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Need a reliable software, automated workflows, custom APIs integrated, or your application deployed on AWS? I build, connect, and deploy high-performance application backends so your web or mobile app runs fast, stays secure, and scales smoothly. ​I maintain a Top-Rated status with a perfect 100% Job Success Score on Upwork. My engineering work has helped clients save $25 Million in documented cloud costs and powered an Acquisition International Award-Winning enterprise platform. ​🛠️ WHAT I BUILD & DELIVER FOR YOU: ​• Custom Python Backends: Production-ready backend systems built with Python, FastAPI, Django, or Flask. • RESTful APIs & Webhooks: Clean API design, custom endpoint creation, and third-party service integrations. • AWS Cloud Deployment: Complete environment setup on AWS (Lambda, ECS, EC2, S3, RDS) with zero downtime. • Database Design & Integration: PostgreSQL, Supabase, DynamoDB, and Redis setup, optimization, and security. • Bug Fixes & Server Support: Fast troubleshooting for server crashes, API failures, database connection errors, and high cloud bills. • AI & RAG Backend Setup: Secure AI pipelines, vector database search (pgvector), and automated LLM workflows. ​📦 WHAT YOU GET WITH EVERY PROJECT: ​Clean, well-documented, and fully tested code. ​Complete cloud deployment with clear, step-by-step instructions. ​A short video walkthrough showing you exactly what was built and how to manage it. ​🎓 CREDENTIALS & CERTIFICATIONS: • AWS Certified Solutions Architect – Associate (SAA-C03) • CompTIA CySA+ Certified Cybersecurity Analyst • Artificial Intelligence Specialist Certificate – Florida International University (FIU) ​Whether you need a brand-new Python backend built from scratch, custom APIs connected, or an existing app deployed to AWS, click "Invite to Job" or send me a message with your project details to get started.

Top 1%; part of the UpWork's Expert-Vetted program. ✅More than 100 completed projects on UpWork 🇺🇸Available for calls during business hours 🎓4 AWS Certifications: Professional Solutions Architect (result is 945 out of 1000), Professional DevOps Engineer (915), Machine Learning Specialty, Cloud Practitioner In short, the solutions I created are used by millions of users every day. I could build a web, mobile or desktop application using Serverless Computing, conforming to the principle of the least privilege under version control for each function (Pay-per-use AWS or Google Cloud infrastructure that scales indefinitely). When I code either the Frontend or Backend solutions, the experience I have defined the prioritization of the characteristics for the product: 1. Simplicity (readability). ---- all frontend services I create are event-driven with the FaaS infrastructure or in rare cases BaaS. ---- I write in strict TypeScript (if you don't know TypeScript, it is the same JavaScript plus type safety to increase stability). 2. Technical scalability ---- Comparing to containerized microservices, where parts are connected to each other, FaaS development allows to create completely independent functions. It is easier to manage and to make changes as you split the functionality into much smaller blocks. ---- FaaS can scale indefinitely, so any load the cloud provider (such as AWS) could handle is supported. -------- If you have 0 customers today, your bill is $0, comparing to microservices, where you have to have at least one container running $25/month. A typical project is eight containers. -------- If you have a billion customers tomorrow, FaaS auto scales horizontally to handle the new load automatically, with the pricing of an optimized solution close to $2-5/million requests for ALL infrastructure combined. 3. Size ---- The size of the bundled assets needs to be small as it affects the operating costs (you are charged by millisecond). ---- I have created tens of different custom Webpack solutions for all types of possible cases to minimize and optimize the bundles, including code splitting, tree shaking, finding the most appropriate target for the JavaScript (or TypeScript transpilation), image minification and lazy-loading (PNG, JPEG, SVG, etc), service workers, manifest, etc. -------- and even the updating process of the objects in a file hosting (such as AWS S3) to upload only those assets that have changed. -------- I have worked on many projects, every time trying to find something else to improve, so the solutions are extremely well optimized. 