Hire the Top 3% of Freelance JNI Developers

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

No-Risk Trial, Pay Only If Satisfied.

Hire Freelance JNI Developers and Engineers

Si Ke

Freelance JNI Developer

CanadaToptal Member Since September 4, 2020

Si is a talented engineer with 20 years of software design and development experience and six years of effective team leadership expertise. He developed Diskeeper that sold more than 10 million copies. Si has successfully shipped several products running in Windows, Linux, and Macintosh. His strengths include designing and developing complex and high-performance enterprise software. Si is an innovative professional who enjoys solving good challenges.

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Alberto Mancini

Freelance JNI Developer

ItalyToptal Member Since September 29, 2014

Alberto is a full-stack developer with over 20 years’ experience. He started coding while studying for his PhD and moved on to web-related technologies from there. He has been described as very competent and consistent in his programming, and is an excellent communicator.

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Muhmud Ahmad

Freelance JNI Developer

TurkeyToptal Member Since June 18, 2020

For over the past 20 years, Muhmud has been working with database services, mainly in the UK. He is a specialist in database development, administration, and business intelligence. Muhmud is also an accomplished Java/Spring full-stack developer, and AWS DevOps engineer, using tools such as Gitlab, Docker, and Kubernetes. More recently, he has also been involved with Go and Rust development. Muhmud's highly developed, hybrid skill set makes him a tremendous asset to any team.

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Mateusz Jedrzejewski

Freelance JNI Developer

United KingdomToptal Member Since March 5, 2018

Mateusz is a highly motivated software engineer with versatile skills and passion. He has a deep understanding of running computer systems and software development processes. Mateusz loves challenging work, learning new things, and the feeling that he can make a difference. Apart from focused, result-oriented engineering experience, Mateusz has a scientific background, primarily in image recognition.

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Akash Shahriar

Freelance JNI Developer

BangladeshToptal Member Since November 4, 2022

Akash is a seasoned Android developer experienced in building mobile products with millions of daily active users. He has worked with cross-functional teams in Agile environments using MVVM architecture and following solid principles and Android best practices. Some of the best apps Akash developed are published in the Google Play store and have more than 10 million downloads.

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Ridvan Ozaydin

Freelance JNI Developer

TurkeyToptal Member Since June 6, 2022

Rıdvan is an experienced software developer who has been working since 2007. During this time, he has created complex solutions for customers in the blockchain, IoT, energy, defense, and VOIP sectors. He has undertaken responsibilities as a developer, architect, and team lead, specializing in various technologies like Node.js, Java, Go, C++, PostgreSQL, AWS, Azure, and Kubernetes.

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Grzegorz Sokół

Freelance JNI Developer

PolandToptal Member Since June 10, 2020

Grzegorz is a seasoned embedded developer with 15 years of experience. He has delivered everything from low-level driver code through middleware, applications, and UIs. He has deep expertise in image processing, multimedia, streaming, digital signage, and DRM, and he is a native-language (C/C++) coder with vast experience in developing high-availability and high-performance back-end solutions. Grzegorz is also an Android developer and experienced in developing electronic payment solutions.

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Alexandru Sclearuc

Freelance JNI Developer

MoldovaToptal Member Since May 11, 2020

Alexandru is a professional back-end developer with over 25 years of experience, with additional experience in front end and mobile. With all the skills he's gained during his work history, he's confident in his ability to fulfill complex software development tasks. Alexandru has knowledge in both mathematics and computer science and enjoys data science and machine learning.

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Claudio Carlenzoli

Freelance JNI Developer

ItalyToptal Member Since February 23, 2015

Claudio has many years of experience working as an IT director and programmer. In that time, he has learned a variety of programming languages and has used this knowledge to develop several mobile and web applications for his customers. Claudio hopes to build upon his skillset by expanding his customer base and diversifying his work.

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Hernan Saez

Freelance JNI Developer

ArgentinaToptal Member Since April 17, 2018

I'm a software developer with more than 18 years of experience working with different platforms and technologies, like C++, OpenGL , iOS, Unity3D, Android, Xamarin, C#, Javascript, .NET Framework, Java and others. I like video games, movies, comics, reading and drawing.

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Dmitry Malyugin

Freelance JNI Developer

IndonesiaToptal Member Since November 6, 2017

Dmitry is a full-stack, React Native, Node.js developer with extensive experience in mobile SDK and plugin development. He's skilled in native iOS, Android, and several cross-platform mobile frameworks. Dmitry's knowledge of cross-platform and native development gives him a unique ability to perform the full spectrum of work and create fully functional applications for multiple platforms.

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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
Building a cross-platform app to be used worldwide
Thierry Jakicevic
Building a cross-platform app to be used worldwide
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 start up, they are our secret weapon.

Brantley Pace, CEO & Co-Founder

Tripcents

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

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.

Ryan Rockefeller, CEO

Radeeus

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

ProHatch

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

Site Specific Software Solutions

We used Toptal to hire a developer with extensive Amazon Web Services experience. We interviewed four candidates, one of which turned out to be a great fit for our requirements. The process was quick and effective.

Abner Guzmán Rivera, CTO and Chief Scientist

Photo Kharma

Sergio was an awesome developer to work with. Top notch, responsive, and got the work done efficiently.

Dennis Baldwin, Chief Technologist and Co-Founder

PriceBlink

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.

Derek Minor, Senior VP of Web Development

Networld Media Group

Toptal's developers and architects have been both very professional and easy to work with. The solution they produced was fairly priced and top quality, reducing our time to launch. Thanks again, Toptal.

Jeremy Wessels, CEO

Kognosi

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 JNI 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 JNI developer for your project. Average time to match is under 24 hours.
3

The Right Fit, Guaranteed

Work with your new JNI 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 JNI developers different?

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

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

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

    We make sure that each engagement between you and your JNI 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 JNI Developers are in High Demand.

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