Hire the top 3% of freelance Spark developers.

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

We've been blown away by the level of talent we've been able to hire through Toptal.

Brad Rozran, Optimizely

Trusted by leading brands and startups

Our Exclusive Network of Spark Developers

Andres Ferraro

Spark Developer

Andres is a full-stack software engineer with some experience in machine learning. He has developed for a variety of projects, from web applications to big... data solutions. He is now working as a researcher at the Music Technology Group of the Universitat Pomepu Fabra of Barcelona. He is also an open source enthusiast. 

Hire Andres

Radek Ostrowski

Spark Developer

Radek is a certified Toptal Blockchain Engineer particularly interested in Ethereum and smart contracts. In the fiat world, he is experienced in big data/ma...chine learning projects. He is a triple winner in two different international IBM Apache Spark competitions, co-creator of PlayStation 4's back-end, a successful hackathon competitor, and speaker at conferences in Australia, Poland, and Serbia. 

Hire Radek

Hire Spark Developers Seamlessly with Toptal

1
Talk to One of Our Industry Experts
A Toptal director of engineering will work 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 Spark developer for your project. Average time to match is under 24 hours.
3
The Right Fit, Guaranteed
Work with your new Spark developer for a trial period (pay only if satisfied), ensuring they're the right fit before starting the engagement.

FAQs

  • How are Toptal Spark developers different?

    At Toptal, we thoroughly screen our Spark developers to ensure we only supply experts of the highest caliber. Of the more than 100,000 people who apply to join the Toptal network each year, we accept fewer than 3%. You'll work with engineering experts (never generalized recruiters or HR reps) to understand your goals, technical needs, and team dynamics. The end result: expertly-matched talent from our network, hand-selected to fit your business needs.

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

    We make sure that each engagement between you and your Spark 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.

  • How fast can I hire Spark developers through Toptal?

    Depending on availability and how fast you can progress, you could start your no-risk trial with a Spark developer within 48 hours of signing up. Most of our engagements start within 2 weeks of discussing your project with us.

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 in under 2 weeks 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 Spark Developers are in high demand.

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