Hire the Top 3% of Freelance GeoJSON Developers

Toptal is a marketplace for dedicated GeoJSON developers, engineers, programmers, coders, architects, and consultants. Top companies and startups choose Toptal GeoJSON freelancers for their mission-critical development projects.

No-Risk Trial, Pay Only If Satisfied.

Hire Freelance GeoJSON Developers and Engineers

Lavi Yatziv

Freelance GeoJSON Developer
CanadaToptal Member Since October 13, 2014

Lavi is a world-class front-end developer with experience working for enterprise-class organizations like Webflow, Lufthansa, and Okta. He takes great care in delivering the best possible solutions while considering time constraints. His education in motion graphics animation affords an expansive UI vocabulary for end users. Debugging and improving the functionality of legacy code is one of Lavi's specialties, making him a versatile and innovative software engineer.

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Yiğit Akkök

Freelance GeoJSON Developer
TurkeyToptal Member Since January 10, 2022

Yiğit has been a software developer for 20 years, specializing in C++ to build large, complex training simulators related to air traffic control radar and other domains for aerospace and defense. In addition to developing many simulations, prototypes, and novel systems from the ground up, he has customized and added features to existing systems. Yiğit creates value in software development projects by leveraging his broad hands-on experience and versatility.

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Jitesh Kusalkar

Freelance GeoJSON Developer
NetherlandsToptal Member Since October 7, 2020

Jitesh is a professional front-end engineer and a UI team lead with six years of experience building web applications using JavaScript frameworks. He ensures a smooth user experience with a simple and effective solution. He is proficient in React/Redux, JavaScript, TypeScript, HTML, and CSS. His primary focus is on designing simple yet scalable architecture and performance optimization. Jitesh is passionate about learning and spreads knowledge through his technical blogs.

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JoyAnne Foster

Freelance GeoJSON Developer
United StatesToptal Member Since March 26, 2018

JoyAnne is a software engineer with 20+ years experience. She has developed and managed the full life-cycle of multi-tier full-stack applications. She's self-motivated and has extensive experience on front-end UI work, server code, and back-end DB management, but her love is JavaEE application development.

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Andrii Naidenko

Freelance GeoJSON Developer
PolandToptal Member Since August 26, 2019

Andrii is a Microsoft-certified full-stack developer with a master's degree in computer science. He has 15 years of industry experience delivering top-notch web, mobile, and hybrid software solutions through the application of Node.js and Angular technologies. Andrii completes successful projects by iterating outstanding software architecture, producing test-driven design concepts, and using Agile best practices.

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Siamak Zolghadri

Freelance GeoJSON Developer
AustraliaToptal Member Since September 3, 2022

Siamak is a geospatial engineer with an academic background in geomatics and has experience in the energy, environmental, science, and technology sectors since 1990. Following decades of GIS projects as a developer, technical lead, and solution designer, he has been a solution architect on many complex projects and programs worldwide since 2016.

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Daniel Demonceau

Freelance GeoJSON Developer
AustraliaToptal Member Since September 22, 2022

Daniel has been a professional full-stack developer for more than 12 years and has mainly worked in the GIS field for startups, small companies, enterprise businesses, and as a freelancer. He designed database models and REST APIs, created ETL scripts, optimized back ends, and implemented React front ends. As an avid learner and as a way to give back to the open-source community, Daniel started a technical blog seen by thousands, where he shares step-by-step guides to solve GIS challenges.

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Rowin Kaleb Hernández Fagúndez

Freelance GeoJSON Developer
SpainToptal Member Since September 30, 2022

Rowin is a skilled web developer specializing in reactive frameworks. He is a results-oriented professional who enjoys coaching and supporting people to achieve product goals and delivering top-quality user experiences. Rowin thrives on supportive teams and engaging in exciting challenges.

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Luis Fagundes

Freelance GeoJSON Developer
BrazilToptal Member Since June 4, 2018

Luis is a full-stack developer with a career that spans over two decades. He's worked in a number of roles as a developer, sysadmin, manager, business analyst, and entrepreneur. These experiences make him capable of keeping a business mindset while in complete control of the technology stack. By combining vast experience in several fields with solid engineering skills, Luis is an excellent choice for greenfield projects.

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Rodolfo Wilhelmy

Freelance GeoJSON Developer
MexicoToptal Member Since November 5, 2021

Rodolfo is a senior software engineer with more than 10 years of experience in engineering and management roles across different public, private, and nonprofit industries. He specializes in designing and building solutions across the software stack with solid software engineering principles, including full-stack systems, data pipelines, and novel algorithms using discrete optimization techniques. In the past, Rodolfo also held several roles in data engineering and analysis.

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Nadim Rafehi

Freelance GeoJSON Developer
AustraliaToptal Member Since March 31, 2021

Nadim is a self-motivated individual who brings more than a decade's experience as a full-stack software engineer. He is an all-rounder who has experience ranging from web development using the latest web frameworks, building high-scale back-end systems, optimizing SQL queries, implementing automated CI/CD processes, and building out robust cloud architecture using infrastructure-as-code. He enjoys working closely with other talented product managers, designers, and engineers.

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Discover More GeoJSON Developers in the Toptal Network

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Toptal in the press

... 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
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


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


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


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


How to Hire GeoJSON Developers Through Toptal


Talk to One of Our Industry Experts

A Toptal director of engineering will work with you to understand your goals, technical needs, and team dynamics.

Work With Hand-Selected Talent

Within days, we'll introduce you to the right GeoJSON developer for your project. Average time to match is under 24 hours.

The Right Fit, Guaranteed

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


  • How are Toptal GeoJSON developers different?

    At Toptal, we thoroughly screen our GeoJSON developers to ensure we only match you with talent of the highest caliber. Of the more than 200,000 people who apply to join the Toptal network each year, fewer than 3% make the cut. You’ll work with engineering experts (never generalized recruiters or HR reps) to understand your goals, technical needs, and team dynamics. The end result: expert vetted talent from our network, custom matched to fit your business needs.

  • Can I hire GeoJSON developers in less than 48 hours through Toptal?

    Depending on availability and how fast you can progress, you could start working with a GeoJSON developer within 48 hours of signing up.

  • What is the no-risk trial period for Toptal GeoJSON developers?

    We make sure that each engagement between you and your GeoJSON developer 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 GeoJSON Developers Are in High Demand.

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