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 startups choose Toptal JNI freelancers for their mission-critical software projects.

No-Risk Trial, Pay Only If Satisfied.

Trusted by leading brands and startups

Hire Freelance JNI Developers and Engineers

Si Ke

Freelance JNI Developer
Canada
Toptal 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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Mateusz Jedrzejewski

Freelance JNI Developer
United Kingdom
Toptal 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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Alberto Mancini

Freelance JNI Developer
Italy
Toptal 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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Grzegorz Sokół

Freelance JNI Developer
Poland
Toptal 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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Muhmud Ahmad

Freelance JNI Developer
Turkey
Toptal 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 like 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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Ridvan Ozaydin

Freelance JNI Developer
Turkey
Toptal 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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Hernan Saez

Freelance JNI Developer
Argentina
Toptal Member Since April 17, 2018

Hernan is 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. He likes video games, movies, comics, reading, and drawing.

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Dmitry Malyugin

Freelance JNI Developer
Indonesia
Toptal 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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Ayesh Qumhieh

Freelance JNI Developer
Palestine
Toptal Member Since April 11, 2013

Ayesh is a self-motivated developer who loves challenges and problem-solving. He's always ready for tough assignments and enjoys learning new technologies and frameworks. Above all, Ayesh's goals are to continuously improve his development skills while achieving the best results for his clients.

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Andrei Florea

Freelance JNI Developer
Romania
Toptal Member Since October 27, 2020

Andrei is a software engineer with over four years of experience in professional software development and a bachelor's degree in software engineering. He's passionate about software architecture and delivering the best solutions to fit the needs of the client, while focusing on code quality, scalability, and performance.

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Pavlo Fedyna

Freelance JNI Developer
Ukraine
Toptal Member Since August 24, 2020

Pavlo is a lead software engineer with nine years of experience in development. He saved a customer's business by designing a PoC and production-ready solution and helped create a Privileged Access Management startup that became a market leader. He has designed solutions from scratch and launched successful apps to the App Store. Pavlo excels at splitting monolithic applications, debugging, and architecture and efficiently solves business problems while delivering solutions.

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Discover More JNI 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
Conor Kenney
Creating an app for the game
Leading a digital transformation
Elmar Platzer
Leading a digital transformation
Building a cross-platform app to be used worldwide
Building a cross-platform app to be used worldwide
Drilling into real-time data creates an industry game changer
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

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

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

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

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

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 quickly can you hire with Toptal?

    Typically, you can hire a JNI developer 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 JNI 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.

  • How do I hire a JNI developer?

    To hire the right JNI 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 JNI developers for your project.

  • How are Toptal JNI developers different?

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

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

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

  • 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

    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

    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 JNI Developers Are in High Demand.

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