End-to-End Software Engineer — AI-Driven Builder

Softmax Inc.; San Francisco (CA); On-site; USD 150,000 - 190,000; Full time

Job summary

Softmax Inc. is seeking a Software Engineer who combines a scientist’s rigor with a founder’s drive in San Francisco. You will own products end-to-end, design and implement solutions, and measure impact while iterating. Expect to leverage AI tools to achieve 2–5x productivity and collaborate with a small, high-performance team.

You should have a deep analytical background, multi-language full-stack capability (Python and C++), and strong customer instincts to decide what to build and why.

Qualifications

• Graduate work in a quantitative field (CS, physics, etc.), or equivalent depth from industry.
• Full-stack capability across backend services, data pipelines, and frontend when needed.
• Proficiency in Python and C++.
• Strong customer instincts related to product decisions.
• AI-native workflow with daily use of AI tools.

Responsibilities

• Own products end-to-end: define, design, build, ship, measure and improve.
• Apply analytic rigor to feature decisions and interpret data.
• Move fast with quality: ship frequently and learn from real usage.
• Leverage AI tools aggressively to boost productivity.
• Collaborate with a small, high-ownership team with direct feedback.

Skills

Python

C++

Full-stack

Analytical

Education

Graduate work in a quantitative field

Research experience

Job description

Softmax Inc. is seeking a Software Engineer who combines a scientist’s rigor with a founder’s drive in San Francisco. You will own products end-to-end, design and implement solutions, and measure impact while iterating. Expect to leverage AI tools to achieve 2–5x productivity and collaborate with a small, high-performance team.

You should have a deep analytical background, multi-language full-stack capability (Python and C++), and strong customer instincts to decide what to build and why.