Hire the Top 3% of Freelance H2O Developers

Toptal is a marketplace for dedicated H2O developers, engineers, programmers, coders, architects, and consultants. Top companies and startups choose Toptal H2O freelancers for their mission-critical H2O development projects.

No-Risk Trial, Pay Only If Satisfied.

Hire Freelance H2O Developers and Engineers

Blake Byerly

Freelance H2O Developer
United StatesToptal Member Since December 11, 2018

Blake possesses both startup and large enterprise experience leveraging machine learning (deep learning and classical techniques) to drive value. He has applied machine learning to a variety of problems, including network event correlation, incident forecasting, resource-constrained scheduling, and eCommerce applications at scale.

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Reema Kumari

Freelance H2O Developer
IndiaToptal Member Since June 9, 2021

Reema has 4+ years of experience in machine learning and data analytics across various projects, such as movie scheduling, cargo space optimization, loan recovery, and digital products. She has focused heavily on natural language processing in the digital product space, and she is proficient in Python and R. Reema is also an incoming student in the UCLA Master of Engineering program, focused on artificial intelligence.

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Ronak Khunt

Freelance H2O Developer
NetherlandsToptal Member Since April 2, 2020

Ronak is an experienced data scientist and software engineer. His background includes building machine learning models, deploying them in productions with bare-metal machines or Docker. At Booking.com, he built a review moderation classifier model that helped classify millions of reviews and predictive models to strengthen their position in a competitive market. His expertise includes building robust data and prediction pipelines.

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Bhoumik Shah

Freelance H2O Developer
IndiaToptal Member Since September 13, 2022

Bhoumik is a machine learning and operations research specialist with six years in AI, notably in ads moderation, linehaul cost optimization, and McKinsey's routing tool. He's excelled in cost reduction and system efficiency, adept with jsprit, OR-Tools, and ML model development. With both a bachelor's and master's degree in mechanical engineering, with a focus on operations research, Bhoumik also holds certifications in deep learning and related fields.

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Carlos J. Gil Bellosta

Freelance H2O Developer
SpainToptal Member Since February 10, 2021

Carlos has 17 years of experience in data science in domains such as IoT, financial risk, credit scoring, churn analysis, biotechnology, and eCommerce. His international industry experience is backed by completing all courses toward a PhD in statistics and a master's and bachelor's degree in math. In addition to being an active contributor to the ecosystem of R packages, Carlos shares his expertise by giving talks and teaching data science at universities and business schools.

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Ioannis Melas

Freelance H2O Developer
United KingdomToptal Member Since March 30, 2021

Ioannis is a data scientist with expertise in prototyping, developing, and deploying data science and ML workflows that best leverage business data. This includes exploratory analysis such as dimensionality reduction, clustering, feature extraction, model fit/parameter estimation, and supervised analysis such as classification and regression. Ioannis is an expert in structured and unstructured data (NLP). Some of his notable clients include the U.S. Food & Drug Administration and AstraZeneca.

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Moustafa Abdelhamid

Freelance H2O Developer
TurkeyToptal Member Since August 9, 2021

Moustafa is a software and data engineer with 11 years of experience designing, building, and running software systems. He has a proven track record of delivering high-quality software that is reactive and scalable. Moustafa has diverse skills beyond building software, such as infrastructure and CI/CD pipelines, ETL/ELT pipelines, and modeling. He has worked with various data technologies like Spark, Kafka, Snowflake, and BigQuery.

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Renee Ahel

Freelance H2O Developer
CroatiaToptal Member Since June 18, 2020

Renee is a data scientist with over 12 years of experience, and five years as a full-stack software engineer. For over 12 years, he has worked in international environments, with English or German as a working language. This includes four years working remotely for German and Austrian client companies and nine months working remotely as a member of the Deutsche Telekom international analytics team.

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Pavel Logacev

Freelance H2O Developer
TurkeyToptal Member Since January 27, 2022

Pavel is a data scientist with a specialization in Bayesian methods. He has a master's degree in computational linguistics and a Ph.D. in cognitive science from Potsdam University in Germany. Having worked in sectors as diverse as pricing, psychology, finance, education, health, eCommerce, SEO, and betting markets, Pavel has over ten years of experience in statistical data analysis and data science.

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Trustpilot
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
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 H2O Developers 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 H2O developer for your project. Average time to match is under 24 hours.
3

The Right Fit, Guaranteed

Work with your new H2O developer for a trial period (pay only if satisfied), ensuring they're the right fit before starting the engagement.

FAQs

  • How are Toptal H2O developers different?

    At Toptal, we thoroughly screen our H2O 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 H2O developers in less than 48 hours through Toptal?

    Depending on availability and how fast you can progress, you could start working with a H2O developer within 48 hours of signing up.

  • What is the no-risk trial period for Toptal H2O developers?

    We make sure that each engagement between you and your H2O 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 H2O Developers Are in High Demand.

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