How do I hire OpenNLP developers?

To hire the right OpenNLP 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 OpenNLP developers for your project.

How are Toptal OpenNLP developers different?

At Toptal, we thoroughly screen our OpenNLP 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 OpenNLP developers with Toptal, you’ll always work with world-class, custom-matched OpenNLP developers ready to help you achieve your goals.

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

You can hire OpenNLP 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 OpenNLP 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 OpenNLP developers can fully integrate into your existing team for a seamless working experience.

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

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

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Harun Zafer

OpenNLP Developer

Verified Expert in Engineering

Canada

Toptal Member Since January 28, 2022

Harun is a software and AI engineer with 15+ years of experience, specializing in back-end development and AI-driven solutions. Recently, he has focused on building large language model (LLM) applications and NLP systems, including entity extraction, content categorization, and document summarization. Skilled in scalable cloud architectures and fluent in Java, Python, and C#, Harun excels in creating innovative, real-world AI solutions while staying adaptable to new technologies.

OpenNLP Linux Windows Development Visual Studio Development Java Python Docker Amazon S3 AWS Lambda Spring Database Algorithms NLP

View Jon

Jon Howells

OpenNLP Developer

Verified Expert in Engineering

United Kingdom

Toptal Member Since May 15, 2020

Jon has been the lead data scientist at one of the world's largest technology consultancies for several years, with experience managing large data science and engineering teams and developing data strategies and product roadmaps. He has a strong leadership and communication style and a solid academic and technical background, with an MSc in Machine Learning from University College London. Jon has led large, complex engagements across the education, consumer goods, retail, and public sectors.

OpenNLP Python Dataiku AWS Artificial Intelligence Big Data Architecture Data Preprocessing SQL Machine Learning Cloud Engineering Data Analysis Data Science Analytics Development

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Yanchuan Sim

OpenNLP Developer

Verified Expert in Engineering

Singapore

Toptal Member Since June 6, 2016

Yanchuan is a PhD candidate in language technologies from Carnegie Mellon University with over seven years of experience working with machine learning systems and cutting-edge technologies in natural language processing. Currently, he works with several startups to incorporate ML and NLP technologies into their products.

OpenNLP Terraform Linux Deep Learning C NLTK PostgreSQL Elasticsearch Amazon S3 Machine Learning Unsupervised Learning Sentiment Analysis Text Mining

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Oleksii Sliusarenko

OpenNLP Developer

Verified Expert in Engineering

Ukraine

Toptal Member Since November 4, 2019

Oleksii is a senior research engineer specializing in machine learning with several years of hands-on, in-depth experience. In his free time, he competes in international programming and math competitions—and often wins. At Deloitte and Grammarly, he developed their core deep learning and AI algorithms. Oleksii has worked at all stages of R&D from problem formulation with clients to product deployment.

OpenNLP Python Java NLP Scikit-Learn Algorithms Machine Learning Data Analysis

View Hemen

Hemen Ashodia

OpenNLP Developer

Verified Expert in Engineering

India

Toptal Member Since April 3, 2018

Hemen has over 14 years of experience in full-stack development and 10 with machine learning, contributing to hundreds of ML projects. He possesses hard-to-find expertise in artificial neural networks, deep learning, reinforcement learning, and generative adversarial networks. Hemen has also worked for companies that were later acquired by Intel, mainly for their machine learning development. He has worked with notable companies like Bitcoin.com, Tala, and Johnson & Johnson.

OpenNLP Kubernetes Django AWS RabbitMQ Docker ETL Big Data Architecture Data Engineering SQL Algorithms Data Science Artificial Intelligence

View Tudor

Tudor Vlad

OpenNLP Developer

Verified Expert in Engineering

Romania

Toptal Member Since June 8, 2021

Tudor is a senior IT professional with over 15 years of experience, focused on creating meaningful impact via software. He is an Agile practitioner and a team player. He has architected, led, and/or co-managed the development of four SaaS products and one physical asset procuring and leasing service since 2015. As an architect and senior back-end engineer, Tudor works closely with clients across various industries, including finance, payments, fintech, insurtech, and eCommerce.

OpenNLP Java Software Architecture Spring Boot Spring Back-end Developers

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Kaustav Chakraborty

OpenNLP Developer

Verified Expert in Engineering

India

Toptal Member Since October 9, 2021

Kaustav is a hands-on, goal-oriented, versatile technology professional with more than two decades of experience, primarily in open-source digital technologies, such as blockchain, IoT, microservices, cloud, distributed architecture, R&D, design, and development, with a proven track record delivering consistent business results. He loves to take on technical challenges, learn about new technology innovations, and deliver successful products worldwide.

OpenNLP Java Golang Spring Boot Ethereum C++Apache Kafka Enterprise Architecture Cloud Engineering Kubernetes MongoDB MySQL Spring

View Arman

Arman A Anwar

OpenNLP Developer

Verified Expert in Engineering

United States

Toptal Member Since April 16, 2025

Arman is an AI systems expert with a proven track record of building enterprise-grade intelligent solutions that drive business outcomes. Organizations like DARPA and Samsung have trusted him to solve complex problems and deliver real-world impact. Arman is passionate about next-gen AI, especially systems that demand multi-modal reasoning, precise inference, and knowledge-based thinking.

OpenNLP Machine Learning Artificial Intelligence NLP Reinforcement Learning R Python LLM LangChain OpenAI PyTorch NumPy PostgreSQL

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

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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.
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How to Hire OpenNLP 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 OpenNLP developer for your project. Average time to match is under 24 hours.

The Right Fit, Guaranteed

Work with your new OpenNLP 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 OpenNLP 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 OpenNLP 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 OpenNLP 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 OpenNLP 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 OpenNLP 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 OpenNLP 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 OpenNLP developers for your project.
At Toptal, we thoroughly screen our OpenNLP 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 OpenNLP developers with Toptal, you’ll always work with world-class, custom-matched OpenNLP developers ready to help you achieve your goals.
You can hire OpenNLP 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 OpenNLP 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 OpenNLP developers can fully integrate into your existing team for a seamless working experience.
We make sure that each engagement between you and your OpenNLP 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 OpenNLP 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.