Hire the top 3% of freelance JSON expert.

Toptal is a marketplace for top JSON expert. Top companies and start-ups choose Toptal JSON freelancers for their mission-critical software projects.

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Hire Freelance JSON Expert

Pere Casafont

Freelance JSON Experts

Pere is a software architect with over a decade of experience working on Java services ranging from custom binary protocols to REST APIs on Spring. He also... has a considerable experience with front-end, ranging from raw C++ OpenGL to Ionic apps. His most remarkable strength is his ability to work on and refactor all kinds of codebases. He is very communicative, proactive, and committed to the projects he works on. 

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Aitizaz Khan

Freelance JSON Experts

Aitizaz is a full-stack engineer with expertise in Ruby on Rails and Java. He is keenly interested in algorithm-level efficiency and has experience working... both with front-end and back-end technologies as well as frameworks. Aitizaz is also a competitive programmer who actively participates in different online challenges. He loves learning about anything, especially if it make him better at his craft. 

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Vadim Dagman

Freelance JSON Experts

Vadim is a seasoned freelance software developer, architect, technical manager, and entrepreneur with over 25 years of professional experience. He has built... many complex world-class software products from start to finish, spanning numerous platforms. He has worked both individually and as a group leader. 

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Rodrigo Donini

Freelance JSON Experts

Rodrigo is a focused developer who produces digital projects for agencies around the world. He has 18 years of experience using various methodologies and te...ch in most web and mobile projects. He has a strong knowledge base of the WordPress world and is very engaged with the community: building custom themes, plugins, and core customizations. He specializes in WordPress, developing for the front-end back-end and in managing digital projects.  

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Tomasz Czura

Freelance JSON Experts

Tomasz is an Android developer who specializes in creating user-friendly and useful applications with the newest technologies. He enjoys experimenting with... different languages and technologies, extending his skill set beyond Android to tasks leveraging React or iOS. Tomasz makes it a personal goal to ensure the client is fully satisfied, and often likens the process of software development to writing a good, interesting novel. 

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Zenel Rrushi

Freelance JSON Experts

Zenel started his developing journey in 2015 where he began by getting the most of various technologies like SQL Server, PHP, jQuery, HTML, and CSS. Later,... he started working as a back-end (PHP) developer and was soon promoted to team lead. During his career, he’s also worked and managed teams of all sizes while using the following frameworks and technologies: Magento (1 & 2), Laravel, Lumen, CodeIgniter, Vue.js, and Fusio PHP framework. 

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Jorge Nicolás Cellerino

Freelance JSON Experts

Jorge has many years of experience working with Java and related frameworks like Spring and Hibernate, lately focused on Agile methodologies for building RE...STful web services for mobile and web applications. Jorge is responsible, proactive, and fast learner, committed to results and well accustomed to working with distributed teams in different time zones.  

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Piotr Dziubinski

Freelance JSON Experts

Piotr is a veteran full-stack developer with over 15 years of experience, mainly focusing on Oracle development. He ie experienced with SQL databases (Oracl...e, MS, MYSQL, and more) as well as big data. He has worked on the front end and back end—developing with Java, Java EE, HTML, CSS, Angular, JavaScript, Oracle, ETL, DWH, Oracle BI, and many others. 

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Vedran Aberle Tokić

Freelance JSON Experts

Vedran is a JavaScript based front-end developer with a broad experience in many areas that always end up going back to what he loves doing most: problem so...lving user interfaces. He's addicted to hearing the reaction, "It can do that!?" 

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Luciano Greiner dos Santos

Freelance JSON Experts

Luciano is a seasoned professional with a decade and a half of experience developing Java enterprise applications. Currently, he's focused on big-data techn...ologies such as Spark, Cassandra, Kafka, and Elasticsearch. He's capable of working as a full-stack engineer, having also worked with JavaScript and AngularJS in the past. Luciano is also fluent in English, has a native level in Portuguese, and has basic Spanish speaking abilities. 

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Patryk Pawłowski

Freelance JSON Experts

Patryk is a seasoned full-stack developer who specializes in all types of modern JavaScript implementations—from architecting the back end and APIs to build...ing pixel-perfect web and mobile apps. Thanks to his experience running his own company and having a background in design, he is a great facilitator between business and product teams. Partryk also enjoys speaking at conferences.  

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Hire JSON Expert Seamlessly with Toptal

1
Talk to One of Our Industry Experts
A Toptal director of engineering will work 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 experts for your project. Average time to match is under 24 hours.
3
The Right Fit, Guaranteed
Work with your new JSON experts for a trial period (pay only if satisfied), ensuring they're the right fit before starting the engagement.

FAQs

  • How are Toptal JSON expert different?

    At Toptal, we thoroughly screen our JSON expert to ensure we only supply experts of the highest caliber. Of the more than 100,000 people who apply to join the Toptal network each year, we accept fewer than 3%. You'll work with engineering experts (never generalized recruiters or HR reps) to understand your goals, technical needs, and team dynamics. The end result: expertly-matched talent from our network, hand-selected to fit your business needs.

  • What is the no-risk trial period for JSON expert?

    We make sure that each engagement between you and your JSON experts 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.

  • How fast can I hire JSON expert through Toptal?

    Depending on availability and how fast you can progress, you could start your no-risk trial with a JSON experts within 48 hours of signing up. Most of our engagements start within 2 weeks of discussing your project with us.

Tap Into World-Class Talent

  • 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

    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

    Hire in under 2 weeks and scale your team up or down as needed, no strings attached.

  • 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

    Choose the engagement type that suits your needs — hourly, part-time, or full-time — with the ability to change anytime.

  • Expert Talent Matching

    Focus on your project and enjoy support from your dedicated account executive and expert talent matcher.

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