4. Performance ---- when I had projects to optimize for performance, I have created a lot of custom solutions as public solutions are for everyone and, therefore, typically suboptimal for a particular case. I create SPAs, conforming to PWA standards, and frontend plugins using React.js. I follow Component Driven Development (CDD) together with Visual Test Driven Development. For that, I use PlayWright and Storybook. When writing styles, I use CSS-in-JS (primarily using Emotion library). The Desktop app development involves also Electron, but the overall process is the same. That is the reason why it is easy to convert my solutions to distribute as a desktop app. When creating mobile apps, I use either React Native or create hybrid web-based solutions with Capacitor.js. 🔒Backend: I am a strong proponent of Serverless Computing, who has extensive experience with FaaS and BaaS, automatically generating IAM rules and cloud services, and conforming to the principle of the least privilege for each function/service. In regards to HTTP APIs, I create: - RESTful APIs covering them in tests and preparing for adoption by frontend devs via password-protected documentation over web endpoints where the frontend devs are able to observe and interact with Swagger UI that conforms to the OpenAPI 3.0 specification. - GraphQL. Created in all possible ways: custom with plain GraphQL library (no Apollo or other wrappers), with Apollo; in Programmatic and Declarative ways I automate provisioning of infrastructure (IaC) using AWS CDK and Google Deployment Manager configs, so that it takes one CLI command to create the defined as code cloud infrastructure. Project management/Tracking I am used to daily reporting and knowing that communication is the key, I constantly try to improve clients' experience. I know best methods in version control and I conform to them, doing PRs, releases, keeping multiple branches, and using stashes. ---- I have automated branching & PR requests, as well as connected bots for notifying about changes in corporate chats.The code I write goes through automatic code-styling processing that improves readability and overall quality of the provided work. I use: ESLint and Prettier for all automated code formatting needs. Respectfully, Olzhas

Dear client! My name is Lex, I am am AWS Engineer. Let me ask you: did you have it all on Upwork? Contractors who go offline for days without notice? Freelancers ruined your production environments? Agencies knowing what you need better than you? Indian folks who don't have a clue about a single thing written on their profiles? My morals are different. ⭐️ I am always on for you. My response SLA is minutes. Not hours. Not days. Minutes. ⭐️ My consulting style is gentle and non-invasive. You always have the final say. ⭐️ I am a narrow specialist: AWS is the only thing I sell here, but be certain that I am the best in my league. This is some of things I enjoy: ✅ Web and mobile cloud-native microservice and serverless architectures (AWS) ✅ Cloud solutions cost reduction ✅ External API providers and COTS systems integration using Apache Camel and n8n ✅ Data pipelines, ETLs, ELTs ✅ Bespoke technology assessments ✅ Fully autonomous AI agents My Technology Background ✅ Industry-standard enterprise Java stack: Spring Boot, Hibernate, Apache Camel ✅ Experience with Apache Kafka, ElasticSearch, Redis ✅ Exposure to front-end stack and paradigms: Angular, React, micro-frontends, SPAs ✅ Data stores: PostgreSQL, MySQL, MongoDB ✅ Cloud providers: Amazon Web Services ✅ Standards and protocols: OpenAPI, REST, Json RPC, GraphQL, Mambu, n8n

I'm a certified solutions architect for Amazon Web Services with experience in full-stack software development. My typical stack for web development is a React.js front-end paired with a node.js backend hosted on AWS. For mobile development my preferred stack is React-Native but I have experience in native development with Swift for iOS and native Android development in Java. I'd love to help your project at any stage, whether it's UX design, software development, API integration, data migration, or even just bug fixes & documentation. Whether you've got a new idea for an app or need a consult for a redesign on one of your micro-service containers, let me know how I can assist!

