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At Roobykon Software, I specialize in automating, scaling, and optimizing infrastructure and development workflows to help our clients achieve efficient, reliable software delivery. With over 10 years of hands-on experience as a Senior DevOps Specialist, I ensure robust integration and scalable operational environments for every project. Our team is dedicated to empowering companies to build and grow their marketplace businesses with cutting-edge DevOps solutions. 🏆 Area of expertise: • E-commerce (including multi-vendor marketplaces and product/service platforms) • FinTech (payment gateways, escrow systems, and custom financial solutions) • CRM Systems (tailored customer relationship management platforms) • Logistics (marketplaces for delivery, warehousing, and transportation) • Marketplace Development (B2B, B2C, peer-to-peer, product, service, and rental-based platforms using Sharetribe and custom-built solutions) • Travel and Tourism (booking platforms for accommodations, experiences, and tours) • Car Rent and Rental Websites (multi-vendor vehicle rental platforms) • Retail (multi-vendor e-commerce platforms, digital storefronts) • Construction and Real Estate (property listing marketplaces, contractor bidding platforms) • Aviation (charter services, private jet booking platforms) and boat rental (yacht, boats, jet ski) • Entertainment and Social Networking (event booking, ticketing, and social interaction platforms) • Marketing and Advertising (customized marketplaces for ad placements, influencer marketing platforms) • Insurance (platforms for comparing and purchasing insurance policies) • Industrial (B2B marketplaces for industrial goods and services) • Marketplaces for hospitality services, catering, and restaurant supplies • Mental Health and Healthcare (platforms for telemedicine, therapy services, healthcare provider listings) • Management (resource management platforms for HR, procurement, and project collaboration) Got an idea but unsure how to make it happen? We’ll provide tailored solutions to fit any budget and ensure everything is ready to go. With every project, we work as if it’s our own, always prioritizing your success. Buzzwords: Automation Continuous Integration Continuous Deployment (CI/CD) Infrastructure as Code (IaC) Microservices Orchestration Docker Kubernetes Monitoring Logging Containerization Scalability Load Balancing High Availability Disaster Recovery Fault Tolerance Infrastructure Automation Blue-Green Deployment Canary Deployment DevSecOps Secrets Management Immutable Infrastructure Jenkins Ansible Terraform GitOps Incident Management Rollback Auto-scaling EC2 S3 Lambda RDS Elastic Beanstalk CloudFormation ECS Fargate EKS Route 53 CloudWatch IAM SQS SNS CloudFront VPC Elastic Load Balancer (ELB) Redshift DynamoDB AWS Backup AWS CLI CloudTrail Security Groups DNS Management SSL Certificates Hosting Control Panel Domain Management Website Security cPanel Website Backup GoDaddy API Dynos Heroku Pipelines Add-ons Heroku Postgres Heroku Redis Heroku CLI Automated Deployments Buildpacks Git-based Deployments Jenkins CircleCI GitLab CI GitHub Actions Travis CI Pipeline Automation Continuous Testing Continuous Delivery Code Coverage Artifacts Rollbacks Webhooks Build Automation Docker Integration Deployment Automation Serverless Architecture Cloud Infrastructure Virtual Machines (VMs) Networking Configuration Load Balancers Storage Solutions Infrastructure Scaling VPC (Virtual Private Cloud) Network Security Monitoring Infrastructure as Code (IaC) Infrastructure Optimization Marketplace Development Multi-vendor Marketplace Sharetribe Go Sharetribe Flex Custom Marketplace Development Payment Gateway Integration Marketplace Scalability Sharetribe API Marketplace UX/UI Sharetribe Deployment MVC Architecture ActiveRecord Gem Bundler Action Cable RESTful APIs Convention over Configuration Rails Engines Active Job WebSocket Support Background Jobs TDD (Test-driven Development) Sharetribe Customization Sharetribe Expert Sharetribe Flex Sharetribe Go Sharetribe Expert Sharetribe Flex Developer Sharetribe Go Developer New Sharetribe

Your server's down at 3am. Your cloud bill doubled. Deploys are a Friday nightmare. I fix exactly this — fast, with a rollback plan for every change. Results from 49 completed projects (100% Job Success): - 99.9% uptime — real monitoring with Prometheus, Grafana, and structured alerting - 30-60% faster page loads — Nginx/Apache tuning, CDN, TLS hardening, HTTP/2 - 20-35% lower cloud costs — right-sizing, autoscaling, lifecycle policies, FinOps - Deploys in minutes — Docker, Kubernetes, GitOps (ArgoCD/Flux), GitHub Actions, GitLab CI What I do: - Infrastructure & Containers: Linux, Docker, Kubernetes, Helm, Terraform, Ansible - Cloud: AWS, GCP, Azure - CI/CD: GitHub Actions, GitLab CI, ArgoCD, blue-green/canary deploys - Monitoring: Prometheus, Grafana, OpenTelemetry, ELK/OpenSearch - Security: Vault, SBOM/SLSA, Zero Trust, WireGuard/OpenVPN - Scripting: Bash, Python, Go, PowerShell How I start: 1. Quick audit (30-60 min) — what's running, what's breaking, what costs money for no reason 2. Prioritized action plan — what to fix now, what can wait, rollback strategy for every change 3. Early wins in 48 hours — faster response, fewer alerts, lower bill, working backups I don't do "two weeks of discovery." I dig in, find the worst problems, fix them fast. Tell me what's hurting — I'll be straight about whether I can help and what it takes.

