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Hire the best system security developers near Philadelphia.

Toptal is a marketplace for top remote system security developers. Top companies and start-ups in Philadelphia choose Toptal System security freelancers for their mission-critical initiatives.
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Hire remote system security developers near Philadelphia or in a similar time zone

Stefan Progovac

Member since January 31, 2015
Stefan is a highly skilled iOS developer with a master's degree in physics. He loves both technological and artistic sides of software engineering. He has had the pleasure to work on some popular enterprise-level apps used by millions of people for companies like Target, Best Buy, and Coca-Cola. He believes that app development is truly an art. Click to continue

Luke Sapan

Member since July 7, 2015
Luke is an efficient and passionate Software Engineer with more than 14 years of programming experience. He has excelled in leadership positions but is also great with solo projects. Luke loves full-stack web development and his recent projects exemplify this in the field of administration. Luke is currently working in a senior engineering and systems administration position. Click to continue

Jon Fenner

Member since December 6, 2017
Jon has over 20 years of experience in web application design, development, and infrastructure using a variety of platforms, including Java, ReactJS, NodeJS, and MySQL. He communicates extremely well, and works well both individually and as a team player or leader. Click to continue

Andy Potanin

Member since January 30, 2018
Andy is a businessman who understands the fundamentals of business and who knows how to code. Overall, he's very experienced in nearly all aspects of contemporary web development, deployment, DevOps, and the elements of building a solid stack that can scale. Early on in his career, he was a very early adopter of Docker and Node.js and has a strong development background with the WordPress API. Click to continue

Harrison Beckerich

Member since March 14, 2018
I have 4 years experience with Javascript specializing with NodeJs and React. I can write Solidity smart contracts as well as set up full nodes for any cryptocurrency. Click to continue

Nitin Punjabi

Member since July 9, 2016
Nitin has nine years of programming experience in a variety of systems, mostly in the finance domain. He specializes in blockchain applications and architecture and is a certified Ethereum developer, though he has been exposed to multiple protocols. Click to continue

Dave Poirier

Member since August 15, 2017
Since 2010, Dave has been working full-time as an iOS developer in Objective-C and Swift. He also has 20 years of experience in software development specializing in Assembly (Intel) and C. Throughout the years, he's had the opportunity to work on many software development projects in a myriad of software languages. Click to continue

Jonathan Bethune

Member since February 13, 2018
Jonathan is an experienced DevOps engineer based in Tokyo and New York. He's worked for a number of startups building the infrastructure and improving security. He has a very strong knowledge of machine learning, data analysis, infrastructure development, and data layer optimization. One of his best qualities is his knack for quickly learning new things which is why he landed in DevOps because it is the best field for trying new technologies. Click to continue

Gabriel Bull

Member since February 9, 2014
Gabriel excels at development, design, and branding. He combines these skills every day to imagine, draw, and build amazing web sites and web applications, from the ground up to final deployment. Click to continue

Matthew Best

Member since April 5, 2016
Matt is a passionate, talented software developer with over five years of experience developing complex applications in the fields of cyber security, automated tools, web applications, and back-end support systems. He is an expert in Windows applications, but is also proficient in creating cross-platform and web applications. He is an avid learner, a great communicator, and an excellent addition to teams of all sizes. Click to continue
system security developers
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Testimonials
“Toptal helped us when we had a hiring gap we needed to fill. The developer we received was excellent, with a great work ethic and fit in very well with the team. We are very happy with the service and would definitely consider using Toptal again in future should we need additional help. ”
David Gildeh
CEO @ Dataloop.io
“We have been incredibly happy with our Toptal experience. Initially a skeptic, the process to find and recruit a fabulous iOS developer was very easy. Rather than sifting through hundreds of CVs, we saw two and hired them. They have worked effectively, getting up to speed incredibly quickly and have almost become part of the team. We would definitely use Toptal again. ”
James O'Day
Co-Founder @ Pearlshare
“We used Toptal to hire a developer with extensive Amazon Web Services experience. We interviewed four candidates, one of which turned out to be a great fit for our requirements. The process was quick and effective. ”
Abner Guzmán Rivera
CTO and Chief Scientist @ Photo Kharma
“Toptal's developers and architects have been both very professional and easy to work with. The solution they produced was fairly priced and top quality, reducing our time to launch. Thanks again, Toptal.”
Jeremy Wessels
CEO @ Kognosi
“Our experience with Toptal was very good. We had an open ended development project when we got started and the programmer from Toptal was very helpful, working with us on everything from the top level outline all the way down to development and delivery of functioning code." ”
Michael Milton
VP of Engineering @ SLANTRANGE
“Getting set up with Toptal and finding a new team member was so easy, I don't know why anyone wouldn't give it a try. Best of all, we no longer have to worry about finding great people to help with our projects!”
Mike Branch
President & CTO @ Harbor System Integrators, Inc
“One of their engineers from Colombia has joined our team as a full-time developer for more than 6 months, sometimes flying to work on-site in New York City with us. He is one of the best developers I've ever worked with.”
Carter Cleveland
CEO @ Artsy
“Toptal makes finding qualified engineers a breeze. We needed an experienced ASP.NET MVC architect to guide the development of our start-up app, and Toptal had three great candidates for us in less than a week. After making our selection, the engineer was online immediately and hit the ground running. It was so much faster and easier than having to discover and vet candidates ourselves.”
Jeff Kelly
Co-Founder @ Concerted Solutions
“We struggled for weeks to find a developer or architect with expertise in a niche API, but to no avail. When we linked up with Toptal, they connected us with the very expert we needed, and a week later we were hard at work making progress! The whole process was very smooth and we ended up with a new feature we couldn't have done without Toptal.”
Thomas Honeyman
COO @ FindMySong
“As an internet marketing company specializing in pay-per-click management, our clients frequently ask us to provide services that fall outside the scope of our primary business. We have found Toptal to be exactly the resource we need to connect with contractors so we can deliver our clients top tier web development talent at a reasonable cost.”
Pashmina Lalchandani
Owner @ Flowsimple
“Chris is an absolutely exceptional Python developer, and the single most efficient programmer I've ever worked with. From the beginning of the project, Chris was instantly a vital member of the team. He's proactive, self-managed, knowledgeable, and efficient. I point him in a direction, and he delivers. Chris will be a part of the Crisis Cleanup team as long as I have anything to say about it.”
Aaron Titus
Project Manager @ Crisis Cleanup
“Toptal developers deliver. Hiring my first developer on Toptal was such a pleasant experience that I quickly turned around and hired another. Every developer I've hired on Toptal has been professional, skilled, and self-managing—a pleasant departure from the typical freelancer marketplace.”
Mike Riess
Owner @ RiessGroup
“It has been wonderful to work with Fabian for the past two years. He is an expert in JavaScript development and has built our embeddable widget and video player. He is a quick study and is able to learn how to integrate new technologies, which is so critical for a startup. He even took the extra effort to teach others on the team. He is super responsive and often went above and beyond to help us meet deadlines (including working on weekends). Thank you Fabian. Thank you Toptal for making it so easy to find and work with amazing talent.”
Natasha Mohanty
CTO @ FEM Inc