Software Engineer, AI Developer Platform

The posting, as Mirage wrote it

Mirage is an AI video company focused on making creation dramatically easier. Our team tackles some of the hardest creative and technical challenges in generative media.

We get to rethink how people collaborate with AI that can actually do creative work with them—defining entirely new interaction paradigms for AI-native video tools. We make that possible by building multimodal agents that turn creative direction into edits, rendering engines that composite multiple layers of video and graphics, and generative video models trained from the ground up that create new media when needed.

All of this comes together in Captions, our creative workspace for generating, editing, and designing video. The technology behind Captions is now available more broadly: Tesseract gives any AI agent native video-editing capabilities, while developers can integrate our models into their own products through APIs.

Explore our work
Captions https://apps.apple.com/us/app/captions-ai-edits-your-video/id1541407007 — Our flagship creative workspace
Tesseract https://x.com/trymirage/status/2102429594804429138 — Our professional video engine for AI agents
Research https://mirage.app/research?utm_source=chatgpt.com — The foundation models we build in-house
Updates https://x.com/trymirage — The latest from Mirage
TechCrunch https://techcrunch.com/2026/03/24/mirage-raises-75m-to-continue-building-models-for-its-ai-video-editing-app-captions/, Forbes https://www.forbes.com/companies/captions/?list=ai50, Fast Company https://www.fastcompany.com/91270234/video-most-innovative-companies-fast-company-2025-youtube-roku-tubi-vimeo-captions-descript-cour-procreate-synthesia-beeble — Press

Our Investors

We’re very fortunate to have some the best investors and entrepreneurs backing us, including Index Ventures, Kleiner Perkins, Sequoia Capital, Andreessen Horowitz, General Catalyst, Uncommon Projects, Kevin Systrom, Mike Krieger, Lenny Rachitsky, Antoine Martin, Julie Zhuo, Ben Rubin, Jaren Glover, SVAngel, 20VC, Ludlow Ventures, Chapter One, and more.

Please note that most of our roles will require you to be in-person at our NYC HQ (located in Union Square)

About the role

Mirage is hiring a backend engineer to rebuild how we ship software as AI agents dramatically increase the volume of code we produce. You’ll own the path from commit to production, ensuring our build, test, review, deployment, and security systems help engineers and their agents ship quickly and safely.

You’ll treat our development infrastructure like a product—working directly with engineers to understand friction, measure bottlenecks, and build tools they want to use. You’ll also ship features across our AI video products and developer platform, grounding those improvements in firsthand experience.

While we don’t use hierarchical titles or levels internally, we are currently hiring engineers who have operated at senior or staff+ scope.

Responsibilities

• Ship features alongside product enginee

[…]
w a system could be attacked while you’re building it

• A practical, measurement-driven approach—you measure before you fix and would rather ship an effective solution this week than wait a quarter for a perfect one
• Comfort owning build, deployment, review, and security together, working across layers and defining a roadmap where no playbook exists
• An interest in staying close to product, shipping to production every week, and using firsthand experience to guide infrastructure improvements
• A preference for making the right path easy to follow through useful tools and thoughtful defaults

Even better if...

• You’re a product engineer who keeps getting pulled into build, deployment, or security problems and wants to make that your focus
• You’ve built internal developer platforms or productivity tooling at a fast-growing startup
• You have offensive security experience, including penetration testing, red-teaming, bug bounties, or CTFs
• You’ve shipped LLM agents or evaluations that run in production
• You’ve worked with merge queues, monorepo tooling, or test-impact analysis
• You’ve been a startup founder or an early engineer at one

BENEFITS

• Comprehensive medical, dental, and vision plans
• 401K with employer match
• Commuter Benefits
• Catered lunch multiple days per week
• Dinner stipend every night if you're working late and want a bite!
• Grubhub subscription
• Health & Wellness Perks
• Multiple team offsites per year with team events every month
• Generous PTO policy

Captions provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.

Please note benefits apply to full time employees only.