Senior Fullstack Developer

October 1, 2026

Remote (within country)

Senior

Madrid

Worth knowing

English is required
C1 level

Description

A strategic technology partner is looking for a Senior / Staff Fullstack Developer to lead architecture decisions and build robust solutions in enterprise environments. The role spans defining system architecture, setting engineering best practices across the stack, and producing key technical artifacts such as diagrams, documentation and ADRs. The candidate works autonomously with stakeholders and engineering teams, with a competitive salary of 48,000€–50,000€ and 100% remote work from Spain.

Responsibilities

Define system architecture, evaluating monolith vs microservices models, API design and scalable data schemas
Establish and uphold best practices for software development, testing and code review across the stack
Create key technical artifacts including architecture diagrams, technical documentation and Architecture Decision Records (ADRs)
Build prototypes and proofs of concept to validate innovative approaches before production implementation
Collaborate with stakeholders and engineering teams to analyze requirements and turn complex challenges into reliable architectures

Requirements

More than 10 years of proven software development experience focused on React and Node.js
Demonstrated experience in large-scale enterprise projects, managing technical trade-offs and performance optimization
Fluent advanced English (C1), able to debate solutions and articulate technical decisions clearly
Ability to drive technical solutions autonomously, owning them end-to-end without pre-digested specifications
Experience mentoring other engineers and raising the teams technical standard
Solid knowledge of modern cloud computing patterns, security and advanced web application optimization

Conditions

Competitive salary range: 48.000€ - 50.000€ SBA depending on experience and technical fit
100% remote work from Spain with standard schedule 09:00 to 18:00
Culture based on autonomy, technical rigor and professional transparency
Participation in global corporate projects of high technical complexity with strategic visibility

Similar jobs

Similar in meaning, not just matching keywords

This device does not meet the site requirements

What may not work

Senior Fullstack Developer

Job summary

Worth knowing

Description

Responsibilities

Requirements

Conditions

Similar jobs

Job summary

Similar jobs

Senior Fullstack Developer

Job summaryAnalysis and summary of the descriptionGreat [data-chart=chart-_R_39f1binpfiv6abqaqlb_] { --color-score: var(--success); } .dark [data-chart=chart-_R_39f1binpfiv6abqaqlb_] { --color-score: var(--success); } 82

Job summary

Worth knowing

Description

Responsibilities

Requirements

Conditions

Similar jobs

Job summaryAnalysis and summary of the descriptionGreat [data-chart=chart-_R_39f1binpfiv6abqaqlb_] { --color-score: var(--success); } .dark [data-chart=chart-_R_39f1binpfiv6abqaqlb_] { --color-score: var(--success); } 82

Job summary

Similar jobs