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Hire the Top 3% of Freelance JUnit Developers

Hire vetted JUnit developers, engineers, programmers, coders, architects, and consultants on demand. Leading companies choose JUnit freelancers from Toptal for their most important development projects.

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Clients rate Toptal JUnit developers 4.9 / 5.0 on average based on 1,446 reviews.
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Jiewen Xiong

Freelance JUnit Developer
Verified Expert in Engineering
UTC-07:00
United States
Toptal Member Since November 5, 2021

Jiewen is a self-motivated QA automation engineer with over four years of hands-on experience in web, mobile, and API testing with Java, Ruby, Cucumber, Rest Assured, Selenium, and Appium frameworks. As an expert in his field, he always delivers outstanding results on time. With his skill set, can-do attitude, and enthusiasm for coding, Jiewen is dedicated to assisting with complex projects.

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Joe Cavazos

Freelance JUnit Developer
Verified Expert in Engineering
UTC-06:00
United States
Toptal Member Since June 19, 2016

Joe is a principal Java developer and architect with over 14 years of experience developing enterprise and small-scale applications, primarily written in Spring Boot. He has experience at all stages of the SDLC and is well-versed in relational databases, application servers, REST APIs, unit testing, and AWS.

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Sérgio Silva Mucciaccia

Freelance JUnit Developer
Verified Expert in Engineering
UTC-03:00
Brazil
Toptal Member Since October 7, 2021

Sérgio is a Java engineer with seven years of experience spanning three companies. He is a quick learner, eager to face new challenges. As a collaborative developer always open to suggestions and critics, Sérgio is passionate about finding simple and elegant solutions to complex problems.

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Rubén Martínez

Freelance JUnit Developer
Verified Expert in Engineering
UTC+01:00
Spain
Toptal Member Since June 3, 2020

Rubén is a highly motivated senior software engineer continuously updated on state-of-the-art technologies and enjoys programming. He offers five years of experience as a software architect and more than 15 years of experience in the full software development cycle.

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Adrián Antón Collado

Freelance JUnit Developer
Verified Expert in Engineering
UTC+01:00
Spain
Toptal Member Since June 2, 2021

Adrián is an expert in Calypso technology and its integration with other client ecosystems, especially where Java expertise is required. He has guided some of the most challenging projects in the European investment bank industry, focusing on complete automation of project lifecycles applied to banking industry processes such as accounting, regulatory reporting, payments, CI/CD, user acceptance testing, and configuration management.

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Trinadh Amireddy

Freelance JUnit Developer
Verified Expert in Engineering
UTC+05:00
India
Toptal Member Since April 4, 2022

Trinadh is an experienced software engineer with a demonstrated history of success working in the computer software industry. Skilled in designing systems using Java, Spring Boot, PostgreSQL, AWS S3, Amazon SQS, and JUnit, Trinadh excels in projects requiring Java-related technologies because they involve more coding and design. Trinadh was awarded best employee for delivering features in time while improving the processes and enhancing results.

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Vlad Medvedev

Freelance JUnit Developer
Verified Expert in Engineering
UTC+07:00
Thailand
Toptal Member Since December 27, 2017

Vladislav is a talented and ambitious Java expert who has more than nine years of extensive experience developing scalable back-end solutions with Spring. He enjoys researching new technologies and sharing his experience with his colleagues. He communicates extremely well and is meticulous in his coding practices.

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Herve Roussel

Freelance JUnit Developer
Verified Expert in Engineering
UTC+08:00
Singapore
Toptal Member Since February 1, 2016

Herve is a hands-on engineering leader with years of experience, specializing in AI and Big Dare and building high-velocity teams. He's architected and coded large-scale systems and led teams of 10-20 engineers, and he has a passion for creating engaging engineering training. Herve has achieved a rating of 9.0/10 for coaching 25+ managers in the US and EU in over 60 sessions.

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Chris Curzon

Freelance JUnit Developer
Verified Expert in Engineering
UTC+09:00
Japan
Toptal Member Since October 9, 2018

Chris is a professional software engineer with 20+ years of industry experience. He has worked on projects for Sony, Disney, Turner, and BBC. He is experienced in both back-end and front-end technologies, with hands-on experience on large-scale bespoke CMS and UGC deployments, as well as browser-based games. Most of Chris' recent work has used JavaScript, PHP, SQL, and Java, but he is capable with many other languages as well.

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Md.Rajib-Ul Islam

Freelance JUnit Developer
Verified Expert in Engineering
UTC+10:00
Australia
Toptal Member Since February 7, 2022

Rajib is an open-minded AWS Certified Solutions Architect (Professional) and experienced software professional who is proactive with project execution and delivery. He has over 16+ years of development and software architectural design experience. Rajib has worked in software development, lifecycle models, process models, and software design patterns. His skills span back- and front-end technologies, including diverse languages, frameworks, and tools.

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Lucas Lee

Freelance JUnit Developer
Verified Expert in Engineering
UTC+12:00
New Zealand
Toptal Member Since June 28, 2022

Lucas is a full-stack engineer with 10+ years of experience in web development, managing all aspects of the development process and mastering the front-end field. He is a great team player with an extensive background in mentoring fellow developers. Passionate about solving problems for his clients, Lucas's work focuses on creating an easy development environment, resolving technical debts, and providing best practice code examples.

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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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... 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
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How to Hire JUnit Developers Through Toptal

1

Talk to One of Our Client Advisors

A Toptal client advisor 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 JUnit developer for your project. Average time to match is under 24 hours.
3

The Right Fit, Guaranteed

Work with your new JUnit 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 JUnit 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.

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FAQs

  • How quickly can you hire with Toptal?

    Typically, you can hire JUnit developers with Toptal in about 48 hours. For larger teams of talent or Managed 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 JUnit 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 JUnit 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 JUnit developers for your project.

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

  • You can hire JUnit developers on an hourly, part-time, or full-time basis. Toptal can also manage the entire project from end-to-end with our Managed Delivery offering. Whether you hire an expert 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 JUnit developers can fully integrate into your existing team for a seamless working experience.

  • We make sure that each engagement between you and your JUnit 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 Talent Only

    Trusted Talent Only

    All of our talent are seasoned professionals 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 JUnit Developers Are in High Demand.

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