🏆 𝗘𝘅-𝗚𝗼𝗼𝗴𝗹𝗲 & 𝗔𝗺𝗮𝘇𝗼𝗻 (𝗔𝗪𝗦) 𝗖𝗹𝗼𝘂𝗱 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 | 𝟮𝟬+ 𝗬𝗲𝗮𝗿𝘀 𝗼𝗳 𝗘𝘅𝗽. 🤝 𝗙𝗿𝗲𝗲 𝟯𝟬–𝟲𝟬 𝗺𝗶𝗻𝘂𝘁𝗲 𝗰𝗼𝗻𝘀𝘂𝗹𝘁𝗮𝘁𝗶𝗼𝗻 before starting the project 𝗨𝗦-𝗯𝗮𝘀𝗲𝗱 𝗦𝗲𝗻𝗶𝗼𝗿 𝗔𝗪𝗦 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁, 𝗔𝗪𝗦 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 & 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗲𝗱 𝗚𝗼𝗼𝗴𝗹𝗲 𝗖𝗹𝗼𝘂𝗱 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁 𝗧𝗿𝘂𝘀𝘁𝗲𝗱 𝗯𝘆 𝗘-𝗰𝗼𝗺𝗺𝗲𝗿𝗰𝗲, 𝗙𝗶𝗻𝘁𝗲𝗰𝗵, 𝗛𝗲𝗮𝗹𝘁𝗵𝗰𝗮𝗿𝗲 & 𝗜𝗻𝘀𝘂𝗿𝗮𝗻𝗰𝗲 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 𝘄𝗼𝗿𝗹𝗱𝘄𝗶𝗱𝗲 𝗖𝗼𝗹𝗹𝗮𝗯𝗼𝗿𝗮𝘁𝗲𝗱 𝘄𝗶𝘁𝗵 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 𝗮𝗻𝗱 𝘁𝗲𝗮𝗺𝘀 𝗮𝗰𝗿𝗼𝘀𝘀 𝘁𝗵𝗲 𝗨𝗦, 𝗨𝗞, 𝗘𝘂𝗿𝗼𝗽𝗲, 𝗮𝗻𝗱 𝗨𝗔𝗘 If your cloud bill keeps climbing every month for no clear reason, your deployments feel slow and risky, or server downtime keeps costing you customers and revenue, I know exactly how frustrating that is. Most businesses run into these problems because their cloud infrastructure was never properly architected from the start, their CI/CD pipelines are outdated, or security and monitoring simply weren't set up right. This is exactly what I fix every day. Whether it's a messy AWS Architecture that's bleeding money, a GCP DevOps pipeline that's holding your team back, or legacy systems that desperately need to move to the cloud. I don't just write code, I dig into the real problem behind your infrastructure and deliver a solution that cuts costs, boosts performance, and lets you finally stop worrying about 3 AM outage calls. 𝗔𝗹𝗿𝗶𝗴𝗵𝘁, 𝗾𝘂𝗶𝗰𝗸 𝗶𝗻𝘁𝗿𝗼 𝗯𝗲𝗳𝗼𝗿𝗲 𝘄𝗲 𝗱𝗶𝘃𝗲 𝗶𝗻, 𝗵𝗲𝗿𝗲'𝘀 𝗮 𝗹𝗶𝘁𝘁𝗹𝗲 𝗮𝗯𝗼𝘂𝘁 𝗺𝗲. 😊 With 20+ years of hands-on experience, I work as an AWS Developer, AWS DevOps expert, and GCP DevOps engineer, helping businesses move to the cloud faster, cheaper, and safer. I've had the privilege of working directly with teams at Google and Amazon Web Services, which means I don't just know best practices, I helped write them. As a GCP Engineer and Google Cloud Architect, I specialize in building cloud systems that just work, no downtime, no headaches, no wasted budget. Whether you need a GCP Developer to build from scratch, or someone skilled in devops google cloud automation to fix what's broken 🏆 𝗣𝗥𝗢𝗙𝗘𝗦𝗦𝗜𝗢𝗡𝗔𝗟 𝗖𝗘𝗥𝗧𝗜𝗙𝗜𝗖𝗔𝗧𝗜𝗢𝗡𝗦:- 🥇 AWS Certified Solutions Architect – Professional 🥇 AWS Certified DevOps Engineer – Professional 🥇 AWS Certified SysOps Administrator – Associate 🥇 AWS Certified Developer – Associate 🥇 GCP Cloud Architect 🥇 GCP Cloud DevOps