Hi there! Are you in need of a DevOps specialist to supercharge your development processes? With over 3 years in the DevOps realm, I've become a master of streamlining operations and optimizing workflows. What technologies have I worked on, and I can help you with: - UNIX systems(Ubuntu/Debian mostly) and networking; - Cloud providers: AWS(VPC, EC2, S3, Auto Scaling Groups(ASG), EBS, RDS, IAM, Elastic Load Balancing(ELB), Route 53, CloudWatch, CloudFront), and GCP; 🔐Databases: RDS(PostgreSQL), Elasticache(Redis), DocumentDB(MongoDB), DynamoDB; - Configuration management tools: Ansible; 📦CI/CD implementation practice using GitHub Actions, GitLab CI/CD, and Jenkins; - Monitoring systems like Datadog, Prometheus, Grafana, and ELK stack; - Containerization and orchestration: Docker and Kubernetes - Infrastructure Provisioning/Management - Terraform, Pulumi, AWS CDK; - Scripting skills (Python, Bash); * I believe that learning new technologies and working with a team are the most critical skills. * I am an open-minded and well-organized person with good communication skills.

⛔️ Stop losing users due to crashing apps, hidden navigation barriers, and unexpected glitches! ✅ I will find critical vulnerabilities in your website, mobile, or SaaS software before they cost you time, money, and reputation. 🎯 CORE STRATEGY & TECHNICAL APPROACH Finding a reliable QA Tester who can dive deep into your product architecture is crucial for a successful launch. I streamline chaotic testing workflows by setting up a clear strategy tailored to your specific business goals, ensuring ✅ 100% requirements coverage across the entire SDLC and STLC. As your QA Tester, I identify: 🐛 Functional bugs & Smart Contract user-flow anomalies 🚦 Performance bottlenecks & Latency issues 🔐 Security threats (OWASP Top 10 & Web3 entry vulnerabilities) — early in the development process to save you time and budget. 📊 PROVEN RESULTS As a results-oriented QA Tester, I focus on tangible impacts and data-driven metrics: 🏆 4+ years of hands-on QA experience delivering high-quality web applications, SaaS, and mobile apps. 🚀 100+ successful releases shipped (including Web3 & AI integrations). 🤖 4,000+ automated tests written and 📝 10,000+ manual test cases designed. 💵 $200,000+ saved for clients through optimized QA automation and early bug detection. ⚡ Optimized CI/CD pipelines to reduce regression cycles from 5 days to 4 hours through parallel test execution. 🚨 1,000+ critical bugs caught pre-release, including memory leaks, race conditions, and SQL injections. 🧩 COMPREHENSIVE SERVICES & EXPERTISE My approach as a versatile QA Tester covers every layer of your application: • 🤖 FULL-STACK AUTOMATION: Built scalable automation frameworks using Playwright, Cypress, and Selenium WebDriver with Page Object Model and BDD practices to ensure your test suite is maintainable and readable. • 🎮 MANUAL QA, GAME & WEB3 TESTING: Whether acting as a methodical manual tester or a dedicated video game tester, I cover mechanics, balance, and UI/UX consistency (Cocos, Unity) alongside standard suites. As a game tester, I ensure bug-free gameplay. Specialize in Web3 testing, verifying dApps, token transfers, and non-custodial wallet interactions. • 🔐 API, AI & SECURITY TESTING: Validation of business logic, authentication tokens, LLM prompt responses, and data integrity using Postman and REST Assured. I conduct security audits based on OWASP standards to protect against unauthorized data access. • 📈 PERFORMANCE & LOAD TESTING: Using JMeter and k6 to simulate high-traffic scenarios (Stress, Endurance, and Spike testing), identifying server-side bottlenecks before they impact users. • 📱 MOBILE APP TESTING: Flawless experience across real iOS (via TestFlight) and Android devices, testing for battery consumption, network switching (4G/5G/Wi-Fi), and interrupt conditions. • ♿ ACCESSIBILITY (A11Y): Guaranteeing WCAG 2.1/2.2 compliance through manual screen reader testing (NVDA, JAWS) and automated audit tools like AXE and WAVE. 📱 REAL DEVICE LAB: Cross-platform verification on real Windows 10/11 laptops, iOS (iPhone via TestFlight), and Android devices. 🛠️ TECHNICAL ECOSYSTEM 📌 Methodologies: Agile, Scrum, Kanban, TDD, CI/CD, DevOps. 🧪 Testing Types: Black-box, White-box, Gray-box, Cross-browser, Localization (L10n), Usability, Integration, and UAT. 💻 Languages: Java, TypeScript, JavaScript, SQL. 🔧 Tools & Web3: Postman, Newman, TestFlight, Metamask, Coinbase Wallet, WalletConnect, Burp Suite, OWASP ZAP, Charles Proxy, Fiddler, Chrome DevTools. ☁️ Infrastructure: Jenkins, GitHub Actions, GitLab CI, Docker, Kubernetes. 📋 Management: JIRA, TestRail, Zephyr, Confluence, Monday, Trello. 🏢 INDUSTRY EXPERIENCE As a QA Tester with deep domain knowledge, I have successfully delivered projects in: 💳 FINTECH, WEB3 & CRYPTO: Secure payment gateways, dApps, DEX/CEX platforms, DeFi protocols, and transaction ledger verification. 🛒 E-COMMERCE: Magento, WordPress, and Shopify platforms with high-load user flows and P2P payments. 🏥 HEALTHCARE & EDTECH: Privacy-compliant systems (HIPAA) and interactive SaaS tools. 🎰 GAMBLING & GAMING: Real-time data processing, social features, and PC/Steam game testing. 🤖 GENERATIVE AI & CMS: Testing data integrity for AI models, AI chat-bots, prompt engineering, and content management flexibility. 💡 WHY MY METHODOLOGY WORKS Choosing me as your QA Tester means getting a specialist who plugs into all stages of the SDLC. I provide developer-friendly logs, videos, and impact assessments to simplify the debug workflow. I adapt fast to changing priorities, update test cases on the fly, and ensure testing stays aligned with your roadmap. I onboarding quickly and ask the right questions to minimize the training you need to provide. ✅ READY TO LAUNCH WITH CONFIDENCE? Don't let a minor bug ruin a major release. 💬 Click the green “Message” or “Invite” button at the top right of this page to discuss how I can help as your QA Tester to make your product stable, secure, and ready for scale!

