Hire the Top 3% of Freelance Data Annotation Specialists

Toptal is a marketplace for dedicated Data Annotation Specialists. Top companies and startups choose Toptal Data Annotation freelancers for their mission-critical Data Annotation development projects.

No-Risk Trial, Pay Only If Satisfied.

Hire Freelance Data Annotation Specialists

Gergely Újvári

Freelance Data Annotation Specialist
HungaryToptal Member Since July 7, 2022

Gergely is a senior full-stack developer with over a decade of experience building robust web applications for quickly changing startup environments and larger clients such as E.ON Energy. He specializes in React and TypeScript for the front-end development, Node.js and Meteor for the back end, Apollo GraphQL, and several database systems, including SQL, MongoDB, and Elasticsearch. Gergely was twice awarded the Codility Golden Award for the Muad'Dibs and the Pair a Coder challenges.

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Philipp Blandfort

Freelance Data Annotation Specialist
GermanyToptal Member Since October 23, 2019

Philipp completed a PhD in Artificial Intelligence and can look back to 4 years of research experience plus two years of freelancing. His work included text analysis, information extraction from text and images, user behavior analysis, and the creation of datasets. He is performant in interdisciplinary teams and is enthusiastic about building AI systems that help us overcome real-world issues and move in new directions.

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Fuad Issa

Freelance Data Annotation Specialist
United KingdomToptal Member Since July 22, 2022

Fuad excels in building machine learning services from prototype to production, leveraging his diverse ML experience to craft rapid prototypes and discover creative uses for models across many domains. With a solid foundation in maths and programming, he stays at the forefront of the latest research, continually enhancing the solutions he provides to clients. Fuad's passion for developing cutting-edge technology solutions makes him a valuable asset to any team seeking to harness the power of ML.

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Philipp Berndt, PhD

Freelance Data Annotation Specialist
GermanyToptal Member Since November 25, 2022

Philipp is an IT consultant and researcher focusing on cloud computing, machine learning, and deep neural networks. After earning his diploma in computer engineering at Technische Universität Berlin, where he covered topics such as artificial intelligence and computer vision, he founded several startups, one of which with 8-digit financing. Philipp mentored students as a research assistant, CTO, and CRO and finished his PhD in data fusion at the Institute for Complex and Distributed IT Systems.

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Oguz Vuruskaner

Freelance Data Annotation Specialist
TurkeyToptal Member Since November 17, 2022

Oguz is a seasoned full-stack developer with over five years of experience. Specializing in MLOps, he's passionate about creating scalable cloud solutions. His innovative spirit is evident in projects like 'Sarama,' a testament to his dedication. Oguz thrives on challenges, consistently pushing technological boundaries to deliver excellence in every endeavor.

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Diogo Dutra

Freelance Data Annotation Specialist
CanadaToptal Member Since October 19, 2020

Diogo is a machine learning engineer with a Master of Science degree in aeronautics and expertise in the whole pipeline from data visualization to model deployment. His 14+ years of international experience in research and development for defense, public safety, and aerospace industries allow him to combine new methodologies, like deep learning and computer vision, with traditional ones (e.g., physics, simulation, sensor fusion, Kalman filter, Fourier transform, and signal processing).

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Patryk Matuszewski

Freelance Data Annotation Specialist
PolandToptal Member Since February 11, 2014

Patryk is a software engineer who loves creating new things. He develops efficient solutions to meet client requirements. He enjoys helping clients come up with clear visions of their needs. Patryk loves to make the whole development process clear and efficient, implementing the best available options for a specific problem—he has experience using approaches like continuous delivery, Scrum, TDD, ATTD, BDD, and extreme programming.

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Badr Jaidi

Freelance Data Annotation Specialist
CanadaToptal Member Since May 5, 2022

Badr is a data scientist specializing in natural language processing. He speaks four languages fluently and has been in the technology field for nearly a decade, where he has worked on a broad range of projects going from hardware to front-end development.

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Miroslav Braun

Freelance Data Annotation Specialist
CroatiaToptal Member Since May 11, 2016

Since 2009, Miroslav has been working as a professional full-stack developer, consultant, and software architect developing solutions with modern technologies. He is a great team player yet no stranger to handling solo projects with ease. Given the broad spectrum of software engineering, Miroslav can handle anything, from small styling changes to server administration and complex solutions.

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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 Data Annotation Specialists Through Toptal

1

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.
2

Work With Hand-Selected Talent

Within days, we'll introduce you to the right Data Annotation specialist for your project. Average time to match is under 24 hours.
3

The Right Fit, Guaranteed

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

FAQs

  • How are Toptal Data Annotation specialists different?

    At Toptal, we thoroughly screen our Data Annotation specialists 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 Data Annotation specialists in less than 48 hours through Toptal?

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

  • What is the no-risk trial period for Toptal Data Annotation specialists?

    We make sure that each engagement between you and your Data Annotation specialist 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 Data Annotation Specialists Are in High Demand.

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