Arjun Aggarwal

Founding Engineer

I work across the product and systems behind Lightfield's CRM. I've helped turn product operations into a public API and Python SDK used by our own agent, built tools for creating and editing CRM tasks, and worked on workflow automation, human review, notifications, and core product surfaces. The recurring challenge is translating an ambiguous request into a change that is understandable to the user and correct in the product.

Software Development Engineer Intern

I built reporting and reconciliation infrastructure for roughly ten million financial events a month. The system used SNS, SQS, Lambda, DynamoDB, EventBridge, S3, and CloudWatch to trace events across services and preserve reporting completeness through retries and partial failures. The point was not throughput by itself. Financial data had to remain trustworthy when the underlying delivery system was asynchronous and imperfect.

Machine Learning Engineering Intern

I worked with a roughly 900-million-edge graph representing relationships in card data. I rewrote motif queries with GraphFrames and improved their performance by about six times. The project taught me that a graph is useful only when its relationships can answer an operational question quickly enough to affect the product; scale alone is not the interesting part.

What building agent actions inside a CRM changed about how I think about chat, workflow state, and human control.