Thanks to a long time in the industry, I've got experience in many parts of software development, from Windows to Linux, from Client to Server, from Desktop to Mobile, from Game to App. My Skills: - C/C++, Golang, Python, PHP, Java, JS, C#, OC, Swift, Lua, Erlang, etc. - Flask, React Native, React.js, Next.js, Vue.js, Laravel, Beego, SwiftUI, etc. - MySQL, PostgreSQL, MongoDB, etc. - Unity 3D, Roblox, Cocos2dx etc. Let's get things done.

More than 20 years of professional experience, expertise in Linux, C/C++, Python, Erlang, advanced algorithms, system analysis. Open to various offers, but mostly interested in Linux kernel, currently. Fixing bugs, solving complicated problems, creating / reshaping systems. The result is most important of all things. There are no borders between various disciplines of programming. A high power output, not for every appliance. :) Getting things done.

I am: — an experienced Full Stack Developer (Elixir/Erlang)/JS/React.js — work closely with designers (work in Figma) — provide great UI/UX, know how to provide best user experience — love to code Elixir and solve difficult problems on a backend My skills: — Elixir (Phoenix framework) — React.js — DB: / PostgreSQL / MySQL — Cloud hosting: AWS / Google Cloud / Heroku — API integration: Facebook, Twitter, Instagram, Yandex Money and more I have a lot of experience with a web development and hope my skills will be useful for you business.

🚀 If your product needs to scale without breaking - that’s where I help. I build and support web & mobile applications that are stable in production, easy to extend, and ready for real users - not just demos. 🛠 My specialization Full-stack development for long-term products using React, React Native, Node.js, Next.js, Nest.js, and Python. I work with REST & GraphQL APIs, modern frontend architecture, and reliable backend systems backed by MongoDB, PostgreSQL, and MySQL. 💡 What you get as a client 🔹 Clean, maintainable code that doesn’t fall apart after launch 🔹 Fewer bugs thanks to structured development and QA-first thinking 🔹 Systems ready for growth: users, traffic, features 🔹 Clear communication and predictable delivery in remote teams 🌍 📌 Where I add the most value FinTech, Blockchain, SaaS, E-commerce, ERP, CRM, and data-driven platforms - especially projects with complex logic, integrations, or high load. 🏆 Proof points 🔹 I have 10 years of experience in web and mobile application development 🔹 Delivered 20+ production projects, including: 🚀 a blockchain banking platform with 50,000+ active users 🚀 a large SaaS system for UK government civil servants 🔹 Experience scaling engineering teams from 50 to 200+ developers while keeping delivery stable 🤝 How I work Fluent English, full remote experience, comfortable across time zones. I focus on business outcomes, code quality, and long-term system stability - not just “closing tasks”. ❓ Let’s start with one question What are you building right now, and which part of the system worries you most?

Currently offering a remote consulting service to guide businesses through the innumerable choices and decisions in the following aspects of Microsoft Power Platform, Microsoft Dynamics ERP, and Microsoft Dynamics CRM • I have been involved in Microsoft Dynamics 365 for Finance & Operations / Dynamics AX implementations and vertical development. I have also done a fair share of work on .NET applications and SharePoint development/integration. I am looking for new opportunities to learn more about new businesses, implement the newest versions of D365 F&O and also develop applications as per requirements. • Rich Experience in the stack of Microsoft Technologies and exclusively several years of hands-on experience on Microsoft Dynamics CRM 365, 2016, 2015, 2013, 2011, and 4.0 versions with the implementation of 5+ Microsoft Dynamics CRM projects end to end covering all features/Modules of Microsoft Dynamics CRM. • Expertise in the Power Platform (Power Apps, Power Automate & Power BI) • Functional Requirements Gathering, Technical Documentation, Process Mapping, Business Systems, and Process Analysis experience, IT Solution Design & Configuration • Gathering business requirements and translating them into Microsoft Dynamics CRM functions/modules. • IT Project Management, Stakeholder Management, Pre-Sales, Project Estimation/Costing • Strong Attention to Detail and a Rigorous Focus on Delivering Quality Output Microsoft Dynamics ERP • Microsoft Dynamics Implementation • Microsoft Dynamics Customization • Microsoft Dynamics Integration using AIF and .NET Business Connector • Dashboard Development for Dynamics using PowerBI and SSRS • Microsoft Dynamics GP Implementation • Microsoft Dynamics GP Customization • Microsoft Dynamics GP Integration using eConnect • Dashboard Development for Dynamics GP using PowerBI, SSRS, and Report Writer Microsoft Dynamics CRM • Microsoft Dynamics CRM Implementation • Microsoft Dynamics CRM .NET Plugin • Microsoft Dynamics CRM Managed Solution Development • Microsoft Dynamics CRM Workflows Development • Microsoft Dynamics CRM Entity Customization

