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# Software Engineer - santander

- **Company:** Jr France
- **Location:** Cantabria, Spain (Remote available)
- **Contract:** Permanent contract
- **Skills:** Query Performance, Application Programming Interfaces (APIs), Relational Databases, PostgreSQL, Node.Js, Operational Databases, Prism (Software), Next.js, Software Engineering, SQL Databases, TypeScript, Management of Software Versions, Google Cloud, Domain Model
- **Published:** September 6, 2026
- **Apply:** https://eurojobs.com/jobs/26339146/apply

## About the Role

* 4+ years of professional software engineering experience shipping production software
 * Strong TypeScript and SQL. Our stack is TypeScript on Node 22, Next.js, Prisma, and Postgres, running on Google Cloud Run
 * Real relational database work: schema design, query performance, and migrations you have run against production data
 * Experience building interfaces people use as a working tool all day, where density, keyboard use, and speed matter
 * Experience building and maintaining APIs that another company depends on
 * Sound judgment about testing, observability, and what deserves an alert at three in the morning
 * Comfort in a regulated fintech environment where correctness matters more than speed of the first draft
 * English proficiency required

## Description

An engineer who wants to build the product itself: the case management platform bank operations teams work in all day, the APIs their systems call, and the data model underneath both. Our agents decide the disputes. You will build the platform they run on., * Own product surfaces end to end, from the data model through the API to the interface a dispute analyst works in all day

 * Design the domain model for disputes, evidence, case history, and scheme deadlines, and write the migrations that move it forward on live client data
 * Build and maintain the public API banks integrate with, including versioning, authentication, and contracts that hold once a client is live
 * Build the reporting that shows a bank what its dispute operation costs: volumes, recovery rates, time per case, and where the queue is stuck
 * Keep the platform fast, observable, and auditable, down to what happened on a single case two years ago
 * Take production ownership: you design it, ship it, watch it break, and fix it
 * Use coding agents as a normal part of your daily workflow


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