Is your digital infrastructure secure against today's sophisticated threats?
I specialize in identifying and mitigating security vulnerabilities before they can be exploited. With a focus on real-world penetration testing and comprehensive malware cleanup, I ensure your systems are robust and resilient.
🛠️ Services I Provide:
Web & API Penetration Testing: Combining manual and automated techniques to uncover vulnerabilities.
WordPress Security & Malware Removal: Protecting your site from threats and ensuring smooth operation.
Network & Server Vulnerability Scanning: Utilizing tools like OpenVAS and Wireshark for thorough assessments.
Compliance-Oriented Security Assessments: Ensuring adherence to standards such as PCI-DSS and ISO 27001.
Email Setup & Security Hardening: Securing communications with platforms like Gmail, Hostinger, and SendGrid.
📈 Highlights:
4+ Years Experience | CEH Certified
20+ Projects Delivered with 5-Star Ratings
Expertise in OWASP Top 10, CVSS, and MITRE ATT&CK
Post-audit Guidance and Remediation Support
100% Confidentiality | NDA-Friendly
I am committed to delivering high-quality security solutions tailored to your needs. Let's work together to fortify your digital presence.
Information Security
Security Assessment & Testing
Penetration Testing
Malware Removal
Ethical Hacking
Compliance
Web App Penetration Testing
Cloud Security
WordPress Security
Cloudflare
DNS
Google Workspace
Firewall
Technical Support
Linux System Administration
Windows Administration
Email Deliverability
Kunal N.
Pune, India
$20/hr
5.0
4 jobs
I help SaaS companies, and enterprises identify critical security vulnerabilities before they become costly breaches, compliance issues, or business disruptions.
As an Application Security Consultant and Penetration Tester, I specialize in uncovering real-world security weaknesses across web applications, APIs, network infrastructure, cloud environments, and modern technology platforms. My goal is not only to identify vulnerabilities but also to help organizations understand their security risks, prioritize remediation efforts, and strengthen their overall security posture.
I have worked on security assessments involving enterprise applications, banking platforms, healthcare systems, cloud infrastructures, and business-critical applications. My experience includes identifying authentication flaws, access control weaknesses, business logic vulnerabilities, network misconfigurations, cloud security gaps, API security issues, and attack paths that automated scanners frequently miss.
Core Security Services
• Web Application Penetration Testing (OWASP Top 10 & Business Logic Testing)
• API Security Testing (REST & GraphQL)
• Network & Infrastructure Security Testing
• Cloud Security Assessments (AWS)
• Red Team Operations & Adversary Simulation
• AI / LLM Security Testing
• Vulnerability Assessment & Risk Analysis
• Security Architecture Review
• Email Security Implementation (SPF, DKIM & DMARC)
What You Can Expect
• Comprehensive Manual Security Testing
• Detailed Vulnerability Reports
• Proof-of-Concept Validation
• Risk-Based Prioritization
• Clear Remediation Guidance
• Remediation Validation & Retesting
• Executive and Technical Reporting
Tools & Technologies
• Burp Suite Professional
• Nmap
• Metasploit Framework
• Nessus
• OWASP ZAP
• Wireshark
• SQLMap
• AWS Security Tools
• Kali Linux
Long-Term Security Partnership
Many organizations engage me beyond a single penetration test. I work with clients on recurring security assessments, monthly security reviews, remediation verification, secure development guidance, and continuous security improvement initiatives.
Whether you need a one-time security assessment or a long-term security partner, I focus on delivering actionable security insights that help protect your applications, infrastructure, customers, and reputation.
If you are looking for a security professional who can think like an attacker and provide practical, business-focused security recommendations, I would be happy to discuss your project.
Penetration Testing
Web Application Security
Vulnerability Assessment
Ethical Hacking
OWASP
API Testing
Network Penetration Testing
Metasploit
Cloud Security
Cybersecurity Tool
Security Testing
Network Security
Application Security
Red Team Assessment
Information Security
Sandeep S.
