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Engineering4 days agoRemote

Liftoff Mobile

Senior GenAI Software Engineer (North America)

pythonjavascripttypescripthtmlllmmultimodal aivision modelsdiffusion modelsaicreative aiad techprogrammaticsoftware engineering

Key details

Salary

Not specified

Employment type

Full-time

Seniority

Senior

Years experience

5-10

Location

Remote, United States

Full job description

Liftoff is hiring a Senior GenAI Software Engineer to join the Creative GenAI team. The role involves architecting and shipping AI systems for generating ad creatives, including interactive playables, using Python, JavaScript/TypeScript, and multimodal AI models such as vision and diffusion models. Candidates must have a Bachelor's degree, 5+ years of relevant experience, strong system design skills, and experience shipping LLM-powered systems to production. The position is remote with a preference for Eastern Standard Time Zone. Responsibilities include prototyping, collaborating with creative teams, designing robust AI systems, building evaluation infrastructure, researching new AI capabilities, and mentoring team members. Compensation includes a salary range depending on location, equity, and health benefits.

What you'll do

  • Architect and ship AI systems that generate ad creatives end-to-end, including interactive playables
  • Rapidly prototype solutions and move from proof-of-concept to production
  • Collaborate with creative strategists, content leads, and builders to scale systems
  • Design robust systems with guardrails, fallbacks, and quality gates for AI-generated output
  • Build evaluation infrastructure for creative output including subjective quality assessment, human-in-the-loop review, and A/B testing
  • Research new model capabilities and propose new initiatives
  • Mentor team members and improve engineering practices

Requirements

  • Minimum Bachelor's Degree
  • 5 years of relevant experience
  • Significant pre-LLM production experience
  • Strong fundamentals in system design, debugging, and observability
  • Proficient in Python for AI/agent work
  • Fluent in JavaScript/TypeScript for creative and playables work
  • Experience with HTML and gaming is a plus
  • Experience shipping LLM-powered systems to production
  • Experience with multimodal AI, specifically image and/or video generation models
  • Strong communication and collaboration skills
  • Ability to navigate ambiguity and adapt to shifting priorities
  • Located in Eastern Standard Time Zone

Tech stack

PythonJavaScriptTypeScriptHTMLLLMsmultimodal AIvision modelsdiffusion modelsAI-powered creative systemsinteractive playables

Benefits

EquityHealth benefits (medical, vision, dental) based on country of residenceWellness stipendsAdditional perks based on country of residenceCompetitive salary based on role, level, and location

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