Senior Full-Stack Engineer — Hybrid (Barcelona)

Ersilia; Barcelona; Hybrid; EUR 70,000 - 110,000; Full time

Job summary

Ersilia, based in Barcelona, is seeking a Senior Full Stack Engineer to design, build, and own product features across frontend and backend systems. You will collaborate with tech leadership and cross-functional teams to deliver high-quality software used by customers daily.

The role emphasizes delivery, quality, and collaboration, with an opportunity to influence technical decisions and work across React, Node.js, Typescript, PostgreSQL, and AWS.

Qualifications

• 4+ years of experience building production web applications.
• Strong experience with React, Node.js, and Typescript.
• Solid knowledge of relational databases (PostgreSQL).
• Experience across the full product lifecycle.
• Ability to work autonomously and in a team.
• English fluency; Spanish is a plus.

Responsibilities

• Design, build, and maintain fullstack features across products.
• Collaborate with Product and Design to translate requirements.
• Ensure code quality through testing, reviews, and best practices.
• Contribute to technical discussions and codebase improvements.
• Deliver high-quality software used by customers daily.

Skills

React

Node.js

Typescript

PostgreSQL

AWS

Fullstack development

Team collaboration

English + Spanish

Job description

Ersilia, based in Barcelona, is seeking a Senior Full Stack Engineer to design, build, and own product features across frontend and backend systems. You will collaborate with tech leadership and cross-functional teams to deliver high-quality software used by customers daily.

The role emphasizes delivery, quality, and collaboration, with an opportunity to influence technical decisions and work across React, Node.js, Typescript, PostgreSQL, and AWS.