Hire the Top 3% of Freelance JSON Experts

Toptal is a marketplace for top JSON experts. Top companies and startups choose Toptal JSON freelancers for their mission-critical software projects.

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Clients rate Toptal JSON experts 4.9 / 5 on average based on 7,045 reviews.
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Hire Freelance JSON Experts

Roberto Neira

Freelance JSON Expert
Verified Expert in Engineering
UTC-08:00
United States
Toptal Member Since August 22, 2016

As an experienced senior iOS engineer, Roberto is passionate about building reliable, high-quality experiences. With 13 years under his belt, he writes elegant, maintainable code that powers thriving products for millions of users. He is enthusiastic about process improvement by implementing best practices, mentoring junior engineers, and ensuring teams and apps excel in the long run.

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Element Green

Freelance JSON Expert
Verified Expert in Engineering
UTC-07:00
United States
Toptal Member Since April 21, 2021

Element has over 18 years of software development experience, including Linux and embedded systems, as well as a wide range of other technical and creative skills: SQL, VHDL on FPGAs, schematic capture, PCB layout, website development, Django, 3D CAD, GUI development, Android development, and more. Element's particular strengths are with C and Python. Element is highly self-motivated, enjoys learning new tech, has exemplary communications skills, and prides himself on delivering quality work.

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Ken Franklin

Freelance JSON Expert
Verified Expert in Engineering
UTC-05:00
United States
Toptal Member Since July 21, 2016

Ken is a highly motivated and professional developer with 30 years of experience in the production of commercial desktop applications. Over the past seven years, he has focused on iOS apps, Apple Watch, and Apple TV. He's been the sole engineer on over 25 commercial-quality apps. He delivers.

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Peter DeWeese

Freelance JSON Expert
Verified Expert in Engineering
UTC-05:00
United States
Toptal Member Since April 26, 2022

Peter is a software engineer with more than 20 years of experience. He currently specializes in Ruby on Rails and iOS development and technical leadership. He has developed solutions for finance, healthcare, government, DoD, education, media, and other industries and has many successful websites, integrations, and apps in the wild.

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Andreas Fruth

Freelance JSON Expert
Verified Expert in Engineering
UTC+01:00
Austria
Toptal Member Since October 31, 2018

Andreas was the marketing manager of a well-established software company then he began a PhD program which led him to programming. He is now a full-stack JavaScript developer with a decade of experience and a CTO for a growing startup. Andreas is passionate about JavaScript and specializes in building MVPs using React, Node.js, Meteor, and REST APIs. Having both marketing and development experience, he builds great user-oriented products.

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Petr Shelomovskiy

Freelance JSON Expert
Verified Expert in Engineering
UTC+01:00
Czech Republic
Toptal Member Since March 26, 2018

Petr is a professional .NET developer and IT consultant. He has worked on different projects for the past few years, including high-availability eCommerce solutions and SPA back ends featuring modern architectures and different SDMs. His academic background always helps him to find the best solution available.

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Tato Mchedlishvili

Freelance JSON Expert
Verified Expert in Engineering
UTC+04:00
Georgia
Toptal Member Since October 28, 2022

Tato is a full-stack developer with a decade-long experience working on multiple complex projects from scratch in various domains, from the public sector to transportation and eCommerce. His leadership skills enrich his technical expertise, bringing people together to deliver outstanding results. Tato enjoys challenging tasks and always works wholeheartedly, with a great sense of responsibility.

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Vitaly Fomichev

Freelance JSON Expert
Verified Expert in Engineering
UTC+06:00
Kyrgyzstan
Toptal Member Since March 29, 2023

Vitaly is a senior web application developer with more than two decades of professional experience, working primarily with Ruby on Rails and PostgreSQL. He is comfortable working as a team lead and as an individual contributor. Vitaly loves solving technical challenges, but his main focus is to understand business needs and provide significant value for modern business as a whole. He believes the most amazing thing about modern technologies is how they change our world.

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NG CHEE MENG

Freelance JSON Expert
Verified Expert in Engineering
UTC+08:00
Malaysia
Toptal Member Since May 5, 2022

Chee Meng has 10+ years of experience working in the software industry. He has been a software developer, a team lead, and now a software architect while leading teams and creating 50+ games. He has managed production servers with minimal downtime and has set up best coding practices. Skilled in many technologies like Angular, React, Java Spring Boot, .NET Core, AWS, Kubernetes, microservices, and automated tests, Chee Meng will be a great addition to any team.

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Danilo Domingues

Freelance JSON Expert
Verified Expert in Engineering
UTC+09:00
Japan
Toptal Member Since November 17, 2023

Dan is a Unity developer with over six years of experience in most platforms, having deployed games and apps for PC, console, mobile, AR headsets, and custom platforms. As a Unity Certified Expert, Dan always looks forward to new, exciting projects that will challenge or enhance industry standards and stand the test of time.

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Eduardo Schuelter

Freelance JSON Expert
Verified Expert in Engineering
UTC+12:00
New Zealand
Toptal Member Since April 28, 2020

With 20 years of hands-on experience in software development and integration, Eduardo has taken on roles ranging from software solutions architect to technical project and account manager. He has 15+ certifications, mainly in Microsoft technologies (Azure), as well as Java and SQL. Eduardo is a seasoned software engineer with a deep knowledge of the main cloud providers' capabilities, implementing system integrations using REST APIs and creating solutions while keeping the big picture in mind.

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Toptal's screening and matching process ensures exceptional talent are matched to your precise needs.

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... 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
Elmar Platzer
Leading a digital transformation
Building a cross-platform app to be used worldwide
Building a cross-platform app to be used worldwide
Drilling into real-time data creates an industry game changer
Drilling into real-time data creates an industry game changer
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 JSON Experts 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 JSON expert for your project. Average time to match is under 24 hours.
3

The Right Fit, Guaranteed

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

Find Experts With Related Skills

Access a vast pool of skilled developers in our talent network and hire the top 3% within just 48 hours.

FAQs

  • How quickly can you hire with Toptal?

    Typically, you can hire a JSON expert 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 JSON expert, 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 JSON expert, 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 JSON experts for your project.

  • At Toptal, we thoroughly screen our JSON experts 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 with Toptal, you’ll always work with world-class, custom-matched JSON experts ready to help you achieve your goals.

  • You can hire JSON experts 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 JSON experts can fully integrate into your existing team for a seamless working experience.

  • We make sure that each engagement between you and your JSON expert 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 JSON Experts Are in High Demand.

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