Penetration Testing Jobs

Penetration Testing, or “pentesting” for short, is a valuable service for businesses and organizations of all sizes. It involves trying to access a system, website, or service illegally in order to expose any vulnerabilities that hackers can exploit. This allows IT departments and the people that protect the organization’s data to see those security issues before anyone malicious does. A Penetration Tester can help an organization keep their systems securely running by tackling any issues they discover while testing their systems.

Here's some projects that our expert Penetration Testers made real:

  • Demonstrating proprietary techniques and practices related to identifying and remediating security vulnerabilities
  • Preparing vulnerability assessment reports on potential weak spots in existing infrastructure
  • Optimizing systems for increased resilience with rigorous stress and load tests
  • Evaluating networks and services for common exploits that can easily be addressed
  • Exploring custom software for any issues prior to release
  • Securing voice counter-parties with careful auditing of cloud functions

Penetration Testing is one of the more comprehensive ways a company can test their security vulnerabilities, exposing any issues before they become a problem. Freelancer.com has plenty of experienced Penetration Testers ready to take on your project. Don’t put the security of your business at risk by waiting to address these potential issue. Post your project today and hire a Penetration Tester on Freelancer.com.

From 9,050 reviews, clients rate our Penetration Testers 4.94 out of 5 stars.
Hire Penetration Testers

Penetration Testing, or “pentesting” for short, is a valuable service for businesses and organizations of all sizes. It involves trying to access a system, website, or service illegally in order to expose any vulnerabilities that hackers can exploit. This allows IT departments and the people that protect the organization’s data to see those security issues before anyone malicious does. A Penetration Tester can help an organization keep their systems securely running by tackling any issues they discover while testing their systems.

Here's some projects that our expert Penetration Testers made real:

  • Demonstrating proprietary techniques and practices related to identifying and remediating security vulnerabilities
  • Preparing vulnerability assessment reports on potential weak spots in existing infrastructure
  • Optimizing systems for increased resilience with rigorous stress and load tests
  • Evaluating networks and services for common exploits that can easily be addressed
  • Exploring custom software for any issues prior to release
  • Securing voice counter-parties with careful auditing of cloud functions

Penetration Testing is one of the more comprehensive ways a company can test their security vulnerabilities, exposing any issues before they become a problem. Freelancer.com has plenty of experienced Penetration Testers ready to take on your project. Don’t put the security of your business at risk by waiting to address these potential issue. Post your project today and hire a Penetration Tester on Freelancer.com.

From 9,050 reviews, clients rate our Penetration Testers 4.94 out of 5 stars.
Hire Penetration Testers

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    11 jobs found

    I need a seasoned ethical hacker to run a full black-box penetration test against my own website. You will have no prior credentials or internal access; your job is to probe the public-facing application exactly as an external attacker would. Primary focus areas • SQL injection • Cross-site scripting (XSS) • Broken authentication I can supply formal, written authorization before any testing begins, ensuring everything is 100 % legal and above board. Please follow recognised methodologies such as OWASP Top 10, using tools you are comfortable with—Burp Suite, OWASP ZAP, Kali, or similar—combined with manual verification. Deliverables I expect • Executive summary outlining overall risk posture • Detailed technical report for each finding (st...

    $509 Average bid
    $509 Avg Bid
    107 bids

    I need a seasoned ethical hacker to uncover and clearly document every security weakness lurking in our mobile applications and the underlying network infrastructure. You will have formal authorisation to test, but there are a few boundaries: production customer data is off-limits and any denial-of-service style traffic must be kept to agreed-upon off-peak windows. Everything else inside the defined scope is fair game. During the engagement you are free to use the tools you prefer—Burp Suite, OWASP ZAP, Metasploit, Wireshark, custom scripts—so long as the final results are reproducible. Deliverables • A concise executive summary followed by a detailed technical report for both the mobile apps and network layers. • Proof-of-concept evidence (screenshots, request/...

    $84 Average bid
    $84 Avg Bid
    11 bids

    I am looking to purchase or acquire 100 GB of pro-level ethical hacking training materials specifically focused on network analysis with all attacks tutorial . The primary interest is in high-quality eBooks that provide in-depth learning within this niche. If you have collections or access to such resources that align with professional-level training, please get in touch with details about the content and how it addresses network analysis.

    $258 Average bid
    $258 Avg Bid
    7 bids

    I need a thorough, legally-compliant security assessment carried out on my digital environment. The exact scope—whether web applications, mobile apps, network infrastructure, or a mix—will be finalised once we have an NDA in place, so please come prepared to advise on the areas you feel will yield the most value. You are free to employ black-box, white-box, or grey-box techniques; I welcome your professional recommendation on the approach that suits our situation best. Whichever method we settle on, the engagement must follow recognised standards (OWASP, NIST, or equivalent) and remain fully within the bounds of responsible disclosure. Deliverables expected: • Written engagement plan outlining agreed scope, methodology, and test schedule • Hands-on exploitation an...

