How do I hire CatBoost developers?

To hire the right CatBoost developer, it’s important to evaluate a candidate’s experience, technical skills, and communication skills. You’ll also want to consider the fit with your particular industry, company, and project. Toptal’s rigorous screening process ensures that every member of our network has excellent experience and skills, and our team will match you with the perfect CatBoost developers for your project.

How are Toptal CatBoost developers different?

At Toptal, we thoroughly screen our CatBoost developers to ensure we only match you with the highest caliber of talent. Of the more than 200,000 people who apply to join the Toptal network each year, fewer than 3% make the cut. In addition to screening for industry-leading expertise, we also assess candidates’ language and interpersonal skills to ensure that you have a smooth working relationship. When you hire CatBoost developers with Toptal, you’ll always work with world-class, custom-matched CatBoost developers ready to help you achieve your goals.

Can you hire CatBoost developers on an hourly basis or for project-based tasks?

You can hire CatBoost developers on an hourly, part-time, or full-time basis. Toptal can also manage the project end-to-end based on your specific requirements as part of our Consulting and Services offerings. Whether you hire a CatBoost developer for a full- or part-time position, you’ll have the control and flexibility to scale your team up or down as your needs evolve. Our CatBoost developers can fully integrate into your existing team for a seamless working experience.

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

We make sure that each engagement between you and your CatBoost 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 CatBoost developer who may be a better fit and with whom we will begin a second, no-risk trial.

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View Kliment

Kliment Merzlyakov

CatBoost Developer

Verified Expert in Engineering

UTC-06:00

Mexico

Toptal Member Since June 10, 2020

Kliment is a business-oriented data scientist with several years of industry experience. With an aspiration to make machine learning projects done without quality trade-offs, Kliment can handle any project, from a business hypothesis brainstorming session to implementing a model and final integration.

CatBoost Python SQL Business Intelligence Development Data Visualization

View Jose

Jose Tomas Lavin Leon

CatBoost Developer

Verified Expert in Engineering

UTC-04:00

Chile

Toptal Member Since July 29, 2026

José is a data scientist and machine learning engineer with over 5 years of experience spanning data engineering, credit risk modeling, and end-to-end MLOps. He has built data pipelines and warehouses on AWS and GCP that feed the ML infrastructure running on top of them, primarily for the financial sector. José reduced portfolio risk by 25% while at Aplazame.

CatBoost XGboost MLflow Docker Apache Airflow Amazon S3 Python SQL Scikit-Learn Machine Learning

View Denis

Denis Volk

CatBoost Developer

Verified Expert in Engineering

UTC+01:00

Switzerland

Toptal Member Since March 18, 2020

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.

CatBoost MacOS Jupyter AWS Sagemaker Amazon S3 AWS Python Git MATLAB Data Analysis Machine Learning Plotly Mathematics

View Flavia

Flavia Giammarino

CatBoost Developer

Verified Expert in Engineering

UTC+01:00

Italy

Toptal Member Since July 2, 2026

Flavia has a PhD in statistics with 15+ years of experience specializing in machine learning and artificial intelligence systems for time series data. Before independent consulting, she worked as a quantitative analyst in investment banking in London at Bank of America, Deutsche Bank, and Barclays.

CatBoost Python AWS Sagemaker Scikit-Learn XGboost

View Belma

Belma Ibrahimović

CatBoost Developer

Verified Expert in Engineering

UTC+01:00

Bosnia and Herzegovina

Toptal Member Since November 21, 2023

Belma is a dedicated senior full-stack data scientist and AI expert with 8+ years of experience delivering high-impact end-to-end AI solutions across industries. Specializing in cutting-edge technologies like generative AI, LLMs, and agentic systems, she excels in natural language processing (NLP) and unlocking the potential of language data. Belma's strong communication skills and adaptability enable her to translate complex AI concepts into actionable insights, driving business value.

