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Hire system security developers

Zoran Žunko, Croatia

Member since November 2, 2013
Zoran is a veteran software engineer with over 10 years of professional experience. He has worked in various roles in different environments, ranging from R&D to business consultancy (BCM and PCI-DSS). He likes creating software and all of the related challenges. He is an amateur water polo player. Click to continue

Austin Story, United States

Member since May 27, 2014
Austin is a top developer with experience in successful entrepreneurial endeavors and development operations. He excels with Ruby on Rails and JavaScript, and is also strong with a wide range of other technologies. He is an efficient and motivated developer. Click to continue

Matija Krajnik, Croatia

Member since March 13, 2014
Matija is a software tester, eager to learn more about testing techniques and technologies. He is especially interested in security testing. Click to continue

Gergely Kalman, Hungary

Member since July 5, 2012
With a background in IT-Security, Gergely has worked as lead developer for an Alexa Top 50 website serving several million unique visitors each month. He is a diligent and motivated worker who likes to dive in and get things done. Click to continue

Rogelio Nicolas Mengual, Argentina

Member since November 19, 2012
Rogelio is a versatile, positive, and self-motivated full-stack engineer with over twelve years of work experience in many programming languages, frameworks, and platforms. He enjoys taking on new challenges and constantly strives to learn new skills. Click to continue

Karlo Smid, Croatia

Member since May 10, 2013
Karlo is a senior test engineer with skills in test automation, team leadership, and documentation. As a software tester he likes to break stuff that others think works. As a team leader he has proven abilities allowing him to build teams from scratch and streamline the QA process to perfection. Click to continue
system security developers
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Testimonials
“We have been with Toptal for over two years and have hired through them multiple times. They've never failed to deliver with world-class talent and customer service and have been our first choice when scaling our team.”
Stuart Reavley
Product Lead @ ClassDojo
“Andrea is doing an amazing job. I don't think we could have gotten a better person. He is fun to work with, he thinks out of the box, and he is extremely knowledgeable in what he is going. He not only does an excellent job, he also helps our company to differentiate our business model further (e.g. making our app offline-capable). I would recommend Andrea as well as Toptal any time to any friend.”
Pascal Girardat
Co-Founder / CEO @ Lifestage Solutions AG
“Finding a good developer who specialised in the technologies we use seemed like an impossible task... until we used Toptal. We had several trial periods and have just accepted our first developer to join the team! The whole process went seamlessly and without any surprises or hidden costs. We are very happy and will continue to work together!”
Artem Tolmachev
CEO @ eKids.nl
“Working with Toptal has been a great experience. Prior to using them, I had spent quite some time interviewing other freelancers and wasn't finding what I needed. After engaging with Toptal, they matched me up with the perfect developer in a matter of days. The developer I'm working with not only delivers quality code, but he also makes suggestions on things that I hadn't thought of. It's clear to me that Amaury knows what he is doing. Highly recommended!”
George Cheng
CEO @ Bulavard, Inc.
“We're a small firm with big dreams. After trying 4 or 5 local or outsourced developers, we were out of options. I'd heard of Toptal, but was worried that my company wasn't big enough for them. After calling them up, I found out that I didn't need to meet any minimum budget and was immediately put in touch with a developer to talk through my problems and goals. A day later, he got back to me with a list of possible solutions. After 9 months and 5 developers, Toptal got me my solution in a single week at a price I could afford.”
Kevin Ramirez
Co-Founder @ SixtyVocab.com
“We recently launched our app with the help of Toptal and Nikola, an iOS developer. I was immediately impressed with the constant communication, detail, and level of talent that Nikola brought to the table. More importantly, when the project was underway, Nikola proactively provided creative workarounds for unforeseen hurdles and challenges. I couldn't be happier with our engagement and would highly recommend Nikola and Toptal.”
Chip O'Toole
Founder @ Humans Helping Robots LLC
“We needed a talented developer and we needed him/her very quickly. So we turned to Toptal and couldn't be happier with the results! Our Toptal freelancer has contributed extraordinary knowledge, talent, and startup experience to our team. We will continue to work with Toptal to fulfill our future talent needs.”
Lindsay Fairman
Founder & Owner @ FairTech Labs, LLC
“The Toptal process was very organized, personable, and professional. They get to know you and your project idea, and then quickly provide you with several of the world's best developers, who will work hard to achieve your vision. I found a great developer in only a few days and was able to turn my idea into a functional product.”
Ben Woratyla
CEO @ Book Swap
“Toptal makes finding a candidate extremely easy and gives you peace-of-mind that they have the skills to deliver. I would definitely recommend their services to anyone looking for highly-skilled developers.”
Michael Gluckman
Data Manager @ Mxit
“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 @ K Dunn & Associates
“We really enjoy working with Toptal. The experience has been very positive, and we'd recommend it to anyone seeking developers on-demand.”
Jeff Kerr
CEO @ CaseFleet
“My experience with Toptal has exceeded expectations. I needed to quickly find a front-end developer, and the first person they recommended was a perfect fit. A month later, I needed an iOS developer and they delivered again. I'm incredibly impressed with the quality of the people in Toptal's network and how quickly I was able to find a match for my needs.”
Bruno De Martino
Head of Product @ Token
“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
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My team is going to personally help you find the best candidate to join your team.

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VP of Talent Operations