I help teams run production systems that stay online, whether they live in the cloud, on Kubernetes, or on bare-metal servers handling massive state and data. I’m a Senior Site Reliability / DevOps Engineer with 8+ years of hands-on experience operating infrastructure across AWS, GCP, Azure, DigitalOcean, and bare-metal environments. My work goes far beyond deployments — I design, operate, and recover systems where downtime, data corruption, or slashing are real risks. What I do in practice • Operate bare-metal servers (disk layout, RAID, IO tuning, recovery) • Run blockchain validator / RPC / full / archive nodes in production • Design safe Kubernetes architectures (StatefulSets, leader election, autoscaling trade-offs) • Keep large PostgreSQL systems stable under heavy load • Build monitoring that detects real failures, not just “pod is up” • Automate ops workflows using Go and Python Blockchain & validator experience I run and maintain validator node services, where reliability and correctness matter more than raw throughput: Validator and RPC node setup and maintenance Safe handling of upgrades, restarts, and snapshots Monitoring block height, peer health, syncing state, and reorgs Avoiding data corruption and slashing risks Designing leader-based consumption where horizontal scaling is unsafe This includes both cloud-based and bare-metal deployments, depending on performance and cost requirements.

I am a highly skilled and experienced DevOps Engineer with expertise in AWS, Infrastructure as Code (IaC) using AWS CDK TypeScript | Pulumi, Kubernetes multi-tenancy using vCluster combined with Karpenter, KEDA, and EKS. I also have extensive knowledge in building and managing Apache Airflow platforms on EKS and developing Kubernetes manifests as code using CDK8S. Additionally, I possess strong automation skills using Python and Bash shell scripting. ✅ Designed, implemented, and maintained AWS infrastructure for multiple projects using AWS CDK TypeScript. ✅ Implemented Kubernetes multi-tenancy using vCluster combined with Karpenter, KEDA, EKS and ArgoCD. ✅ Set up and managed Apache Airflow platforms on EKS for workflow automation and scheduling. ✅ Created Kubernetes manifests as code using CDK8S for streamlined deployment and management. ✅ Experienced in migration of an on-premises PostgreSQL database to RDS Aurora Serverless V2 ✅CICD: Gitlab CI, Github Action, Codepipeline, Jenkins, Azure Devops.

I help startups and growing businesses build, improve, and scale modern web applications. With 6+ years of experience in full-stack development, I specialize in building reliable backend systems, scalable APIs, cloud infrastructure, and production-ready applications. While my strongest expertise is backend engineering, I also work across the full stack to deliver complete solutions when needed. Clients typically work with me when they need someone who can quickly understand an existing codebase, solve difficult technical problems, and move features to production with confidence. 🚀 Core Expertise 🟢 Frontend • React.js • Next.js • TypeScript • JavaScript • HTML / CSS • Tailwind CSS 🔵 Backend • Node.js • NestJS • Express.js • Fastify • REST APIs • GraphQL • Authentication & Authorization • Webhooks & Third-party Integrations 🟣 Cloud & Infrastructure • AWS (S3, EC2, Lambda, RDS, CloudWatch) • Azure (VM, Blob Storage, Functions, Service Bus) • Docker • CI/CD Pipelines • Production Deployments 🟠 Databases • PostgreSQL • MySQL • MongoDB • Redis • Prisma ORM 💡 What I Usually Help Clients With ✅ Full stack web application development ✅ Backend architecture and API development ✅ SaaS platform development ✅ Payment and subscription integrations ✅ Database design and optimization ✅ Cloud deployment and infrastructure ✅ Debugging and production issue resolution ✅ Performance optimization ✅ Refactoring and modernization of existing systems ✅ Long-term product development 🤝 What You Can Expect Working With Me 🎯 Clear and proactive communication 🎯 Clean and maintainable code 🎯 Fast understanding of existing systems 🎯 Practical engineering decisions 🎯 Ownership mindset and reliable delivery I focus on building software that is scalable, maintainable, and aligned with business goals—not overengineering. Whether you need to build something from scratch, improve an existing application, or solve complex technical challenges, I’d be happy to help. Let’s discuss your project.

