Hi, my name is Arsen. I’m a Senior C++ and Python developer with 5+ years of experience building software for Linux, Windows, and embedded systems. I focus on clean, efficient, and reliable solutions for low level, backend, and performance critical tasks. What I bring to projects: • C/C++ development: STL, Boost, Boost ASIO, Qt, WinAPI, OCCI, V8, POSIX, multithreading • Python development: automation tools, data pipelines, backend logic, Django • Database engineering: Oracle, SQLite, MongoDB, data export tools, batch processing, custom type conversion • Linux systems programming: networking utilities, driver level interaction, Linux kernel headers, OpenWRT, desktop and CLI tools • Wireless and low level networking: Generic Netlink, nl80211, libnl/libmnl, Wi Fi scanning tools, protocol and frame parsing • Reliability and performance: profiling, transactional workflows, data integrity focused design, Dockerized builds, CI/CD with TeamCity • Cross platform delivery: Linux and Windows applications, Make, CMake, Conan, Git/SVN, GDB, Valgrind, Doxygen, Bash I have built tools ranging from high performance Wi Fi scanners in C that interact directly with the Linux wireless stack, to cross platform C++ command line utilities that export Oracle data into SQLite with transactional safety and performance profiling. I am comfortable working close to the system, optimizing throughput, handling large datasets, and designing software that is maintainable and stable in production. Clients usually trust me with complex backend, systems, and infrastructure related tasks where performance, correctness, and long term reliability matter. If you are looking for a developer who can work on C++, Python, Linux internals, networking, or data heavy applications, let’s talk. 🙂

Senior Linux/DevOps Engineer & AI Automation Specialist Senior Linux/DevOps Engineer and AI Automation Specialist with 15+ years of experience designing, building, and scaling cloud-native infrastructure and intelligent workflow systems. My background combines deep cloud architecture expertise (AWS-focused) with hands-on experience building AI-powered automation using n8n, LLM APIs (OpenAI, OpenRouter), vector databases, and secure cloud environments. Most recently, I've led DevOps and cloud-security engineering for a U.S.-based healthcare SaaS platform (physician scheduling) operating under HIPAA and SOC 2. The work spans secure AWS operations, fleet patch management across mixed Windows/Linux estates, EKS lifecycle management, and building the security tooling and audit evidence that underpin a SOC 2 program — turning compliance requirements into reliable, automated, production-grade controls. Cloud & Infrastructure Expertise Over 12 years of AWS experience designing secure, scalable, production-grade environments across healthcare, banking, and enterprise sectors. AWS Services EC2, RDS, EKS, VPC, IAM, S3, CloudFront, Route53, Elastic Beanstalk, SQS, EFS, ElastiCache, Redshift Systems Manager (SSM), GuardDuty, Security Hub, AWS Config, Inspector, CloudTrail Infrastructure as Code Terraform & CloudFormation — multi-account secure environments ADR-driven design and Strangler Fig migration strategy Containers & Orchestration Kubernetes (EKS), Docker, ECS, Docker Swarm EKS cluster lifecycle management — Kubernetes version upgrades across dev/staging/prod CI/CD Jenkins, GitLab CI/CD, CircleCI, CodePipeline, ArgoCD GitHub Actions with ARC (Actions Runner Controller), Azure DevOps self-hosted agents GitOps & Kubernetes Configuration Management ArgoCD (declarative continuous delivery, app-of-apps pattern, multi-cluster sync), Kustomize (base/overlay structuring, environment promotion, patch management), Helm (chart authoring, versioning, values management across environments). GitOps workflows with full audit trail and rollback capabilities. Designed and operated production GitOps pipelines for EKS clusters in regulated environments. High Availability HAProxy, Nginx, Load Balancers, Heartbeat Led infrastructure teams in banking environments and designed highly available Kubernetes production systems for U.S.-based healthcare companies. Security, Compliance & Governance (SOC 2 / HIPAA) Hands-on implementation and continuous evidence for compliance programs in regulated healthcare environments. SOC 2 control implementation and evidence collection across multiple AWS accounts (logical access, audit logging, encryption, change management, patch management) HIPAA-aware architecture: least-privilege IAM, encryption at rest and in transit, end-to-end audit trails, and EDR coverage across the fleet AWS-native security stack: GuardDuty, Security Hub, AWS Config, Inspector, CloudTrail Prowler (soc2_aws framework) and Vanta (GRC) for continuous control mapping and posture monitoring AWS IAM Identity Center (SSO): MFA enforcement, permission sets, SAML federation, CC6.1 remediation EDR migration: CrowdStrike Falcon → Microsoft Defender, with continuity of endpoint protection enforced as a hard gate Immutable S3 evidence stores, fleet-wide backup-policy review, and EBS encryption rollout for compliance Multi-account delegated-administrator security posture (Security Hub / Config) Architecture Decision Records (ADRs) for traceable, auditable change governance Windows Server & Mixed-Fleet Operations Operated a ~70-instance EC2 fleet (Windows Server + Linux) plus ~35 EKS worker nodes AWS Systems Manager: Patch Manager (AWS-RunPatchBaseline), Session Manager, Fleet Manager, Run Command Established a formal monthly patch cadence; raised Windows patch compliance from a low baseline to ~84% Windows Server lifecycle / EOL planning: Server 2016 → 2022 upgrade and decommission roadmaps aligned to patch-management policy KB-level risk triage (e.g., hostname-length reboot risks on domain members) with documented remediation Active Directory domain controllers and SQL Server hosts (HA production pairs, RDS member servers, performance tuning) Safe-patch workflow with pre-patch EBS snapshots and post-reboot service validation Observability & Monitoring Datadog, New Relic, Zabbix — agent consolidation and cost optimization across EKS and production hosts Networking & Secure Access Tailscale (subnet routers, zero-trust access), VPC design, Route53, Load Balancers AI Automation & Workflow Engineering Beyond infrastructure, I specialize in AI-powered workflow automation: n8n workflow design (cloud & self-hosted) LLM integration (OpenAI, OpenRouter, local models) RAG architectures (Qdrant, vector search, embeddings) AI-driven CRM automation Intelligent document processing Automated client intake & communication systems Secure AI pipelines for regulated industries I design workflows that are secure, easy to maintain, scalable

