Hire the Top 3% of Freelance Cryptographers

Toptal is a marketplace for dedicated cryptographers. Top companies and startups choose Toptal cryptography freelancers for their mission-critical cryptography development projects.

No-Risk Trial, Pay Only If Satisfied.

Clients rate Toptal cryptographers 4.9 / 5 on average based on 1,458 reviews.
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Find and hire Top Cryptographers worldwide. Simply click on your preferred time zone on the map.

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Hire Freelance Cryptographers

Asma Yasin

Freelance Cryptographer
Verified Expert in Engineering
UTC-08:00
United States
Toptal Member Since August 10, 2021

Asma is a software engineer with five years of experience specializing in web and mobile app development. She's worked on multiple critical and sensitive governmental projects and delivered high-quality apps with 225,000+ users. You can rely on her attention to detail and her ability to stretch and work outside her comfort zone, whatever the project. Asma is passionate about her field and enjoys learning cutting-edge technologies and leveraging them to get the best product possible.

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Matthew Brisebois

Freelance Cryptographer
Verified Expert in Engineering
UTC-07:00
Canada
Toptal Member Since June 13, 2019

Matthew is a seasoned full-stack developer with expertise in web applications, database architecture, and cryptography. His professional experience includes extensive consulting with Fortune 500 companies, as well as in-depth R&D work to find modular, scalable solutions for developing businesses. He is a professional information technology consultant passionate about improving developer tools and advancing industry standards.

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Julie Wetherbee

Freelance Cryptographer
Verified Expert in Engineering
UTC-05:00
United States
Toptal Member Since August 21, 2015

Julie has over 20 years of experience building software applications and leading engineering teams for businesses of all sizes. She has expertise in Java, JavaScript, C, C++, and Perl, and is familiar with many popular frameworks. Recently, Julie designed and implemented a large-scale Oracle database sharding solution for Walmart.com.

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Afonso de Sá Delgado Neto

Freelance Cryptographer
Verified Expert in Engineering
UTC-03:00
Brazil
Toptal Member Since April 26, 2021

Afonso is a software engineer with 3+ years of experience developing end-to-end back-end services. With solid skills in cryptography and machine learning, he has also performed complex data analysis in big data scenarios. Afonso brings a challenge-driven mindset, strong focus, and curiosity to solving real-world problems, using the best practices available.

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Pieter van Beek

Freelance Cryptographer
Verified Expert in Engineering
UTC+00:00
Portugal
Toptal Member Since September 8, 2014

Pieter has 39 years of programming experience, including time spent as a software product manager. He is a challenger, an independent worker, and a team player as circumstances demand, and he boasts expertise and skill in a range of topics, including big data, cryptography, and machine learning.

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Jean-Loïc Mugnier

Freelance Cryptographer
Verified Expert in Engineering
UTC+01:00
France
Toptal Member Since October 7, 2022

Jean-Loïc is an ambitious, passionate French-Brazilian software engineer specializing in cybersecurity and cryptography. He has a background in computer science, an MBA in business management, and professional experience at Accenture, Binance, and BNB Chain, where he was the Web3 cybersecurity team lead and Cybersecurity Working Group coordinator at Campus Cyber and Niftag, a startup he founded.

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Filip Laurentiu

Freelance Cryptographer
Verified Expert in Engineering
UTC+02:00
Romania
Toptal Member Since April 7, 2021

Filip has been a software engineer since 2017, currently specializing in blockchain development. Fascinated by technological advances, he believes that our future needs to be based on trust and that blockchain is the best solution for this kind of future. Filip is excited to bring his expertise to this new revolution, and he thrives in environments that value passion and growth.

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Omer Cerrahoglu

Freelance Cryptographer
Verified Expert in Engineering
UTC+03:00
Turkey
Toptal Member Since August 22, 2022

Omer excels in building complex systems, working on the most critical components of a project, from cryptography to networks, and performance to scalability. He integrated a new cryptographic protocol to support messaging groups of thousands of users, with strong cryptographic guarantees and seamless performance. Omer built a fast serialization, de-serialization algorithm for cryptographic objects. He is a natural-born problem solver with a degree from MIT and a strong background in mathematics.

