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Black Forest Labs

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  • Developer Experience Engineer

    Freiburg (Germany)

    unspecified EUR 140K-190K

    Developer Experience Engineer Freiburg (Germany) About Black Forest Labs We're the team behind Latent Diffusion, Stable Diffusion, and FLUX-foundational technologies that changed how the world creates images and video. We're creating the generative models that power how people make images and video-tools used by millions of creators, developers, and businesses worldwide. Our FLUX models are among the most advanced in the world, and we're just getting started. Headquartered in Freiburg, Germany with a growing presence in San Francisco, we're scaling fast while staying true to what makes us different: research excellence, open science, and building technology that expands human creativity. Why This Role FLUX is the model developers want. BFL still has to become the platform they choose. In 2026 that platform is judged by a single question, asked by both humans and the agents acting on their behalf: how fast can I go from idea to a production-shaped call, and how good does it feel along the way? We're hiring one person to own that answer end-to-end. Not the SDK alone, not the dashboard alone, not the API alone - the whole developer experience, for both the humans building on BFL and the agents building on their behalf. You're the person on the team who breathes DevExp: spotting where the platform is friction for a developer or for an agent, deciding whether the fix lives in the API contract, the SDK, the console, the docs surface, the MCP server, or the onboarding flow - and then shipping it. You

  • People Partner

    San Francisco

    unspecified $145K-$165K

    People Partner San Francisco About Black Forest Labs We're the team behind Latent Diffusion, Stable Diffusion, and FLUX-foundational technologies that changed how the world creates images and video. We're creating the generative models that power how people make images and video-tools used by millions of creators, developers, and businesses worldwide. Our FLUX models are among the most advanced in the world, and we're just getting started. Headquartered in Freiburg, Germany with a growing presence in San Francisco, we're scaling fast while staying true to what makes us different: research excellence, open science, and building technology that expands human creativity. Why This Role This is a rare opportunity to be the first dedicated People Partner in the region. Two talent colleagues and a workplace manager are already on the ground, but no one yet owns the People agenda. That leaves real scope to build the processes, culture touchpoints, leadership capability, and operational foundation a scaling NA team needs. You'll split your time roughly 60% People Partnering / 40% People Operations, with the balance shifting as the team grows. Reporting to the Head of People (Freiburg), you'll work closely with the broader People team in Europe, acting as the bridge that keeps our US team well-supported in timezone. This role suits someone with strong HRBP experience who can hold a room with senior leaders, but isn't too precious to roll up their sleeves on the ops side when it matters. Deep tech experience is essential; you'll be supporting engineers, researchers, and commercial

  • Commercial Counsel

    Freiburg im Breisgau, Baden-Württemberg, Germany, San Francisco, California, United States

    unspecified $210K-$275K

    Commercial Counsel Freiburg im Breisgau, Baden-Württemberg, Germany, San Francisco, California, United States About Black Forest Labs We're the team behind Latent Diffusion, Stable Diffusion, and FLUX-foundational technologies that changed how the world creates images and video. We're creating the generative models that power how people make images and video-tools used by millions of creators, developers, and businesses worldwide. Our FLUX models are among the most advanced in the world, and we're just getting started. Headquartered in Freiburg, Germany with a growing presence in San Francisco, we're scaling fast while staying true to what makes us different: research excellence, open science, and building technology that expands human creativity. Why This Role We are looking for a sharp, motivated, and commercially minded Commercial Counsel to join BFL's legal team. You will support a broad range of commercial transactions spanning our US and EU go-to-market deals, with the majority of deal volume in the United States. This is a high-ownership role in which you will draft and review agreements, lead negotiations, and serve as a trusted advisor to the business on all things commercial. This is an exciting opportunity for a lawyer who wants to work at the cutting edge of AI - advising on novel agreement structures for foundational generative AI models, negotiating complex licensing and API deals, and helping build the legal and commercial infrastructure of a high-growth company. What You'll Work On - Draft and negotiate a wide range of commercial agreements, including API licensing, enterprise SaaS, model access and