Hi there! I'm a seasoned DevOps Engineer with over 5 years of hands-on DevOps experience and 10+ years in Linux/Unix system administration. I specialize in automating infrastructure, streamlining deployment pipelines, and optimizing cloud environments for performance, scalability, and security. What I Bring to the Table: * Cloud Platforms: AWS, Google Cloud Platform (GCP), DigitalOcean, Azure Containerization & Orchestration: Docker, Docker Compose Infrastructure as Code: Terraform, Ansible CI/CD Pipelines: Jenkins, Git-based workflows Scripting & Automation: Bash scripting for automation and system tasks System Administration: Installation, configuration, hardening, and troubleshooting of Linux/Unix systems Whether you're a startup building cloud-native systems or an enterprise migrating legacy infrastructure, I’m here to deliver reliable, efficient, and secure solutions. * Clear communication * On-time delivery * Long-term collaboration mindset

I am a python backend developer, devops engineer (3+ years). Experience and skills: ● 2 years of experience in developing Rest Api using flask and django. ● Employed Full-time as python developer ● Having experience python, flask, django, pytest, sql, postgresql, mariadb, Git, Docker. ● Docker-swarm, kubernetes, Linux ● Working on with various CICD pipelines using both Git and Jenkins. ● Hands on experience on various projects using aws services: ec2, vpc, ecs, elb..

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.

I.T. and Network Support, management, and repair. I have a little over ten years of experience in this field in a variety of different environments with a background in customer service. I utilize industry standard practices to get the job done securely and correctly the first time while being able to articulate client needs well enough to translate them into manageable and scalable solutions. Security and Functionality is the focus! Work with me to achieve the goals you have laid out for your organization and it's technical infrastructure!

