Software Engineer, Backend

Posted 7 Days Ago
New York, Union, IA, USA
In-Office
175K-275K Annually
Junior
Artificial Intelligence • Software
Mirage is redefining short-form video with frontier AI research.
The Role
Build, operate, and own backend systems, services, APIs, data pipelines, and infrastructure. Solve distributed systems, scaling, concurrency, and performance challenges. Integrate and serve large generative AI models in production, instrument systems, and iterate to improve product quality while partnering with product, design, client, and AI teams.
Summary Generated by Built In

Mirage is an AI-native video platform that intelligently orchestrates production and editing through natural language. Our models leverage contextual awareness to execute the same creative decisions a professional editor would — dramatically improving productivity for experienced teams, while making video creation accessible to anyone.
We’re an interdisciplinary team addressing some of the most difficult technical and creative challenges in generative media. As an early member of our team, you’ll tackle foundational problems that remain largely unsolved across the industry, driving an outsized impact on the future of creative expression.

More about us

Product (Captions by Mirage)

Research (Seeing Voices, technical-white-paper)

Updates (Mirage on X / twitter)

TechCrunch, Forbes AI 50, Fast Company (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 all of our roles will require you to be in-person at our NYC HQ (located in Union Square)

About the role
Backend engineering at Mirage isn’t narrowly defined. We work across product, platform, and machine learning—building the systems, services, APIs, and ML pipelines that power all of our product surfaces.

You’ll own critical backend systems end-to-end, partnering closely with product, design, client, and AI teams to turn ambitious ideas into reliable, scalable production systems. This opportunity is ideal for engineers who enjoy solving complex technical problems while staying connected to product and user outcomes.

Responsibilities

  • Design, build, and own backend systems end-to-end, including services, APIs, data pipelines, and infrastructure that power our products

  • Solve complex technical challenges across distributed systems, scaling, concurrency, and performance

  • Integrate and operate large generative AI models in production—deploying, serving, and scaling systems that combine internal research and external capabilities to unlock new product experiences.

  • Instrument, experiment, and iterate in production to continuously improve system and product quality

  • Design and operate core platform infrastructure, including integrations with third-party providers, storage systems, security, and internal APIs

What Makes You a Great Fit

  • 2+ years of professional industry experience

  • A track record of shipping high‑impact systems and/or products in production

  • Exceptional problem solving fundamentals and ability to learn

  • Excellent engineering taste combined with a strong sense of practicality and time-management

  • Able to operate effectively in an extremely fast-paced environment as well as scope and deliver projects end-to-end

Even better if...

  • You have worked extensively with LLMs, generative media models, and have a pulse on where the technology is going

  • You are grounded, collaborative, and willing to do whatever it takes to help the team win

  • You have 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.

Skills Required

  • 2+ years of professional industry experience
  • Track record of shipping high‑impact systems and/or products in production
  • Design, build, and own backend systems, services, APIs, data pipelines, and infrastructure
  • Experience solving distributed systems, scaling, concurrency, and performance challenges
  • Exceptional problem solving fundamentals and ability to learn
  • Excellent engineering judgment, practicality, and time-management
  • Ability to operate effectively in a fast-paced environment and deliver projects end-to-end
  • Experience working extensively with LLMs or generative media models
  • Startup founder or early engineer experience
Am I A Good Fit?
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The Company
HQ: New York, New York
75 Employees
Year Founded: 2021

What We Do

We’re building full-stack foundation models and products that are changing video creation, production and editing more broadly. Over 20 million creators and businesses use Mirage’s products to reach their full creative and commercial potential. We are a rapidly growing team of ambitious, experienced, and devoted engineers, researchers, designers, marketers, and operators based in NYC. As an early member of our team, you’ll have an opportunity to have an outsized impact on our products and our company's culture.

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