Hire Europe’s Top 3% of Freelance React Developers

UPPER is a marketplace for Europes' top Freelance React Developers. Top companies and start-ups work with UPPERs React Developers to augment their mobile development teams and achieve their business needs.

Hire Top Freelance React Developers

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UPPER - Hire top freelance developers in 3 days.

Real People. Real Skills.

We seek out and select the most experienced freelance react developers across Europe.

Max Schulz - Senior Full Stack Engineer

Vlad Cazacu

Senior Full Stack Engineer

Vlad has more than 11 years of professional experience in software engineering and engineering management focusing on web technologies. He started as a React developer and worked with startups and corporates in multiple industries, from automotive to FinTech. Vlad enjoys tackling difficult architectural challenges and likes to take an active role in development as well, whenever it’s possible.

previously at

Auto1 Group logo



Work with Vlad
Alexandru Adascalitei - Senior Full Stack Engineer

Alexandru Adascalitei

Senior Full Stack Engineer

Alex is a Senior React Developer who has been working with web technologies for the past 10 years. He started working with Adobe Flash & Flex (way back when they were popular) before moving to JavaScript and UI/UX Design, and now to SPA frameworks like React.js and Vue. In recent years, Alex has been working on projects that range from micro-sites for various brands, to complex web applications for startups.

previously at

Verimi logo



Work with Alexandru
Gabriel Totoliciu - Senior Full Stack Engineer

Gabriel Totoliciu

Senior Full Stack Engineer

Gabriel is a Senior JavaScript Engineer that had multiple hats like Full Stack Engineer, JavaScript Engineer, Front-end Engineer and React Developer. He started as a developer since 2007, working with both small startups such as Greenly and big US groups such as McDonald's. Gabriel likes to state that he writes JavaScript for servers, personal computers, mobile devices and gadgets. He makes them interact with each other and then expose pretty interfaces for the humans.

previously at

McDonalds logo



Work with Gabriel
Bogdan Soare - Senior React.js Engineer

Bogdan Soare

Senior React.js Engineer

Bogdan is a senior react developer with over 7 years of experience in the field. Over the course of his career, he has been working on a variety of products and industries from content platforms for fast-food chains over E-Commerce platforms for coffee brands to a data visualization tool for a Big5 consultancy. Bogdan is an excellent and incredibly fast problem solver and very proactive in his communication. He has a great sense for detail, user-centric UI and crafting pixel perfect web experiences.

previously at

Deloitte logo



Work with Bogdan
Vladan Petrovic - Senior Java Engineer

Vladan Petrovic

Senior Java Engineer

Vladan is pragmatic full-stack software architect with a strong foundation in Computer Science, React development and a good set of engineering principles. With 13 years of professional experience, he loves solving complex and challenging problems, and building great products from scratch. As a full-stack and mobile developer, he has worked on projects ranging from enterprise Portal/ERP solutions, e-banking systems for Swiss banks to managing product architecture and development for global startups and clients.

previously at

Effit logo



Work with Vladan

How it works

How to Hire Freelance React Developers through UPPER

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Talk With

An Expert

Our domain expert clarifies the roles together with you, from stack to goals and more.

Talk to experts at UPPER

Get Top

The expert matches our pre-vetted freelances with your role to find the ideal fit.

Our experts match you with vetted freelancers

Interview and

Meet your future team member(s) over an interview and start with a trial period.

Start with a trial period. No lock-in.
UPPER Talent
⏰ Speed
<10 days
~3 months
💸 Cost of Hiring/Price
€0 cost to hire / flat fee
€30K to hire each employee, high management costs
⭐ Quality of Talent
High, only experienced talent
Dependent on ability to hire
🌍 Access to Tech Talent
Wide, active sourcing included
Limited to applicant inflow and direct network
🔗 Vetting
Multi-level expert vetting for soft and technical skills
Conditional on in-house capabilities
🚀 Scalability
High, on demand
Very slow, time intensive
✅ Role fit
High, expert matching
Conditional on access
⚠️ Risk
None, trial period, no lock-ins, no penalties

by Experts


Start Fast.

Scale On

The Go.

Managed Service.
Platform Powered.

Service Fee.

No Hidden Costs.


UPPER supports us with quick action and great collaboration. They helped us find top engineers almost on the spot – an ability that is invaluable for us as a company in hyper- growth. UPPER is definitely the partner we are counting on.

Andrea Franke - Director of Engineering / Product Operations at Gorillas

Andrea Franke
Director of Engineering / Product Operations

Frequently Asked Questions

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Europe’s top product & tech professionals