    $490 Average bid
    $490 Avg Bid
    41 bids

    I am preparing to release the final payment to my current development team and want absolute confidence that the code base is clean, secure, and free of anything that could be used against me later. Your mission is to perform an independent, end-to-end audit that zeroes in on code quality and security, followed by a roadmap for reliable, Texas-based support. Scope of the audit • Code review and best practices – confirm style consistency, proper version control use, and absence of hard-coded secrets or hidden backdoors. • Security vulnerabilities – static and dynamic analysis, penetration testing where appropriate, and a clear risk matrix that prioritizes critical fixes. • Performance health – benchmark speed and efficiency, stress-test error han...

    $250 - $750
    Sealed NDA
    $250 - $750
    36 bids

    I need a seasoned security professional to perform an end-to-end audit of our custom web application and the public-facing site that supports it. The focus is firmly on discovering and documenting application-level vulnerabilities—SQL injection, XSS, authentication flaws, insecure APIs, misconfigured headers, anything that could slip past regular QA. Scope • Black-box and white-box testing of every user flow, admin panel, and API endpoint • Automated scanning with tools such as Burp Suite, OWASP ZAP, Nessus or equivalents, followed by manual verification • Review of server configuration files, access controls, and session management logic • Threat modelling to highlight realistic attack paths and business impact Deliverables 1. Full log set from all a...

    $274 Average bid
    $274 Avg Bid
    19 bids
    Black Box Website PenTest
    2 days left
    Verified

    I need an experienced ethical hacker / cybersecurity professional to test my website for security vulnerabilities. The work must be legal, controlled, and limited only to my own website. Please check for issues such as: SQL injection XSS Login/security weaknesses File upload vulnerabilities Admin panel exposure WordPress/plugin issues, if applicable Server/header security SSL/HTTPS configuration Malware/backdoor checks General vulnerability report I need a written report showing: What vulnerabilities were found Risk level: low / medium / high / critical Proof of issue without damaging the site Clear steps to fix each issue Important: No destructive testing, no spam, no DDoS, no data deletion, and no testing outside my domain. Skills required: Ethical Hacking, Penetration Testing, Web...

    $543 Average bid
    $543 Avg Bid
    59 bids

    I need an experienced ethical hacker to assess the security of my production web application. The platform handles login credentials—users sign in with their mobile number and password—so I want to be absolutely certain this flow cannot be abused. Scope • Run a full penetration test coupled with an automated and manual vulnerability scan. • Focus especially on authentication, session management, and any area where those credentials travel or are stored. Deliverables - A clear, step-by-step report detailing every finding, severity rating, and proof-of-concept where exploitation is possible. - Practical remediation advice I can hand straight to my development team. - A concise executive summary of overall risk. All testing must respect live-traffic uptime, ...

    $25 Average bid
    $25 Avg Bid
    17 bids

    Commission-Based Sales Experts Needed for AI Poker Bot I’m looking for skilled sales freelancers who can help sell my AI-powered Poker Bot to potential clients and poker communities. This is a commission-only opportunity with strong earning potential for every successful sale you bring in. What You’ll Sell: • Advanced Poker Bot / Poker Agent • Smart gameplay automation • Modern UI and real-time features • Built for online poker players and enthusiasts Who I’m Looking For: • Freelancers with sales experience • Affiliate marketers • Discord/Telegram community managers • People with poker or gaming connections • Anyone confident in lead generation and closing deals What You Get: • Attractive commission per sale • Lo...

    $260 Average bid
    $260 Avg Bid
    3 bids

    Saya membutuhkan bantuan pengembang web berpengalaman untuk mengoptimalkan performa situs saya, dengan fokus khusus pada keamanan dan perlindungan data. Prioritas utama saya adalah memastikan semua celah keamanan tertutup, data pengguna terenkripsi, dan praktik terbaik keamanan web diterapkan tanpa mengorbankan kecepatan akses halaman. Lingkup pekerjaan: • Melakukan audit keamanan menyeluruh untuk mengidentifikasi kerentanan pada server, database, dan kode. • Menerapkan perbaikan—termasuk konfigurasi SSL/TLS yang tepat, pembaruan dependensi, hardening server, dan firewall aplikasi web. • Mengaktifkan atau menyesuaikan pemantauan intrusi serta log keamanan guna mendeteksi aktivitas mencurigakan secara real-time. • Menyusun dokumentasi ringkas berisi langkah-...

    $18 / hr Average bid
    $18 / hr Avg Bid
    18 bids

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