  • Member of Technical Staff - VLM

    Freiburg (Germany)

    unspecified EUR 130K-340K

    Member of Technical Staff - VLM Freiburg (Germany) About Black Forest Labs We're the team behind Latent Diffusion, Stable Diffusion, and FLUX - foundational technologies that changed how the world creates images and video. Our models power the tools used by millions of creators, developers, and businesses worldwide, and FLUX is among the most advanced generative systems in the world. Headquartered in Freiburg, Germany with a growing presence in San Francisco, we're scaling fast while staying true to what makes us different: research excellence, open science, and building technology that expands human creativity. Why This Role Vision-language models are becoming foundational to how people interact with generative AI - but most VLM research happens in isolation from the generation stack. At Black Forest Labs, we're integrating VLMs directly into FLUX in ways that make our models more powerful, more controllable, and more aligned with what creators actually want. This role is about pioneering that integration. You won't be applying off-the-shelf VLMs - you'll develop novel approaches, innovate on architectures, and answer questions that haven't been solved yet: how vision and language representations inform each other, how multimodal understanding improves generation quality, and how to make these capabilities deployable at scale without compromising what makes FLUX exceptional. This is a Staff / Senior IC role. We're looking for someone who has pretrained or significantly advanced a VLM, not just fine-tuned one. What You'll Work On - Lead development and training of state-of-the-art multimodal vision-language models within the FLUX stack - innovating

  • Member of Technical Staff - Post Training

    Freiburg (Germany)

    unspecified EUR 130K-340K

    Member of Technical Staff - Post Training Freiburg (Germany) About Black Forest Labs We're the team behind Latent Diffusion, Stable Diffusion, and FLUX - foundational technologies that changed how the world creates images and video. Our models power the tools used by millions of creators, developers, and businesses worldwide, and FLUX is among the most advanced generative systems in the world. Headquartered in Freiburg, Germany with a growing presence in San Francisco, we're scaling fast while staying true to what makes us different: research excellence, open science, and building technology that expands human creativity. Why This Role Post-training is where a foundation model becomes a product. In this role, you'll own the post-training pipeline for our multimodal models end to end - from data strategy and reward modeling to preference optimization, distillation, and safety tuning - across image, editing, and video. You'll drive measurable gains in model quality, build the infrastructure that lets the whole research team iterate fast, and push the state of the art in what it means to align a generative model to human intent. This is a Staff / Senior IC role. We're looking for someone who has shipped post-training for a frontier model before and wants to do it again. What You'll Work On - Own the full post-training pipeline end to end - from data curation and reward modeling through fine-tuning, preference optimization, distillation, safety tuning, evaluation, and deployment - Advance techniques across the post-training stack: SFT, RLHF, RLAIF, DPO, preference learning, and reward

  • Member of Technical Staff - Pretraining

    Freiburg (Germany)

    unspecified EUR 130K-340K

    Member of Technical Staff - Pretraining Freiburg (Germany) About Black Forest Labs We're the team behind Latent Diffusion, Stable Diffusion, and FLUX - foundational technologies that changed how the world creates images and video. Our models power the tools used by millions of creators, developers, and businesses worldwide, and FLUX is among the most advanced generative systems in the world. Headquartered in Freiburg, Germany with a growing presence in San Francisco, we're scaling fast while staying true to what makes us different: research excellence, open science, and building technology that expands human creativity. Why This Role We're building the foundation models that power the next wave of visual intelligence - and pretraining is where that work begins. This role sits at the center of our research effort. You'll shape training objectives, architectures, data strategies, and systems behind our joint image, video, and audio foundation models, with a direct line from your research to products used by millions. This is a Staff / Senior IC role. We're looking for someone who has already led pretraining at the frontier and wants to do it again. What You'll Work On - Lead large-scale pretraining experiments for our multimodal (image, video, audio) foundation models (architecture, objective functions, scaling strategies) - Develop and evaluate novel ideas across architecture, optimizers, and training algorithms. - Contribute across the full stack: low-level GPU and systems optimizations, research code, and high-level model design - Lead focused research projects independently and drive larger cross-team initiatives What We're Looking For -

  • Account Executive

    Freiburg im Breisgau, Baden-Württemberg (Germany), San Francisco, California (United States)

    unspecified $130K-$180K

    Account Executive Freiburg im Breisgau, Baden-Württemberg (Germany), San Francisco, California (United States) About Black Forest Labs We're the team behind Latent Diffusion, Stable Diffusion, and FLUX-foundational technologies that changed how the world creates images and video. We're creating the generative models that power how people make images and video-tools used by millions of creators, developers, and businesses worldwide. Our FLUX models are among the most advanced in the world, and we're just getting started. Headquartered in Freiburg, Germany with a growing presence in San Francisco, we're scaling fast while staying true to what makes us different: research excellence, open science, and building technology that expands human creativity. Why This Role Our models are seeing strong demand across startups, AI-native companies, and some of the world's most recognized brands. We need someone who can turn that demand into revenue - fast, consistently, and across a high volume of accounts. This is a full-cycle role: you own everything from first touch to close to renewal and upsell. Some of your accounts will be fast-moving AI startups. Others will be household-name enterprises starting with a focused use case - and it's your job to land them, prove value, and grow them into strategic relationships. If you're already closing deals and want to be at the forefront of the generative AI wave, this is the role. What You'll Work On - Own the full sales cycle from qualification through close for SMB, startup, AI-native, and enterprise customers - including well-known global brands entering generative

