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~340 giây
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52+
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10k+
freelancer trực tuyến
Không tốn chi phí trả trước · chỉ thanh toán khi bạn hài lòng với công việc

8,5
8,5
100%

MALAPPURAM, India
$50 USD một giờ
Hi, I’m a DevSecOps & Cloud Infrastructure Engineer with over 12 years of experience in Cloud Architecture, Web Hosting, Server Security, and Malware Remediation. I specialize in building secure, scalable, and automated infrastructures across leading cloud and hosting environments. Core Expertise Operating Systems Debian, Ubuntu, CentOS, Red Hat, Fedora, AlmaLinux Cloud Platforms AWS, Google Cloud, Azure, Alibaba Cloud, IBM Cloud, OVH, Linode, DigitalOcean, Vultr, Scaleway Containerization & Orchestration Docker, Kubernetes, Helm, Docker Compose Infrastructure as Code (IaC) & Automation Terraform, Ansible, CloudFormation, CI/CD Pipelines (GitHub Actions, GitLab CI, Jenkins),N8N Web Servers Apache, Nginx, LiteSpeed, IIS Databases MySQL, MariaDB, PostgreSQL, Amazon Aurora Mail Systems Zimbra, Postfix, Dovecot, iRedMail, Sendmail ERP / CRM Odoo, vTiger, Dolibarr, SugarCRM, SuiteCRM, YetiForce, ERPNext E-Learning & Video Conferencing BigBlueButton, Greenlight, Jitsi Meet, Moodle LMS, Chamilo LMS, Open edX, Scalelite Control Panels cPanel/WHM, DirectAdmin, ISPConfig, Webmin/Virtualmin, CWP, Plesk, VestaCP, HestiaCP CMS & E-Commerce WordPress, Joomla, Drupal, Magento, OpenCart, PrestaShop PHP Frameworks Laravel, CodeIgniter, Zend Security & Compliance OWASP Top 10, Burp Suite, PCI DSS, Server Hardening, WAF Integration, Cloud Security Best Practices I bring a security-first DevOps mindset, ensuring every deployment is automated, scalable, and compliant. From designing Kubernetes clusters and managing CI/CD pipelines to hardening cloud workloads and optimizing performance, I help businesses achieve stability, security, and operational excellence in the cloud. Thanks,

9,7
9,7
96%

Karachi, Pakistan
$40 USD một giờ
At HashOne Creatives, we engineer advanced AI systems, scalable web platforms, and high-performance mobile applications that help international businesses automate, scale, and maximize ROI. Operating with a global footprint of 200+ technology experts across the US, UAE, and Pakistan, we seamlessly bridge the gap between complex technical execution and regional business standards. Whether you are a US-based startup looking to disrupt the market or an established enterprise in the Gulf looking to modernize, our team delivers secure, elite-grade infrastructure tailored to your strict compliance and data security needs. ✅ Elite AI Capabilities ✔️ Generative AI & Media: Text-to-image/video generation, custom digital avatars, and advanced voice cloning/dubbing for multilingual media production. ✔️ Enterprise Conversational AI: Omnichannel smart assistants (WhatsApp, SMS, Email, Voice) featuring automated lead-calling, real-time appointment booking, and intelligent knowledge-base integration. ✔️ Automated KYC & Security: Secure identity verification tools utilizing automated OCR, biometric checks, liveness detection, and facial recognition. ✔️ Industry-Specific AI: Smart natural-language recruitment search engines, automated sports commentary video editors, and real-time AI-powered educational tutors. ✅ Full-Scale Web & Mobile Engineering ✔️ Advanced Web Ecosystems: High-speed, secure web apps using React.js, Next.js, Node.js, Laravel, and Django. ✔️ Native & Cross-Platform Mobile: Exceptional mobile apps built natively for iOS/Android or via Flutter and React Native. ✔️ Cloud & Infrastructure: Expert deployment and optimization on AWS, Azure, and Google Cloud, alongside custom 3rd-party API integrations. ✔️ Business Automation: Bespoke, scalable CRM, ERP, and internal workflow systems designed for operational efficiency. ✅ Why International Enterprises Choose Us ✔️ 24/7 Global Availability: With teams spanning multiple time zones, we offer synchronized communication for clients across North America, Europe, Australia, and the Middle East. ✔️ Rigorous Project Standards: Agile development methodologies, transparent progress tracking, and robust quality assurance protocols. ✔️ Enterprise Security First: We build solutions prioritizing data privacy, high availability, and secure cloud architectures. ✔️ Long-Term Partnership: Post-deployment support, routine maintenance, and dedicated product scaling to grow alongside your business. Let’s turn your vision into technology that creates measurable business value. Click "Invite to Bid" or contact us today to discuss your project requirements.

