Hire the Top 3% of Freelance Application Security Specialists

Toptal is a marketplace for top Application Security Specialists. Top companies and startups choose Toptal Application Security freelancers for their mission-critical software projects.

No-Risk Trial, Pay Only If Satisfied.

Clients Rate Toptal Application Security Specialists4.9 / 5.0on average across 339 reviews as of Jun 12, 2024

Hire Freelance Application Security Specialists

Fattis N. Mann

Freelance Application Security Specialist
United States
Toptal Member Since February 10, 2023

Fattis is one of the most talented and seasoned information security executives in the market today. Having worked as a vCISO and a BISO director of business enablement and resilience for a Fortune 500, he brings together solid project management, communication, and documentation skills, specifically leveraging cybersecurity in business settings. Fattis is CAP, CDPSE, CISSP, and CRISC certified and is highly effective in communicating cybersecurity to both technical and non-technical staff.

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Daniel Clarke

Freelance Application Security Specialist
Spain
Toptal Member Since November 4, 2022

Daniel has 15 years of experience building information security in SaaS environments, including introducing DevSecOps, OWASP SAMM, penetration testing, threat models, static analysis, security monitoring, security incident and event management (SIEM), security operations center (SOC), and incident response. The company he works for has achieved SOC 2 Type 2 and HIPAA certifications and compliance with the general data protection regulation (GDPR).

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Ike Anyanwu

Freelance Application Security Specialist
United States
Toptal Member Since May 5, 2021

Ike is a senior cloud security engineer with 12 years of experience and a solid knowledge of the National Institute of Standards and Technology (NIST) and International Organization for Standardization (ISO) publications, cybersecurity, cloud, and DevSecOps tools. He's deployed multiple security tools to monitor and mitigate attacks on infrastructure. Ike is proficient in infrastructure as code, managing a CI/CD pipeline, and protecting applications, websites, cloud networks, and infrastructure.

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Alex Zirka

Freelance Application Security Specialist
Netherlands
Toptal Member Since August 30, 2018

Alex is a seasoned and enthusiastic application security engineer with 13+ years of experience in penetration testing, back-end development, cloud platform management, DevOps engineering, and IT infrastructure. His back-end development background allows him to use automation in security analysis and penetration testing and helps to establish and maintain the SDLC process. DevOps-wise, Alex is most skilled and experienced with Linux systems and infrastructure management.

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Se Yong Oh

Freelance Application Security Specialist
Australia
Toptal Member Since November 21, 2022

Se Yong is a security architect with extensive experience in application development and IT operations. His expertise ranges from strategic leadership and project management to solution architecture and technical leadership. In addition, Se Yong has in-depth knowledge and experience with the Azure cloud and various Microsoft technologies. With his diverse skillset in IT and security, Se Yong would be a valuable addition to any engineering team.

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Arun Pillai

Freelance Application Security Specialist
United Arab Emirates
Toptal Member Since December 1, 2022

Arun is a senior DevSecOps architect with 12 years of experience and a master's degree in IT. He has worked with government departments, banks, telecoms, healthcare companies, and small to medium-scale enterprises worldwide. Arun also has solid expertise in IT security consulting, focusing on DevSecOps, risk assessment, threat and vulnerability management, vulnerability assessment penetration testing, secure code review, security architecture review, and cloud security and migrations.

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Ayhan Tek

Freelance Application Security Specialist
Canada
Toptal Member Since November 29, 2022

Ayhan is a cyber security professional experienced in implementing and managing cyber security and DevSecOps programs. He has worked on security projects for different industries, handling virtual CISO, risk assessment and management, threat modeling, and security architecture, audit, and training. He is keen on using SAST and DAST security tools and handling governance, risk, and compliance issues. Ayhan is a CISSP, CISM, TOGAF, and ITIL-certified professional willing to embrace new projects.

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Donovan Francesco

Freelance Application Security Specialist
South Africa
Toptal Member Since May 18, 2021

Donovan is a senior DevSecOps specialist with over 21 years of experience in the IT industry. He is an AWS, GCP, and Azure services expert, specializing in Infrastructure-as-code (IaC) using Terraform, Ansible, Chef, and Puppet to drive automation and security standards in CI/CD pipelines. Donovan is a veteran of solving complex problems, and with his unique security background, he architects solutions using industry best practices.

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Jeremy Lee

Freelance Application Security Specialist
Australia
Toptal Member Since November 1, 2022

Jeremy has 10+ years of cyber security experience, specializing in application security and DevSecOps. With a software engineering background, he helped agile scrum teams in all security engineering activities in the SDLC, from security requirements, secure architecture design, and threat modeling to secure code review. He has also been heavily involved in CI/CD pipelines that incorporate automated static code analysis and software component analysis, such as OSS scanning.