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View Lovro

Lovro Iliassich

CatBoost Developer

Verified Expert in Engineering

UTC+01:00

Croatia

Toptal Member Since February 20, 2016

Lovro is a machine learning engineer and data scientist who has worked in AI since starting his PhD in 2006 and brings full-stack software engineering experience. He builds custom machine learning and deep learning models as well as generative AI and multi-agent systems, choosing the right approach for each problem and delivering it end-to-end. Lovro's career spans research at INRIA and on a European Space Agency project, engineering at Amazon, and 20+ client engagements.

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View Lefteris

Lefteris Andritsos

CatBoost Developer

Verified Expert in Engineering

UTC+02:00

Greece

Toptal Member Since October 21, 2024

Lefteris is an accomplished senior data scientist with over five years of experience developing innovative machine learning solutions. At VMO2, he led the creation of a flagship product recommendation engine, while as a Toptal core member, he focused on productionizing AI models. With a strong background in product and research roles, Lefteris excels at transforming complex data into actionable insights and pushing the boundaries of AI and data science.

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View Anton

Anton Andreitsev

CatBoost Developer

Verified Expert in Engineering

UTC+03:00

Finland

Toptal Member Since August 8, 2022

Anton is a data scientist, machine learning (ML) engineer, and data enthusiast with four years of working experience in data assimilation (DA) and machine learning. He has supervised a team of junior and senior specialists and taught machine learning for three years at Moscow State University.

CatBoost Machine Learning Data Analysis

View Evgeniy

Evgeniy Salskiy

CatBoost Developer

Verified Expert in Engineering

UTC+04:00

Armenia

Toptal Member Since April 6, 2026

Evgeniy is a senior machine learning engineer with 12 years of experience shipping production-ready systems. At Yandex, he guided a team of 10 to develop a real-time content classification platform processing millions of events per day and integrated LLMs into production, reducing annotation costs by 97%. Previously, Evgeniy also built anti-fraud and credit scoring systems in fintech from scratch, handling real-time inference, feature engineering on financial streams, and model monitoring.

CatBoost Machine Learning NLP AWS Data Engineering Python OpenCV Optical Character Recognition Computer Vision NumPy Scikit-Learn SQL Data Visualization

View Ahmad

Ahmad Abdullah

CatBoost Developer

Verified Expert in Engineering

UTC+05:00

Pakistan

Toptal Member Since August 17, 2026

Ahmed is a senior AI/ML and data engineer who co-founded TensorLabs and led it as head of AI, scaling to a 25-engineer team and 80+ clients. Over 7 years, he built Qualzo, an AI-twin platform with 7,000+ active users, and led the AI/ML team at Deep3 Labs, MinersAI, and Mindreader.

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View Utkarsh

Utkarsh Gupta

CatBoost Developer

Verified Expert in Engineering

UTC+05:00

India

Toptal Member Since August 3, 2026

Utkarsh is a senior ML/AI engineer with 11 years of experience turning complex AI problems into reliable, measurable products. He builds production systems across GenAI, RAG, NLP, Vision, MCP, and LLM-based agents, and works the end-to-end ML lifecycle, including data, models, deployment, monitoring, and retraining. His edge is in what happens after the demo: rigorous evaluation, governance, and architecture that holds up at scale.

CatBoost Python Machine Learning Deep Learning Artificial Intelligence AWS LLM RAG Prompt Engineering LangChain Back-end Developers Software Architecture Claude

Discover More CatBoost Developers in the Toptal Network

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THE TOPTAL ADVANTAGE

98% of Toptal clients choose to hire our talent after a risk-free trial.

Toptal's screening and matching process ensures exceptional talent are matched to your precise needs.

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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

Leading a digital transformation

Building a cross-platform app to be used worldwide

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

How to Hire CatBoost Developers Through Toptal

Talk to One of Our Client Advisors

A Toptal client advisor 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 CatBoost developer for your project. Average time to match is under 24 hours.

The Right Fit, Guaranteed

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

EXCEPTIONAL TALENT

How We Source the Top 3% of CatBoost Developers

Our name “Toptal” comes from Top Talent—meaning we constantly strive to find and work with the best from around the world. Our rigorous screening process identifies experts in their domains who have passion and drive.