8,0
8,0
96%

Dhaka, Bangladesh
$40 USD một giờ
|==> Jack of all trade!! <==| Areas Of Expertise: IT Security Audit - ISO 27001:2022, PCI DSS, NIST 800-53, GDPR and several other IT Security Compliance. IT Security and VAPT - Backtrack, Kali Linux, Nmap, Wireshark, Metasploit, Nikto, Burp Suite, OpenVAS, Aircrack-ng, and several other security penetration tools System Administration - VMWare vSphere, vCenter, ESXi (5.x, 6.x, 7.x, 8.x) Redhat Linux Enterprise Linux (5.5, 6, 6.5, 7, 8), CentOS, Ubuntu, Kali/Backtrack,. Windows Server (2019, 2016, 2012), Windows Hypervisor, SCVMM (System Center Virtual Machine Manager), SCCM (system center configuration manager), SCOM (System Center Operations Manager), VMware Networking - Routing, Switching, Cisco Firewalls, router and switches, Packet tracer, Riverbed Opnet Modeler, GNS3 IT Security - Backtrack, Kali Linux, Nmap, Wireshark, Metasploit, Nikto, Burp Suite, OpenVAS, Aircrack-ng, and several other security penetration tools Digital Forensics - Autopsy, EnCase, FTK, Axiom Web Designing - html, css, javascript, xml Web Programming - php, asp, ajax, jsp Database - MySQL, Oracle Writing - Technical Writing, Technical documentation, E-book, Content, Report, Creative writing

7,5
7,5
97%

Dhaka, Bangladesh
$120 USD một giờ
If your web application, API, or AI system has vulnerabilities, attackers will find them. My job is to find them first. I'm Md Shofiur, a Certified Ethical Hacker (CEH) and senior penetration tester with 8+ years securing applications and infrastructure across fintech, healthcare, e-commerce, and SaaS. I've completed 87 projects on Freelancer with a 4.9 rating, a 97% on-budget record, and a 94% acceptance rate. I'm a member of the Preferred Freelancer Program and fully verified across payment, phone, email, and identity. 🎯 What I test Web applications using OWASP Top 10 methodology. REST and GraphQL APIs, covering authentication flaws, injection, IDOR, and rate limiting issues. AI-powered applications and LLM systems tested against the full OWASP LLM Top 10. WordPress, Laravel, and custom CMS platforms. Network and VPS infrastructure. PCI DSS, HIPAA, and ISO 27001 compliance environments. 🔍 What makes my work different I don't run a scanner and call it a pentest. Every engagement starts with manual reconnaissance, follows a structured methodology, and ends with a report your developers can actually act on. Each finding includes a risk rating, business impact, step-by-step proof of concept, and specific remediation guidance, not just a list of CVEs. 🤖 AI security testing I'm one of the few penetration testers on Freelancer offering dedicated security assessments for AI systems. If your company runs an LLM-powered chatbot, AI agent, or RAG system, I test it against the OWASP LLM Top 10, covering prompt injection, data extraction, insecure output handling, and excessive agency. ✅ Compliance experience PCI DSS v4.0 external and internal penetration testing. HIPAA security rule technical safeguard assessments. ISO/IEC 27001 security control validation. SOC 2 readiness penetration testing support. 🏆 Certifications Certified Ethical Hacker (CEH), API Penetration Testing, API Security for PCI Compliance, ISO/IEC 27001 Information Security Associate, Certified in Cybersecurity. 📋 What you get from every engagement An executive summary for management, a technical findings section with full proof of concept for each vulnerability, risk ratings using industry-standard scoring, and a prioritized remediation roadmap your team can follow immediately. ⚡ Response time I respond within 4 hours and offer a free 15-minute discovery call before any engagement starts. Send me your project details and I'll tell you exactly what I'd find and how I'd approach it

