Junior ML Engineer — tabular + LLM features

Vistula Credit Tech is hiring a Junior Junior ML Engineer — tabular + LLM features on the Risk ML team (Hybrid · Warsaw, Poland). This is a hands-on role in LLM & generative AI—not a generic “AI enthusiast” post.

You will own LLM features, retrieval, agents, and evaluation end to end: problem framing, offline evaluation, safe rollout, and iteration from production signals. Success is measured with clear metrics (quality, latency, cost, or business KPIs)—not slide decks alone.

Vistula Credit Tech — Grow on scoring models and LLM-assisted document understanding for EU lenders.

Warsaw hybrid.

Vistula Credit Tech needs someone who can move LLM features, retrieval, agents, and evaluation from experiment to production—with tests, monitoring, and stakeholder-ready communication.

The Risk ML group partners closely with product and domain experts; you will translate ambiguous requirements into measurable ML or LLM outcomes.

What you will do

• Design and ship LLM features, retrieval, agents, and evaluation with offline evals, dashboards, and rollback plans.
• Improve datasets, labeling, and metrics that correlate with user or business outcomes.
• Review model changes for safety, bias, latency, and infrastructure cost before wide release.
• Document decisions so on-call, support, and compliance teams can act without guesswork.
• Join design reviews and pairing sessions with engineers and domain experts.

What we look for

• Demonstrated production use of core skills such as Python, SQL, PyTorch, Docker—with repos, writeups, or metrics we can verify.
• Comfort operating the listed toolchain (AWS, dbt) in real environments—not tutorials only.
• Clear learning trajectory: internships, coursework projects, or open-source with reproducible results and honest scope notes.
• Clear communication on trade-offs (quality, cost, latency, safety) with product and non-technical stakeholders.
• Eligible to work in Poland (or remote policy as stated in the listing).

Benefits & ways of working

• Mentorship, English classes, gym pass.