Hire the Top 3% of Freelance JUnit Developers

Toptal is a marketplace for top JUnit developers, engineers, programmers, coders, architects, and consultants. Top companies and start-ups choose Toptal JUnit freelancers for their mission-critical software projects.

No-Risk Trial, Pay Only If Satisfied.

Clients Rate Toptal JUnit Developers4.7 / 5.0on average across 24 reviews as of May 3, 2023

Hire Freelance JUnit Developers and Engineers

Christina Lin

Freelance JUnit Developer

CanadaToptal Member Since March 6, 2018

Christina is a senior QA engineer with expertise in test automation, test management, and manual testing for web and mobile applications. She has created test automation frameworks from the ground up using Selenium WebDriver in several projects as well as automating API testing using REST-assured and Postman. With experience in both private and public sectors, Christina has worked with large, medium-size, and small startup companies.

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Alex Nitu

Freelance JUnit Developer

RomaniaToptal Member Since May 29, 2019

Alex is a highly efficient and reliable Android software engineer with more than eight years of industry experience. He has architected complex systems throughout his career, led teams, and helped build products used by millions of users. Having also been in charge of monitoring and maintaining production applications, Alex favors simple software solutions that are easy to change.

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Pere Casafont

Freelance JUnit Developer

SpainToptal Member Since May 6, 2015

Pere is a software architect with over a decade of experience working on JVM-based back-end products ranging from custom binary protocols to REST APIs on Ktor. He has a remarkable ability to work on and get the best out of any kind of project. Once Pere is in a team, they will gradually notice an increase in that team's cohesion and performance, no matter his position in it. He is very communicative, proactive, and committed to the projects he works on.

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Jovana Rajkovic

Freelance JUnit Developer

SerbiaToptal Member Since March 22, 2018

For the past seven years, Jovana has worked as a QA engineer collaborating with various QA teams and on complex functional testing (manual and automation) on multiple types of applications. She's passionate about bug hunts and is known as a hard-working team player who loves to learn. Jovana thrives under pressure and this can be seen in her history of successfully dealing with deadlines and product deliveries.

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Tomasz Dąbrowski

Freelance JUnit Developer

PolandToptal Member Since October 30, 2015

Tomasz is a creative developer with over fifteen years of experience designing and implementing Java applications. He is a team player, enthusiastic about learning new technologies and trying out different ideas and approaches to process improvement. Tomasz has worked for international companies, such as Hewlett-Packard and Silicon Valley startups. Currently, he helps small and medium companies to create Java-based solutions.

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Francis Altomare

Freelance JUnit Developer

AustriaToptal Member Since May 23, 2016

Francis is an experienced full-stack engineer with a focus on JVM languages and native mobile. As a startup veteran and co-founder of StormPins, he has first-hand experience growing ideas from concept, bringing them into production, and scaling as they grow. He has built apps for iOS and Android and is as comfortable developing APIs as he is deploying them. He loves working with Java and will always have a soft spot in his heart for Objective-C.

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Nemanja Veskovic

Freelance JUnit Developer

SerbiaToptal Member Since January 6, 2017

Nemanja is a passionate QA engineer with more than 14 years of experience working with various QA teams and on complex functional and performance testing (manual and automation), creating full continuous integration setups from scratch and ensuring QA is implemented in all software development stages from design to deployment. Nemanja also has six years of experience with QA team lead roles, including interviewing and hiring new team members.

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Jorge Nicolás Cellerino

Freelance JUnit Developer

ArgentinaToptal Member Since March 7, 2016

Jorge has many years of experience working with Node.js, MongoDB, Java, and related frameworks like Spring and Hibernate, recently focused on Agile methodologies for building RESTful web services for mobile and web applications. Jorge is responsible, proactive, and a fast learner, committed to results and well accustomed to working with distributed teams in different time zones.

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Rodolfo Luis Leyes

Freelance JUnit Developer

ArgentinaToptal Member Since April 23, 2015

Rodolfo is a highly motivated, self-driven developer with over fifteen years of experience. He started learning software programming in his early youth, learning Basic from a book and playing around with an old 8086 PC. He is a professional who looks forward to working on high-quality projects. Rodolfo prides himself in his ability to dig and solve problems quickly.

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Igor Pavin

Freelance JUnit Developer

UkraineToptal Member Since December 15, 2015

Igor has more than 19 years of experience as a software engineer, developer, and architect. Most of his work has been with Linux-based Java back-end work using a Spring framework. He is a good team player, open, positive, responsible, and realistic. Igor has strong analytical skills, a broad range of IT expertise, eagerness to learn different technologies, and good communication skills.

