Senior AI Engineer (Contractor)

Senior AI Engineer (Contractor) SENIOR AI ENGINEER (CONTRACTOR) 📍 Warsaw-based | Occasional travel to Amsterdam | Project-based engagement We're Altura, an ambitious SaaS startup, and we just raised our Series A. At Altura, we're making it easier for organisations to win complex deals (tenders and RfPs). With our AI-powered platform, we simplify bid management by turning it into a smooth, strategic process. We connect workflows, automate tasks, and make knowledge accessible, so teams can work more efficiently and effectively. But we're not stopping there. We're building the first AI-powered Agentic Virtual Bid Management Assistant, designed to automate the entire bid lifecycle. With fresh funding, big ambitions, and a fast-growing team across Amsterdam and London, we're just getting started. If you value innovation, enjoy high ownership, and want to shape the AI backbone of a Series A SaaS company, we'd love to talk. TL;DR As a Senior AI Engineer (Contractor), you'll join a high-caliber team building the agentic layer that powers Altura's next evolution. This is not a "plug prompts into an API" role. You'll design and ship real agentic workflows: context-aware, production-grade systems that sit on top of our proprietary data graph and become a core technical moat. You'll work in a small, fast-moving team with freedom to experiment: Claude Code, Cursor, Copilot, and new frontier models the day they drop. If something meaningfully advances the state of the art, we use it. You'll drive high-impact AI initiatives end-to-end, owning outcomes across: - Discovery and greenfield prototyping - Model evaluation and multi-model strategy - Production rollout, observability, and continuous improvement Beyond product capabilities, you'll help shape foundational AI platform components: context engineering, agent orchestration, evaluation frameworks, tone monitoring, and online observability. No corporate red tape. No endless committees. Just ownership, speed, and real technical influence. You'll deliver AI systems that are: - Reliable in production - Scalable across customers - Measurable in impact - Cost-aware by design And you'll help define what "great AI engineering" looks like inside a Series A company operating at the leading edge. ENGAGEMENT MODEL This is a B2B contractor engagement, intended for experienced independent professionals or those operating through their own registered entity. - Location: Warsaw, Poland (remote-first) - Scope: Deliverable- and milestone-based; we estimate a high-intensity engagement for the foreseeable project horizon - Schedule: Flexible — we care about outcomes, not hours logged - Travel: Occasional visits to our Amsterdam office for on-site collaboration and strategic working sessions - Non-exclusive: We welcome contractors who maintain a broader client portfolio - Long-term collaboration preferred, subject to mutual agreement and scope renewal - Salary (Monthly Range): Based on a 40-hour work week €7K – €9K per month Candidates are expected to be registered as a sole trader (jednoosobowa działalność gospodarcza) or operate through their own legal entity, and are responsible for their own tax and social security (ZUS) obligations in Poland. OUR TECH STACK - AI: Python - Frontend: Vue.js and Next.js - Backend: C# — ASP.NET http://ASP.NET - Infrastructure: Azure, GitHub, Linear WHAT YOU'LL DELIVER - Design and deliver an agentic layer and a rich context graph that automates complex work with deep integration into customers' knowledge repositories - Drive architecture & delivery of production LLM/GenAI systems across context engineering, agentic workflows, model evaluations, and multi-model strategies - Define and implement evaluation: offline and online metrics, gold sets and regression tests, human review loops, and A/B experiments - Operationalize LLMOps: deployment patterns, observability and monitoring, incident response, and performance and cost optimizati ... (truncated, view full listing at source)