4,9
4,9
98%

jaipur, India
$8 USD một giờ
Hi, I'm Ashish Kumawat, a Software Engineer with 5 years of experience in web and e-commerce development. I specialize in creating innovative, efficient, and scalable digital solutions to enhance your online presence. Skills & Expertise: Web Development: HTML, CSS, JavaScript, React, Angular, Vue.js E-commerce Solutions: Shopify, WooCommerce, WordPress, Magento Backend Development: Node.js, Python, PHP, Ruby on Rails Database Management: MySQL, PostgreSQL, MongoDB SEO & Performance Optimization Version Control: Git, GitHub Services Offered: Custom Website Development E-commerce Website Development Shopify Store Setup and Customization Responsive Web Design API Integration Website Maintenance SEO Optimization Why Choose Me? Client-Centric: Understanding your business goals and tailoring solutions to meet them. Quality & Efficiency: High-quality work delivered on time. Clear Communication: Regular updates and transparent communication. Long-term Partnership: Ongoing maintenance and support available. Ready to elevate your digital presence? Let's connect!

5,0
5,0
100%

Ahmedabad, India
$20 USD một giờ
Description: 👨💻 IT Professional with 15+ Years of Expertise in Systems Administration, Cloud, and Security I am a seasoned Windows & Linux Administrator with extensive experience in managing servers, cloud platforms, and secure IT infrastructures. Over the past 14 years, I’ve successfully delivered projects involving virtualization, security hardening, and enterprise-grade system deployments. My focus is on creating secure, optimized, and scalable environments tailored to business needs. 🌐 Systems Administration 🛠️ Skilled in Windows Server (2022/2019/2016) and Linux administration. 📂 Experienced in Active Directory, NPS, NAS, DFS file sharing, and printer management. 🔧 Strong background in Dell server hardware, storage setup, and maintenance. 🔒 Security & Authentication 🛡️ Security assessments with Nessus and Qualys. 🔑 Implementation of certificate-based authentication and Radius servers. 🔒 Designed RDP with MFA solutions to secure remote access. 🚨 Hands-on experience with DNS/DNSSEC and Cloudflare for domain security. ☁️ Cloud & Virtualization 🌩️ Proficient in AWS, Azure, Google Cloud, and Office 365 administration. 💻 Expertise in Proxmox, VirtualBox, and Hyper-V clusters. 📦 Designed and deployed multi-VM Hyper-V clusters on Hetzner and OVH cloud, including 📡 Monitoring & Optimization 📊 Proficient in IPMonitor, PRTG, and Nagios Core for proactive system monitoring. 🖥️ Implemented alerting and dashboards to maximize uptime and performance. 🤝 Collaboration & Service Desk 📋 Experienced with Jira Service Desk for IT support management. 💬 Microsoft Teams administration for seamless organizational collaboration. 🔧 Troubleshooting Expertise 🛠️ Known for resolving complex IT issues quickly and effectively. 🔍 Strong skills in diagnosing root causes of outages and performance issues. Compliance : SOC 2, ISO 27001 and other 🌟 Recent Project Highlight: Hyper-V on Hetzner & OVH Cloud I recently completed a deployment of a Hyper-V cluster hosted across Hetzner and OVH cloud platforms. The project involved: 🔐 pfSense firewall for network segmentation. 🏢 Windows Domain Controller setup with Active Directory. 🌍 Hosting web servers for client-facing apps. 📂 DFS file sharing with replication. 💾 Veeam backup and disaster recovery plan. 🔑 RDP with MFA to secure remote access. This end-to-end solution delivered security, redundancy, and scalability, ensuring high availability for business-critical services. 💡 Why Work With Me? I deliver IT solutions that are: 🔒 Secure – with MFA, firewalls, and proactive vulnerability management. 🚀 Scalable – built on modern cloud and virtualization technologies. 📈 Reliable – with backups, monitoring, and performance tuning in place. Whether you need system administration, virtualization, cloud setup, or IT security hardening, I provide enterprise-grade solutions with a proven track record of success. 🚀 Let’s build a secure and resilient IT environment for your business.