Delhi, India
$15/hr
5.0
165 jobs
Web Penetration Testing(OWASP Top 10 methodology) | Network Penetration testing | OWASP API Security | Mobile Vulnerability Assessment(iOS and Android) | Source Code Reviews(.Net, Java, PHP) | Vulnerability Assessment and Penetration Testing | SIEM team (Cloud(AWS and Azure) Security, File Integrity Monitoring and Event Monitoring, Endpoint Security and Encryption, Data Loss Prevention, Network Access Control, Threat Monitoring (Email Traffic and Malware Analysis), Privileged Access and Identity Management)
Have 7+ years of experience in both black box and white box testing penetration testing. Perform VAPT (Vulnerability Assessment and Penetration Testing) services for web applications, networks, mobile; source code reviews; malware analysis; server hardening; and security analysis etc. Conduct penetration testing in a systematic approach. Follow the standard methodology of the industry like OWASP Testing Guide v4(OTGv4); SANS top 25; NIST SP 800-115; PCI DSS to perform penetration testing so that client can concentrate on their professions without worrying about security threats.
Web Application Testing: Do web application penetration testing with the latest methodology like OWASP Top-10, SANS Top-25. Perform both manual and automated penetration testing for vulnerabilities like Injection flaws(such as SQL, NoSQL, OS, and LDAP injection etc),Broken Authentication, Sensitive Data Exposure,XML External Entities (XXE), Broken Access Control,Security Misconfiguration, Cross-site scripting(XSS), Insecure Deserialization, Using Components with Known Vulnerabilities,Insufficient Logging & Monitoring. Also, perform source code reviews for many technologies like Java, NET, PHP etc.
Approach for Manual Web-Application Penetration Testing: Conduct manual testing with following controls:
* Configuration and Deployment Management Testing
* Identity Management Testing
* Authentication Testing
* Authorization Testing
* Session Management Testing
* Input Validation Testing
* Testing for Error Handling
* Testing for weak Cryptography
* Business Logic Testing
* Client Side Testing
Tools that use for Automated Web Penetration Testing: Acunetix, Burp-Suite, Netsparker, Nexpose, Nikto, IBM AppScan, HP fortify, W3af etc.
Network penetration testing: Provide both external and internal network Penetration Testing so that your Network Infrastructure is secured from the real world attacks. Do both manual and automated network penetration testing.
Approach for Manual Network Penetration Testing: Manually check for IDS/IPS, Server, Networks switch, Network Router, VPN, Firewalls, Anti-virus, Password etc.
Tools that use for automated network penetration testing: OpenVas, Wireshark, Nessus, Metasploit, Armitage, Scapy etc.
Mobile Application Penetration Testing: Perform mobile applications application penetration testing with the latest OWASP methodology(MSTG). Performed both manual and automated penetration testing for vulnerabilities like Weak Server Side Controls, Insecure Data Storage, Insufficient Transport Layer Protection, Unintended Data Leakage, Poor Authorization and Authentication, Broken Cryptography, Client Side Injection, Security Decisions Via Untrusted Inputs, Improper Session Handling, Lack of Binary Protections.
Tools: Burp-Suite, HP fortify, Dex2Jar, Apktool, framework-res.apk, iNalyzer.
Source Code Reviews: Perform source code reviews for both front and back-end languages. Perform source code reviews standard methodology like OWASP top 10. Do manual and automated source code reviews for various web based security vulnerabilities like SQL injection, Cross site scripting (XSS), CSRF, RFI,LFI, Authentication bypass etc.
Tools: CheckMarx, IBM Appscan source for analysis, Microfocus HP Fortify.
Security Analysis and Server Hardening: Regularly check and maintain your systems, servers to ensure that they comply with the standards. Do hardening application checks the item automatically on a daily basis and monitors all critical networks and server components. We support various frameworks like CIS benchmarking for Desktops & Web Browsers, Mobile Devices, Network Devices, Servers – Operating Systems, Virtualization Platforms & Cloud etc.
Social Engineering: Have experience in social engineering vectors: Vishing, Phishing, Smishing, Impersonation. Used the following social engineering cycle to conduct social engineering:
Gather Information: Here Information gathered from company websites, social media and other publications.
