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

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

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

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

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

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

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

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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Testimonials
“I'm incredibly impressed with the caliber of the Toptal developers I have worked with - they have proven themselves to be both dedicated and highly talented. We will most definitely continue to work with Toptal. ”
Savannah de Savary
Founder @ Industry Hub
“Toptal provides a great service: Within a week of posting my job, I was matched with my developer and ended up completing the entire project with him. I'll continue to use Toptal in the future for any new development work I may need.”
Mike Jones
CEO @ DigitalDripped
“Toptal has been extremely helpful to us in finding top remote talent. The ratio from interview to hire with Toptal candidates is the highest I've ever experienced in my professional career.”
Philipp Berner
Co-founder and CTO @ KeepSafe
“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
“We needed a programmer to help push a project over the finish line, and I figured -- best case -- Toptal would find someone who would come in and complete a few tickets. Instead, Sergio blended right in with the team and made significant progress after mere days of ramp-up. He even offered to take his laptop with him on vacation in case we had a customer issue with his code! He surpassed my expectations, and then some.”
Bryan Adams
CTO @ Healthsense
“I really enjoyed my experience with Toptal. Searching for a developer was both painless and engaging, and the first match was a perfect fit! Toptal is a fantastic way to find talented developers for small or large aspects of your project.”
Willem Shepherd
Creative Director @ Mookieyams
“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
“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
“We've used Toptal developers multiple times for multiple projects, and they've always been world-class—regardless of whether they've been from South Africa, Brazil, or the United States.”
Alex Haro
CEO @ Life360
“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
“John has been so great to work with! He has met all our requirements, done a speedy job with excellence, and has completed everything we’ve asked him to. Working with him has been a great experience.”
Jenny Lord
Communications Project Manager @ Lake Pointe Church
“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
“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.

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VP of Talent Operations