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Joe Leon

Freelance Application Security Specialist
United States
Toptal Member Since May 18, 2022

Joe currently oversees application security assessments for a small offensive security firm and manages product development and DevOps for a new cybersecurity tool his organization is about to release. In addition, Joe has provided security training and talks at several major cybersecurity conferences, most notably at Black Hat USA. As a technical problem solver with outstanding communication skills, he is passionate about bridging technical and non-technical audiences.

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Daniel Yinanc

Freelance Application Security Specialist
Canada
Toptal Member Since February 6, 2019

Daniel is a data scientist and AI/ML engineer with over a decade of experience in the field, mainly specializing in data science and machine learning domains with a particular emphasis on building high-security ML platforms. He has worked for over a decade as a data scientist, application security architect, and principal consultant specializing in data science, cybersecurity, and machine learning.

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Testimonials
Tripcents wouldn't exist without Toptal. Toptal Projects enabled us to rapidly develop our foundation with a product manager, lead developer, and senior designer. In just over 60 days we went from concept to Alpha. The speed, knowledge, expertise, and flexibility is second to none. The Toptal team were as part of tripcents as any in-house team member of tripcents. They contributed and took ownership of the development just like everyone else. We will continue to use Toptal. As a startup, they are our secret weapon.

Brantley Pace

CEO & Co-Founder

I am more than pleased with our experience with Toptal. The professional I got to work with was on the phone with me within a couple of hours. I knew after discussing my project with him that he was the candidate I wanted. I hired him immediately and he wasted no time in getting to my project, even going the extra mile by adding some great design elements that enhanced our overall look.

Paul Fenley

Director

The developers I was paired with were incredible -- smart, driven, and responsive. It used to be hard to find quality engineers and consultants. Now it isn't.

Ryan Rockefeller

CEO

Toptal understood our project needs immediately. We were matched with an exceptional freelancer from Argentina who, from Day 1, immersed himself in our industry, blended seamlessly with our team, understood our vision, and produced top-notch results. Toptal makes connecting with superior developers and programmers very easy.

Jason Kulik

Co-Founder

As a small company with limited resources we can't afford to make expensive mistakes. Toptal provided us with an experienced programmer who was able to hit the ground running and begin contributing immediately. It has been a great experience and one we'd repeat again in a heartbeat.

Stuart Pocknee

Principal

How to Hire Application Security Specialists Through Toptal

1

Talk to One of Our Industry Experts

A Toptal director of engineering will work with you to understand your goals, technical needs, and team dynamics.
2

Work With Hand-Selected Talent

Within days, we'll introduce you to the right Application Security specialist for your project. Average time to match is under 24 hours.
3

The Right Fit, Guaranteed

Work with your new Application Security specialist for a trial period (pay only if satisfied), ensuring they're the right fit before starting the engagement.

FAQs

  • How are Toptal Application Security specialists different?

    At Toptal, we thoroughly screen our Application Security specialists to ensure we only match you with talent of the highest caliber. Of the more than 200,000 people who apply to join the Toptal network each year, fewer than 3% make the cut. You’ll work with engineering experts (never generalized recruiters or HR reps) to understand your goals, technical needs, and team dynamics. The end result: expert vetted talent from our network, custom matched to fit your business needs.

  • Can I hire Application Security specialists in less than 48 hours through Toptal?

    Depending on availability and how fast you can progress, you could start working with an Application Security specialist within 48 hours of signing up.

  • What is the no-risk trial period for Toptal Application Security specialists?

    We make sure that each engagement between you and your Application Security specialist begins with a trial period of up to two weeks. This means that you have time to confirm the engagement will be successful. If you’re completely satisfied with the results, we’ll bill you for the time and continue the engagement for as long as you’d like. If you’re not completely satisfied, you won’t be billed. From there, we can either part ways, or we can provide you with another expert who may be a better fit and with whom we will begin a second, no-risk trial.

Tap Into World-Class Talent

  • Trusted Experts Only

    Trusted Experts Only

    All of our talent are seasoned experts who ramp up quickly, readily contribute as core team members, and work with you to minimize onboarding time.

  • The Right Fit

    The Right Fit

    We have a knack for matching you with the right fit. Start working with your new hire on a no-risk trial period, paying only if satisfied.

  • Scale as Needed

    Scale as Needed

    Hire talent within 48 hours and scale your team up or down as needed, no strings attached.

  • Seamless Hiring

    Seamless Hiring

    We handle all aspects of billing, payments, and NDA’s. Let us take care of the overhead while you focus on building great products.

  • Flexible Engagements

    Flexible Engagements

    Choose the engagement type that suits your needs — hourly, part-time, or full-time — with the ability to change anytime.

  • Expert Talent Matching

    Expert Talent Matching

    Focus on your project and enjoy support from your dedicated account executive and expert talent matcher.

Top Application Security Specialists Are in High Demand.

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