Referso Jobs

Senior Software Engineer, Go - (Global Recommendations and Ranking, Consumer)

Delivery Hero · Posted Nov 5, 2026

Berlin, Germany
Hybrid
Full-time · Senior

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Own and drive multiple features in our recommendation and ranking services (Go and Python), from discovery through release and operation, including low-latency serving paths and model-serving integrations

Responsibilities

Own and drive multiple features in our recommendation and ranking services (Go and Python), from discovery through release and operation, including low-latency serving paths and model-serving integrations
Drive architectural decisions on the features you build: assess where each system is in its lifecycle, fix architecture deficiencies early, write clear RFCs and ADRs, and build consensus by laying out pros and cons
Break complex, ambiguous initiatives into milestones that deliver impact early and often, and parallelise work where resources allow
Raise the bar on observability, scalability, cost efficiency, security and code quality, resolve vulnerabilities within SLA, and handle on-call incidents with quality post-incident reports
Mentor less experienced engineers, take part in hiring, and partner with data scientists, machine learning engineers and product managers to bring models and experiments safely into production

Requirements

Nice to have: recommendations
Nice to have: ranking
Nice to have: search
Nice to have: personalisation
Nice to have: relevance engineering

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Senior Software Engineer, Go - (Global Recommendations and Ranking, Consumer)

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