Hire the Top 3% of Freelance DOORS Engineers

Toptal is a marketplace for dedicated DOORS Engineers. Top companies and startups choose Toptal DOORS freelancers for their mission-critical DOORS development projects.

No-Risk Trial, Pay Only If Satisfied.

Hire Freelance DOORS Engineers

Imen Ben Jebara

Freelance DOORS Engineer
TunisiaToptal Member Since January 15, 2021

Imen is a computer engineer with a deep understanding of vehicle architecture and CAN/LIN networks by implementing and configuring ComStack AUTOSAR modules. She developed a fast routing gateway between CAN HS and CAN FD with very high time constraints for Renault-Nissan-Mitsubishi. Imen also excels with CAN FD, Elektobit TRESOS, ARXML, V-Model, C, Automotive SPICE, CANoe, and DOORS. Expert at diagnosis, debugging, and testing, she leaves no stone unturned to deliver exceptional products.

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Jason Haury

Freelance DOORS Engineer
United StatesToptal Member Since July 2, 2021

Jason is a senior back-end developer with 14 years of Python experience. A recent example of his Python work is when Jason created a Python client to interact with Stocktwits (a financial social media site) to scan users' messages for sentiment analysis. Besides having a solid educational background with a master's degree in electrical engineering, Jason's adept at data engineering and analytics from SQL to Pandas.

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Nagarani Ravula

Freelance DOORS Engineer
IndiaToptal Member Since April 11, 2023

Nagarani is a functional safety expert for the ISO26262 compliance standard with more than a decade of experience in the automotive domain. She is skilled in identifying potential safety gaps and carrying out corrective actions. She is familiar with cybersecurity for the ISO/SAE 21434 standard for cybersecurity in the automotive domain. Nagarani is a quick learner and proactive in taking up new challenges.

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Zoltán Tóth

Freelance DOORS Engineer
GermanyToptal Member Since May 20, 2021

Zoltán is a software engineer with over 20 years of professional experience overall, with 15 of them in mobile telecommunications and automotive. He's skilled in modern C++, Linux, client-server protocols of LTE (SIP, RTP), embedded development, AUTOSAR, test automation, and continuous integration. Zoltán has two masters' degrees (in CS and computational engineering), and he focuses on the quality and reliability of his deliveries.

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Burak Ercan

Freelance DOORS Engineer
TurkeyToptal Member Since September 27, 2022

Burak is a senior computer vision engineer and a PhD candidate with 12 years of industrial experience. As an expert in computer vision, deep learning, and software development with C++ and Python, he worked on various projects in large defense companies and AI startups, demonstrating a broad range of technical and soft skills. Burak describes himself as a lifelong learner. His goal is to be a part of impactful applied research and engineering where he can fully demonstrate his skills.

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Diogo Dutra

Freelance DOORS Engineer
CanadaToptal Member Since October 19, 2020

Diogo is a machine learning engineer with a Master of Science degree in aeronautics and expertise in the whole pipeline from data visualization to model deployment. His 14+ years of international experience in research and development for defense, public safety, and aerospace industries allow him to combine new methodologies, like deep learning and computer vision, with traditional ones (e.g., physics, simulation, sensor fusion, Kalman filter, Fourier transform, and signal processing).

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Muhammad Nazakat

Freelance DOORS Engineer
GermanyToptal Member Since January 1, 2021

Muhammad has nearly a decade of experience in software design with in-depth knowledge of the automotive sector. He excels in software requirements analysis, architecture, implementation and coding, and unit and integration testing. He developed software based on AUTOSAR for an ECU Body Control Module (BCM) and implemented software for functional safety applications. Muhammad's background in electrical engineering with a focus on automation makes him an ideal lead for highly technical jobs.

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Claudiu Gigel Sava

Freelance DOORS Engineer
GermanyToptal Member Since October 13, 2020

Claudiu is a tech all-rounder software engineer with strong skills in embedded development. For the past 13 years, he has worked on automotive projects for well-known companies, and he's taken the role of solving complex issues to ensure software delivery on time.

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Mohamed Fathy

Freelance DOORS Engineer
EgyptToptal Member Since May 28, 2022

Mohamed is a senior embedded software engineer proficient in all phases of the software development lifecycle. Skilled in the C programming language and several other frameworks and tools, he has over five years of experience in the automotive industry and microcontrollers programming. Mohamed is a highly organized and detail-oriented professional willing to dive into new and challenging projects.

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Dan Hullinger

Freelance DOORS Engineer
United StatesToptal Member Since December 1, 2023

Dan is a highly qualified electrical engineer with 25 years of experience in hardware and software design, embedded control system development, and functional safety. His professional background granted him solid expertise in vehicle electrification, medium-heavy trucks, and construction equipment. Dan is known for his reliability, attention to detail, and excellent communication skills. He upholds strong personal ethics and integrity, making him a valuable asset to any team or project.

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Emra Aşkaroğlu

Freelance DOORS Engineer
TurkeyToptal Member Since February 22, 2022

Emra's been working as a software engineer for more than 13 years, building web, mobile, and desktop applications in startup environments and large corporate companies. Over the last three years, he worked as the CTO of a company that serves excellent quality engineering service for its customers. Emra's contributed to and led several teams, using Agile methodologies throughout his career, and gathering experience working remotely for almost one year.

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... 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.

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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 DOORS Engineers 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 DOORS Engineer for your project. Average time to match is under 24 hours.

The Right Fit, Guaranteed

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


  • How are Toptal DOORS Engineers different?

    At Toptal, we thoroughly screen our DOORS Engineers 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 DOORS Engineers in less than 48 hours through Toptal?

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

  • What is the no-risk trial period for Toptal DOORS Engineers?

    We make sure that each engagement between you and your DOORS Engineer 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 DOORS Engineers Are in High Demand.

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