Senior Recommendation Systems Engineer

🔥 1 hour ago

🇵🇱 Poland – Remote

⏰ Full Time

🟠 Senior

⚙️ Systems Engineer

👻 Ghost score 15%

What it means: the chance that no one is really hiring for this job.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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matchmatch

WebsiteLinkedInAll Job Openings

2 - 10 employees

🎯 Recruiter

🤝 B2B

☁️ SaaS

Recruitment • B2B • SaaS

matchmatch is a premium recruitment firm focused on VC-backed startups in the EU and US. They provide executive search for C-suite and VP-level hires, technical engineering hiring (founding engineers, tech leads, AI/ML specialists) with deep technical vetting, go-to-market and revenue hires (sales, marketing, growth, customer success), and embedded recruitment where a recruiter joins the client's team for 3–6 months. They specialize in early-stage companies (pre-seed to Series A) with teams of 2–70 and funding between $500K–$10M, covering hiring across 15+ countries and cities like Berlin, London, and San Francisco. Metrics include 250+ people recruited, 75 vacancies closed last year, 40 days average time to fill. The team comprises operators and startup veterans with roles like Head of Talent & People, Sourcing Lead, and Talent Sourcer.

📋 Description

• Design and build personalized recommendation systems, semantic search and similar-fragrance discovery • Develop candidate retrieval, ranking and re-ranking approaches • Solve cold-start challenges and identify useful user signals • Build data pipelines and ML-powered services that support recommendations • Define evaluation metrics, run experiments and measure recommendation quality • Make practical architecture decisions and take systems from idea to production • Contribute to backend and product engineering when needed • Work directly with the founders, engineers and product team • Help define the recommendation architecture and decide what to build • Use AI coding agents such as Claude Code and Codex as a core part of the development workflow

🎯 Requirements

• Hands-on experience building or improving recommendation systems, search ranking or personalization in production • Strong understanding of retrieval, ranking, ML models and experimentation • Ability to design and own systems end-to-end, not just individual models • Solid software engineering and backend development skills • Experience working with user behavior data and measuring product impact • Product mindset and ability to make independent technical decisions • Comfort working in a small team with evolving priorities • Interest in AI-first engineering and using coding agents in daily development • Experience in e-commerce, marketplaces, consumer products or discovery platforms is a plus • Willingness or ability to use AI coding agents such as Claude Code and Codex in daily development

🏖️ Benefits

• Equity / share in the long-term success of the company • Remote work flexibility • Office available for local teammates in Warsaw

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