Senior AI Engineer

The role

Build the AI systems at the heart of a platform that the world's leading PE firms run their investment processes on. You'll design, ship, and improve the agents that do real work for deal teams: researching companies, analysing documents, authoring outputs, and citing every claim. You'll own the full harness: agent design, tool building, retrieval, evals, and the iteration that turns a capable demo into a system professionals trust with billion-dollar decisions.

The opportunity

• Ownership: You'll own agent capabilities end to end: from the harness internals to the evals that prove they work. You'll make the design calls, ship them, and operate them.

• Growth: You'll work across the entire stack, alongside a team of startup veterans, and take on real responsibility.

• Upside: You'll receive meaningful equity in a company that grew 15x last year.

• Impact: You'll leave an indelible mark on an industry responsible for ~7% of US GDP.

Recent projects include

• Agent Harness: Our own agent harness built on a custom, streaming-first graph execution framework.

• Code Execution Framework: Our own code execution framework that can be interrupted and resumed mid-execution for programmatic tool calling.

• Document Ingestion, Indexing, and Search: A VLM-based OCR pipeline, a self-hosted search cluster, and domain-aware search strategies.

• Citations: An end-to-end approach to citation, enabling users to quickly review supporting documentation for any AI generated statement.

• Document Authoring: Agent tooling and a document editor supporting advanced collaborative authoring across Word, Excel, PowerPoint, and email.

If this opportunity excites you

We'd like to meet you. Initial conversations are direct and substantive, going deep on the work, the team, and what you'd own in the first six months.

Capsa provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, sex, national origin, age, disability, genetics, sexual orientation, gender identity, or gender expression. We are committed to a diverse and inclusive workforce and welcome people from all backgrounds, experiences, perspectives, and abilities.

Capsa is committed to a fair and transparent hiring process. We confirm that this advertisement is for an active, existing vacancy within our organization. Please be advised that we may use artificial intelligence-driven tools to assist our recruitment team in screening, assessing, and selecting candidates for this position.