Hire the best API developers near Philadelphia.

Toptal is a marketplace for top remote API developers, engineers, programmers, coders, architects, and consultants. Top companies and start-ups in Philadelphia choose Toptal API freelancers for their mission critical software projects.
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Hire remote API Developers near Philadelphia or in a similar time zone

Darley Stephen

Freelance API Developer at Toptal since May 2, 2016
Darley is a developer and architect with more than 18 years of experience in information technology including Java, PHP, C#, Oracle, Salesforce, and more. With his experience in varied technologies and industries, he can assure that his quality of work will be the best. Click to continue

B. Quincy Cabell

Freelance API Developer at Toptal since July 2, 2014
For 15 years, Quincy has been principal architect and developer of front-end and back-end web, desktop, and mobile software. His specialties include prototyping, leading teams within startup ventures, and delivering high performance and high reliability code. Click to continue

Omar Pera Mira

Freelance API Developer at Toptal since October 8, 2015
Over the past four years, Omar has launched more than 10 Android applications, 4 of which have over a million users each. He's got a Top Developer badge by Google in Google Play. Lately he's consulted for chat bots, and curates the leading newsletter in the space. Previously, he led the back-end and front-end teams at Pixable in NYC (acquired for $30M), and worked as a back-end engineer at CERN (known for the LHC particle accelerator). Click to continue

Jonathan Rhone

Freelance API Developer at Toptal since January 3, 2014
Jonathan is a full stack engineer who's as comfortable working on large-scale distributed systems as he is on client-facing single-page web apps. Jon also excels at working with big data, and has frequently worked on a petabyte scale. Click to continue

Max Simon

Freelance API Developer at Toptal since July 6, 2015
Max is a developer with more than 5 years of experience creating Android apps. He has developed more than 15 apps to date, with an average rating between 4 and 5 stars in the Play Store. Max is passionate about new technologies and always ready for new challenges and discoveries. Click to continue

Daniel Nakhla

Freelance API Developer at Toptal since May 7, 2014
Daniel is a back-end and JavaScript web developer with a decade of professional experience, based in New York City. He has a Bachelor of Science degree in Computer Science with a minor in Business, which provides him with the context necessary to understand the nexus between business and technology needs. Click to continue

Etienne de Boursetty

Freelance API Developer at Toptal since April 10, 2016
Etienne has been working in the financial industry for 10 years, building models and market analysis tools for traders at world class financial institutions and hedge funds. Working primarily in C#, he has designed and developed large scale data analysis platforms that allowed business-focused team members to quickly crunch vast quantities of numbers efficiently. Click to continue

Gary Wong

Freelance API Developer at Toptal since November 16, 2015
Gary is a self-motivated and detail-oriented software engineer with work experience in various programming languages, libraries, and frameworks. His principal interests are in computer-human interaction, algorithm analysis, domain driven design, and distributed systems design. He loves working on innovative products that meaningfully impacts people's lives. Click to continue

Carlos Ramirez III

Freelance API Developer at Toptal since October 29, 2014
Carlos is a professional software engineer and web developer specializing in the Ruby on Rails framework. He has worked with tech companies in New York's Silicon Alley for over five years, helping to build technology-based businesses from the ground up. He has a Bachelor's degree in Computer Science from Williams College and has been in the software industry for nearly ten years. Click to continue

Mukesh Agrawal

Freelance API Developer at Toptal since March 17, 2014
Mukesh has more than 12 years of software development and design experience (mostly with Microsoft technology stack), and a proven ability to develop efficient, scalable and fault-tolerant solutions to complex problems. He has extensive experience with all phases of the software development cycle. Click to continue
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“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
“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
“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
“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
“I needed help, and fast. I did not want to hire a random coder I met online- I was worried about security, and many other issues. Toptal was there when I needed them- and has been fantastic to work with. Outsourcing is full of terrible stories- Toptal is the story that is the giant exception. I give them my highest recommendation.”
Michael Feder
Founder & CEO @ PrayerSpark
“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
“We have been incredibly happy with our Toptal experience. Initially a skeptic, the process to find and recruit a fabulous iOS developer was very easy. Rather than sifting through hundreds of CVs, we saw two and hired them. They have worked effectively, getting up to speed incredibly quickly and have almost become part of the team. We would definitely use Toptal again. ”
James O'Day
Co-Founder @ Pearlshare
“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
“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
“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
“FundedByMe needed to quickly scale our development team to create the equity crowdfunding leg of our operation. Working with a small budget, we couldn't spend time on vetting candidates, so we turned to Toptal. They identified a stellar developer that truly set the bar when it came to delivering product.”
Arno Smit
CTO @ FundedByMe.com
“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
“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
“Always incredibly responsive, prompt, and flexible, Anna has done an outstanding job -- her work is exactly what we needed. Toptal has been a great experience for us due to the ease of getting a project going with quality talent at a cost that fits our budget. The automated online system for managing everything during onboarding was also impressive.”
Cody Wilke
Product Manager @ Crucial Life Sciences Data Solutions
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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