Plan Attack: Next step is outline how intends to execute the attack
Acquire Tools: After planning, next include computer programs that an attacker will use when launching the attack.
Attack: Exploit the weaknesses in the target system.
Use acquired knowledge: Information gathered during the social engineering tactics is used in attacks such as password guessing.
Tools: SET(Kali-Linux); GetGoPhish
Network Security
Vulnerability Assessment
Penetration Testing
Information Security
Internet Security
Security Analysis
Software QA
Network Penetration Testing
Website Security
Web Application Security
Information Security Audit
Web Testing
Divyeshkumar G.
Ahmedabad, India
$25/hr
4.7
336 jobs
I’m a Top Rated Plus .NET Back-End Developer with 14+ years of experience and over $1M in Upwork earnings, specializing in robust, scalable, and high-performance systems built on the Microsoft stack.
I’ve delivered enterprise-grade solutions to clients across many countries, helping businesses in e-commerce, SaaS, healthcare, and logistics transform their backends into powerful, efficient engines that drive growth and reliability.
My focus is always on your business outcomes in clean code, maintainable architecture, and consistent delivery that enhances performance and ROI.
1. Advanced .NET Technologies: Expert in C#, .NET Core (including .NET 6/7/8), ASP.NET MVC, and Web API for building secure, scalable RESTful APIs and microservices architectures. I ensure your applications are fast, maintainable, and ready for future expansion.
2. Cloud & DevOps Expertise: Architect and deploy cloud-native solutions using Microsoft Azure (App Services, Functions, Azure SQL, Key Vault) and AWS. I design CI/CD pipelines, use Docker containers, and implement microservices and serverless functions to achieve agility and scalability.
3. Database & Performance Optimization: Experienced in SQL Server and Entity Framework, I design efficient schemas, write optimized queries, and use caching and indexing strategies to maximize speed and responsiveness. My focus: applications that run smoother and scale effortlessly.
4. Business-Focused Results: I deliver automation, cost efficiency, and measurable performance gains. For instance, I’ve helped eCommerce clients cut API response times by over 60% and enterprises scale their systems without increasing infrastructure costs through smarter architecture and optimized code.
5. Reliable Communication & Delivery: Native-level English fluency ensures clear communication across time zones. I provide transparent progress updates, honor deadlines, and approach every engagement, whether a sprint or a long-term collaboration, with reliability and professionalism.
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GoHighLevel Certified Expert Troubleshooting & Automation Specialist
100% ready to TAKE ACTION on all YOUR Go High Level needs | Let’s Connect Now!
I love working on challenging GoHighLevel Projects, micro & macros, and looking forward to a video/phone call to assess your needs whenever you need me, seven days a week, 4 hrs a day!
Helping businesses scale to their highest level. The true power of GoHighLevel is your business growth.
Helping businesses achieve success like you deserve their max potential by leveraging GoHighLevel marketing & automation.
QA & Testing Expertise Includes:
- Manual Testing (Functional, Regression, Smoke, Sanity, UAT)
- Automation Testing using Selenium, Cypress, and Playwright
- API Testing (Postman, Swagger, REST Assured)
- Performance & Load Testing with JMeter
- Test Case Design, Test Execution & Defect Reporting
- End-to-End QA Process Setup and CI/CD Integration
- Cross-Browser & Cross-Platform Testing for Web and Mobile Apps
If you have a troubleshooting need or are interested in automating your operation for further growth, then I look forward to hearing more from you.
You’ll appreciate my work ethic, professionalism, and ability to navigate complex tasks with excellent project follow-through.
Whether you’re a startup building your next SaaS, an enterprise modernizing legacy systems, or a company scaling your platform, I’m here to deliver a back-end solution that’s secure, fast, and built for the future.
Certified GoHighLevel Consultant working remotely, helping brands launch, re-launch & scale online, leveraging the Go HighLevel Software CRM system/tools.
Go High Level is constantly updating its software, and my part-time hobby is remaining on the leading edge and testing new features while sharing them out to clients immediately for more effective results.