Of the thousands of applications Toptal sees each month, typically fewer than 3% are accepted.

Start Hiring Today

STEP 1

Language and Personality Evaluation

26.4% of applications pass

The first step of the screening process is a comprehensive English language and communication evaluation. We also assess personality traits, seeking only those who are passionate and fully engaged in their work.

STEP 2

In-depth Skill Review

7.4% of applications pass

We test each applicant’s technical knowledge and problem-solving ability through various assessments. Every member of the Toptal network is an expert in their domain, and we typically only advance candidates with exceptional results in this phase.

STEP 3

Live Screening

3.6% of applications pass

Toptal screeners, who are experts in their functional domain, interview each CatBoost developer. Our screeners provide specific live exercises, looking for problem-solving ability, depth of experience, communication ability, and creativity.

STEP 4

Test Project

3.2% of applications pass

Each candidate is assigned a test project to evaluate whether they can “walk the walk.” Test projects take 1-3 weeks and are comprehensive and provide real-world scenarios for candidates to demonstrate their competence, thoroughness, professionalism, and integrity.

STEP 5

Continued Excellence

Top 3.0% of CatBoost developers

As a quality-first company, we demand the best from our talent, so they can deliver the best to our clients. This principle permeates every Toptal engagement and delivered project. Only the top 3% of Developers can consistently perform at this level.

FAQs

Typically, you can hire CatBoost developers with Toptal in about 48 hours. For larger teams of talent or full end-to-end project delivery, timelines may vary. Our talent matchers are highly skilled in the same fields they’re matching in—they’re not recruiters or HR reps. They’ll work with you to understand your goals, technical needs, and team dynamics, and match you with ideal candidates from our vetted global talent network.

Once you select your CatBoost developer, you’ll have a no-risk trial period to ensure they’re the perfect fit. Our matching process has a 98% trial-to-hire rate, so you can rest assured that you’re getting the best fit every time.
To hire the right CatBoost developer, it’s important to evaluate a candidate’s experience, technical skills, and communication skills. You’ll also want to consider the fit with your particular industry, company, and project. Toptal’s rigorous screening process ensures that every member of our network has excellent experience and skills, and our team will match you with the perfect CatBoost developers for your project.
At Toptal, we thoroughly screen our CatBoost developers to ensure we only match you with the highest caliber of talent. Of the more than 200,000 people who apply to join the Toptal network each year, fewer than 3% make the cut.

In addition to screening for industry-leading expertise, we also assess candidates’ language and interpersonal skills to ensure that you have a smooth working relationship.

When you hire CatBoost developers with Toptal, you’ll always work with world-class, custom-matched CatBoost developers ready to help you achieve your goals.
You can hire CatBoost developers on an hourly, part-time, or full-time basis. Toptal can also manage the project end-to-end based on your specific requirements as part of our Consulting and Services offerings. Whether you hire a CatBoost developer for a full- or part-time position, you’ll have the control and flexibility to scale your team up or down as your needs evolve. Our CatBoost developers can fully integrate into your existing team for a seamless working experience.
We make sure that each engagement between you and your CatBoost 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 CatBoost developer who may be a better fit and with whom we will begin a second, no-risk trial.

Toptal Lets You Hire Fast,
With Unparalleled Success

Trusted Talent Only
Our talent network is composed of thoroughly vetted professionals who ramp up quickly, function as essential team members, and deliver results.
Precise Matching
Our experienced talent matchers specialize in identifying talent that fits your needs. They work to understand your exact requirements and hand-select the best professionals for your project.
Seamless Hiring
We handle all aspects of billing, payments, and NDAs, streamlining the hiring process so you can focus on innovation, not overhead.
No-risk Trial Period
We want to be sure your engagement is a total success, so we offer a no-risk trial period. Work with your new hire for up to two weeks and pay only if you’re satisfied.
Effortless Scaling
We help you scale your team up or down as needed, with quick and efficient hiring in under 48 hours.
Flexible Engagements
Our flexible engagement models allow you to choose the engagement type that suits your needs and adjust it anytime: hourly, part time, or full time.