Software Engineer Fast-growing software company San Jose, California $180k to $350k USD base a year

Raydar; San Jose (CA); On-site; USD 180,000 - 350,000; Full time

Benefits offered by this job

Relocation support

Job summary

Raydar is seeking a Software Engineer in San Jose to enhance the reliability of AI-driven software through structured testing and feature development.

You will collaborate with customers, researchers, and domain experts to move experiments from prototype to maintenable production code, typically within about three months. Equity is part of compensation, with a base salary ranging from $180k to $350k per year.

Qualifications

• Proven Python development experience in production systems.
• Experience with typed JavaScript environments (TypeScript/JavaScript).
• Experience with live AI/LLM-powered systems and scale.
• Strong communication with customers and stakeholdersonly.
• Background at a demanding tech company or AI startup preferred.

Responsibilities

• Find where AI systems fall short and design evaluations to improve dependability.
• Build new AI capabilities, including tool integrations and memory/workflows.
• Analyze logs and experiment results to identify bottlenecks and gains.
• Collaborate with customers and domain experts to ship fixes end-to-end.

Skills

Python

TypeScript

JavaScript

LLM systems

Education

Bachelor's degree in CS or related field

Job description

# Software EngineerFast-growing software company* LocationSan Jose, California* TypeFull-time* Posted23 October 2026Apply for this roleTalk to us firstYou apply on Workable, where Raydar manages applications.The role, as published## About the companyOur client is a fast-growing software company.## The roleRaydar is recruiting for this role on behalf of our client. Improve the quality and dependability of AI-driven software through structured testing and new feature development. Take promising experiments from prototype to maintained production code, collaborating with customers, researchers and domain specialists.## What you'll do* Find where automated AI systems fall short, then design and run evaluations to make them more dependable and efficient.* **Build new capabilities for AI systems**, including tool integrations, context handling, memory and multi-step workflows.* Analyze logs and experiment results to locate bottlenecks and separate genuine gains from measurement noise.* **Work with customers** and subject-matter experts to understand needs, then ship and maintain fixes end to end, typically within about 3 months.* Convert successful experiments into clean, maintainable production software.## What we're looking for* Solid background shipping and running live software in Python and a typed JavaScript language.* Practical exposure to LLM-powered systems, including how they are coordinated, observed and served at scale.* Comfort speaking directly with customers to clarify needs and deliver working technical answers.* Prior time at a demanding technology company or an AI startup.* A bachelor's-level technical degree in computer science, electrical engineering or a related field from a highly regarded school.* Clear communicator with good customer instincts and a knack for pinpointing the heart of vague technical problems.* Independent, driven and creative, with a sense of ownership and sound product instincts.## Bonus points* Curiosity about or exposure to chip design, semiconductors or hardware-software systems.* Relocation support## Location and work model* San Jose, CA, United States* On-site, 5 days per week in office* Full-time## Compensation, as the posting describes it* EquityPay$180k to $350kUSD base a year