Hire Promise developers

Rapidly streamline async JavaScript tasks. Promise devs improve your app’s responsiveness—onboard quickly this week.

Hire Promise developers now

1.5K+

fully vetted developers

24 hours

average matching time

2.3M hours

worked since 2015

Hire remote Promise developers

Developers who got their wings at:

Testimonials

Gotta drop in here for some Kudos. I’m 2 weeks into working with a super legit dev on a critical project and he’s meeting every expectation so far 👏

Francis Harrington

Founder at ProCloud Consulting, US

I recommend Lemon to anyone looking for top-quality engineering talent. We previously worked with TopTal and many others, but Lemon gives us consistently incredible candidates.

Allie Fleder

Co-Founder & COO at SimplyWise, US

I've worked with some incredible devs in my career, but the experience I am having with my dev through Lemon.io is so 🔥. I feel invincible as a founder. So thankful to you and the team!

Michele Serro

Founder of Doorsteps.co.uk, UK

View more testimonials

How to hire Promise developers through Lemon.io

Place a free request

Fill out a short form and check out our ready-to-interview developers

Tell us about your needs

On a quick 30-min call, share your expectations and get a budget estimate

Interview the best

Get 2-3 expertly matched candidates within 24-48 hours and meet the worthiest

Onboard the chosen one

Your developer starts with a project—we deal with a contract, monthly payouts, and what not

Hire with confidence

Testimonials

“

Going step further to find a right fit.

I was impressed by the detail with which the feedback was taken and selection of candidates provided to fit our startup. not a lot of firms care about the details, but they are doing a phenomenal job to find the right fit. would recommend anyone at the early stage as its extremely important to get the right candidates who define the company culture

Darshan Sonde

“

If your looking to find top developer resource, Lemon.io is the place.

Lemon.io has been a game changer for us. Speed, clarity, and quality were there from day one, but what really impressed me was how much they care about getting the right fit, not just filling a role.

We had some specific requirements, and the candidates surfaced were consistently high quality and well aligned. The team checked in regularly, handled onboarding smoothly, and genuinely went the extra mile to keep things simple.

It’s rare to find a service that combines great talent with great people. Lemon.io absolutely does both, and we’ll be continuing to work with them. Diana is a superstar.

Rashid Hussain

“

Great platform for finding vetted developers.

Lemon.io made it easy to connect with skilled developers quickly. The matching process was efficient and the support team was helpful throughout. The quality of developers is excellent thanks to their thorough vetting process. Highly recommend for startups needing reliable talent fast.

Tarik

“

Lemon provides access to great talent. Their platforms are good and I’ve found my account rep (Alina) to be super helpful and knowledgable.

Chris Freeberg

“

Lemon cares a tremendous amount about finding high quality developers that are the right long term fit. We had some specific requirements and Iryna was able to find some great options that were all really qualified. They checked in several times during the engagement and made sure the start and kickoff for the dev was well handled. Will be planning on working with them well into the future.

Grant Wilkinson

“

Superb support from day 1. Speed, clarity in communication, quality of candidates surfaced, going the extra mile to simplify things, making the entire process as easy as possible.

Special shoutout to Diana Tereshchenko who is fantastic and I was lucky to work with her.

Lemon.io is a game changer, for any founders but especially first-time founders like me.

Chris Lavoie

“

Everyone I have met at Lemon has been great. They’re responsive, helpful and transparent and the entire experience has been a pleasant one. I would recommend.

Barrett Daniels

“

Building our tech startup would not have been possible without Lemon.

We’ve been working for ~1.5 year with one of their full stack engineer from Brazil, Matheus, whom we strongly recommend. As 2 co-founders looking for moving our prototype product to a production level, Lemon has been amazing at guiding us through the selection process and then ongoingly whenever we had any questions or requests (thank you Andrew Bondar) – definitely recommend.

Baptiste

“

Absolutely love lemon.io. Their engineers are very high quality, really appreciate how lemon.io makes sure they meet employers standards and also love the customer support we received during the process. Highly recommended.

Mira Boora

Our clients

Case study

What we do for you

Sourcing and vetting

All our developers are fully vetted and tested for both soft and hard skills. No surprises!

Expert
matching

We match fast, but with a human touch—your candidates are hand-picked specifically for your request. No AI bullsh*t!

Arranging cooperation

You worry not about agreements with developers, their reporting, and payments. We handle it all for you!

Support and troubleshooting

Things happen, but you have a customer success manager and a 100% free replacement guarantee to get it covered.

Hire with confidence

FAQ about hiring Promise developers

Where can I find Promise developers?

Multiple resources can help you in hiring of experienced Promise developer: Indeed, Glassdoor or LinkedIn are the most popular job-search websites. You can also expand your search and use developer communities (GitHub, Stack Overflow), social media platforms, or recruitment agencies.

Screening through applications and interviewing hundreds of people while keeping the right criteria in mind can be overwhelming. If you would like to be quickly connected with the right fit for your project without spending time on CV screening and interviewing, check Lemon.io

What is the no-risk trial period for hiring Promise developers on Lemon.io?

You can always test Promise developers during the no-risk trial period, an option that allows you to check how the developers complete your tasks. The period consists of up to 20 hours, which is definitely enough to determine if the specialist is the right fit for your project.

Are you not happy with your current developer? Lemon.io offers a zero-risk replacement guarantee: we will provide you with a new Promised developer if needed. It hasn’t happened to us before, but we promise to do it if needed.

Is there a high demand for Promise developers?

Although a specialized “Promise developer” job title does not generally exist, Promise has been a core part of JavaScript since 2015 and is definitely in high demand. Promises are essential for handling asynchronous operations like API requests, file operations, and more.

They are also extensively used in the Node.js environment, which definitely makes them crucial in JS development. There is no doubt Promises technique will remain high as the industry continues to move towards more asynchronous, event-driven architectures.

How quickly can I hire a Promise developer through Lemon.io?

Our main goal is to make the hiring process easy for each of our clients, so we usually provide the list of experienced Promise developers within 24-48 hours of starting the process. Of course, depending on the nature of your hiring process and how many rounds of interviews you need, this can take up to 8 additional days before making an offer. Still, many of our clients onboard their developers within a week.

What are the main strengths of Lemon.io’s platform?

The main strengths of our Lemon.io platform are:
1. We are extremely fast: in most cases, the clients get their first bunch of candidates within 48 hours and choose the one they want to work with among those 1-3 devs!
2. It doesn’t matter whether a client is looking for a contractor on a subscription basis or wants to hire directly; we can find candidates for both options!
3. Administrative duties will be handled entirely by Lemon.io, freeing you and your company up for more important tasks.
4. Should the specialist not fit your project, we will immediately provide a replacement.