Senior Frontend Engineer — Madrid | Scalable UI & React

Auctane; Madrid; On-site; EUR 47,000 - 68,000; Full time

Benefits offered by this job

Flexible salary benefits

Private health insurance

26 days holiday

Mac or Windows gear

Annual salary review

Training (€2000/year)

Learning resources

Wellness program

Volunteer day

Gym subsidy

Job summary

Auctane is seeking a Senior Software Engineer in Madrid to design, develop, and maintain sophisticated user-facing apps and supporting backend services. You will own end-to-end feature implementation, optimize performance, and ensure robust API integration within a cross-functional team.

The role emphasizes modern frontend architecture, code quality, accessibility, and collaboration with UI/UX designers, product managers, and backend engineers.

Qualifications

• Experience designing and developing modern web applications and backend services.
• Proficiency in frontend concepts, state management, algorithms, and data structures.
• Continuous focus on software architecture design and product development.
• Strong automation mindset to save time and effort.
• Designing and integrating RESTful/GraphQL APIs and managing deployment pipelines.

Responsibilities

• Develop and maintain complex user-facing applications and backend services.
• Contribute to end-to-end architecture discussions and implementation.
• Collaborate with product, UX, and infrastructure teams to ensure scalable solutions.
• Mentor junior engineers through code reviews and knowledge sharing.
• Participate in testing, debugging, and performance optimization.

Skills

Frontend concepts

State management

Algorithms & data structures

API design

Agile methodologies

DevOps practices

English fluency

Tools

React

TypeScript

SQL / RDBMS

AWS

CI/CD

Job description

Auctane is seeking a Senior Software Engineer in Madrid to design, develop, and maintain sophisticated user-facing apps and supporting backend services. You will own end-to-end feature implementation, optimize performance, and ensure robust API integration within a cross-functional team.

The role emphasizes modern frontend architecture, code quality, accessibility, and collaboration with UI/UX designers, product managers, and backend engineers.