Senior Software Engineer

San Francisco, California

Alexander Chapman
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AI Startup Backed by YC, A16Z & First Round

A profitable, rapidly scaling startup is transforming a massive, operationally complex industry with voice AI agents - automating the countless phone calls and emails needed to move a single load. Their inbound voice AI agent platform is already live, working in production, and trusted by many of the top 100 freight brokers nationwide.


They've recently secured over $10M in funding, growing 30% month-over-month, and are actively building out their engineering team to tackle greenfield projects - including developing outbound AI voice agents from the ground up.


Role: Senior Software Engineer

This is a high-ownership, high-impact role - ideal for engineers who thrive on building from scratch and tackling complex, greenfield AI challenges. You'll be working alongside a low-ego, elite team of builders (ex-CTOs, founders) in a fast-paced environment.


Key Responsibilities:

  • Lead the development of outbound AI voice agents
  • Tackle greenfield projects like:
  • Agentic workflows for real-time decision-making
  • Multi-turn voice negotiations via phone and email
  • Realistic, scalable voice synthesis
  • Building core systems with a focus on speed, accuracy, and user experience
  • Ship products fast while working closely with users for rapid iteration
  • Set the technical culture as the team scales

Ideal Candidate:

  • Proven experience in at least one of the following (Candidates without one of the below will not be considered):
  • Early-stage startups
  • Autonomous vehicles/logistics
  • Voice API development/implementation
  • Background as a early/founding engineer, staff level role, co-founder etc is ideal
  • Strong coding ability - while JavaScript is a plus, they're looking for the best coder possible, regardless of your preferred language. The team will work around your strengths.
  • High academic pedigree (e.g., top-tier CS degree) is a strong plus
  • Self-driven, problem solver who thrives in early-stage, high-autonomy settings
  • Open to being on-site in SF, 5 days a week

Why Join:

  • Build and own greenfield AI projects with direct user impact
  • Work on both inbound and outbound voice AI agents
  • Join a small, talented team from top companies (ex-CTOs, Uber Freight, Waymo, Meta, TikTok)
  • Shape the engineering culture and solve real-world, high-impact problems
  • Be at the forefront of a transformative AI product

Know someone who'd be a great fit or interested yourself?

Apply here or, reach out:

Date Posted: 03 June 2025
Job Expired - Click here to search for similar jobs