Senior Web Engineer

## Senior Web Engineer Applytime type:
Full time posted on:
Posted Todayjob requisition :
Req
1586939

Senior Web Engineer Country:
** IT STARTS HERE
** Santander () is evolving from
** a global, high-impact brand
** into a
** technology-driven organization**, and our people are at the heart of this journey.
** Together**, we are driving a
** customer-centric transformation
** that values bold
** thinking, innovation**, and the
** courage to challenge
** what’s possible.

This is more than a strategic shift.
** It’s a chance for*
* ** driven professionals*
* ** to grow, learn, and make a real difference**.Our mission is to contribute to help more
** people and businesses prosper**. We embrace a strong risk culture and all our professionals at all levels are expected to take a proactive and responsible approach toward risk management.

Our
** Chief Data & Artificial Intelligence Officer (CDAIO)
** division is building a world-class AI & Data team to make a difference in the lives of over 170 million people worldwide, through one of the largest banks in the world. We are undergoing one of the biggest transformations in our history and technology is at the heart of our strategy. Join our team to play a part in one of the most important technological projects for the financial sector in the world.
** THE DIFFERENCE YOU MAKE
**** CDAIO/ AI TECH
** is looking for a
** Senior Web Engineer
** based in
** Madrid.
** We are seeking a
** Senior Web Engineer
** to build advanced web solutions using
** React
* * and
** Type Script**. You will deliver concrete products — production web apps and
** reusable, published packages/SDKs (npm)** — within the Grupo Santander platform ecosystem, applying solid
** software architecture
** and
** CI/CD
** practices to ensure quality, maintainability, and scalability.

This role works on
** product SDKs** (e.g. an AI chatbot React component) that sit on top of the shared Santander web platform, so the ability to read, integrate with, and reason about
** platform building blocks
** is essential.
** WHAT YOU’LL BRING
** Our people are our greatest strength. Every individual contributes unique perspectives that make us stronger as a team and as an organization. We’re
** enabling teams to go beyond
** by valuing who they are and empowering what they bring.

The following requirements represent the knowledge, skills, and abilities essential for success in this role. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.
** Professional Experience
*** A proven track record of at least 4 years of dedicated experience in web frontend development (React). (Required).
* Experience on projects composed of libraries or that publish packages/SDKs as a product. (Required).
* Demonstrable experience on projects with accessibility requirements. (Required).
* Experience limited to hybrid/mobile wrappers (React Native, Ionic, Cordova) will not be considered as web experience. (Required).
* Backend-heavy full-stack roles where the specific dedication to frontend cannot be determined will not be considered. (Required).
* Personal or freelance projects will not be considered unless carried out in a collaborative team environment. (Required).
** Languages
* ** Native level in Spanish. (Required).
* English — minimum B2 (B2–C1 strongly preferred). This is a strict requirement: all code, JSDoc/TSDoc, commits, PRs, change logs, and platform documentation are written in English, and the SDK/platform is shared across international teams. (Required).
** Hard Skills
**** Global:
*** Mastery of
** Type Script** (strict mode, generics, discriminated unions, utility types, type-safe public API surfaces). (Required).
* Strong command of modern
** JavaScript** (ES2022+, ES modules, async/await). (Required).
* Knowledge of
** visibility and extensibility** / API-surface control (internal vs public boundaries, barrel exports, package.json exports map). (Required).
* Asynchronous and reactive models:
Promises, async/await, Abort Controller, event streams (RxJS or signals a plus). (Required).
* Version control systems, preferably
** Git**. (Required).
* CI/CD tooling:
** Git Hub Actions** (or…