Hire the Top 3% of Freelance Computer Science Developers

Toptal is a marketplace for dedicated Computer Science developers, engineers, programmers, coders, architects, and consultants. Top companies and startups choose Toptal Computer Science freelancers for their mission-critical Computer Science development projects.

No-Risk Trial, Pay Only If Satisfied.

Hire Freelance Computer Science Developers and Engineers

Tamás Orosz

Freelance Computer Science Developer

HungaryToptal Member Since December 1, 2020

Tamás is a senior C++ developer with decades of experience with various projects. He created world-class CAD systems on Windows, railway control systems on Unix, and many more. His programs run at the Italian Railways, log home companies in the US, and many architects' computers, including builders of Burj Khalifa tower and many civil engineers in Luxemburg.

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Roman Vlasov

Freelance Computer Science Developer

United StatesToptal Member Since December 8, 2020

Roman has 12 years of international experience in 3D and VR software development and a PhD in computer science. He has led and worked on projects of all sizes, from scoping requirements to launch, focusing mainly on VR/AR, complex algorithms, CAD, haptics, and computer vision. With expertise in various languages and platforms, including C++, Java, and C#, Roman has designed and developed cutting-edge products, including VR arcade games, facial recognition, and advanced medical imaging.

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Jesper Kristensen

Freelance Computer Science Developer

United StatesToptal Member Since September 19, 2022

Jesper loves solving problems and helping develop next-generation engineering systems. He is motivated by a deep drive to create excellent solutions and aims to be challenged while moving companies forward. Jesper enjoys working on a budget and delivering on strict time restrictions—it's challenging and exciting.

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Conor Sweeney

Freelance Computer Science Developer

United StatesToptal Member Since May 31, 2021

Conor is an experienced iOS software engineer and doctoral candidate in computer science, focusing on the intersection of machine learning and software systems. Notable clients include NBC, Google, Amazon, CNBC, Bravo, and E!. He developed an app where users can schedule food pick-ups to local homeless shelters and soup kitchens, track the status of volunteers, and send real-time updates. What separates Conor from the average software engineer is his creative solutions to complex problems.

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Brendan Ritter

Freelance Computer Science Developer

United StatesToptal Member Since November 11, 2021

Brendan has spent the last five years working as a full-stack engineer at Raytheon BBN, developing pathfinding and scheduling applications for several clients, including the US Air Force and Pentagon. With a bachelor's degree in computer science at Olin College of Engineering and a master's degree in computer science at Cornell University, Brendan is interested in freelancing because he is willing to learn and work in many different domains while contributing to challenging technical projects.

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Shanshan Wang

Freelance Computer Science Developer

United StatesToptal Member Since June 3, 2022

Shanshan is a data scientist and machine learning engineer with versatile technical skills and a proven track record of effective project and team leadership. Her expertise includes machine learning, process simulation, optimization, end-to-end development, and deployment on cloud infrastructure like AWS.

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Florian Bolgar

Freelance Computer Science Developer

FranceToptal Member Since April 1, 2020

Since he was 11 years old, Florian has been programming, and this has become second nature for him. In particular, during his studies in mathematics, physics, and computer science at the prestigious Grande École in France (E.N.S. Ulm), and the four subsequent years as a teacher and a developer, he learned to master parallelization and low-level programming in C, Fortran, and Python. Florian is very versatile, quick to learn, and a very efficient programmer.

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Nimrod Talmon

Freelance Computer Science Developer

IsraelToptal Member Since June 28, 2021

Nimrod is a researcher, consultant, and developer with 12 years of experience and expertise in software architecture and development, mathematical modeling, and algorithm development, in fields such as mathematical optimization, AI, algorithmic game theory, and operations research. Early in his career, Nimrod was a software engineer and tech team lead at Google, and he holds a PhD in computer science. From a polymath perspective, his EBS numbers are Erdös 3, Sabbath 7, and, arguably, Bacon 6.

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Stefan Fischer

Freelance Computer Science Developer

South KoreaToptal Member Since September 1, 2021

Stefan is an experienced C# and .NET developer and software architect, mainly focusing on back-end application services, yet having a broad range of professionally proven skills at hand to deliver end-to-end assistance on complex and challenging projects. He's also mastered various out-of-band skills in several fields of knowledge such as electronic design, 2D and 3D CAD construction, 3D printing, and manufacturing methods that help him quickly get to the idea of customer's specific needs.