👨‍💻Professional DevOps Engineer & SRE Engineer for 5+ Years with Servers, Databases, Networks, and Cloud experience! 👨‍💻Red Hat Certified System Administrator (RHEL 9) - Working more than 3000 Hours 💻 With the following qualifications:- ● ⚙️ System and software configuration, installation, deployment, optimization, troubleshooting, and automation. ● 🐧 Linux kernel management. ● OS 💿: Ubuntu, Debian, CentOS, Rocky Linux, Alma Linux, Red Hat Enterprise Linux (RHEL), Arch Linux, Manjaro, Proxmox. ● Web and Proxy services 🌐: Apache, Nginx 🄽, Varnish, HAProxy. ● Databases and Datastores 💽: MySQL🐬, MariaDB, PostgreSQL🐘, Redis, Memcached ● Self-hosted apps and Control panels: Control Webpanel (CWP), cPanel, Plesk, Webmin, Cockpit, Nextcloud, Confluence, Jira, WordPress, Git, Gitea. ● DNS: Cloudflare, PiHole, Bind, AWS Route53, experience with SPF, DMARC, DKIM, and PTR records for Email services. ● EMail ✉️: Mailu, iRedmail, Mailman, Postfix, Dovecot. ● Automation with Bash, Python, Web scraping, and Ansible ● Virtualization, Containers, and Cloud☁️:: Docker🐋, Kubernetes, K3s, QEMU/KVM, LXC, Proxmox VE, VMware ESXi, Hashicorp Terraform. ● Cloud Providers ☁️: Microsoft Azure, AWS, GCP, DigitalOcean, and Vultr. ● Object Storage 💾: AWS S3 and Wasabi ● Secrets & Certificates 🔏: SSL Self-signed Certificate and Certificate Authority, Let's Encrypt ( ACME.sh, Certbot, others), SSH PKI, Vault. ● Networking 🕸: TCP, HTTP, HTTPS, SSH, FTP, SFTP, SMTP, IMAP, POP3, FTPS, DNS, TLS, WebSockets, Tor onion routing, ngrok, ebtables, iptables, firewalld, iproute2, NetworkManager, netplan. ● VPN 🔏: OpenVPN, Wireguard, Tinc VPN, Outline VPN, OpenConnect, Anyconnect. ● Web scraping 🌐🕷️: Python requests, scrapy, beautiful soup, selenium. ● Development with Python 🐍, Bash scripting, Flask, SQL, HTML, JQuery, and JSON. ● Packaging 📦: Rpm, Deb, and Pacman.

Hey, I'm Serge — a DevOps engineer and Linux sysadmin with 16 years of hands-on experience. Top Rated Plus on Upwork, $70K+ earned, 100% Job Success Score across 24 contracts. My day-to-day involves leading DevOps work for US and Israeli companies — finance, government, tech. Through my employer, the rate is around $100–120/hr — that includes company overhead, account managers, and the usual agency markup. Here on Upwork you hire me directly. No middlemen, no account managers. That's why the rate is lower — not because the work is different. What I focus on most: **Kubernetes and container infrastructure** I've set up and migrated dozens of projects to Kubernetes — EKS, GKE, AKS, and on-prem. I handle the full stack: Helm-based deployments, Grafana + Loki for monitoring and logging, Terraform for infra as code. If your app is still running on Docker Compose and you're hitting limits, this is exactly what I do. **CI/CD pipelines** Setting up proper pipelines from scratch — GitLab CI, GitHub Actions, Helm. Dev/stage/prod environments with proper Git flow so your developers aren't blocking each other. **Cloud infrastructure — AWS, GCP, Azure** Terraform for everything that can be described as code. Multi-environment setups, VPC, networking, RDS, S3, load balancers, security groups. Migrations between accounts, between clouds, and from on-prem to cloud. **AI infrastructure** More recently I've been setting up GPU-based AI infrastructure — Ollama, vLLM, LiteLLM proxy. If you're deploying local LLMs or building AI-powered apps and need the infra side sorted, that's something I can help with too. **A few practical things:** - Up to 8 hours/day — I work focused, not just "clocked in" - You work directly with me throughout the project - I write documentation so your team can actually use what I build If you have a project in mind and want to talk through the scope first, I'm happy to do a short call. Just send a message. Serge ---

Struggling with failing automation scripts or blocked web scrapers? Are complex CAPTCHAs, Cloudflare, or Akamai stopping you from accessing critical data? I am a specialized engineer who builds intelligent, resilient solutions to solve these exact challenges. My expertise isn't just writing scripts; it's in deep reverse engineering. I analyze the entire security posture of a target—from the client-side JavaScript and network requests down to the API and WAF rules—to build automation that mimics human behavior and remains undetected. My Core Services: Anti-Bot & CAPTCHA Bypass Solutions: I specialize in the reverse-engineering of obfuscated JavaScript to understand and defeat browser fingerprinting techniques. My skills include solving all major CAPTCHAs and developing solutions to bypass sophisticated WAFs and bot-detection systems like Cloudflare, Akamai, and PerimeterX. Intelligent Web Automation & Data Extraction: I build robust, production-grade web scrapers and automation tools in Python and Node.js. This includes creating custom Chrome Extensions for complex browser workflows and architecting data pipelines that can handle millions of requests reliably. Full-Stack Development for Automation Tools: As a full-stack engineer (Next.js, TypeScript, PostgreSQL), I don't just provide scripts; I can build complete, user-friendly applications and dashboards around your automation needs. I have direct experience in developing MVPs for data-centric platforms, such as the ticket-tracking system I built for a resale client. Why Choose Me?? Innovative Problem-Solver: I don't just write code; I invent solutions. My work on a 'rug-pull' meme coin detector and a patented ERP system demonstrates my ability to tackle unique challenges. Proven Security Mindset: With a global top-220 rank on HackTheBox and experience as a Cyber Security Tech Lead, I approach every project with security as a top priority. Reliability & Professionalism: I focus on delivering clean, maintainable code and clear communication to ensure your project's success. If you're tired of temporary fixes and need a permanent, robust solution to your automation or data access challenges, I'm the specialist you're looking for. Click the "Invite to Job" button and let's schedule a call to discuss your project.

