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Hello! I'm Muhammad Rizal Pahlevi, a versatile Software Engineer with expertise in both Backend Development and DevOps. I help businesses build reliable applications and keep them running smoothly in production. 🛠️ Skills Snapshot: Backend Development: PHP (Laravel, Octane, Vapor), Node.js, Golang, Django, API design, microservices DevOps & Cloud: Docker, Docker Compose, AWS ECS/Fargate, Lambda, Secrets Manager, Redis, MongoDB, PostgreSQL CI/CD Pipelines: GitLab CI/CD, GitHub Actions, automated testing and deployments Infrastructure & Security: NGINX, SSL/TLS, environment variables, logging, monitoring, IAM roles 🌐 What I Offer: End-to-end support: from writing backend code to automating deployments Scalable, secure, and optimized systems for high-traffic environments Strong debugging and problem-solving skills in both development and operations Collaborative and reliable partnership for ongoing projects 💡 Why Choose Me: Adaptable: can jump between backend coding and infrastructure tasks Results-driven: I focus on delivering solutions that are stable and scalable Professional and detail-oriented: I treat every project as if it were my own 🌟 Let’s Work Together! Whether you need a backend engineer, a DevOps specialist, or someone who can handle both, I’m ready to support your project and help you succeed.

More than 20 years in .NET as a full stack C# developer and solution architect. ETL, high performant and resilient distributed systems are my primary fields of expertise. Can go bare or can go Claude-boosted, no vibe coding. What I love to do: ▶ Design and build high load or close-to-RT application/platform from scratch ▶Harness AI agents to cut implementation time 5x dedicating myself to architecture and problem solving ▶ Solve non-trivial performance tasks ▶ Debug, troubleshoot and refactor legacy projects ▶ Audit software solutions to spot potential scalability, performance, data consistency or operation problems. ▶ Integrate REST/Sockets APIs into your application, including crypto-parts (BTC, ETH, ERC-20 and others) My areas of expertise: ◉ C# NET full stack ◉ High load, distributed, close to RT systems architect ◉ Microsoft SQL Server ◉ External APIs of all sorts and complexity ◉ Cryptocurrencies essentials and integration ◉ HubSpot API (4+ years intensive usage in high load multi-tenant system) ◉ Clouds: AWS and Azure ◉ CI/CD: BitBucket, GitHub My background and skills: ★ 20+ years of experience in .NET software development ★ 5 years of software architecture design and implementation. ★ Highload backend solutions ★ 5 years of extensive experience in development team leading ★ Fluent written and spoken English ★ Computer science Bachelor degree in 2006 Career highlights through recent past: ★ Reworked HubSpot-targeting product that allowed business operation growth from 80 clients to 1000+; turned another PoC into production ready software serving hundreds of customers by now ★ Mission critical accounting software for customer from scratch, 10+ years in use by now ★ Fully automated cryptocurrency trading engine ★ Refactored spaghetti-coded legacy system to bring it to a competitive state and allow for implementing state of the art AI-driven features ★ Mission critical backend data management system from scratch ★ High load optimization for Oracle-based national telecom reporting tool Technologies I prefer to deal with: ☑ C# net10/9/8/6 ☑ Claude Code via custom harness for all the web UI prototypes ☑ Blazor, AspNetCore, AspNet MVC ☑ Legacy C# all the way down to NET 1.1 and ASPNET Forms ☑ EntityFramework (EFCore) and Dapper ☑ CI/CD via GitHub or BitBucket ☑ WPF/UWP mvvm style ☑ JavaScript/jQuery ☑ Microsoft SQL Server, SSRS Technologies out of my preferred list I still had significant experience with: ● RDBMS: Postgres 11-16, MySQL 4-8, Oracle 10g ● Node.js SPA

