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software engineer

About sync labs

at sync. we're making video as fluid and editable as a word document.

how much time would you save if you could record every video in a single take?

no more re-recording yourself because you didn't like what you said, or how you said it.

just shoot once, revise yourself to do exactly what you want, and post. that's all.

this is the future of video: AI modified >> AI generated

we're playing at the edge of science + fiction.

our team is young, hungry, uniquely experienced, and advised by some of the greatest research minds + startup operators in the world. we're driven to solve impossible problems, impossibly fast.

our founders are the original team behind the open sourced wav2lip — the most prolific lip-sync model to date w/ over 9k+ GitHub stars.

we’re at a stage today in computer vision where we were w/ NLP two years ago — have a bunch of disparate, specialized models (eg. Sentiment classification, translation, summarization, etc), but LLMs (a generalized large language model) displaced them.

we’re taking the same approach – curating high quality datasets + training a series of specialized models to accomplish specific tasks, while building up to towards a more generalized approach for one model to rule them all.

post batch our growth is e^x – we need help asap to scale up our infra, training, and product velocity.

we look for the following: [1] raw intelligence [2] boundless curiosity [3] exceptional resolve [4] high agency [5] outlier hustle

About the role

Skills: Design systems, GraphQL, React

About the role

at sync. we train state-of-the-art controllable video generation models, build simple + intuitive products to interface w/ them best, and serve inference at huge scale.

we’re looking for an exceptional Full-stack Engineer to help us reimagine editing videos in an artful way people won’t be able to live without.

As a core part of the founding product team, you’ll obsess over every detail to create a product users love. You’ll ship with extreme urgency, and iterate your way through data-driven experiments to craft a magical experience.

You’ll be a major part in taking us from 50k to 5M+ highly engaged users in the next 2 years.

This role could grow into being a Head of Product.

Key Responsibilities:

  • Own the front-end architecture and development of our video generation platform, crafting a seamless user experience that delights users across all devices

  • Collaborate with our design team to translate wireframes and mockups into pixel-perfect, responsive UI components using cutting-edge front-end technologies

  • Implement intuitive, user-friendly interfaces that guide users through the video creation process, from template selection to customization and export

  • Optimize front-end performance, ensuring lightning-fast load times and smooth animations, even for complex video previews and interactions

  • Conduct thorough user testing and gather feedback to continuously iterate and improve the user experience, identifying pain points and opportunities for innovation

  • Define and track key product metrics, using data-driven insights to inform feature prioritization and design decisions

  • Stay ahead of the curve on emerging front-end technologies and design trends, experimenting with new approaches to keep our platform at the forefront of the industry

Required Skills and Experience:

  • 5+ years of experience as a front-end focused software engineer, with a proven track record of delivering outstanding user experiences

  • Mastery of modern front-end technologies, including HTML5, CSS3, JavaScript (ES6+), and front-end frameworks like React or Angular

  • Deep understanding of responsive design principles, cross-browser compatibility, and performance optimization techniques

  • Strong proficiency in converting design wireframes and mockups into functional, visually appealing UI components

  • Familiarity with user testing methodologies and tools, with a keen eye for identifying usability issues and opportunities for improvement

  • Exceptional problem-solving skills and the ability to balance technical constraints with user needs and business goals

  • Excellent communication and collaboration skills, with the ability to work seamlessly with design, product, and backend teams

Preferred Skills and Experience:

  • Experience with WebGL, Three.js, or other 3D rendering technologies for creating interactive video previews

  • Familiarity with video encoding, transcoding, and streaming protocols (HLS, DASH) for optimized playback across devices

  • Knowledge of accessibility best practices and experience building inclusive, WCAG-compliant interfaces

  • Proven track record of leading successful product initiatives from concept to launch, with measurable impact on user engagement and revenue

  • Experience with A/B testing, conversion rate optimization, and data-driven design decision-making


  • Deliver a world-class, user-centric front-end experience for our video generation platform, setting new standards for ease-of-use, performance, and visual polish

  • Drive significant improvements in user engagement, conversion rates, and retention through continuous iteration and data-driven optimizations

  • Collaborate with the design and product teams to define and execute a roadmap of innovative, user-focused features that differentiate our platform from competitors

  • Establish a culture of rapid experimentation, user testing, and data-driven decision-making within the front-end development team

  • Contribute directly to our company's revenue growth from $1M to $100M+ by building a front-end experience that users love and can't resist sharing with others

  • Become a recognized leader and innovator in the field of AI-powered video generation, pioneering new approaches to user interaction and experience design

our goal is to keep the team lean, hungry, and shipping fast. these are qualities we look for:

[1] raw intelligence

[2] boundless curiosity

[3] exceptional resolve

[4] high agency

[5] outlier hustle

[6] obsessively driven by data


next.js nest.js python pytorch aws/gcp/azure kubernetes

Interview Process

we’re a small team who works hard to create outsized impact. our interview process is grounded in reality:

we're a lean team of 5 — we expect whoever we hire into this role to have a high degree of agency + maniacal urgency. we wanna make the process grounded in reality — its really hard to get a sense of how well we'd work together from a simple interview question or take home test.

here is our process:

[1] 30 mins, intro call to understand goals, evaluate mutual fit, and set up next steps.

[2] 3 hrs, technical assessment + interview loop. can solve p2p live, or offline, you choose. we understand everyone is different, and solving a real world problem in a similar environment + pace as you would normally in the role will be the best way of giving you the best chance to succeed + win.

[3] 4 hrs, irl on-site interview. we’ll fly you out to SF where we’ll work on a problem together.

from there, you’ll get an offer or decision in <24 hrs.

we want to set expectations – we work hard, work fast, and do a lot with very little. this is a team of 5 – you'd be joining an outlier team at the ground floor, and a culture of obsession is what we care about most.

Posted 20 days ago

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