📜Hello! I'm Muhammad Waleed, an experienced DevSecOps Engineer with over 3 years of expertise in orchestrating cloud-native solutions, automating infrastructures, and implementing robust security measures. My skill set includes advanced proficiency in Kubernetes and Docker, allowing me to streamline DevOps practices effectively. I am certified in AWS, Azure, and Google Cloud Platform (GCP) services and have a solid foundation in Terraform for infrastructure automation. My Core Expertise Includes: ✅ Cloud Platforms: AWS, Azure, GCP ✅ Containerization & Orchestration: Kubernetes (EKS, AKS, GKE), Docker, Tanzu ✅ Infrastructure as Code: Terraform ✅ Virtualization: vSphere, ESXi ✅ DevOps Tools: Azure DevOps, GitLab, Jenkins, GitHub Actions, CodeFresh, NewRelic, TeamCity CI, Octopus Deploy, ArgoCD, Prometheus, Grafana ✅ Security & Compliance: Penetration Testing, Security Architecture Design and Implementation, CSA Star Level 1 Compliance, PAM ✅ Access Management: Teleport Key Projects & Experience: ✔️ Spearheaded the deployment of an enterprise cloud environment for a financial institution on AWS using Terraform. ✔️ Led the complete setup of an enterprise environment on AWS using Terraform. ✔️ Deployed a highly available HashiCorp Vault with a highly available Consul backend. ✔️ Designed and implemented DevSecOps pipelines with SAST using Checkmarx and DAST using ZAP/Burp. ✔️ Implemented Prometheus for environment monitoring and Teleport for secure access management as part of security enhancements in a large VMWare environment ✔️ Helped migrate applications to Kubernetes, ensuring seamless transitions and minimal downtime. ✔️ Implemented GitOps practices using ArgoCD, or continuous delivery and GitOps workflows enhancing deployment efficiency and reliability. ✔️ Conducted EVE-ng deployment on GCP for PoC testing for a client. ✔️ Successfully integrated ZAP into Azure DevOps pipelines, enhancing security in CI/CD processes. ✔️ Assisted Kayuga Solution in achieving CSA Star Level 1 Compliance. ✔️ Developed an Advanced Penetration Testing Lab on Azure using Terraform, focusing on security and compliance automation. Professional Experience: 💼 Sr. Cybersecurity Consultant, Innovorbs Technologies LLC (Contracted to an Australian SMS Provider) (June 2024 – Present) 💼 Software Engineer (DevSecOps), Strategic Systems International (Jul 2023 – Present) 💼 Cybersecurity and Technology Consultant, Kayuga Solution (Dec 2022 – Present) 💼 Cyber Security Instructor, National Cyber Security Auditing and Evaluation Lab (NCSAEL) (Feb 2023 – Jun 2023) 💼 Cloud Compliance Expert, Kayuga Solution (Oct 2022 – Jan 2023) 💼 Red Team Lead (Advanced Intern), Virtually Testing Foundation (Jul 2022 – Nov 2022) Certifications:: 🥇 Microsoft Certified: Cybersecurity Architect Expert 🥇 Microsoft Certified: Azure Security Engineer Associate 🥇 Google Certified: Professional Cloud Architect 🥇 Google Certified: Professional Cloud Security Engineer 🥇 Microsoft Certified: Azure Fundamentals Education: Bachelor of Science in Software Engineering, National University of Sciences and Technology (NUST) (June 2023) - CGPA: 3.86/4 I am dedicated to leveraging my comprehensive skill set to deliver secure, scalable, and high-quality DevOps solutions tailored to your organizational needs. Let's collaborate to transform your cloud infrastructure and DevOps practices. Feel free to reach out for a consultation, and let's discuss how we can make tech magic together!