Sonas: Fullstack Engineer

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Published by Coupea on December 9, 2025

Who are we?

Sonas is an all-in-one solution for wedding venue owners, designed to support marketing, sales, and events teams so they can consistently deliver perfect weddings. As we continue to grow, we’re looking to expand our team to elevate our offerings and improve the user experience.

Who are we looking for?

We’re seeking a passionate Full Stack Developer who enjoys solving problems and delivering solutions for users. Ideally, you’ll have a solid background with a few years of experience, but if you’re still growing your skill set and eager to learn, we’d love to hear from you.

This is a full-time role. You can work remotely within EU time zones or hybrid from our Madrid office.

You’ll work with the latest technologies, troubleshoot client issues, develop new features, and occasionally dive into DevOps when needed. We’re a small, tight-knit team, so everyone shares onboarding and support responsibilities, keeping us connected to our users.

Must-Have Skills:

At least 2 years of work experience with NodeJS (4 years preferred).
Proficiency in MongoDB query writing and index creation, with at least 1 year of experience (2 years preferred).
2 years of experience with TypeScript (4 years preferred).
Solid grasp of JavaScript (2+ years) including documentation and test writing (4 years preferred). Bonus points if you know Playwright or Jest.
Experience with HTML, CSS, and frameworks like Bootstrap.
Ability to use git to create flow, not chaos.

Nice-to-Have Skills:

Familiarity with MeteorJS.
Comfortable with AWS services like EC2, Lambda, SNS, and S3.
Experience integrating with payment processors like Stripe.
Basic knowledge of accounting software like Xero or QuickBooks.
Experience building APIs and integrating with automation platforms like Zapier or Make.
Exposure to React, Vue, or Svelte (we currently use Blaze, but we plan to migrate).

And what about English?

English is our team’s working language, so you’ll need to be comfortable communicating in English day-to-day. We’re not looking for perfection! If you’re proficient and willing to improve, that works for us.

What’s in it for you?

We offer a flexible work environment, where you will contribute on how features are designed and built, plus the freedom to shape your role as the company evolves.

Compensation: €35-45K gross annual (if full-time in Spain). Higher rates available for independent contractor/autónomo arrangements.
Higher salaries are reserved for candidates with 4+ years of full-stack experience.
Less-experienced candidates will start closer to the lower end, with opportunities for growth as they develop.

How to apply?

We know you’re busy and probably applying to many jobs, so thanks for reading this far! To apply, simply use the Polymer link above. We look forward to hearing from you!

To apply: https://weworkremotely.com/remote-jobs/sonas-fullstack-engineer