I am a QA Engineer with over 4 years of experience in manual testing, automation and quality assurance. I have worked with UI, API and design testing, created test cases in Gherkin, analyzed them through Jenkins and interacted with development teams and product owners. I use tools like Jenkins, Jira, Confluence, Zephyr, IDEA, Postman, Mailtrap, Miro, Figma, GCloud, Swagger. I help find critical bugs before release to ensure the product is stable and safe for users. I have experience in fast and accurate data entry, which saves the team time and reduces the risk of errors. I also perform transcription and annotation, ensuring high-quality processing of information for clients. My work combines attention to detail with a practical understanding of business goals, so I can be useful in both testing and data or content management tasks.

🔍 About me: I am representing a new, ambitious, and open to new challenges generation of highly motivated, skilled young professionals with an active life attitude, as well as current results and confirmed achievements. I'm looking for new professional opportunities and ambitious, cutting-edge Cloud projects to leverage my experience, ability to learn fast in order to help achieve great business results for my customers. I have been working as a DevOps as well as a Cloud Infrastructure Engineer for 6 years. My current experience is based on deep engagement with cloud infrastructure and solution architecture development projects. The key elements of my engagement had been related to setting up of automated cloud-based infrastructure by: - using infrastructure as a code - containerization - scripting and configuring CI/CD processes. I really love developing reliable and systematic architectures that can be understood by anyone. 📙My knowledge is particularly strong in EKS, RDS, ElasticBeanstalk, Lambda and ECS services. However, I can also boast that I have a lot of experience with other services as well: Computing: EC2, ECS, EKS, ElasticBeanstalk, Lambda. Database: RDS, DynamoDB, Aurora, DMS (for migration), ElasticCache and Redis. Storages: S3, ECR. Analytics: CloudWatch, Kinesis, Databricks, ElasticSearch. Applications Services: SWF, SES, SQS, SMS, Cloud Search. Security: IAM, WAF, KMS, Directory Service. Routing: API Gateway, Direct Connect, CloudFront, VPN, Route53, Load Balancer. ⚙️ Tech stack: Infrastructure as Code: Terraform, Ansible, AWS Cloud Formation. Continuous Integration and Delivery (CI/CD): GitLab CI/CD, GitHub Actions, Bitbucket Pipelines, Jenkins, CircleCI. Containerization: Docker, Docker-compose, Kubernetes. Operating Systems: Debian & RedHat. Databases: MySQL, Postgres, MongoDB. Monitoring: Grafana, Prometheus, ELK, Datadog. Scripting: Python and BASH. ❓Why me: If you need a specialist who fulfils their commitments at all costs. If you are looking for someone who can develop an architecture for your needs with any ratio of price and functionality, as well as train to work with it with clear documentation. Then contact me. Let's build a future together.