Full-Time

Backend Engineer

Krea

Krea

51-200 employees

Real-time AI image and video editing

No salary listed

San Francisco, CA, USA

In Person

Category
Software Engineering (1)
Required Skills
Kubernetes
JavaScript
Node.js
Postgres
opentelemetry
TypeScript
SAML
AWS
Prometheus
Redis
Requirements
  • Proficiency in Javascript/TypeScript
  • Experience designing, implementing, deploying, and maintaining private APIs for web and mobile applications
  • Experience designing database models
  • Experience fixing issues related to HTTP/3 client connections
  • Experience improving database and infrastructure performance through caching solutions or better connection pooling
  • Experience profiling and optimizing HTTP and WebSocket workloads for real-time image generation and video generation
  • Experience improving observability, monitoring, and alerting for services and responding to operational incidents
  • Experience scaling services via architectural changes and infrastructure improvements
  • Experience open-sourcing non-trivial innovations from work on the product
  • Experience designing and iterating software development processes for web-native and AI-native tools
  • Experience implementing enterprise-grade features such as Audit Logs, SAML/SSO, SCIM
  • Familiarity with Javascript/TypeScript stack including Node.js; Postgres; Redis; WebSockets; Kubernetes on AWS; monitoring tools such as Axiom, HyperDX, Prometheus, OpenTelemetry; and GitHub workflow
Responsibilities
  • Design, implement, deploy, and maintain private APIs for our main web and mobile applications
  • Design database models
  • Fix issues with our system that, among other things, may be related to how HTTP/3 handles client-side connections to our processes
  • Improve database and infrastructure performance by implementing caching solutions or better connection pooling
  • Profile and find bottlenecks for many types of HTTP/WebSockets requests to enable real-time image generation—and even video
  • Improve observability, monitoring, and alerting for our service so that we can better respond to operational incidents
  • Scale our service via architectural changes as well as infrastructure improvements
  • Open-source any non-trivial innovations that come out of our work on the product
  • Design and iterate over software development processes so that we can build an web-native and AI-native creative tools for people
  • Professionalize our main product by adding enterprise-grade features such as Audit Logs, SAML/SSO, SCIM
Desired Qualifications
  • None

Krea is an AI-powered platform for real-time creation and enhancement of visual content. It lets users generate images and videos from text prompts, edit existing media, and upscale quality. The platform combines various AI models, such as Latent Consistency Models and Stable Diffusion, to offer a suite of creative tools accessed through an intuitive interface suitable for artists, designers, and marketers. The business uses a freemium model: a free tier plus paid plans that unlock higher resolutions, faster processing, and access to more specialized models. Krea differentiates itself with real-time generation capabilities and a user-friendly design, aiming to make advanced generative AI accessible to a broad audience while monetizing through premium features.

Company Size

51-200

Company Stage

Series B

Total Funding

$83M

Headquarters

San Francisco, California

Founded

2022

Simplify Jobs

Simplify's Take

What believers are saying

  • Raised $83M at $500M valuation led by Bain Capital Ventures.
  • Supports 22K image and 8K 120fps video upscaling with LoRA fine-tuning.
  • Integrates top models like Kling, Veo 3 for video restyling.

What critics are saying

  • Runway ML's Gen-3 Alpha Turbo captures premium video users in 6-12 months.
  • OpenAI's GPT-4o bundles unlimited edits at $20/mo, converting users.
  • Fal.ai open-sources Flux.1 [pro] on March 15, 2026, obsoleting Krea's model.

What makes Krea unique

  • Krea integrates ElevenLabs Music APIs for text-to-music and video sync.
  • Real-time Canvas generates photorealistic images in under 50ms.
  • Partnership with Black Forest Labs releases FLUX.1 Krea [dev].

Help us improve and share your feedback! Did you find this helpful?

Benefits

Company Equity

Growth & Insights and Company News

Headcount

6 month growth

1%

1 year growth

3%

2 year growth

52%
Blockchain.News
Apr 9th, 2026
ElevenLabs Music APIs integrated into Krea: generate text-to-music and auto-sync audio for videos - latest 2026 analysis.

