# Senior Gen AI Software Engineer

**Company:** [Liftoff](https://hotfix.jobs/companies/liftoff)
**Location:** Remote
**Role:** Fullstack Engineering
**Salary:** $211k – $270k/yr
**Experience:** 8+ years
**Skills:** Python, TypeScript, React, SQL, API Design, Data Modeling, Testing, Generative AI, LLMs, AI Agents, Evaluation Systems, Data Pipelines, State Management, Instrumentation, Access Control
**Posted:** 2026-08-14

> Build end-to-end generative AI products for Liftoff’s demand-side advertising business, including agentic workflows, reliable production systems, and customer-facing interfaces. The role requires a bachelor’s degree, 8 years of relevant experience, and strong Python skills with TypeScript and React experience.

## Job Description

## Responsibilities
- Own generative AI product capabilities end to end, from workflow discovery and prototyping through implementation, rollout, measurement, and continuous improvement.
- Prototype and validate AI solutions, then turn successful approaches into production-ready capabilities.
- Build agentic workflows that reason over campaign, customer, creative, and performance data; use defined tools; produce structured results; and return control to people when appropriate.
- Partner with decision-makers and subject-matter experts to integrate AI agents into practical daily workflows.
- Design the data, tools, and instructions AI systems need to produce grounded results.
- Build reliable production AI workflows with tool use, state management, failure recovery, human-review boundaries, and safe model/software interfaces.
- Develop evaluations using automated checks and human judgment to measure whether AI features accomplish intended tasks.
- Instrument production systems to measure quality, adoption, business impact, latency, cost, and failure modes.
- Apply safeguards for customer data, system access, and high-impact workflows.
- Build Python services and TypeScript/React interfaces for customer-facing products.
- Evaluate and adopt new models and techniques when they improve product quality, capability, speed, or cost.
- Mentor engineers and establish practices for designing, testing, and operating AI-powered products.

## Requirements
- Bachelor's degree and 8 years of relevant experience.
- Experience building and operating meaningful production products, ideally across backend services, data, and user interfaces.
- Experience shipping LLM-powered or AI-assisted products beyond a demo, including reliability, context, tool use, provider changes, latency, cost, and changing model behavior.
- High proficiency in Python and comfort with TypeScript and React.
- Strong fundamentals in API design, data modeling, SQL, and testing.
- Understanding of the data, tools, instructions, permissions, feedback loops, and quality measures surrounding AI models.
- Ability to define success criteria, investigate failures, and improve AI experiences using testing, feedback, and production signals.
- Strong product and engineering judgment.
- Clear technical communication and effective collaboration with technical and non-technical partners.
- Comfort working through ambiguity and making informed decisions with incomplete information.

## Nice to Have
- Experience as an early engineer, startup founder, or in another high-ownership environment.
- Experience with advertising technology, campaign optimization, performance marketing, analytics products, or data-rich B2B software.

## Compensation and Benefits
- Full compensation package including equity and health, vision, and dental benefits based on country of residence.
- Base salary varies by candidate location and experience.
- SF Bay Area, Los Angeles/Orange County, NYC, and Seattle: **$230,000–$270,000 USD**.
- All other cities and towns in approved states: **$211,000–$248,000 USD**.
- Benefits may include medical coverage, wellness stipends, and additional perks.

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