Spain Remote (Country) Full-time

EX Squared is hiring a Lead Backend Engineer (Remote - EU)

About the Role

Jobgether is looking for a Lead Backend Engineer to shape the scalable, secure, and reliable infrastructure for our rapidly growing user base. This role is ideal for a backend-focused engineer who thrives on balancing immediate needs with long-term architecture while collaborating closely with product and mobile teams.

What You'll Do

  • Lead the design, evolution, and scaling of backend infrastructure to support rapid growth to millions of daily users.
  • Build and maintain robust, secure, and backward-compatible APIs optimized for mobile clients.
  • Design scalable data models and database schemas to support product expansion.
  • Ensure operational excellence by defining SLOs/SLIs, implementing monitoring, logging, tracing, alerting, and leading incident response and root-cause analysis.
  • Drive security, privacy, and compliance initiatives, including authentication, encryption, and GDPR adherence.
  • Document backend architecture and workflows to enable effective collaboration and onboarding.
  • Collaborate with cross-functional teams, providing clear explanations of trade-offs and architectural decisions.
  • Maintain and improve CI/CD pipelines and Infrastructure-as-Code practices.
  • Contribute to AI-powered features and notification systems that enhance user experiences.

What We're Looking For

  • Proven experience designing and scaling backend infrastructure for large-scale consumer or mobile-first products.
  • Strong proficiency in JavaScript/TypeScript.
  • Hands-on experience in cloud platforms (preferably GCP).
  • Expertise in SQL & NoSQL databases and designing scalable data models.
  • Hands-on experience with CI/CD pipelines, Infrastructure-as-Code, and API versioning strategies.
  • Deep understanding of security, privacy, and compliance best practices.
  • Product-oriented, pragmatic mindset with strong communication skills.
  • Startup-ready: adaptable, iterative, and comfortable making foundational architectural decisions.
  • Data-savvy and reliability-driven, with a focus on operational excellence and measurable performance.

Nice to Have

  • Experience with Firebase (Auth, Firestore, Cloud Functions).
  • Experience with ETL processes.
  • Experience with modern data stack tools (Dagster, dbt, Snowflake).
  • Experience with AI integrations.
  • Experience with silent push notifications.

Technical Stack

  • JavaScript, TypeScript, GCP, Firebase, SQL, NoSQL, CI/CD, Infrastructure-as-Code

Team & Environment

Collaborate closely with product and mobile teams.

Benefits & Compensation

  • Competitive salary package: €70K – €100K + equity.
  • Fully remote work within the European Union, with optional office use and limited quarterly travel.
  • Opportunity to lead and shape backend architecture for a fast-growing, high-impact product.
  • Collaborative, high-performing team culture with quarterly in-person meetups.
  • Significant ownership and influence over technical decisions, infrastructure, and processes.
  • Work on a mission-driven product with measurable impact on millions of users.
  • Flexible work hours with no weekend or night obligations.

Work Mode

This is a fully remote position open to candidates within the European Union.

Jobgether is an equal opportunity employer.

Required Skills
JavaScriptTypeScriptGCPFirebaseSQLNoSQLCI/CDInfrastructure-as-CodeSystem ArchitectureTeam LeadershipAPI DesignMicroservicesCloud InfrastructurePerformance Optimization
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About company
EX Squared

Technology company focused on IT and software solutions

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Job Details
Category backend
Posted 5 months ago