Java & Spring Boot Architect | AI-Powered Backend Systems | 14+ Years Experience I am a Java & Spring Boot architect with 14+ years of hands-on experience building production-grade enterprise systems — from core banking platforms to AI-integrated microservices. I hold a BSc in Computer Science & Technology and now work as a dedicated full-time freelancer on Upwork, bringing the same rigour I applied in large fintech institutions directly to client projects. My core expertise spans Spring Boot, Spring Framework, and microservices architecture, with deep practical knowledge of SSO & Keycloak, Docker, DevOps pipelines, and GitLab CI/CD. I design systems that are secure, observable, and built to scale — whether that means integrating Kafka for event-driven flows, Flowable BPMN for workflow automation, or AWS for cloud infrastructure. Over the past year I have been heavily invested in the AI/LLM frontier: building Spring AI applications, wiring up MCP (Model Context Protocol) servers, running local models via Ollama, and implementing advanced patterns like tool calling, RAG pipelines, and AI agent workflows. I see AI not as a separate layer but as a first-class citizen inside enterprise Java backends. If you need someone who understands both the old-school reliability of enterprise Java and the new possibilities of AI-augmented architecture — let's talk. CORE STACK: Java · Spring Boot · Spring Framework · Microservices · REST API · Keycloak/SSO · Docker · GitLab CI/CD · DevOps · Kafka · Flowable BPMN · Oracle · PostgreSQL · AWS · Angular AI & EMERGING TECH: Spring AI · MCP · Ollama · Tool Calling · AI Agents · RAG Pipelines · pgvector · LLM Integration · OpenAI API · Prompt Engineering DOMAINS: Banking & Fintech · SWIFT/ISO 8583 · AML/CFT Compliance · NPSB/RTGS · ATM Switch · eKYC · Healthcare/EMR · Document Management

I help startups and growing teams deploy faster, safer, and more reliably using modern DevOps and DevSecOps practices. I’ve worked on 60+ projects building scalable infrastructure, automating deployments, and integrating security directly into CI/CD pipelines. 🔧 What I can do for you: Build and optimize CI/CD pipelines (GitHub Actions, GitLab CI, Jenkins) Design and manage AWS infrastructure (EC2, VPC, IAM, CloudFormation) Containerize and deploy apps using Docker & Kubernetes Implement Infrastructure as Code (Terraform, Ansible) Integrate DevSecOps pipelines (Snyk, Bandit, Bearer, DefectDojo) Improve system reliability with monitoring (Prometheus, Grafana) 🔐 DevSecOps focus: I don’t just deploy — I help you ship securely by: Adding automated security scans in CI/CD Managing vulnerabilities with centralized tools Following best practices for cloud security and access control 💡 Why clients work with me: Clear communication (no DevOps jargon confusion) Fast and reliable delivery Practical solutions not over-engineered setups

Need one senior engineer who can build the whole thing, the app, the cloud infra, the security, and the AI automation on top, and actually ship it to production? That's what I do, end to end. 12+ years building secure, scalable systems. I've led engineering for multi-million-dollar clients, run hybrid on-prem + cloud infrastructure at 99.95% uptime, and I now build AI automation that removes real hours from real businesses. You get one person who owns the outcome instead of a chain of specialists pointing at each other. ━━━━━━━━━━━━━━━━━━━━ WHAT I DO ▸ AI Automation & AI Engineering LLM agents, RAG over your own data, n8n and API-driven workflows, chatbots, and self-hosted inference. Not prompt demos, production pipelines with error handling, idempotency, and monitoring built in. If a task eats your team's hours every week, I automate it properly. ▸ Full-Stack Development End-to-end web and mobile products: Next.js / React / React Native front ends, FastAPI / Node / Django back ends, PostgreSQL / Redis data layers. Clean, documented code your next developer can actually maintain. ▸ DevSecOps, Cloud & Infrastructure AWS (EKS, Lambda, RDS, S3, CloudFront), Docker, Kubernetes, Terraform, Ansible, GitLab/GitHub CI/CD. Reproducible infra-as-code, not hand-configured snowflakes. Security baked in from day one: WAF, IAM hardening, SAST/DAST. Cut critical vulnerabilities ~80% quarter-over-quarter in past roles, and refactored architectures to drop cloud spend ~20% while improving reliability. ━━━━━━━━━━━━━━━━━━━━ HOW I WORK Clear communication, scope agreed up front, and honest timelines. I ask the annoying questions early so we don't rebuild in month three. You'll always know where things stand. ━━━━━━━━━━━━━━━━━━━━ CORE STACK Languages: Python, JavaScript, TypeScript, PHP, C/C++, Bash, SQL Front end: Next.js, React, React Native, Vue, Nuxt, Tailwind Back end: FastAPI, Node/Express, Django, Laravel, REST, GraphQL Cloud/DevOps: AWS, GCP, Azure, Docker, Kubernetes, Terraform, Ansible, CI/CD, Linux, Nginx AI/ML: LLMs, RAG, agentic workflows, MCP, Ollama, Qdrant, n8n, prompt engineering Data: PostgreSQL, MySQL, MongoDB, Redis, Elasticsearch, Supabase Security: WAF, IAM, OAuth2, OWASP, SAST/DAST, TLS, Cloudflare ━━━━━━━━━━━━━━━━━━━━ Whether you need an MVP shipped fast, an AI workflow that saves your team hours a week, a legacy system modernized, or your infrastructure secured and made reliable, send an invite and tell me the problem you're solving. I reply within a few hours.

