Job Description
We're building the agent runtime that finds, validates, and prepares fixes for vulnerabilities automatically, while people retain judgment and merge control.
That means solving real distributed-systems and reasoning problems, not gluing together prompts.
What You Do
Build and harden Nullify's multi-provider agent runtime - turn loops, structured output, budget governance, checkpoint/resume for multi-hour runs.
Design agents that reason about business logic and real application behavior, not just pattern-match against known signatures.
Build and grow our evaluation harness - labelled test cases, scoring, regression tracking - so we can measure whether an agent got better or just got different.
Own agents end-to-end: detection, validation,



fix generation, and the judgment calls in between.
What You Bring
Robust software engineering fundamentals - Go or Python, comfortable in production systems, not just notebooks.
Experience building or operating LLM-based agents beyond a single prompt-response call: tool use, multi-step reasoning, retries, evals.
A scientist's instinct for measuring whether something actually works before shipping it.
Genuine interest in security - you don't need to be an expert yet, but you need to want to become one.

📌 A.I. Engineer - Nullify (New South Wales)
🏢 Black Nova Venture Capital
📍 New South Wales