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Jakob Vukalovic

Freelance Computer Science Developer

CroatiaToptal Member Since January 26, 2021

Jakob is a software engineer with a master’s degree in computing from the University of Zagreb, specializing in computer engineering. He has significant experience in cross-platform software development, primarily utilizing Python and C/C++ in his projects.

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Thomas Wuillemin

Freelance Computer Science Developer

CyprusToptal Member Since October 2, 2021

Thomas is a seasoned senior back-end developer and architect. In the past twenty years, he had the opportunity to work in various environments. His experience allows him to offer the most suitable solution matching business requirements, robustness expectations, and stakeholders' timelines. Coming from the Java world, Thomas nonetheless favors a pragmatic approach regarding technical decisions.

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

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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 start up, they are our secret weapon.

Brantley Pace, CEO & Co-Founder

Tripcents

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

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

Radeeus

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

ProHatch

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

Site Specific Software Solutions

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

Sergio was an awesome developer to work with. Top notch, responsive, and got the work done efficiently.

Dennis Baldwin, Chief Technologist and Co-Founder

PriceBlink

Working with Marcin is a joy. He is competent, professional, flexible, and extremely quick to understand what is required and how to implement it.

André Fischer, CTO

POSTIFY

We needed a expert engineer who could start on our project immediately. Simanas exceeded our expectations with his work. Not having to interview and chase down an expert developer was an excellent time-saver and made everyone feel more comfortable with our choice to switch platforms to utilize a more robust language. Toptal made the process easy and convenient. Toptal is now the first place we look for expert-level help.

Derek Minor, Senior VP of Web Development

Networld Media Group

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

We had a great experience with Toptal. They paired us with the perfect developer for our application and made the process very easy. It was also easy to extend beyond the initial time frame, and we were able to keep the same contractor throughout our project. We definitely recommend Toptal for finding high quality talent quickly and seamlessly.

Ryan Morrissey, CTO

Applied Business Technologies, LLC

I'm incredibly impressed with Toptal. Our developer communicates with me every day, and is a very powerful coder. He's a true professional and his work is just excellent. 5 stars for Toptal.

Pietro Casoar, CEO

Ronin Play Pty Ltd

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.

As a Toptal qualified front-end developer, I also run my own consulting practice. When clients come to me for help filling key roles on their team, Toptal is the only place I feel comfortable recommending. Toptal's entire candidate pool is the best of the best. Toptal is the best value for money I've found in nearly half a decade of professional online work.

Ethan Brooks, CTO

Langlotz Patent & Trademark Works, Inc.

In Higgle's early days, we needed the best-in-class developers, at affordable rates, in a timely fashion. Toptal delivered!

Lara Aldag, CEO

Higgle

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

Toptal’s ability to rapidly match our project with the best developers was just superb. The developers have become part of our team, and I’m amazed at the level of professional commitment each of them has demonstrated. For those looking to work remotely with the best engineers, look no further than Toptal.

Laurent Alis, Founder

Livepress

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 needed some short-term work in Scala, and Toptal found us a great developer within 24 hours. This simply would not have been possible via any other platform.

Franco Arda, Co-Founder

WhatAdsWork.com

Toptal offers a no-compromise solution to businesses undergoing rapid development and scale. Every engineer we've contracted through Toptal has quickly integrated into our team and held their work to the highest standard of quality while maintaining blazing development speed.

Greg Kimball, Co-Founder

nifti.com

How to Hire Computer Science Developers 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 Computer Science developer for your project. Average time to match is under 24 hours.
3

The Right Fit, Guaranteed

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

FAQs

  • How are Toptal Computer Science developers different?

    At Toptal, we thoroughly screen our Computer Science developers 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 Computer Science developers in less than 48 hours through Toptal?

    Depending on availability and how fast you can progress, you could start working with a Computer Science developer within 48 hours of signing up.

  • What is the no-risk trial period for Toptal Computer Science developers?

    We make sure that each engagement between you and your Computer Science developer 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 Computer Science Developers are in High Demand.

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