🌟🌟🌟🌟🌟 10+ years of extensive industry experience in developing complex enterprise systems as a software engineer. A CERTIFIED DEVELOPER with proven skill in functional and object-oriented language. My professional experience includes working with prominent multinational companies/institutions, some of them are as follows: 🌟 United States - Indeed.com, a leading global job board company. 🌟 Singapore - helloPay / Lazada / Rocket Internet, the most prominent e-commerce in Singapore and South East Asia with revenue USD 1 Billion. 🌟 Malaysia - CIMB Bank, the largest bank in Malaysia and South East Asia with revenue over USD 4 Billion. 🌟 Indonesia - DANA, a joint venture with Chinese giant Ant Financial, producing the leading digital wallet in Indonesia with aggressive plans for Asia expansion. 🌟 Indonesia - Rehabilitation and Reconstruction Agency for Tsunami 2004, managing over USD 6 Billion of international aid. During my extensive professional career, I have delivered quality software for the financial industry, including banking, insurance, as well as fintech startups currently trending in Asia in the past years. I have implemented numerous features ranging from backend processes such as event messaging, automatic scheduling, SOAP, RESTful API to the frontend side where customers could place financial transactions like money transfers and bill payments. My tech stack : 🌟 Programming Language (functional and OOP): Java, Elixir, Erlang, Phyton, Go, Javascript 🌟 Frameworks: J2EE, Spring, Phoenix, React.js, Vue.js 🌟 Database: Mysql, PostgreSQL, GraphQL, MS Sequel Server, Oracle 🌟 Others: App servers, Git/Github, Jenkins, AWS, Heroku, Scrum Framework TOP 5 REASONS FOR CHOOSING ME OVER OTHER FREELANCERS : 🌟 Client-oriented. It is my core philosophy in engaging with my client. I focus 100 % on helping you meet your business goals and put your needs on top priority. 🌟 Problem-solved guarantee. All projects I was working on were 100 % successfully delivered, and I intend to do the same on the Upwork platform. I guarantee I will solve your problem provided that it is humanly possible to solve it 🙂 🌟 Huge ambition for success, and this is ONLY possible if I help you to be successful too! Giving me extra motivation to deliver your projects that exceed your expectations within the earliest time possible. 🌟 Resilience and challenge-hungry. I embrace challenges and won't stop until I solve your problems. It makes me feels extremely good whenever I solve your problems, and at the same time, I am eager to FACE AND BEAT your next problems. 🌟 Responsibility and Responsiveness. Rest assured that I am taking full responsibility to complete each task and instantly respond to any queries. And I do hope we are able to engage communicatively during projects to clarify issues or requirements whenever necessary. A snippet of the testimony below from one of my previous employers describes her impression when working with me. You can find a complete review in the portfolio section. ".... I am proud of his accomplishments, and he will be a valuable asset wherever he goes and whoever decides to hire him. Mr. Khomeini is very hardworking. I highly recommend him to any company or organization."