I'm Diego Garcia. I help companies build, improve, and maintain reliable cloud infrastructure with a strong focus on AWS, Kubernetes, Terraform, and CI/CD automation. I’ve supported clients in long-term and short-term engagements, helping them troubleshoot production environments, automate deployments, improve infrastructure reliability, optimize cloud costs, and strengthen DevOps practices. My experience includes: AWS infrastructure design and operations Kubernetes and containerized workloads Terraform and infrastructure as code CI/CD pipelines and deployment automation Docker-based environments Cloud migrations and DevOps implementation Ongoing part-time / retainer DevOps support I’m especially valuable for teams that need a hands-on DevOps engineer who can quickly understand existing environments, fix issues, and bring structure to cloud operations. Available for: Part-time DevOps support Monthly retainers Infrastructure improvements Troubleshooting and production support Cloud migration and automation projects

Hello! I'm Harsh, a certified AWS DevOps Engineer passionate about transforming cloud infrastructure through innovative solutions. I focus on automating workflows, building scalable cloud systems, and eliminating bottlenecks to save time and money. 🔧 How I Transform Projects: ✓ Streamlined Integration: Connecting dev and ops for efficient workflows. ✓ Dynamic Infrastructure: Designing and building cloud/cluster infrastructure as per client requirements. ✓ Advanced CI/CD: Building production-grade security-focused pipelines that integrate multiple tools for seamless delivery. ✓ Comprehensive Troubleshooting: Resolving complex system, network, service, and tool-related issues across environments. ✓ Optimization: Enhancing cloud resources for better scalability, reliability, and performance. 🛠️ TECH STACK: → Cloud: AWS (Highly Expert) | Azure → IaC: Terraform (Highly Expert) | CloudFormation → CI/CD: Jenkins | GitHub Actions (Highly Expert) | GitLab CI | AWS CodePipeline | ArgoCD → Containers: Docker (Highly Expert) | Kubernetes EKS (Highly Expert) | Kubernetes ECS → Testing: Trivy | SonarQube → Security: Owasp | Aqua Security | Dockle → Config Mgmt: Ansible → Tools: Apache HTTP Server | Nginx | EasyPanel/CloudPanel (Highly Expert) → Compliance: Vanta | Kyverno | Prowler → Networking: SSL/TLS | Firewalls | DNS | API Gateway | NACL | WAF | Calico | Istio → Monitoring: Cloudwatch | Prometheus+Grafana | EFK Stack → Scripting: Python | Bash (Highly Expert) | AWS Lambda → OS: Linux (Highly Expert) | Windows Server | MacOS 🎓 CERTIFICATION: ✓ AWS Cloud Practitioner ✓ Microsoft Azure Fundamentals (AZ-900) ✓ Microsoft Security, Compliance, and Identity Fundamentals (SC-900)