4,6
4,6
88%

Brahmapur, India
$20 USD một giờ
I’m a Full-Stack Developer with 8+ years of experience building scalable web and mobile applications for startups, enterprises, and government projects. I specialize in turning complex business requirements into high-performance digital products — from MVPs to enterprise-grade platforms. Over the years, I’ve delivered 50+ web platforms and 20+ mobile applications across industries like healthcare, fintech, logistics, education, and enterprise systems. 🔹 Core Expertise: • Full-stack development (React, Angular, Node.js, Next.js) • Mobile apps (React Native, Flutter) • SaaS & marketplace platforms • Real-time systems (WebSockets, analytics dashboards) • API architecture & scalable backend systems • Websites 🔹 Notable Work: • Built an enterprise ERP for automotive operations managing 500+ dealers • Developed healthcare systems with 10,000+ patient records and 90% faster reporting • Created real-time logistics and delivery platforms with live tracking • Delivered fintech and blockchain-based platforms with high scalability 🔹 Tech Stack: React, Angular, Node.js, MongoDB, PostgreSQL, Firebase, React Native, Flutter, AWS, Docker, CI/CD 🔹 Why work with me: ✔ Clean, scalable, production-ready code ✔ Strong system design & architecture thinking ✔ Experience across startups, enterprise & government projects ✔ Focus on performance, security, and long-term maintainability I don’t just build applications; I help build products that scale and deliver real business impact.
5,3
5,3
93%

