Hire the top 3% of freelance
CSLA developers.

Toptal is a marketplace for top CSLA developers, engineers, programmers, coders, architects, and consultants. Top companies and start-ups choose Toptal CSLA freelancers for their mission critical software projects.
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Hire CSLA developers and engineers

Dmitry Gordeev, Russia

Member since August 20, 2014
Dmitry is a skilled software engineer with a strong mathematical background and experience on the .NET platform. His greatest passion is to transform mathematical theories into working software. Click to continue

Matthew D. Groves, United States

Member since July 10, 2014
Matthew is an experienced, knowledgeable, and enthusiastic developer. He has experience in enterprise development, product development, and consulting. He is also deeply involved in the development community, serving as a user group organizer, conference organizer, and regular conference speaker. Click to continue

Ernest Smith, South Africa

Member since April 9, 2015
Ernest began his career as a computer operator, but then transitioned to a programmer and finally a systems analyst. Using his evolving skill set, he started his own fraud prevention software company with two friends. Ernest also has experience in stock trading and IT. Click to continue

Vedran Skarica, Croatia

Member since July 28, 2015
Vedran is a skilled engineer with eleven years of experience in general software development, six years of experience in focused software product development, and four years of experience in Unity3D development. He works well both solo and in teams of any size. Click to continue

Nilesh Chaudhari, India

Member since October 2, 2012
Nilesh is a skilled developer with 8 years of experience in .NET Programming and proven ability to develop in a highly demanding and professional environment. He boasts solid expertise in all phases of the application development life cycle. He works hard to support the team in problem-solving and training. Click to continue

Maxim Arshinov, Russia

Member since June 13, 2013
Maxim is a seasoned software developer and has been a team member or team leader on numerous successful projects. He excels in both back-end and front-end development, as well as test automation. He is an expert with JavaScript and C#, and has often created website back-end features from scratch. Click to continue

Herberth Amaral, Brazil

Member since October 6, 2011
Herberth is an excellent developer and has tremendous experience working with large datasets. Herberth actively contributed to the success of several startup companies to attain their goals. He looks forward for a real challenge, where his skills will be put to the test. Click to continue

Aleksander Kowalczyk, Poland

Member since November 6, 2014
Aleksander is a Senior .NET developer with experience in software architecture design and analysis, project management, and team leadership. Thanks to the variety of industry sectors and roles in his background, he has the ability to learn quickly and to manage unexpected obstacles. Click to continue

Vitaly Knyazev, Russia

Member since August 8, 2013
He has extensive experience and skills in web development and the .NET technology stack, and has successfully worked on group projects in positions ranging from programmer to group lead. Click to continue
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“Despite accelerating demand for coders, Toptal prides itself on almost Ivy League-level vetting.”
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“Toptal allows corporations to quickly assemble teams that have the right skills for specific projects.”
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Testimonials
“Toptal has helped my business tremendously by finding, vetting, and recruiting the talent I need, at the right time. I’d definitely recommend it to others.”
Xavier Xicay
CEO & Creative Director @ Tuatara Corp
“Dario was recently assigned to our company in order to help with PHP and JW Video player refinements. He listens extremely well and offers common sense suggestions that save both time and money. He speeds up the process by asking great questions, and he just delivered our first project on time. His redesigned player offers a very pleasing appearance and delivers functions that are both elegant and intuitive.”
Dennis B. Jacobs
President @ College TV Ticket
“With Toptal, we are able to find talented developers in a matter of weeks instead of months. The quality of talent they supply is extremely high as the developers are able to immediately onboard and ramp incredibly fast.”
Zac Carman
CEO @ ConsumerAffairs
“I’m a big believer in the saying, ‘hire smart, or manage tough’. For us non-hackers, Toptal takes the guesswork out of hiring. Their coders are vetted, and the work is guaranteed. Why look anywhere else?”
Greg Archbald
Founder & CEO @ Greasebook
“My business relationship with Toptal has been nothing short of terrific. From reviewing my project with their team to choosing a highly-talented developer, and all the way through releasing our application, it has been an incredibly smooth and successful experience.”
Gary Craig
Senior Analyst @ NetApp
“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
“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
“We've been very pleased with our experience working with Toptal. Their team was incredibly helpful in helping us find the perfect developer for our project. The work was stellar, the communication was excellent and we couldn't have been happier with the overall experience. We're excited to work with Toptal for more projects in the future!”
Ryan Walker
Director, Product Management @ Rand McNally
“With the pressure on and millions watching the Cleveland Cavaliers during the NBA Playoffs, Toptal delivered the talent and expertise needed to launch a brand new fan engagement platform.”
Conor Kenney
Director of Professional Services @ Cleveland Cavaliers
“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
“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
“I struggled for weeks with a Youtube API-specific problem and couldn't find anyone to solve it. Toptal immediately identified the right consultant who took the time to investigate the issue and resolve it quickly. The process was seamless and I will continue to use Toptal with any other issues that arise.”
Rohit Gupta
CEO @ Bollyshake
“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
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My team is going to personally help you find the best candidate to join your team.

Alvaro Oliveira
VP of Talent Operations