Engineer 🥇 IBM Certified XML Developer 🥇 IBM Enterprise Connectivity with J2EE 🥇 Sun Certified Java Programmer 🥇 Sun Certified Java Web Components Developer 💥 𝗦𝗼𝗺𝗲 𝗼𝗳 𝗺𝘆 𝗿𝗲𝗰𝗲𝗻𝘁 𝗵𝗶𝗴𝗵-𝗶𝗺𝗽𝗮𝗰𝘁 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 𝘁𝗵𝗮𝘁 𝘀𝗽𝗲𝗮𝗸 𝗳𝗼𝗿 𝘁𝗵𝗲𝗺𝘀𝗲𝗹𝘃𝗲𝘀:- ➝ Insurance (AWS Developer): Designed a disaster recovery solution with 99.99% uptime. ➝ Media Company (AWS DevOps): Improved CI/CD pipeline, reducing deployment time by 90%. ➝ Healthcare (GCP DevOps): Automated deployment as a Google Cloud Engineer, cutting downtime by 40%. ➝ E-Commerce (AWS Architect): Migrated 50+ apps, reducing costs by 30% and improving performance by 25%. ➝ Financial Services (GCP Architect): Migrated data warehouse to Google Cloud Platform, cutting processing time by 40%. ➝ Retail (GCP Developer): Developed a recommendation engine using devops google cloud practices, increasing engagement by 20%. 𝗟𝗲𝘁’𝘀 𝘀𝗰𝗵𝗲𝗱𝘂𝗹𝗲 𝗮 𝗳𝗿𝗲𝗲 𝟯𝟬-𝗺𝗶𝗻𝘂𝘁𝗲 𝗰𝗼𝗻𝘀𝘂𝗹𝘁𝗮𝘁𝗶𝗼𝗻 𝘄𝗵𝗲𝗿𝗲 𝗜 𝗰𝗮𝗻 𝘄𝗮𝗹𝗸 𝘆𝗼𝘂 𝘁𝗵𝗿𝗼𝘂𝗴𝗵 𝗲𝘃𝗲𝗿𝘆𝘁𝗵𝗶𝗻𝗴 𝘀𝘁𝗲𝗽 𝗯𝘆 𝘀𝘁𝗲𝗽. Best, 𝐌𝐮𝐡𝐚𝐦𝐦𝐚𝐝 𝐌𝐚𝐧𝐬𝐨𝐨𝐫

With over 10 years of hands-on experience in architecting, automating, and optimizing mission-critical applications in AWS, I help businesses streamline their infrastructure, reduce operational overhead, and launch faster. From startups building their first cloud environment to enterprises modernizing legacy systems—I bring a track record of delivering impactful results. What I bring to your project: • Cloud Infrastructure Design & Automation ☁️ I specialize in Infrastructure as Code (IaC) using AWS CloudFormation and Terraform, enabling repeatable and robust infrastructure. • Serverless & Scalable Backends ⚙️ I’ve architected and launched serverless applications using Lambda, API Gateway, DynamoDB, ECS Fargate, and much more—powering everything from AI tools to mobile games with thousands of daily users. • DevOps & CI/CD Pipelines 🚀 I build fully automated pipelines to accelerate your development lifecycle, reduce errors, and ensure fast, reliable deployments. • Python-Powered Solutions 🐍 From automation scripts to backend services, I leverage Python to drive efficiency and innovation. • Cloud Security & Cost Optimization 🔐💰 I ensure your environments are secure, compliant, and cost-effective. I’m passionate about helping businesses get the most out of the cloud. Whether you’re launching a new product, modernizing infrastructure, or looking to optimize for scale, I’m here to help you succeed.