Hire the Top 3% of Freelance Human Machine Interface Experts

Toptal is a marketplace for dedicated Human Machine Interface (HMI) experts. Top companies and startups choose Toptal Human Machine Interface freelancers for their mission-critical development projects.

No-Risk Trial, Pay Only If Satisfied.

Trusted by leading brands and startups

Hire Freelance Human Machine Interface Experts

Jonathan Poulter

Freelance Human Machine Interface Expert
United States
Toptal Member Since February 2, 2024

Jon is a creative and critically-thinking electromechanical engineer with 12 years of experience in diverse industry segments. He has a proven ability to combine logical thinking, problem-solving, and strong programming with time management and leadership qualities. Jon has extensive experience in testing and on-schedule commissioning of systems for everything from a NASA mission to industrial automation projects, including an AGV system at The Ohio State University Wexner Medical Center.

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Nirav Darji

Freelance Human Machine Interface Expert
Toptal Member Since May 5, 2023

Nirav is a senior Ignition developer with nearly eight years of experience. He is an expert in design, software development, PLC, HMI, SCADA, and Industry 4.0 (I4.0). He has developed numerous applications using Ignition, RSLogix 50, Studio 5000, FactoryTalk, WPLSoft, and DOPSoft. Nirav has significant experience in database software such as MySQL, MS SQL, and SQL Server Reporting Services (SSRS).

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Roman Vlasov

Freelance Human Machine Interface Expert
Toptal Member Since December 8, 2020

Roman worked at Meta, has 15 years of experience in 3D and VR software development, and a Ph.D. in computer science. He has led and worked on projects of all sizes, from scoping requirements to launch, primarily focusing on VR/AR, games, 3D interactive applications, CAD, and computer vision. With expertise in various languages and platforms, like C++, Java, and C#, Roman has designed and developed cutting-edge products, including VR arcade games, facial recognition, and advanced medical imaging.

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Deepthi Gopinathan

Freelance Human Machine Interface Expert
Toptal Member Since February 21, 2023

Deepthi is a control systems engineer with expertise in implementing control system design solutions, including network architecture, IO configuration, and Rockwell and Siemens programmable logic controller (PLC) programming. She's also highly proficient in Ignition SCADA, expert control and supervision (ECS) development, and project management for new and existing control systems. Deepthi carried out functional and factory acceptant testing and supported commissioning.

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Ian Anderson

Freelance Human Machine Interface Expert
Toptal Member Since December 18, 2023

Ian is a creative and skilled developer who specializes in the development of software for embedded devices. He has 16 years of industry experience in the automotive sector in the Metro Detroit area. He holds a degree in electrical engineering, focusing on computer and software engineering. Ian has experience writing production-quality, saleable embedded software sold at high volumes on the consumer market.

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Ferhat Abdullahoglu

Freelance Human Machine Interface Expert
Toptal Member Since April 12, 2022

Ferhat is a dedicated iOS developer with a multidisciplinary background. He builds end-to-end solutions for native apps and has vast experience working with Laravel, PHP, Go on the back end, and Swift for all Apple platforms. A detail-oriented believer in the power of collaboration and communication, Ferhat works closely with product, design, and UX teams to deliver an efficient product.

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Jorge Luis Oliverio

Freelance Human Machine Interface Expert
Toptal Member Since July 22, 2022

Jorge is a C and C++ developer with more than 10 years of experience building real-time control and automation applications on different operating systems and embedded controllers. He has extensive experience in Ethernet-based protocols for real-time communications such as UDP and EtherCAT.

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Tarun Sharma

Freelance Human Machine Interface Expert
United Kingdom
Toptal Member Since March 13, 2023

Tarun is a software architect who has worked with Fortune 500 clients and enterprise-level companies like Nestle and Deloitte. He is also a result-oriented Citect SCADA Certified Engineer experienced in leading industrial control systems, SCADA, energy management systems (EMS), and critical infrastructure solution strategy development. As an IRCA Certified ISO 27001 Lead Auditor, Tarun has expertly consulted and audited based on the said ISO framework.

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Erhan Okuyan

Freelance Human Machine Interface Expert
Toptal Member Since June 28, 2022

Erhan is a software developer with over 15 years of expertise in various facets such as embedded programming, computer graphics, network programming, and video processing. As a developer, he has created software modules regarding different areas for several defense projects, including the famous ANKA drones. Erhan has an academic background with a PhD in computer engineering. His research encompassed high-performance computing, volume visualization, and computational physics.

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Timothy Roe, Jr.

Freelance Human Machine Interface Expert
United States
Toptal Member Since September 8, 2021

Tim is an enterprise IT consultant and full-stack software developer who's worked with local businesses and nonprofits since becoming a freelancer in 2012. An independent thinking and goal-oriented person, working to achieve the business goals of his customers and employer beyond their expectations. Tim enjoys working with his clients, helping them achieve their businesses' goals, and using new high-end technologies to push their applications forward.

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Miguel Angel Pulido Rodriguez

Freelance Human Machine Interface Expert
Toptal Member Since March 1, 2022

Miguel is a full-stack developer with over a decade of experience in software and hardware development, using .Net, Python, Java, LabVIEW, PLC, microcontrollers, and databases. He excels with high analytics, programming logic, and automation projects. Miguel has designed management systems for humidity, temperature, ventilation, CO2 levels, and pipeline pressure. Roles have included software engineer, integration developer, tech lead, and automation engineer.

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Discover More Human Machine Interface Experts in the Toptal Network

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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
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Conor Kenney
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Drilling into real-time data creates an industry game changer
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


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


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


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


How to Hire Human Machine Interface Experts Through Toptal


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.

Work With Hand-Selected Talent

Within days, we'll introduce you to the right Human Machine Interface expert for your project. Average time to match is under 24 hours.

The Right Fit, Guaranteed

Work with your new Human Machine Interface expert for a trial period (pay only if satisfied), ensuring they're the right fit before starting the engagement.


  • How quickly can you hire with Toptal?

    Typically, you can hire a Human Machine Interface expert 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 Human Machine Interface expert, 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 Human Machine Interface expert?

    To hire the right Human Machine Interface expert, 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 Human Machine Interface experts for your project.

  • How are Toptal Human Machine Interface experts different?

    At Toptal, we thoroughly screen our Human Machine Interface experts 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 a Human Machine Interface expert with Toptal, you’ll always work with world-class, custom-matched Human Machine Interface experts ready to help you achieve your goals.

  • Can you hire Human Machine Interface experts on an hourly basis or for project-based tasks?

    You can hire a Human Machine Interface expert 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 Human Machine Interface experts can fully integrate into your existing team for a seamless working experience.

  • What is the no-risk trial period for Toptal Human Machine Interface experts?

    We make sure that each engagement between you and your Human Machine Interface expert 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 Human Machine Interface Experts Are in High Demand.

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