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Hire the Top 3% of Julia Developers

Hire vetted Julia developers on demand. Leading companies choose Julia freelancers from Toptal for their most important development projects.

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Find and hire Top Julia Developers worldwide. Simply click on your preferred time zone on the map.

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Jey Kottalam

Julia Developer
UTC-08:00
United States
Toptal Member Since May 14, 2020

Jey is a computer scientist specializing in high-performance system software, machine learning, mathematical optimization, and related areas. He has created predictive tools, libraries for conducting massive data analysis, contributed to the development of frameworks, and worked as a research engineer at the University of California, Berkeley. Jey is an accomplished software engineer proficient across a multitude of back-end technologies.

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Imi Kim

Julia Developer
UTC-07:00
Canada
Toptal Member Since August 21, 2022

Imi is a seasoned developer with over 30 years of experience leading and implementing systems to solve complex business problems. He has solid expertise in blockchains, mathematical and back-end coding, machine learning, trading, and systems design. Imi can help create a highly efficient version of whatever system a client is working on.

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Keith Zimmerman

Julia Developer
UTC-06:00
United States
Toptal Member Since November 30, 2014

Keith is an experienced architect, developer, and modeler with superb communication skills and the ability to see a project through from beginning to end. He is equally comfortable with the rapid prototyping needs of startup companies and the Agile development workflow in larger teams.

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Daniel Doyle

Julia Developer
UTC-05:00
United States
Toptal Member Since May 3, 2022

Daniel is a data scientist who builds predictive models, data visualizations, and dashboards on large datasets with expertise in the staffing and investment management fields. He made a graph neural network to predict risk on a construction site reducing errors by 60%. Daniel improved a predictive modeling framework, handling millions of records on policyholder behavior using R and H2O. His models are used in financial forecasts and dashboards to catch aberrant behavior as it unfolds.

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Edson Cilos Vargas Júnior

Julia Developer
UTC-03:00
Brazil
Toptal Member Since July 27, 2022

Edson is an AI engineer who builds LLM agents and the data systems behind them. He built a production AI agent with MCP servers, an audit trail, and a 50-scenario evaluation suite covering fabrication and prompt injection. He replaced rule-based routing with a classifier that more than doubled accuracy at 4 milliseconds. He holds a PhD in mathematics, did a postdoc in machine learning, and has experience building production systems for finance and trading.

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Iliyan Zarov

Julia Developer
UTC+00:00
United Kingdom
Toptal Member Since February 15, 2017

Iliyan is a machine learning engineer and full-stack developer with a decade of experience. He is a co-founder of an AI health-tech company backed by Europe's most prestigious accelerator. Iliyan was previously lead research engineer in the AI Research team at Babylon Health, building and scaling up the AI doctor to millions of users. Before that, he made a massively scalable distributed computing platform and worked as a quant at a hedge fund.

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Alex Baas

Julia Developer
UTC+01:00
Germany
Toptal Member Since April 15, 2021

Alex is a 15+ year engineer specializing in high-performance computing and Agentic AI. He builds "Action-Oriented AI" via autonomous workflows, Model Context Protocol (MCP), and optimized GraphRAG pipelines. Alex bridges complex LLM reasoning with production execution using LangGraph, CrewAI, and robust LLMOps. Holding an INSEAD MBA, he combines deep technical mastery of agentic orchestration with strategic business and project leadership.

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Petr Homola

Julia Developer
UTC+01:00
Ireland
Toptal Member Since May 12, 2026

Petr is a senior back-end and mobile developer with over 15 years of experience designing and building large-scale applications for clients spanning DBaaS providers and fulfillment centers. Petr specializes in Go and Swift, with deep expertise across PostgreSQL, AWS, and related cloud technologies. This combination of language fluency and infrastructure know-how allows him to deliver robust, scalable solutions that perform reliably under real-world demands.

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Vahagn Altunyan

Julia Developer
UTC+04:00
Armenia
Toptal Member Since June 10, 2021

Vahagn is a Julia developer and machine learning engineer with substantial experience in competitive programming and mathematical competitions. He has won gold and two silver medals from the IMC math competition. Solving hard algorithmic problems is his hobby, and serves his clients well on complex projects. He has created a competitive programming problem-solving platform, a source code testing system, and a data collection and annotation system. Vahagn also enjoys developing APIs.

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Sandro Barnabishvili

Julia Developer
UTC+04:00
Georgia
Toptal Member Since September 24, 2018

Sandro holds a BSc and MSc in Computer Science and brings over 15 years of experience in software engineering and 10+ years in machine learning. His core expertise spans NLP, GenAI, MLOps, Big Data, and algorithm design. Sandro has contributed to both large-scale enterprises like Microsoft and Logitech, as well as fast-paced startups, delivering AI-driven solutions across diverse domains.

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Maaz Bin Tahir

Julia Developer
UTC+05:00
United Arab Emirates
Toptal Member Since August 25, 2022

Maaz is a software developer with four years of experience in architecting and implementing complex applications and systems using the latest technologies. He is highly effective in building state management in front-end apps. Maaz has the most experience in building and scaling end-to-end real-time systems, developing REST APIs for transactional back-end systems, and writing client-side SDKs. In Agile teams, he leverages his expertise to create scalable products and roll out features quickly.

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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
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Leading a digital transformation
Building a cross-platform app to be used worldwide
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Drilling into real-time data creates an industry game changer
Drilling into real-time data creates an industry game changer
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How to Hire Julia Engineers 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 Julia expert for your project. Average time to match is under 24 hours.
3

The Right Fit, Guaranteed

Work with your new Julia programmer 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 Julia 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

  • Typically, you can hire Julia developers with Toptal in about 48 hours. For larger teams of talent or full end-to-end project 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 Julia programmer, 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 remote Julia 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 Julia developers for your project.

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

  • You can hire Julia programmers on an hourly, part-time, or full-time basis. Toptal can also manage the project end-to-end based on your specific requirements as part of our Consulting and Services offerings. Whether you hire a Julia developer 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 Julia developers can fully integrate into your existing team for a seamless working experience.

  • We make sure that each engagement between you and your Julia 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 Julia developer who may be a better fit and with whom we will begin a second, no-risk trial.

Toptal Lets You Hire Fast,
With Unparalleled Success

  • Trusted Talent Only

    Trusted Talent Only

    Our talent network is composed of thoroughly vetted professionals who ramp up quickly, function as essential team members, and deliver results.

  • Precise Matching

    Precise Matching

    Our experienced talent matchers specialize in identifying talent that fits your needs. They work to understand your exact requirements and hand-select the best professionals for your project.

  • Seamless Hiring

    Seamless Hiring

    We handle all aspects of billing, payments, and NDAs, streamlining the hiring process so you can focus on innovation, not overhead.

  • No-risk Trial Period

    No-risk Trial Period

    We want to be sure your engagement is a total success, so we offer a no-risk trial period. Work with your new hire for up to two weeks and pay only if you’re satisfied.

  • Effortless Scaling

    Effortless Scaling

    We help you scale your team up or down as needed, with quick and efficient hiring in under 48 hours.

  • Flexible Engagements

    Flexible Engagements

    Our flexible engagement models allow you to choose the engagement type that suits your needs and adjust it anytime: hourly, part time, or full time.

Top Julia Developers Are in High Demand.

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