AI/Backend Engineer

About Prospera AI

We're building Sophie, a multi-agent AI orchestrator that helps wealth management advisors deliver more personalized, effective service to their clients. Our platform analyzes behavioral patterns, communication preferences, and emotional states to transform how advisors understand and serve their clients. We're a small, well-funded team at an exciting inflection point — our technology works, customers love the product, and now we're building the engineering team to scale.

The Role

We're looking for an AI/Backend Engineer to own and evolve our LLM orchestration pipeline. You'll be the first dedicated engineering hire, working directly with our CTO to transform Sophie from a working prototype into a scalable, enterprise-ready platform. This is a high-impact, high-autonomy role. You'll shape technical decisions that define the product for years to come.

What You'll Do

Own the AI Pipeline

• Design and optimize our multi-agent orchestration system
• Implement parallelization and streaming to dramatically reduce response latency
• Build robust prompt management with versioning and A/B testing capabilities

Build RAG Systems

• Design retrieval-augmented generation for accurate, contextual responses
• Work with vector databases, embeddings, and relevance scoring
• Optimize for both speed and accuracy at scale

Develop Production APIs

• Build developer-friendly APIs connecting our AI capabilities to the frontend
• Design for future integrations with CRMs and advisor tools
• Implement proper authentication, rate limiting, and documentation

Shape the Foundation

• Establish code review practices and testing standards
• Document architecture decisions for future team members
• Contribute to technical patents and IP development

What We're Looking For

Must Have

• 4+ years production Python experience (async patterns, type hints)
• Hands-on experience with LLM APIs (OpenAI, Anthropic, or similar)
• Strong understanding of prompt engineering and multi-step LLM workflows
• Production API development experience (FastAPI or similar)
• Strong SQL and PostgreSQL skills

Great to Have

• Experience with RAG systems and vector databases (Pinecone, Weaviate, pgvector)
• Streaming/real-time implementation experience (SSE, WebSockets)
• TypeScript/JavaScript familiarity
• FinTech or regulated industry background

How You Work

• Self-directed and comfortable with ambiguity
• Strong written communication (async-first culture)
• Pragmatic problem-solver who ships iteratively
• Collaborative mindset with ego-free approach to feedback

What This Role Is Not

• Not a pure ML/research role — you'll apply LLMs, not train them
• Not a management role — near-term focus is individual contribution
• Not fully autonomous — you'll collaborate closely with the CTO on architecture
• Not 9-to-5 — startup intensity applies, though we respect work-life balance

Compensation & Benefits

BaseCompetitive — Based on experience and location

EquityMeaningful early-stage grant with 4-year vesting

EquipmentProfessional laptop provided + remote work stipend after 6 months

Time OffFlexible PTO with minimum 15 days encouraged

LearningAnnual professional development budget

ScheduleFlexible hours with 3–4 hours daily overlap Americas timezones

Interview Process

1

Resume Review— 1–2 day turnaround

2

Technical Screen— 60 min video conversation with CTO

3

Take-Home Assessment— 4–6 hours (to be reviewed)

4

Assessment Deep Dive— 90 min collaborative review

5

Values & Fit— 45 min conversation

6

References & Offer

Total timeline: 2–3 weeks