Cloud DevOps Engineer with 10+ years of experience in AWS (Most Experienced) and DevOps Services. Also well proficient in migration of on-prem applications to AWS cloud. Very well versed in Terraforming any project that can be reusable if you have other channel partners that want to deploy their application on their cloud. ---- DevOps Tools ---- ✅ Terraform, CloudFormation ✅ Ansible ✅ Jenkins, CircleCI, GitLab ✅ Docker, Kubernetes, AWS EKS, AWS ECS / Fargate ✅ GitHub / BitBucket ✅ Python ---- Cloud Services (AWS) ---- ✅ Working with AWS Services i.e AWS EC2, VPC, IAM, S3, AWS ECS, AWS EKS ✅ Design and implement highly available and self-healing infrastructure ✅ Solution designing using AWS Services for highly available infrastructure. ✅ Provide complete automation solution for end-to-end deployment. ✅ Reuseable terraform code for your project ✅ On-prem / private datacenter to AWS migration ✅ From LightSail to EC2 migration ✅ Cost Optimization for your AWS Infrastructure. ✅ Configure Pipelines for your Software Development Lifecycle (SDLC) using, Jenkins, Github Actions, Bamboo, Drone --- Monitoring AND Logging --- ✅ AWS CloudWatch & CloudTrail ✅ ELK (Elasticsearch, Logstash, Kibana) ✅ DataDog, NewRelic --- Development --- ✅ Engaging User Interface (UI) Development ✔ Technology Stack: Proficient in creating visually appealing and interactive user interfaces using: ✔ Core Languages: JavaScript and TypeScript for dynamic web functionality and enhanced code maintainability. ✅ Frontend Frameworks/Libraries: ✔ ReactJS: Building component-based UIs for complex single-page applications. ✔ VueJS: Developing progressive and easily integrable user interfaces. ✅ Versatile API Development: ✔ Architectural Expertise: Skilled in designing and implementing various API architectures: ✔ RESTful APIs: Creating stateless and resource-based APIs for broad compatibility. ✔ GraphQL: Developing efficient and flexible APIs by allowing clients to request specific data. ✔ gRPC: Building high-performance, language-agnostic APIs using Protocol Buffers. ✔ Microservices: Architecting scalable and independent services for complex applications. ✔ Backend Technologies: Experienced in utilizing powerful backend languages: ✔ Node.js: Building scalable and event-driven APIs with JavaScript. ✔ Python: Developing robust and versatile APIs for various application needs. ✅ Masterful Data Management: ✔ Database Proficiency: Expertise in managing and interacting with diverse database systems: ✔ Relational Databases: MySQL for structured data and transactional integrity. ✔ NoSQL Databases: MongoDB for flexible, document-oriented data storage. ✔ Document Databases: DocumentDB (likely referring to a cloud-based document database ✔ service) for scalable and managed document storage.

Hi, I'm Oleksiy. I am a senior engineer with 9 years of experience. I like to write clean code, and although I have a lot of experience, I spend time every day learning new languages, frameworks, optimizing workflows, and so on. One of my biggest strengths is solving problems. My task is to realize YOUR ideas and create an amazing product. I specialize in architecting high-scale e-commerce ecosystems and complex microservices. With a focus on the TALL stack and AWS, I transform business requirements into scalable, production-ready web applications. Technical expertise: Core Frameworks: ✔️ PHP 8.x, Certified Laravel Expert; ✔️ TALL Stack (Tailwind, Alpine, Livewire); ✔️ Filament PHP (Admin & Panels). AI & Intelligent Systems: ✔️ LLM Integration (OpenAI, Claude, OpenRouter); ✔️ Vector Databases; ✔️ AI-driven automation. Cloud Architecture (AWS & GCP): ✔️ AWS: EC2, Fargate, Serverless (Lambda), SQS/SNS, EventBridge, S3; ✔️ GCP: Cloud Run, BigQuery, Load Balancing. Database & High-Performance Search: ✔️ SQL/NoSQL: PostgreSQL, MySQL, MariaDB, MongoDB, SingleStore; ✔️ Caching & Discovery: Redis (Pub/Sub), ElasticSearch, Memcache. DevOps & Infrastructure: ✔️ Docker (Expert); ✔️ Laravel Forge/Vapor/Envoyer; ✔️ CI/CD (GitHub Actions, Jenkins). Core Competencies: ✔️ AI Orchestration & LLM Integration. Engineering intelligent systems using OpenAI (GPT-4o), Claude, and AWS SageMaker for automated content generation, sentiment analysis, and conversational AI (Telegram/Slack/Discord). ✔️ High-Scale Cloud Architecture. Designing and deploying resilient, serverless infrastructures on AWS Fargate and Google Cloud Run. Expert in auto-scaling, load balancing, and handling high-traffic surges for rapidly growing startups. ✔️ Enterprise E-Commerce & FinTech. - Payment Systems: Seamless integration of Stripe, PayPal, Braintree, and specialized providers like LiqPay. - ERP/CRM Sync: Deep-level integration with HubSpot, E-Conomic, and Uniconta. ✔️ Advanced Microservices & Backend Engineering. Architecting distributed systems and microservices using Laravel. Expert in background data processing via complex queue management (SQS/Redis) and scheduled task orchestration. ✔️ Full-Cycle Platform Development End-to-end engineering of bespoke CRMs, multi-vendor marketplaces, and high-performance SaaS applications using the TALL Stack and Filament PHP. Feel free to contact me about projects of any complexity. I guarantee that the work will be done efficiently and on time.