Mohali, India
$15 USD một giờ
AWS & Azure Certified Cloud Architect, CISA Certified, and Senior DevOps Engineer with 16+ years of experience helping startups, SaaS companies, and enterprises design, migrate, secure, automate, and optimize cloud infrastructure across AWS and Azure. I specialize in AWS and Azure architecture, DevOps automation, cloud security, Infrastructure as Code (IaC), Kubernetes, CI/CD, and production infrastructure management. I help businesses build scalable, highly available, secure, and cost-efficient cloud environments, on either platform, or both while improving reliability and operational efficiency. How I Can Help You • AWS & Azure Cloud Architecture & Infrastructure Design • AWS & Azure Migration & Modernization • DevOps & CI/CD Pipeline Automation • Infrastructure as Code using Terraform, CloudFormation & ARM/Bicep • Kubernetes (EKS & AKS), ECS & Containerization • Cloud Security Hardening & DevSecOps Implementation • Linux Server Administration & Optimization • Cloud Cost Optimization (FinOps) — AWS and Azure • Monitoring, Logging & Incident Response • Disaster Recovery & High Availability Architecture • Security & Compliance Support (SOC 2, ISO 27001, PCI DSS, HIPAA, GDPR, NIST CSF, DPDPA) Technical Expertise • Cloud Platforms - Amazon Web Services (AWS) - Microsoft Azure - Google Cloud Platform (GCP) - DigitalOcean, Linode • DevOps & Automation - Terraform - AWS CloudFormation - Azure Resource Manager (ARM) / Bicep - Jenkins - GitHub Actions - GitLab CI/CD - AWS CodePipeline & Azure DevOps Pipelines - Argo CD - Ansible • Containers & Orchestration - Docker - Kubernetes - Amazon EKS - Azure Kubernetes Service (AKS) - Amazon ECS • Monitoring & Observability - AWS CloudWatch - Azure Monitor - Datadog - Prometheus - Grafana - PagerDuty - Nagios • Servers & Databases - Linux Administration - Nginx, Apache, Tomcat - MySQL, MariaDB, MongoDB - Azure SQL, RDS Aurora Why Clients Choose Me • 16+ years of cloud, DevOps, and infrastructure experience • AWS Certified Solutions Architect – Professional • Microsoft Certified: Azure Administrator Associate (AZ-104) • CISA Certified Security Professional • Strong expertise in secure and scalable multi-cloud architecture • Experience managing production environments and mission-critical workloads • Focus on automation, reliability, security, and cost efficiency • Clear communication and long-term partnership approach I help organizations move faster by building secure, automated, and reliable cloud environments — on AWS, Azure, or both that support business growth. Whether you need AWS or Azure migration, DevOps automation, Kubernetes/AKS deployment, cloud security improvement, infrastructure optimization, or ongoing cloud support, I can help you design and maintain a high-performing cloud platform. Let's build a secure, scalable, and future-ready cloud infrastructure for your business.