Senior Cloud Architect/Engineer with years of experience designing large-scale, event-driven, and serverless platforms on AWS. Worked on large projects in a wide variety of business areas: e-commerce, healthcare, real estate market analysis, etc. **How I work** • Business-focused and strategic. Any architecture or engineering solution I develop is always driven solely by business requirements. I never begin development with the question, "How will we implement this problem?" The first step in solving any problem is clarifying the business requirements: "What does the business want to achieve, and how does this align with its long-term strategy and ROI expectations?" • Stakeholder Engagement I always strive to be a trusted technology advisor to my employer's business and its clients. In practice, this means I actively participate in all stages of discussions of business challenges or problems. During discussions, I strive to develop a clear and concise solution plan. I not only defend my opinion but also listen to others' ideas, adapting my own to theirs. Once the discussion is concluded and a decision is made, I get to work and do all my best to achieve the result, regardless of how closely the decision aligns with my initial vision. • Problem-solving and an analytical approach. My many years of experience have confirmed time and again: a problem requiring a solution rarely lies on the surface. More often than not, we see only its external manifestations, its symptoms. A real "cure" always requires an initial analysis, delving deeper into the root of the problem. And this requires analysis and meticulous attention to detail. Only then can I provide businesses with an innovative solution to their problem - and often, to several problems at once. • Proactivity. I never wait for a ticket to open before I start thinking and acting. I'm always closely monitoring everything happening in the company, the team, and the product. This allows me to propose innovations or anticipate problems long before they become one. • Leadership When leading a team or group, ensuring collaboration between cross-functional groups, I always strive to optimize interaction and communication processes as much as possible. My colleagues quickly became convinced that my suggestions in this area truly make life better, development and maintenance more predictable, and business more stable. In the vast majority of cases, I quickly gain credibility among my colleagues; they listen attentively to my recommendations and actively discuss them, which increases everyone's engagement in achieving optimal results. • Adaptability. Yes, to stay in place, you have to run very fast. This idea by L. Carroll is more relevant now than ever. Therefore, I spend 1-1.5 hours of my free time almost every day learning new tools, approaches, and technologies. This is especially true when joining a new team, where the lack of existing knowledge is always obvious. **A few facts about me** • AWS Well-Architected is my favorite framework. • Led cloud transformations from monoliths to serverless microservices, reducing operational overhead by 30–40%. • 12,000+ Upwork hours with 100% client satisfaction. Core Expertise • Architecture & Strategy: Serverless design, orchestration (Step Functions, EventBridge), multi-tenant SaaS, CI/CD, domain-driven design. • AWS Mastery: EC2/ECS/ECR, ALB/NLB, Lambda, API Gateway, DynamoDB, Aurora, S3, Cognito, CloudFormation/CDK, CloudFront, CloudWatch... and others. • Engineering Foundation: Full-stack background (PHP, TypeScript, Python) enabling stateless API and infrastructure integration. Today Focus • Building AI agents leveraging LLMs, MCPs, and RAG. CrewAI/LangChain/LangGraph • SDD (Specification-Driven-Development). Claude Code, Kiro, GitHub SpecKit, Windsurf, Codex/Copilot. Technical Skills ⚙️ Architecture & Delivery: Event-driven microservices (EventBridge · StepFunctions · Kafka) · CI/CD pipelines · IaC (CloudFormation/CDK/Terraform) · Observability (CloudWatch, X-Ray, Prometheus, Grafana, DataDog). 🗄️ Data Layer: DynamoDB · Aurora · MySQL · MongoDB · Athena · Glue — optimized ETL and analytics pipelines. 🔐 Security: IAM [+Identity Center] · KMS · Secrets Manager · WAF — implemented secure, compliant SaaS identity systems. 💻 Programming & Frameworks: TypeScript · PHP (Symfony, Laravel) · Go · Python · React · Node.js · Next.js — full-stack depth for end-to-end delivery. 🧰 Tooling: Docker · Git · Jenkins · Jira · Confluence · Slack · JetBrains IDEs. Let’s discuss how I can help design and scale your next-generation platform.

Hi, I am an Expert Android Developer with more than 11 years of experience in various industries. Deliver good quality from requirement to deployment, familiar with maintaining, improving complex codebase & fast learner. Please feel free to contact me if you need my help to: - Find out technology stack in your Android Projects - Create pixel perfect UI Design - Maintain your apps project and fixing bug issue - Develop new features in your Android Projects - Integrate CI/CD Main tech stack I have worked with include: - Git - Java - Kotlin - Unit Test - Gradle - Android Jetpack (e.g. Compose, Room, WorkManager, Navigation) - Retrofit - RxJava - Coroutines - Realm - Koin / Hilt - REST API - XML / JSON - Firebase - Flutter - Kotlin Multiplatform (KMM / KMP) - iOS Secondary tech stack : - PHP (Laravel, Yii, Codeigniter) - MySQL / PostgreSQL - Redis - Docker - DigitalOcean / Heroku / AWS Hardware integration: - Bluetooth Low Energy - USB Serial Communication - Thermal Camera - Thermal Printer Why me : - Experienced Android Developer over 11 years - Top Rated Plus freelancer - Free initial consultation Cheers, Andhika

🖥️ DevOps Engineer | AWS, Kubernetes, Docker, CI/CD Overview: I'm a DevOps Engineer with a strong background in cloud infrastructure, automation, and CI/CD. I help businesses streamline their deployments, improve system reliability, and reduce costs. I have hands-on experience with AWS, Docker, Kubernetes. I’m here to help you build and optimize your infrastructure, set up automated workflows, and ensure smooth deployments. 🖥️ Skills: ✅ Cloud Platforms: AWS, GCP, Alibaba Cloud ✅ Containers: Docker, Kubernetes ✅ Automation & IaC: Terraform, Ansible ✅ CI/CD Pipelines: Jenkins, GitLab CI/CD ✅ Monitoring & Logging: Prometheus, Grafana ✅ Scripting: Bash, Python 🖥️ Experience: ✅ Built and managed AWS infrastructure for scaling applications. ✅ Designed CI/CD pipelines with Jenkins for faster, reliable deployments. ✅ Set up Kubernetes clusters and automated deployments with Helm. 🖥️ System Administrator ✅ Linux Distribution: Debian, Ubuntu, Redhat, CentOS ✅ Nginx ✅ Apache Httpd (Web Server) ✅ MySQL / MariaDB ✅ PostgreSQL Programming ✅ PHP (Laravel) ✅ Golang You can contact me if my skills suit your development or expand your system/apps. Feel free to contact me

Building scalable, cost-effective cloud solutions for B2B Industry With several years of experience, I manage, automate, and optimize cloud infrastructures on AWS, Azure, and GCP. I focus on solving real-world problems: reducing deployment complexity, cutting cloud costs, and ensuring systems scalable. Available for short-term fixes or ongoing partnerships 🙌.