Advanced Security Assessment for High-scale Platform

@offensiumvault

We at Offensium Vault Private Limited (ISO 27001:2022 & ISO 9001:2015) would be a strong fit for this engagement. Our team specializes in advanced penetration testing and security assessments across web, mobile, APIs, and cloud infrastructures, with a focus on real-world attack simulation and architectural security. What we bring • Deep expertise in OWASP Top 10, API security, authentication systems, and business logic flaws • Hands-on experience with tools like Burp Suite, Nmap, Metasploit, Frida, and custom exploit scripts • Strong background in cloud security (AWS/Azure/GCP), microservices, and CI/CD security • Experience working with SaaS, fintech, healthcare, and real-time systems Added Value • Proven bug bounty experience with findings across 50+ global platforms • Ability to identify complex attack paths, data exposure risks, and real-time system vulnerabilities • Clear reporting with PoCs, impact analysis, and actionable remediation guidance We focus beyond surface-level testing—analyzing how systems behave under attack and helping strengthen them at both technical and architectural levels. Happy to share portfolio, sample reports, and discuss next steps.

@Venkatesan03

Hi Brother, I have 5+ years of experience in penetration testing including Web Application penetration testing; System Application penetration testing; Mobile application penetration testing; Network application penetration testing; social engineering penetration testing etc. Follow systematic approach and best industry methodology like OWASP Testing Guide v4(OTGv4) ; SANS top 25; NIST SP 800-115; PCI DSS etc to perform penetration testing : Web Application Testing : Perform both manual and automated penetration testing for vulnerabilities like SQL injection, Cross-site scripting(XSS), Cross-site request Forgery(CSRF), Code injections, Authentication Bypass, Access Violation, Remote File inclusion(RFI),Local File Inclusion(LFI) etc. Network Testing: Provide Network Penetration Testing so that your Network Infrastructure is secured from the real attacks. Perform both manual and automated network penetration testing to identify network security threats in your network. I can assure you that I will be an ideal candidate for what you are looking for. Please out to me for further discussions. Thank you

@hellod60

I'm have lot of experience in maximul all the fields in cybersecurity and currently working for Rolls Royce, BMW, JLR. I do have nearly 7 years of total experience in cybersecurity.

@Manch555

Hello, I specialize in web application and API security, with a strong focus on identifying vulnerabilities from an attacker’s perspective. I have hands-on experience working with OWASP Top 10 issues, particularly in authentication flaws, session management, and API logic vulnerabilities such as CSRF, IDOR, and authorization bypass scenarios. I focus not only on automated scanning but also on manual testing and analyzing business logic for non-obvious attack vectors. My background in backend development (FastAPI, PostgreSQL, Docker) allows me to better understand modern architectures and identify deeper issues within real-world systems, including API flows and service interactions. I am actively developing my skills in penetration testing and offensive security, including API security testing and distributed systems analysis. I can perform detailed security assessments, provide clear proof-of-concept reports, and suggest practical remediation steps to strengthen your system. I’d be glad to contribute to improving the security and resilience of your platform.

@gundalar1

Drawing on over three years of experience as a Software Test Engineer, I have not only developed a deep understanding of testing methodologies but have also honed my skills in penetration testing and maintaining cyber security. More specifically, I haveample experience in detecting vulnerabilities, performing security audits, penetration testing and vulnerability assessments -- key areas your project requires. Having worked on web applications, mobile apps, APIs, and backend systems, I am well-acquainted with the intricate complexities that lie beneath high-scale platforms such as yours. With hands-on expertise in Docker containers and cloud infrastructures like AWS, I can help ensure that your applications are secure throughout the different stages of development in line with modern architectures. Though I'm a results-oriented person committed to resolving issues efficiently, my greater focus isn't just detecting loopholes but understanding how complex systems behave under attacks. This ability to think like an attacker will be crucial- allowing me to identify potential vulnerabilities and develop solid remediation steps to shore up your system's architecture. If given the chance to work on this project, I am confident that my unique skill mix will prove valuable in building something both secure and scalable for you.