📌 ♛ 𝐓𝐎𝐏-𝐑𝐀𝐓𝐄𝐃 PLUS 𝐖𝐄𝐁𝐒𝐈𝐓𝐄 𝐃𝐄𝐒𝐈𝐆𝐍𝐄𝐑 𝐀𝐍𝐃 𝐃𝐄𝐕𝐄𝐋𝐎𝐏𝐄𝐑📌 ★ 8️⃣8️⃣+ 𝐂𝐎𝐌𝐏𝐋𝐄𝐓𝐄𝐃 𝐉𝐎𝐁𝐒 Hello, my name is Jeena, and I am a full-stack developer with 10+ years of industry experience. I have a proven history of architecting, developing, and deploying full-featured web applications that focus on user experience and performant back-end design. I can manage multiple projects through the software development lifecycle, thrive in challenging environments to meet stringent deadlines, and have a deep passion for mentoring and growing colleagues. ⭐️ Web Application Development Expertise ✅ WordPress Website Development (Custom themes, plugins, performance optimization) ✅ E-Commerce Website Development (Scalable, conversion-focused stores) ✅ WIX Website Development ✅ Squarespace Website Development ✅ Webflow Website Development ✅ Magento Website Development ✅ Magento Enterprise Solutions ✅ WooCommerce Website Development ✅ Shopify Website Development ✅ Shopify Plus Development ✅ MEAN Stack Development (MongoDB, Express, Angular, Node.js) ✅ MERN Stack Development (MongoDB, Express, React, Node.js) ✅ React JS Development ✅ Node.js Development ✅ Laravel Application Development 💎 Website Builders & CMS Platforms | Frameworks - WordPress, Shopify, Squarespace, Wix, Webflow, Weebly, Hubspot, OpenCart, PrestaShop, Magento, Drupal, GoDaddy, Google Sites, Joomla, Kajabi, Sitebuilder, Codeigniter, Laravel, Yii, Cakephp, Zend 💎 Databases - SQLite, Realm Database, MongoDB, MySQL, PostgreSQL, Oracle Database, Firebase Realtime Database 💎 Web Design Deliverables - Prototyping, Mockup, Style Guide, User Flow, Landing Page, Website, Website Redesign, Mobile App Redesign, Email Design, High Fidelity Design, Icon Design, Research Documentation, Sketching, Web Component Design, Wireframing 💎 UX/UI Design Software - Adobe Illustrator, Adobe XD, Adobe Photoshop, Balsamiq, Figma, Sketch, InVision 💎 UI/UX Design - Mobile App Design, Software Design, Web Design, Interaction Design, Adaptive Web Design, Button Design, Custom Web Design, Game UI/UX Design, GUI Design, High Fidelity Design, Human-Centered Design, Icon Design, Mobile UI Design, Navigation System Design, Responsive Design, User Experience Design, User Interface Design, User-Centered Design, Web Component Design 💎 Front-End Development Skills - Adobe Photoshop, Google Analytics, .NET Framework, Angular, AngularJS, Bootstrap, Git, jQuery, React, Vue.js, WordPress, Node.js, SaaS, AJAX, AWS Amplify, Backbone.js, Bitbucket, BootstrapVue, Docker, Kubernetes, Next.js 💎 Ecommerce Platforms - Magento, Squarespace, Wix, WordPress, Shopify, WooCommerce, BigCommerce, Elementor, Weebly 💎 Back-End Development Skills - API, Database, Database Architecture, Database Design, Database Maintenance, Software Architecture & Design, Web Service, Business Logic Layer, Data Access Layer, RESTful API, Automated Deployment Pipeline, Back-End Development, Infrastructure as Code, PHP Script, Python Script, Requirements Specification 💎 Back-End Programming Languages - Java, Kotlin, Scala, PHP, Ruby, SQL, TypeScript, Python, C#, C++, Elixir, Apache Groovy, ASP, Clojure, D Language, Dart, Delphi, Erlang, F#, Fluid Hyper Text Markup Language, Golang, GraphQL, Haxe, JADE, Objective-J, Perl, Rust, Transact-SQL, Visual Basic, XQuery, Laravel 💎 Payment Systems - PayPal, Stripe, Braintree, WePay, Worldpay, 2Checkout, Opayo, Payoneer I would be thrilled to discuss your project in further detail, understand your specific requirements, and provide a tailored solution that aligns perfectly with your goals. Best Regards, Jeena 📌 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀: - WordPress Developer, WooCommerce Expert, Custom WordPress Themes - WordPress Plugin Customization, WordPress Performance Optimization - WordPress Security Specialist, and API Integration Expert, Figma to WordPress - WordPress Migration, WordPress Maintenance, WooCommerce Customization - WordPress Theme Customization, E-commerce Solutions, WordPress Speed Optimization - ACF Pro, ACF, ACF Field Group, ACF Option page

I build AI systems that hold up in production, and I've been an engineer for 18+ years, an engineering leader for most of the last decade. I co-founded a venture-backed SaaS platform, ran its engineering as VP for nine years, and helped raise over $20M. These days I work as a fractional CTO and hands-on AI engineer. I still write the code. Most of my recent work is AI agents and retrieval systems, specifically the parts that get hard once you leave the demo behind: holding latency and cost down, grounding answers in real data instead of letting the model guess, evaluating quality so you actually know when a change made things worse, and getting permissions right so the system never answers from a document the user was never allowed to see. Recent work I've built or architected: - An AI-augmented delivery pipeline (spec-driven, agent-run against a ticket backlog) that shipped 200+ fixes and features in a single month with very little direct developer time. - Production AI agents with real cost management, not a prototype that quietly burns the budget. - A multi-agent, character-led knowledge assistant: distinct specialists, a routing layer, retrieval grounding, and guardrails, all behind one interface. - Enterprise RAG architecture: document-readiness assessment, hybrid retrieval and reranking, GraphRAG for relationship questions, adaptive routing, and evaluation gated in CI. Before AI ate my calendar I shipped plenty of other things: an LMS with SCORM, a website builder with a large user base, event booking, commerce, enterprise chat, TV apps, mobile games. EdTech and SaaS are home turf. Working with me, you get someone who'll architect the thing and then build it, who'll tell you when the simpler approach is the right one, and who measures whether the AI is working rather than trusting the vibes. Stack: TypeScript and JavaScript end to end. React, React Native, Next.js, Node, NestJS, Express, GraphQL, serverless. AWS (Solutions Architect certified), Docker, EKS. Postgres, MySQL, MongoDB, DynamoDB. Prisma, TypeORM, Apollo. Heavy on testing: Jest, RTL, Playwright, Cypress, full e2e suites. PMP on the delivery side. Open to fractional CTO, tech lead, and senior build engagements, large or small. Tell me what you're stuck on and I'll tell you straight whether and how I can help.