I’m happy to work on any challenging GoHighLevel Projects, micro or macros, and looking forward to a video/phone call to assess your needs whenever you need me, seven days a week, 4 hrs a day!
What I Offer:
- Platform Setup & Configuration
- Marketing Automation
- Sales Pipeline Creation
- CRM Implementation
- SMS & Email Campaigns
- Booking & Appointment System
If you’re interested in our profile and experience, please feel free to reach out if you’d like to discuss anything further.
Available to get hired on a Part-time, Full Time and Dedicated Basis
Let’s talk about your goals and explore how I can help you bring your .NET project to life. Message me anytime to get started.
.NET Framework
ERP Software
Azure App Service
ASP.NET Core
Microsoft Visual Studio
Entity Framework
ASP.NET
CRM Software
Microsoft Windows
Umbraco
ASP.NET MVC
C#
Microsoft SQL Server
HighLevel
Marketing Automation
Mehul P.
Ahmedabad, India
$40/hr
5.0
91 jobs
Hi, I’m Mehul, a Top-Rated-Plus AWS Expert and DevOps Engineer who helps startups and founders launch and scale reliable SaaS, healthcare, and fintech platforms on AWS.
✅ Top 1% Upwork Freelancer
✅ 125+ Projects Completed
✅ 7000+ Hours Worked
✅ Top-Rated Plus on Upwork
✅ AWS Certified Developer - Associate 🏆 🏆
I’ve designed systems serving 2M+ users, built HIPAA-compliant healthcare apps, and helped teams cut cloud bills by 30–40 % without compromising performance. My focus is simple: build it once, make it scale, and keep your costs under control.
✅ What I Do
➥ Architect secure, serverless AWS setups using Lambda, API Gateway, and DynamoDB
➥ Deploy AI Agent to AWS with Bedrock
➥ Automate deployments with Terraform, GitHub Actions, and CodePipeline
➥ Optimise infrastructure for speed, uptime, and cost
💡 Why Work With Me
➥ 7+ years in AWS DevOps
➥ $300 K+ earned on Upwork, 100 % Job Success
Known for clear communication, quick delivery, and long-term reliability
Let’s connect if you’re building a product and want an AWS setup that’s secure, scalable, and easy to manage so you can focus on growing your business while I handle the cloud.
Experienced with Amazon EC2, S3, RDS, Aurora, DynamoDB, ElastiCache, CloudFront, API Gateway, Step Functions, EKS, Fargate, CodePipeline, CodeBuild, CloudWatch, Grafana, Prometheus, GuardDuty, Security Hub, AWS Organisations, SCPs, KMS, Secrets Manager, IAM, WAF, Route53, ACM, Amplify, SageMaker, Bedrock, OpenSearch, and CloudFormation. Python, Bash, TypeScript, Node.js, Docker,
Kubernetes, GitHub Actions, GitLab CI, Jenkins, n8n, Zapier.
Amazon Web Services
Node.js
Amazon EC2
AWS Lambda
DevOps
ChatGPT
Amazon S3
Amazon Lightsail
Terraform
AWS Development
DevOps Engineering
Docker
AI Agent Development
Amazon Bedrock
Claude
John M.
Bengaluru, India
$34/hr
5.0
48 jobs
🔢 As an Upwork Top 1% Expert Vetted 👑 OSCP, Certified Ethical Hacker and an Experienced Penetration Tester with 10+ years of experience Penetration Testing Web SaaS and Mobile based applications and networks, every flaw tells a story; I write the ending and specialize in helping my clients strengthen their cybersecurity defenses.
An average Cybersecurity Incident in your business can you cost you anywhere between $120,000+ to $1.24+ million and even a 10%+ reduction in risk can save your business nearly $124,000+ and hiring a full time in-house team can cost you $100,000+ per employee per year. That is why you need an expert like me to protect your business and reduce your business risk.
What makes me stand out from other freelancers is the fact that I am also a Cybersecurity Architect, capable of architecting solutions to enhance the security of your organisation and preserving the security and integrity of your data.
I have always been passionate about solving technical problems for my clients through Pen Testing and I don't rest till I get to the root of the problem and solve it.
What I can offer?