@dparas780

I can help you with both red teaming and blue teaming roles as I have experience in both areas. I can work in flexible hours as per the company/project requirements.

@dhruvp2002

I’m very interested in your project and confident I can deliver deep, architecture-level security insights for your platform. I have hands-on experience in advanced penetration testing and security assessments across web applications, APIs, and cloud-based infrastructures, especially in systems involving real-time data processing and financial transactions. How I can help: * Perform comprehensive security testing on web, mobile, API, and backend layers * Identify critical vulnerabilities aligned with OWASP Top 10 and beyond * Test authentication flows, session handling, and API security mechanisms * Simulate real-world attack scenarios to uncover business logic flaws * Assess cloud infrastructure, misconfigurations, and distributed systems risks * Provide clear, actionable reports with Proof of Concepts (PoCs) and remediation steps Technical Expertise: * Tools: Burp Suite, Nmap, Metasploit, OWASP ZAP, and custom scripts * API security testing (REST, GraphQL) * Experience with real-time systems, data streaming, and latency-sensitive environments * Knowledge of cloud platforms and containerized architectures (Docker, microservices) I focus not just on finding vulnerabilities, but on understanding how systems behave under attack and helping build secure, scalable architectures.

@kamaleshp1

As an experienced cybersecurity professional specializing in web and mobile application security, I deliver meticulous penetration testing aligned with project requirements. Over five years, I’ve mastered Burp Suite, OWASP ZAP, SQLMap, Nikto, and Nmap, applying repeatable, standards-driven methodologies. My testing aligns with OWASP Top 10, uncovering issues such as SQL injection, XSS, and other critical threats. I hold the OSCP certification, reflecting strong technical expertise and ethical practice. Beyond identifying vulnerabilities, I provide clear, actionable remediation guidance, ensuring security improvements are practical, measurable, and effective. Clients receive comprehensive reports, risk prioritization, and ongoing support throughout remediation cycles and follow-up validation.

@dipak1337

I’m a Cybersecurity Specialist & Penetration Tester with 8+ years of experience in AppSec, bug bounty, and real-world security assessments of web, mobile, and API-driven systems. I specialize in **deep, attacker-mindset testing** not just OWASP checks, but identifying real exploitation paths across complex, high-scale architectures. **What I bring:** • End-to-end pentesting (Web, Mobile, APIs, Backend systems) • Strong expertise in **authentication, session management, and business logic flaws** • API security testing (JWT, OAuth, rate limiting, data exposure) • Experience with **real-time systems, data flows, and edge-case exploitation** • Cloud & infra security (misconfigurations, IAM issues, exposed services) • Hands-on with tools like Burp Suite, Nmap, Metasploit, OWASP ZAP + custom scripts **Approach:** • Black-box + grey-box testing with manual deep dives • Chaining vulnerabilities for real-world impact • Clear PoCs, risk ratings, and actionable remediation • Focus on high-impact issues (auth bypass, data leaks, privilege escalation) **Background:** • Active bug bounty hunter (real vulnerabilities reported) • Experience with production-scale apps and secure architecture reviews • Strong understanding of CI/CD, microservices, and modern attack surfaces I can contribute as a long-term security partner and help harden your platform beyond surface-level testing. Available immediately for this 6-month engagement. Profile: https://www.freelancer.com/u/dipak1337

@SaidGarazade

I have looked at what you need for a term check of your big platforms security. As a specialist in security who has experience in finding weaknesses I do not just find problems I also understand how they affect systems. I have certifications like eCPPT and eJPT. My time working with the Dante Pro Lab has taught me how to test systems that are spread out and internal networks. I am very good at working with Linux. I use Python to make custom tools to help with security checks. I know a lot about the OWASP Top 10 and how to secure the parts of a system that people do not see, like the backend. For the six months I can keep an eye on your security all the time do deep checks to find weaknesses and give you advice on how to make your systems strong. I will make sure to give you examples of problems and clear plans to fix them. My goal is to make sure your systems can handle any attack. I will work hard to give you quality work and clear instructions, on how to fix security issues.