Founding Software Engineer

Career Renew; San Francisco (CA); On-site; USD 200,000 - 225,000; Full time

Job summary

Career Renew is recruiting for one of its clients a Founding Software Engineer for an onsite role in San Francisco. You'll join the founding team to build enterprise-scale AI systems that optimize spend for F500 customers.

0–8 years of experience, full-stack responsibilities, and the chance to shape product direction from day one. Competitive base salary 200–225K USD plus benefits and equity, plus a founder-style, high-energy culture.

Qualifications

• Impressive, relevant work history at top-tier companies: FAANG, brand-name tech, or reputable VC-backed startups.

Responsibilities

• Build and ship full-stack product features end-to-end as a founding engineering team member.
• Solve hard data problems at scale across massive volumes of dirty data.
• Make strategic product and technical decisions shaping the company's direction from day one.
• Work directly with enterprise customers to understand problems and deliver solutions.
• Contribute to AI/LLM systems that drive significant savings for large enterprises.

Skills

Full-stack

Frontend

Backend

Ship products end-to-end

Education

Top CS program

Job description

Career Renew is recruiting for one of its clients a Founding Software Engineer - this is an onsite role in San Francisco. Salary range: 200-225K USD base plus benefits plus equity.

We are looking for a Founding Software Engineer with 0-8 years of experience to join our founding team and help build AI systems that control enterprise spend at scale. You'll work alongside former early leaders at Zip ($2.2B procure-tech startup) to solve complex data problems for F500 customers: think dirty data, massive volume, and real bottom-line impact. This is not a flashy consumer AI play; it's a deeply technical, enterprise-grade challenge backed by $5M from 8VC and Jeff Lawson (Twilio founder). If you want to found a company in the future, this is the perfect training ground.

What will you be doing?

• Building and shipping full-stack product features end-to-end as a core member of the founding engineering team

• Solving hard data problems at scale: continuously verifying what enterprises have negotiated vs. what they've paid across massive volumes of dirty data

• Making strategic product and technical decisions that shape the company's direction from day one

• Working directly with enterprise customers (F500s in CPG, retail, healthcare) to understand their problems and deliver solutions

• Contributing to AI/LLM systems that drive millions in savings for the world's largest organizations

Requirements:

Impressive, relevant work history at top-tier companies: FAANG, brand-name tech (Airbnb, Figma, Datadog-tier), or Series A/B+ startups backed by reputable VCs

Excited about working in adeep enterprise B2B / procurement space: solving dirty data problems at massive scale for F500s

0 - 8 years of experience in full-stack software engineering

Full-stack, front-end, or back-end product engineering experience shipping real products (leaning either direction is fine)

Top CS program required fornew grads

Full-stack application development (shipped real products end to end)

Nice-to-have:

Former founder or founding engineer at a reputable, VC-backed startup (highest-caliber profile)

Experience with modern LLM systems, evals, or frameworks

Enjoys talking to and helping enterprise customers

Culture fit with a 25-28 year old founding team (early-career, high energy, wants to build 0-1)