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Ivan Mamay

Freelance Cryptographer
Verified Expert in Engineering
UTC+03:00
Russia
Toptal Member Since October 18, 2017

Ivan has more than 12 years of development experience within a large company and uses C++ as his primary programming language to create programs using Qt. He has participated in a number of different projects including GUI, server-side, and embedded. As a certified Qt developer, Ivan also has expertise working with most of Qt’s modules including QtSql (SQLite, MySQL).

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Martun Karapetyan

Freelance Cryptographer
Verified Expert in Engineering
UTC+04:00
Armenia
Toptal Member Since September 11, 2017

Martun has over eleven years of experience as a software engineer, mainly working on algorithm-heavy applications with C++. He's worked for notable companies like Google and Mentor Graphics and has successfully delivered several challenging freelance projects. He loves innovating and delivering incredible products with the highest code quality. Martun communicates exceptionally well and does his best to over-deliver on every project.

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Vadim Panov

Freelance Cryptographer
Verified Expert in Engineering
UTC+07:00
Thailand
Toptal Member Since July 13, 2020

Vadim is a software engineer with 15+ years of experience in embedded systems, Unix, networking, and cryptography. He has owned and brought products to market, combining skills in C++, C, Lua, JavaScript, Python, and more. Vadim acquired an EMBA to gain better equilibrium between tech and business challenges.

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Toptal in the press

... allows corporations to quickly assemble teams that have the right skills for specific projects.

Despite accelerating demand for coders, Toptal prides itself on almost Ivy League-level vetting.

Our clients
Creating an app for the game
Conor Kenney
Creating an app for the game
Leading a digital transformation
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Leading a digital transformation
Building a cross-platform app to be used worldwide
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Drilling into real-time data creates an industry game changer
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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 Cryptographers Through Toptal

1

Talk to One of Our Client Advisors

A Toptal client advisor 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 cryptographer for your project. Average time to match is under 24 hours.
3

The Right Fit, Guaranteed

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

FAQs

  • How quickly can you hire with Toptal?

    Typically, you can hire cryptographers with Toptal in about 48 hours. For larger teams of talent or Managed Delivery, timelines may vary. Our talent matchers are highly skilled in the same fields they’re matching in—they’re not recruiters or HR reps. They’ll work with you to understand your goals, technical needs, and team dynamics, and match you with ideal candidates from our vetted global talent network.

    Once you select your cryptographer, you’ll have a no-risk trial period to ensure they’re the perfect fit. Our matching process has a 98% trial-to-hire rate, so you can rest assured that you’re getting the best fit every time.

  • To hire the right cryptographer, it’s important to evaluate a candidate’s experience, technical skills, and communication skills. You’ll also want to consider the fit with your particular industry, company, and project. Toptal’s rigorous screening process ensures that every member of our network has excellent experience and skills, and our team will match you with the perfect cryptographers for your project.

  • At Toptal, we thoroughly screen our cryptographers to ensure we only match you with the highest caliber of talent. Of the more than 200,000 people who apply to join the Toptal network each year, fewer than 3% make the cut.

    In addition to screening for industry-leading expertise, we also assess candidates’ language and interpersonal skills to ensure that you have a smooth working relationship.

    When you hire cryptographers with Toptal, you’ll always work with world-class, custom-matched cryptographers ready to help you achieve your goals.

  • You can hire cryptographers on an hourly, part-time, or full-time basis. Toptal can also manage the entire project from end-to-end with our Managed Delivery offering. Whether you hire an expert for a full- or part-time position, you’ll have the control and flexibility to scale your team up or down as your needs evolve. Our cryptographers can fully integrate into your existing team for a seamless working experience.

  • We make sure that each engagement between you and your cryptographer 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 Talent Only

    Trusted Talent Only

    All of our talent are seasoned professionals 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 Cryptographers Are in High Demand.

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