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Konrad Gadzinowski

Freelance JUnit Developer

PolandToptal Member Since August 10, 2017

Konrad is a highly skilled software developer who has delivered numerous web and mobile applications. He has created software for multiple small and larger companies, helping them to generate combined revenue of millions of dollars. He's a great team player and a proactive self-starter. Konrad has the skills of a full-stack JavaScript developer, enabling him to see the whole picture and deliver projects faster and with higher quality.

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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.

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K Dunn & Associates

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.

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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.

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Dennis Baldwin, Chief Technologist and Co-Founder

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Working with Marcin is a joy. He is competent, professional, flexible, and extremely quick to understand what is required and how to implement it.

André Fischer, CTO

POSTIFY

We needed a expert engineer who could start on our project immediately. Simanas exceeded our expectations with his work. Not having to interview and chase down an expert developer was an excellent time-saver and made everyone feel more comfortable with our choice to switch platforms to utilize a more robust language. Toptal made the process easy and convenient. Toptal is now the first place we look for expert-level help.

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We had a great experience with Toptal. They paired us with the perfect developer for our application and made the process very easy. It was also easy to extend beyond the initial time frame, and we were able to keep the same contractor throughout our project. We definitely recommend Toptal for finding high quality talent quickly and seamlessly.

Ryan Morrissey, CTO

Applied Business Technologies, LLC

I'm incredibly impressed with Toptal. Our developer communicates with me every day, and is a very powerful coder. He's a true professional and his work is just excellent. 5 stars for Toptal.

Pietro Casoar, CEO

Ronin Play Pty Ltd

Working with Toptal has been a great experience. Prior to using them, I had spent quite some time interviewing other freelancers and wasn't finding what I needed. After engaging with Toptal, they matched me up with the perfect developer in a matter of days. The developer I'm working with not only delivers quality code, but he also makes suggestions on things that I hadn't thought of. It's clear to me that Amaury knows what he is doing. Highly recommended!

George Cheng, CEO

Bulavard, Inc.

As a Toptal qualified front-end developer, I also run my own consulting practice. When clients come to me for help filling key roles on their team, Toptal is the only place I feel comfortable recommending. Toptal's entire candidate pool is the best of the best. Toptal is the best value for money I've found in nearly half a decade of professional online work.

Ethan Brooks, CTO

Langlotz Patent & Trademark Works, Inc.

In Higgle's early days, we needed the best-in-class developers, at affordable rates, in a timely fashion. Toptal delivered!

Lara Aldag, CEO

Higgle

Toptal makes finding a candidate extremely easy and gives you peace-of-mind that they have the skills to deliver. I would definitely recommend their services to anyone looking for highly-skilled developers.

Michael Gluckman, Data Manager

Mxit

Toptal’s ability to rapidly match our project with the best developers was just superb. The developers have become part of our team, and I’m amazed at the level of professional commitment each of them has demonstrated. For those looking to work remotely with the best engineers, look no further than Toptal.

Laurent Alis, Founder

Livepress

Toptal makes finding qualified engineers a breeze. We needed an experienced ASP.NET MVC architect to guide the development of our start-up app, and Toptal had three great candidates for us in less than a week. After making our selection, the engineer was online immediately and hit the ground running. It was so much faster and easier than having to discover and vet candidates ourselves.

Jeff Kelly, Co-Founder

Concerted Solutions

We needed some short-term work in Scala, and Toptal found us a great developer within 24 hours. This simply would not have been possible via any other platform.

Franco Arda, Co-Founder

WhatAdsWork.com

Toptal offers a no-compromise solution to businesses undergoing rapid development and scale. Every engineer we've contracted through Toptal has quickly integrated into our team and held their work to the highest standard of quality while maintaining blazing development speed.

Greg Kimball, Co-Founder

nifti.com

How to Hire JUnit 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 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.

Find Experts With Related Skills

Access a vast pool of skilled developers in our talent network and hire the top 3% within just 48 hours.

FAQs

  • How are Toptal JUnit developers different?

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

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

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

    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 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

    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

    Hire in under 2 weeks and scale your team up or down as needed, no strings attached.

  • 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

    Choose the engagement type that suits your needs — hourly, part-time, or full-time — with the ability to change anytime.

  • 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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