I can help you secure your business by providing the following services:
✅ Web Application Penetration Testing,
✅ Secure Source Code Analysis,
✅ Mobile Application Penetration Testing,
✅ Network Penetration Testing,
✅ Secure Architecture Review,
✅ API Security Testing,
✅ Secure Configuration Review,
✅ Secure Code Review,
✅ CASA Assessment,
✅ Red Team Assessment,
✅ Threat Modelling,
✅ Phishing Simulations & Assessment.
Why Choose Me?
🧑🏼💼 Client-Centric Approach: Your security is my top priority. I work closely with your team to understand your objectives and deliver tailored services that align with your business goals. Trust and transparency are the cornerstones of my practice, and I am committed to helping you navigate the complex landscape of cybersecurity with confidence and achieve compliance.
📐 Comprehensive Security Assessments: I conduct detailed SOC Type 2 / ISO compliant evaluations to identify vulnerabilities in your network, applications, and infrastructure.
✂️ Tailored Solutions: Every organization is unique. I customize my approach to meet your specific security needs and industry standards.
🎬 Actionable Recommendations: Post-assessment, I provide clear, concise, and practical remediation steps to address identified vulnerabilities.
🔁 Ongoing Support: Cybersecurity is an ongoing process. I offer continuous support and re-assessment to ensure your defenses remain robust against evolving threats
🌏 Holistic Approach: I don't just patch vulnerabilities; I architect comprehensive security solutions that align with business goals. My focus extends beyond the technical to encompass risk management and organizational resilience.
🗨️ Collaborative Communicator: I bridge the gap between technical jargon and business language, fostering understanding across teams. Effective communication is key to successful security implementation.
🏫 Continuous Learning: The threat landscape evolves, and so do I. Whether it's a new attack vector or an emerging technology, count me in. Learning is my superpower.
🙋♂️ Key Skills:
✔️ Penetration Testing & Vulnerability Assessment: I thrive on dissecting systems, identifying weaknesses, and recommending robust solutions. Armed with tools like Kali Linux, Metasploit, Nmap, and Wireshark, I delve into web applications, networks, and APIs. But here's the twist—I don't stop at discovery; I offer a free retest after remediation to ensure vulnerabilities stay sealed.
✔️ Network Security: I've designed and implemented secure network architectures, ensuring data confidentiality, integrity, and availability. Firewalls, intrusion detection systems, and VPNs—my toolkit covers it all.
✔️ Cloud Security: Proficient in securing cloud environments especially Amazon Web Services (AWS) & Oracle Cloud Infrastructure (OCI). I stress-test cloud deployments ensuring they withstand real-world attacks.
✔️ Secure Coding Practices: I advocate for secure coding principles using tools like SonarQube and collaborate with development teams to build resilient applications. Prevention beats cure, every time.
⛏️Tools I Use
☑️ Penetration Testing: Nmap, Metasploit, Burp Suite Professional, Wireshark, SQLmap, Kali Linux
☑️ Programming & Scripting Skills: Python, Bash, PowerShell, JavaScript, Java and C#
☑️ Security Frameworks & Standards: OWASP, NIST, CASA, CIA Triad, PCI-DSS
🫱🏽🫲🏽 Let's Connect: Ready to enhance your business/organization's security? Let's chat! Reach out to me here on Upwork, and let's build a safer digital future together.
🟢 Press '...' button and then ‘Send Message’ button in the top right-hand corner ✉️
🚫 No hacking service - I do not provide any hacking services, and I will not engage in any activities that involve gaining unauthorized access to any accounts, systems, or social media platforms. Requests for such services will be declined.
Penetration Testing
Network Penetration Testing
Security Testing
Security Assessment & Testing
Vulnerability Assessment
Information Security
Application Security
Web Application Security
Network Security
System Security
Web App Penetration Testing
Website Security
Black Box Testing
OWASP
Risk Assessment
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Emerald Tiger
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Kinetic Investments
“Our very specific requirements can be a challenge—With Upwork, we’re able to access a bigger community to ensure the success of our projects.”
KK
Katja Krohn
Summa Linguae
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