ElevenLabs Music APIs integrated into Krea: generate text-to-music and auto-sync audio for videos - latest 2026 analysis. According to KREA AI on X, Krea has integrated ElevenLabs Music APIs to let users generate songs from text prompts and add music synchronized to video timelines, demonstrated with a "90s hip hop" track layered over a promo clip (as reported by KREA AI). According to KREA AI, the feature targets creators and marketers seeking faster soundtrack production and consistent audio branding across short-form video, trailers, and ads. As reported by KREA AI, the integration streamlines workflow by removing separate DAW steps and enabling one-click music fitting, which can reduce content turnaround time for social campaigns and event promos. According to KREA AI, this rollout highlights growing commercial adoption of multimodal generative audio, opening opportunities for SaaS video platforms to offer tiered licensing, automated beat-synced edits, and template-based audio branding using ElevenLabs' generation models. Machine Learning & Artificial Intelligence Analysis. The integration of ElevenLabs Music APIs into Krea AI marks a significant advancement in generative AI for multimedia content creation, announced via a Twitter post by Krea AI on April 9, 2026. This development allows users to generate original songs from simple text prompts or seamlessly add synchronized music to videos, enhancing creative workflows. For instance, the demonstration showcased a 90s hip hop track overlaid on a promotional video for an upcoming event, highlighting the API's ability to produce genre-specific music that aligns perfectly with visual elements. According to reports from TechCrunch in early 2026, ElevenLabs has been expanding its AI capabilities beyond voice synthesis to include music generation, building on its foundation in neural networks for audio processing. This move comes amid a growing trend where AI tools are converging to offer end-to-end content solutions, with the global AI in media and entertainment market projected to reach $99.48 billion by 2030, as per a Grand View Research report from 2023. Krea AI, known for its image and video generation features, now empowers creators to produce fully scored videos without needing musical expertise, potentially democratizing content production for marketers, filmmakers, and social media influencers. The immediate context involves rising demand for quick, customizable audio-visual content, especially in digital marketing where personalized ads can boost engagement by up to 20 percent, based on a 2024 study from Gartner. From a business perspective, this integration opens up substantial market opportunities in the creative industries. Companies can leverage ElevenLabs' Music APIs within Krea to streamline production pipelines, reducing costs associated with licensing stock music or hiring composers. For example, advertising agencies could generate bespoke soundtracks for campaigns, tailoring them to brand identities and audience preferences, which aligns with the increasing use of AI in personalized marketing. A 2025 analysis from McKinsey indicates that AI-driven content creation could add $2.6 trillion to $4.4 trillion annually to the global economy by enhancing productivity. However, implementation challenges include ensuring audio quality and synchronization accuracy, as mismatches could detract from user experience. Solutions involve advanced machine learning models that analyze video tempo and mood, as seen in ElevenLabs' technology, which uses transformer-based architectures similar to those in GPT models. The competitive landscape features key players like Stability AI and Runway ML, who are also integrating audio features, but ElevenLabs' focus on high-fidelity music generation gives it an edge in niche applications. Regulatory considerations are crucial, particularly around copyright, with the EU's AI Act from 2024 mandating transparency in generative outputs to avoid infringement claims. Technically, the ElevenLabs Music APIs employ diffusion models and neural audio synthesis to convert text descriptions into full songs, complete with lyrics, melodies, and instrumentation. This is evident in the 90s hip hop example, where the API likely processed prompts to emulate era-specific beats and rhythms. Market analysis from a 2026 Forrester report predicts that AI music tools will capture 15 percent of the $20 billion music production software market by 2028, driven by integrations like this one. Businesses face ethical implications, such as the potential displacement of human musicians, prompting best practices like hybrid workflows where AI augments rather than replaces creativity. To monetize, platforms like Krea could offer premium tiers for advanced music features, targeting enterprises in e-learning and gaming, where synchronized audio enhances immersion. Looking ahead, this integration foreshadows a future where AI seamlessly blends text, visuals, and audio into cohesive narratives, transforming industries like film and education. By 2030, AI-generated content could account for 30 percent of all digital media, according to a 2025 prediction from PwC, creating opportunities for new business models such as AI content agencies. Practical applications include event promotions, as demonstrated, where quick music addition can make videos more engaging, potentially increasing conversion rates by 15 percent per a 2024 HubSpot study. Challenges like data privacy in API usage must be addressed through compliance with GDPR standards updated in 2023. Overall, this development not only boosts Krea AI's competitive position but also signals broader industry shifts towards multimodal AI, encouraging businesses to invest in training and adoption strategies for sustained growth. KREA AI. delightful creative tools with AI inside. Machine Learning & Artificial Intelligence

fal.ai
Aug 4th, 2025
Introducing the Flux.1 Krea [dev] On fal

Recently through a partnership with Black Forest Labs, Krea has a released a open weights fine-tuned version of FLUX.1, FLUX.1 Krea [dev].

VentureBeat
May 29th, 2025
Flux.1 Kontext Enables In-Context Image Generation For Enterprise Ai Pipelines

Join our daily and weekly newsletters for the latest updates and exclusive content on industry-leading AI coverage. Learn MoreBlack Forest Labs (BFL), the startup founded by the creators of the popular Stable Diffusion model, has launched a new image generation model called FLUX.1 Kontext. This model not only generates and edits photos, but also allows users to modify them with both text and other images.The company also announced its new BFL Playground, where people can try out BFL’s models.BFL released two versions of the model: FLUX.1 Kontext [pro] and FLUX.1 Kontext [max]. A third version, FLUX.1 Kontext [dev] will be available on private beta. Both the Pro and Max versions are now available on platforms such as KreaAI, Freepik, Lightricks, OpenArt and LeonardoAI.Today we're releasing FLUX.1 Kontext – a suite of generative flow matching models that allow you to generate and edit images.Unlike traditional text-to-image models, Kontext understands both text AND images as input, enabling true in-context generation and editing. pic.twitter.com/zleJGuXDge — Black Forest Labs (@bfl_ml) May 29, 2025FLUX.1 Kontext can perform in-context generation

Marketing4eCommerce
Apr 14th, 2025
Krea.ai raises €73M for AI platform

Krea.ai has raised €73 million ($83 million) to enhance its revamped unified generative AI platform. Founded by Spaniards Víctor Pérez (CEO) and Diego Rodríguez (CTO), the startup aims to simplify the use of various generative AI models by offering a unified and seamless user experience. The platform is designed to boost creative processes by providing access to diverse AI tools, with plans to expand offerings for businesses and integrate audio AIs.

Wow Partners, Inc.
Apr 8th, 2025
Krea Raises $83M at $500M Valuation

San Francisco-based startup Krea has raised $83 million in funding to develop an integrated AI platform for designers and visual creators. The Series B round secured $47 million, with previous rounds totaling $3 million and $33 million. Bain Capital Ventures led the round, with Andreessen Horowitz and Abstract Ventures also participating. Krea's current valuation is approximately $500 million.