5,1
5,1
93%

Salvador, Brazil
$38 USD một giờ
I’m a results-driven full-stack developer with strong expertise in modern front-end frameworks and backend technologies. I specialize in building elegant, scalable web applications using React, Next.js, Vue, Nuxt, and Tailwind CSS, while delivering robust server-side solutions with Laravel, NestJS, Django, FastAPI and Node.js. My experience includes creating interactive 3D experiences with Three.js and developing decentralized applications powered by Web3 and smart contracts. I enjoy translating complex requirements into clean, efficient code and intuitive user experiences. With a focus on performance, maintainability, and best practices, I help businesses launch high-impact digital products, from responsive websites to blockchain-based platforms, on time and at scale.
A PCI Compliance Consultant is a payment security specialist who helps businesses meet the Payment Card Industry Data Security Standard (PCI DSS) by assessing systems, closing gaps, and preparing audit-ready documentation. Hiring a freelance PCI compliance consultant gives merchants, processors, and service providers practical, hands-on expertise to protect cardholder data without the overhead of a full-time security hire.
PCI DSS compliance is mandatory for any organization that stores, processes, or transmits payment card data. A freelance PCI consultant translates the 12 core PCI DSS requirements into concrete actions for your environment, whether you are a small e-commerce store handling SAQ A self-assessments or an enterprise undergoing a full Report on Compliance (ROC). The commercial value is direct: avoiding card brand fines, reducing breach risk, qualifying for lower processor fees, and keeping merchant accounts in good standing.
Most engagements move through the same arc — scope the cardholder data environment (CDE), perform a gap analysis against PCI DSS v4.0, remediate findings, and produce the documentation needed for an attestation or assessor review. A skilled consultant works alongside your developers, infrastructure team, and finance leadership to make compliance a repeatable program rather than a one-time scramble.
Strong consultants are fluent in the technical stack that supports a defensible compliance program. Expect references to ASV scanning tools such as Qualys and Tenable Nessus, SIEM platforms like Splunk and the Elastic Stack, file integrity monitoring tools such as Tripwire, and vulnerability management workflows that feed into Jira or ServiceNow ticketing. On the application side, look for familiarity with OWASP ASVS, secure coding standards, and tokenization providers integrated with payment gateways like Stripe, Adyen, and Braintree.
Adjacent frameworks frequently come into play — ISO 27001, SOC 2, HIPAA, NIST CSF, and GDPR. A consultant who understands how PCI DSS overlaps with these standards can build a unified control set instead of duplicating work across audits.
The strongest PCI compliance experts combine recognized credentials with operational experience inside real cardholder data environments. Look for certifications such as QSA (Qualified Security Assessor), ISA (Internal Security Assessor), PCIP (PCI Professional), CISSP, CISA, or CISM. Bonus signals include experience working at or with a QSA company, prior ROC contributions, and familiarity with PCI DSS v4.0 transition timelines.
Ask for redacted samples of past gap analysis reports, scoping diagrams, or remediation roadmaps. Review their portfolio for the specific SAQ types or ROC complexity matching your environment. Confirm they understand your payment flow — hosted iframe checkouts demand very different controls than direct post integrations or stored card-on-file models.
Sample interview questions you can use directly:
Freelancer.com gives you direct access to a global pool of vetted security professionals — from independent QSAs and former assessors to cybersecurity engineers who specialize in payment environments. You can compare profiles, certifications, completed projects, and verified client reviews side by side before committing. Whether you need a one-time SAQ review, ongoing advisory, or a full remediation program, you can post a project on Freelancer.com and receive competitive bids within hours.
Clients on Freelancer.com set their own budgets, and the platform's Milestone Payments system protects funds until agreed deliverables are accepted. That structure works particularly well for compliance engagements, where deliverables — gap report, remediation plan, signed AOC — are clearly defined and milestone-friendly.
Ready to secure cardholder data and meet your acquirer's deadlines with confidence?
Hiring a PCI compliance consultant works best when you treat the project brief as a mini scoping document. The clearer you are about your payment flow, current compliance level, and target deliverable, the more accurate the bids you will receive. The process below walks through writing the brief, comparing proposals, and awarding the work with confidence.
Your project post is the single biggest determinant of bid quality — a precise brief filters for consultants whose payment-security experience genuinely matches your environment. Head to the
Bids are short proposals, not just price quotes. They reveal how each PCI consultant interprets your environment, what methodology they propose, and whether they have understood the scoping nuances of your payment flow. Read carefully and shortlist consultants whose approach demonstrates genuine fluency with PCI DSS v4.0.
Final selection combines proposal quality with profile evidence. For PCI work, consistency matters more than a single impressive engagement — you want a consultant whose track record shows repeatable, audit-ready output across many merchants. Weigh credentials, written reviews, and portfolio depth together.
A focused SAQ A or SAQ A-EP engagement for a small e-commerce merchant can wrap up in two to four weeks. A full PCI DSS v4.0 gap assessment, remediation, and ROC-readiness program for a service provider typically runs three to nine months depending on environment complexity and the state of existing controls.
A QSA is formally certified by the PCI Security Standards Council to perform assessments and sign Reports on Compliance for Level 1 merchants and service providers. A PCI compliance consultant may or may not hold QSA status — many consultants focus on advisory, gap analysis, remediation, and SAQ preparation, then hand the formal sign-off to a QSA firm if a ROC is required.
Even with a hosted gateway, you still hold compliance obligations — typically SAQ A or SAQ A-EP — covering your website integrity, vendor management, and policies. A consultant helps confirm the right SAQ, validate that your integration genuinely keeps card data out of scope, and prepare the documentation your acquirer will request.
Yes. Many clients hire freelancers on Freelancer.com for discrete deliverables such as a scoping exercise, an SAQ review, an incident response plan, or pre-audit readiness. Others convert short engagements into ongoing retainers for quarterly scan reviews and annual reattestation.
PCI DSS v4.0 introduces a customized approach to controls, expanded authentication and scripting requirements, more rigorous evidence expectations, and several future-dated requirements that became mandatory in 2025. A consultant familiar with v4.0 can map current v3.2.1 controls to the new standard and plan a phased adoption.

Freelancer Doanh Nghiệp
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