
Hire the Top 3% of GIS Developers in 48 Hours
Hire vetted GIS developers, engineers, programmers, coders, architects, and consultants on demand. Leading companies choose GIS freelancers from Toptal for their most important development projects.
Toptal's work was a crucial milestone that enabled us to scale our engineering teams and systems in step with our rapid growth.
Mark Marcantano, Calm
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Featured Talent

Daniel Demonceau
GIS Developer
A full-stack developer with over 15 years of experience, Daniel specializes in architecting end-to-end geographic information systems (GIS). His expertise spans database design, REST API development, ETL scripting, and back-end optimization, all while crafting intuitive React front ends. He's also a respected voice in the GIS community, sharing insights and solutions on his widely followed technical blog.

Mark Heslop
GIS Developer
Mark has been working with GIS for more than 20 years and has a comprehensive knowledge of all aspects of spatial data management, analysis, visualization, and interaction. He has a strong ability to quickly understand client requirements and translate them into reliable, functional, and successful GI systems, utilizing out-of-the-box tools for customizations or building stand-alone desktop, server, or cloud applications where appropriate.

Denis Volk
GIS Developer
Denis is a senior full-stack AI engineer and data scientist with a PhD in mathematics and a specific focus on AI reliability and security. He's an expert in deploying modern generative AI in production end-to-end, and his skills include AI agents, ML, MLOps, big data, data analytics, and cloud infrastructure. Denis's previous industry experience spans probabilistic risk modeling, forecasting, computer vision, and team leadership across education, retail, manufacturing, and talent sourcing.

Pedro Roquette
GIS Developer
Pedro is a software engineer with extensive experience in building scalable software solutions based on .NET and JavaScript architecture. He led and developed a number of systems ranging from management web applications to mobile apps, IoT, and GIS through the years. Pedro enjoys developing heavy-data processing and analytics systems, as well as designing and implementing algorithms to support them.

Víctor González
GIS Developer
Víctor has been working with GIS software for more than 15 years. He has worked on various projects, from driving and developing mainly geospatial components at Xarvio to leading the development and training of a dissemination platform for FAO or developing websites with the latest technology. Along that ride, Víctor has adapted to working in teams ranging from one or two people to dozens, organizing across different subteams, and being productive while working with different technologies.

Peter Daniels
GIS Developer
Peter is a seasoned data platform expert specializing in the Microsoft stack, including Azure. With skills ranging from data architecture and engineering to database administration and development, his 29 years of experience, multiple certifications, and passion for learning set him apart in addressing clients' diverse data requirements. Most recently, Peter helped a growing company migrate their on-premise data and AI estate into Azure as part of an ERP migration to Microsoft Dynamics 365.

Martín Levy Daniel
GIS Developer
Martín is a versatile data scientist interested in challenging projects. He has worked on numerous projects throughout his professional career in different fields such as finance, market research, technology, and, currently, in GIS and emergency management. Martín stands out for his high adaptability, problem-solving skills, and communication of solutions in business environments.

Fabrice Triboix
GIS Developer
Fabrice is a DevOps engineer with eight years of experience with AWS and six years with both Kubernetes and Terraform. He is very keen on automation (CI/CD, infrastructure as code) and solving complex problems with simple solutions. He worked for clients such as NatWest Bank, Cisco, Topps, the UK Home Office, medium-sized companies, and many startups. His greatest joy is to see his work actually being used in production and making a positive impact on his clients' businesses.

Onur Canci
GIS Developer
Onur is a qualified full-stack developer with 12+ years of experience, specializing in Java and JavaScript. He focuses on multithreaded, networked, and desktop and multi-layered web applications enabled by the geographic information system (GIS). Onur has built ground-control station applications for various unmanned aerial vehicles (UAVs), including live video, telemetry, and intelligence-sharing platforms for defense projects.

Tim Sheerman-Chase
GIS Developer
Tim is a software engineer with experience in a wide range of industries, technologies, and academia. His primary programming languages are C++ and Python. He is adept at real-time/multi-threaded systems. Tim also has a degree in physics and a PhD in machine learning/image processing.

Ibrahim Mahmoud Ahmed, Ph.D.
GIS Developer
Ibrahim is a veteran data scientist and software developer with a passion for deep learning and extensive experience in statistics and time series. Ibrahim is interested in helping businesses take full advantage of their data and take data-driven actions. His principle is to observe, model, and corroborate, disrupting the status quo with artificial intelligence.

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Why Organizations Choose Toptal®

Toptal gave us access to the best designers out there, saving us a lot of time and allowing us to build the best possible product.
Thierry JakircevicGeneral Manager, Digital Solutions, Bridgestone

Toptal’s talent is really excellent. They are able to work through large business problems and code incredibly efficiently.
Emily LemonSenior Director, Cleveland Cavaliers

The kind of people we looked for were hard to find. Toptal helped us achieve our goals by bringing high quality resources to bear on very short notice.
Elmar PlatzerDigital Transformation Leader, CSR

If you’ve tried working with other vendors, Toptal is going to be a different type of company to work with; they’re going to meet you where your needs are.
Matthew SchumacherSenior Product Manager, Alpha - Precision Drilling
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