Arca - Member of Technical Staff, Agent Platform

The role As a Member of Technical Staff focused on Applied AI, you'll own Arca's AI stack end to end.

Requirements

• Everything built (the data models, the APIs, the UI) has to work for a non-human user that operates at scale, across every client, all the time.
• What you'll build (and own) A general agent capable of complex, multi-step tasks (planning, sandboxed code execution, web search, retrieval) that powers a "do anything" experience for advisors.
• Ambient agents that act on behalf of clients and advisors: triaging email, processing meetings, drafting communications, surfacing what needs attention before anyone asks.
• The agent harness that orchestrates LLMs, context, tools, retrieval, and business logic into something coherent and reliable.
• Generative UI and human-in-the-loop interfaces where the agent and advisor genuinely collaborate, not just take turns.
• Evaluation infrastructure that holds two bars at once: high-correctness financial data and subjective, judgment-heavy tasks.
• Example problems Human / AI collaboration in practice: how the agent updates its model of what an advisor wants when they override a recommendation, and learns what to do autonomously versus flag.
• Memory systems that know a client the way a great advisor does, across years, surfacing the right context at the right moment.
• Generative UI as an agent architecture problem: managing state as the agent updates the advisor's screen in real time, without the experience feeling unpredictable.

Source

Paraform - https://www.paraform.com/share/-arca/cmrwefqnt00000al0hakfqkrg · Company: arcawealth.ai Location: On-site, 5 days a week in Flatiron, New York City · Full-time · Salary $200K - $300K plus competitive equity · Open to visa transfers (e.g. OPT, H1B transfers)

One framing the team keeps coming back to: agents are the primary users of the system of record.

Evaluations for financial services

high-accuracy financial data where errors have real consequences, plus judgment-heavy tasks, under compliance and auditability requirements.

Team

A 12-person team, one office, five days a week, working on problems that don't have clean answers.

4 - 10 years of experience in full-stack or backend engineering, building LLM-powered agent systems Comfortable where "correct" isn't always obvious; energized by probabilistic systems and rigorous about evaluation infrastructure Careful with consequences: agents here touch real retirement savings and estate plans Moves fast and treats evaluation and iteration as part of shipping High bar for quality; spots AI slop instantly and leaves systems better instrumented than found Kind, direct, low-ego; gives candid feedback and thrives in an in-person team