Senior Backend Engineer Job at Fever (Madrid or Barcelona)

Senior Backend Engineer

Fever

Location:
Spain , Madrid or Barcelona

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

50000.00 - 70000.00 EUR / Year

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Job Description:

We're looking for Software Backend Engineers to join our Data Department, developers with strong backend engineering skills and a passion for building the services and infrastructure that power critical systems for users and partners. You will work at the intersection of software engineering, AI and business automation, helping turn insights and models into reliable, scalable systems used across Fever.

Job Responsibility:

Architect and Build: Design, implement, and maintain scalable microservices using Python
Master the Event Stream: Build robust, event-driven flows with Kafka
Integrate at Scale: Design fault-tolerant integrations with third-party ecosystems
Bridge OLTP and OLAP: Work at the intersection of transactional applications and analytical data
Productionize Data Capabilities: Partner closely with Data Science, Machine Learning, and Data Engineering teams
Elevate the Bar: Lead thorough code reviews, write RFCs for key technical decisions, and mentor mid-level engineers

Requirements:

Python Proficiency: confident working deeply in Python
Architecture Patterns: comfortable applying Hexagonal Architecture
Database Polyglot: strong SQL fundamentals
Communication: communicate clearly in English across audiences
Pragmatic mindset: balance quality with impact

Nice to have:

AdTech/MarTech Experience: Familiarity with APIs from major marketing or CRM platforms
Infrastructure as Code: Experience defining infrastructure using Terraform or AWS CDK
Data Engineering Crossover: Experience with data pipelines, Airflow, dbt, or data modeling
ML & Internal Products: Experience building data or ML-powered internal services
Production Engineering: Experience with containerization and orchestration
Open Source: A history of contributing to open-source projects

What we offer:

Responsibility from day one and professional and personal growth
Opportunity to have a real impact in a high-growth global category leader
A compensation package consisting of base salary and the potential to earn a significant bonus for top performance
Stock options plan
40% discount on all Fever events and experiences
Health insurance and other benefits such as Flexible remuneration with a 100% tax exemption through Cobee
English / Spanish Lessons
Wellhub Membership
Possibility to receive in advance part of your salary by Payflow

Additional Information:

Job Posted:
January 16, 2026

Employment Type:

Fulltime

Work Type:

Hybrid work

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