Siena Partnership
Lead Principal Software Engineer
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Lead Forward Deployed Engineer
Europe | Remote | B2B SaaS | Applied AI
Base + Bonus up to 300K
We are working with a high-growth B2B SaaS and Applied AI business building production-grade AI products for enterprise customers to embed across software businesses and build and ship AI-powered features into production.
This is an engineering-first role for someone who is still hands-on, can quickly understand unfamiliar codebases and wants to combine software engineering with applied AI, product thinking and commercial impact.
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The role:
Embed directly into B2B software companies, working alongside CTOs, CPOs and engineering teams to identify where AI and LLMs can create meaningful product or workflow value within portfolio businesses. Take solutions from idea and prototype through to production, building agentic workflows, LLM-powered products, RAG systems and other applied AI capabilities within existing codebases, infrastructure and engineering constraints. Remain hands-on across architecture, coding, testing, deployment and production hardening.
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Ideal Profile:
We are looking for a hands-on, language agnostic software engineer, typically with 7–15 years’ experience, who has a proven track record of building and shipping GenAI features into production. You’ll be a strong problem solver with an operator mentality and entrepreneurial mindset, excited by the autonomy and ownership that comes with building complex products inside software businesses from concept through to production.
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