BackEnd Engineer: Experiments

Constructor
Barcelona
Workplace: RemoteFull timeUSD 80,000 - 110,000 annuallyFunction: Software EngineeringSkills: ["Ownership","Empathy","Openness","Curiosity","Continuous improvement"]

Build and maintain backend services for experiment assignment, exposure logging, and report generation. You’ll improve scalability, performance, and reliability of data-heavy experimentation pipelines, and add UI-facing features to help users launch experiments and interpret results. Work closely with Search/Recommendations, ML/DS partners, and customer-facing teams, and rotate on weekly on-call to investigate issues and answer internal questions.

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FursaFursa
Constructor
Constructor
4 weeks ago

BackEnd Engineer: Experiments

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Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 8 hours agoStatus: Live

Job Summary

Build and maintain backend services for experiment assignment, exposure logging, and report generation. You’ll improve scalability, performance, and reliability of data-heavy experimentation pipelines, and add UI-facing features to help users launch experiments and interpret results. Work closely with Search/Recommendations, ML/DS partners, and customer-facing teams, and rotate on weekly on-call to investigate issues and answer internal questions.
Location: Barcelona
Workplace: Remote
Employment Type: Full time
Job Function: Software Engineering

Key Responsibilities

  • •Build and maintain backend services for experiment assignment, logging, and report generation.
  • •Improve scalability, performance, and reliability of experiment reporting pipelines.
  • •Add product-facing features to the UI to help users launch experiments and interpret results.
  • •Take technical ownership by shaping solutions, breaking down work, and driving execution with the team.
  • •Participate in a weekly on-call rotation to investigate occasional issues and answer internal questions.

Pay and Benefits

Salary: USD 80,000 - 110,000 annually
Equity and Bonus:Equity
Perks:Paid LeaveRemote WorkHome OfficeLearning Budget

Key Requirements

  • •Strong experience building and owning production backend services in Python.
  • •Experience with monitoring, alerting, and debugging user-facing systems.
  • •Strong SQL skills and confidence working with data-heavy systems (metrics, logging, analytics).
  • •Ability to ship maintainable software with tests, code review, and incremental delivery.
  • •Ability to take ownership and turn ambiguous problems into an executable technical plan.
Experience:Ecommerce
Skills:OwnershipEmpathyOpennessCuriosityContinuous improvement
Tech Stack:PythonFastAPIPostgreSQLPlotly DashPySparkDatabricksAWSCloudWatchSentrySpark

Company Brief

Constructor
Provides an AI-powered site search and product discovery platform for e-commerce and retailers, improving search relevance, recommendations, personalization, and merchandising to boost conversions and average order value.
Industry: Enterprise Software
Company Size: Medium (51 to 250 employees)
Growth: Growth Stage Startup
Headquarters: San Francisco, United States
WebsiteLinkedIn