Lead Software Engineer, Platform

San Francisco, United States

Full-time

Visa Sponsorship

About the role

We are looking for a Senior Platform Engineer with 5+ years of experience to own and strengthen the core document processing platform at Reducto. You'll be someone who has seen what mature systems look like at scale – ideally at companies like Stripe, Ramp, or Robinhood – and is ready to bring that expertise to a fast-growing AI startup. This role is about making the nuts and bolts work beautifully: ensuring customer jobs run fast and reliably, optimizing how models are served, and driving cost efficiency across distributed systems. You'll work closely with ML engineers and take on-call responsibility as part of a small, high-impact platform team.

What you will be doing

Owning and improving the core platform that runs customer document processing jobs – ensuring speed, reliability, and cost efficiency at scale
Working with ML teams to figure out how to serve in-house models efficiently and integrate them into production pipelines
Building and maintaining infrastructure including databases, task orchestration, workload scheduling, and cloud deployments
Driving improvements to distributed systems – tackling latency, reliability, and scaling challenges as volume grows
Participating in on-call rotations and taking ownership of platform health end-to-end

About Reducto

Reducto is a Series B team in San Francisco, founded in 2023 by Adit Abraham (CEO) and Raunak Chowdhuri (CTO), who met at MIT. Chowdhuri had published computer vision papers with over 100 citations before finishing high school. The company went through YC Winter 2024 and has raised $108M from a16z, Benchmark, First Round, BoxGroup, and YC.

The machine learning team is eight people and reports to the CTO. It runs a mix of in-house models and larger open-source ones, and an ML tech lead role is expected to be filled around the new year. Engineering is in the office five days a week near Union Square and Market, which is intentional at this stage.

Culture signals that hold across every role here: high agency and self-direction, no settling for 90%, and attention to detail that matters concretely. In document parsing a comma versus a period turns $20,000 into 20.000, so sloppy work is a real red flag. Engineers are expected to hold technical conversations with enterprise customers, not just stay in the code.