  • Member of Technical Staff - Large Scale Data Infrastructure

    Freiburg (Germany), San Francisco (USA)

    unspecified EUR 100K-230K

    Member of Technical Staff - Large Scale Data Infrastructure Freiburg (Germany), San Francisco (USA) About Black Forest Labs We're the team behind Latent Diffusion, Stable Diffusion, and FLUX-foundational technologies that changed how the world creates images and video. We're creating the generative models that power how people make images and video-tools used by millions of creators, developers, and businesses worldwide. Our FLUX models are among the most advanced in the world, and we're just getting started. Headquartered in Freiburg, Germany with a growing presence in San Francisco, we're scaling fast while staying true to what makes us different: research excellence, open science, and building technology that expands human creativity. Why This Role We're looking for infrastructure engineers who want to work at peta-to-exabyte scale. You'll build the data systems behind the largest training runs on thousands of GPUs, where fixing one bottleneck lets researchers train the next breakthrough model. What You'll Work On - Scalable data loaders for training runs across thousands of GPUs - Efficient storage and retrieval systems for petabyte-scale datasets - Multi-cloud object storage abstraction - Execute large-scale data migrations across storage systems and providers - Debug and resolve performance bottlenecks in distributed data loading Technical Focus - Python, PyTorch DataLoader internals - Object storage (e.g. S3, Azure Blob, GCS) - Parquet for metadata - Video: ffmpeg, PyAV, codec fundamentals What We're Looking For - Built and operated data pipelines at petabyte scale - Optimized data loading - Worked with petabyte-scale video and image datasets - Written

  • Senior Account Executive

    San Francisco (USA), Remote (EU), Freiburg im Breisgau, Baden-Württemberg (Germany)

    remote EUR 150K-185K

    Senior Account Executive San Francisco (USA), Remote (EU), Freiburg im Breisgau, Baden-Württemberg (Germany) About Black Forest Labs We're the team behind Latent Diffusion, Stable Diffusion, and FLUX-foundational technologies that changed how the world creates images and video. We're creating the generative models that power how people make images and video-tools used by millions of creators, developers, and businesses worldwide. Our FLUX models are among the most advanced in the world, and we're just getting started. Headquartered in Freiburg, Germany with a growing presence in San Francisco, we're scaling fast while staying true to what makes us different: research excellence, open science, and building technology that expands human creativity. Why This Role Our models are already seeing strong inbound demand, and we're expanding our commercial team to accelerate adoption across enterprise and strategic partners. We're looking for someone who can translate deep technical interest into durable, long-term partnerships especially across complex, non-standard engagements involving APIs, on-prem deployments, and custom licensing. This role owns the end-to-end commercial journey, working closely with research, engineering, and leadership to help customers move confidently from evaluation to production. What You'll Work On - Own the full sales cycle from discovery through close and expansion across startups, scaleups, and enterprises - Run complex, multi-stakeholder deals involving technical buyers, executives, and legal teams - Design and execute sales motions across APIs, on-prem deployments, and custom licensing - Build durable customer relationships that drive retention and long-term expansion - Partner closely with solutions engineering, forward-deployed engineers, product, research, and

  • Senior Partnerships Manager

    Freiburg (Germany), San Francisco (USA)

    unspecified EUR 135K-190K

    Senior Partnerships Manager Freiburg (Germany), San Francisco (USA) About Black Forest Labs We're the team behind Latent Diffusion, Stable Diffusion, and FLUX-foundational technologies that changed how the world creates images and video. We're creating the generative models that power how people make images and video-tools used by millions of creators, developers, and businesses worldwide. Our FLUX models are among the most advanced in the world, and we're just getting started. Headquartered in Freiburg, Germany with a growing presence in San Francisco, we're scaling fast while staying true to what makes us different: research excellence, open science, and building technology that expands human creativity. Why This Role This isn't a "close deals and hit quotas" role. You'll be architecting the commercial layer of a technology that's still being invented. What does pricing look like when your product gets exponentially better every quarter? How do you structure partnerships when your API serves both scrappy startups and global enterprises? What distribution channels don't exist yet-but should? You'll work directly with our technical team to translate research breakthroughs into market opportunities, often before the market knows it needs them. One week you might be negotiating custom enterprise agreements; the next, designing pricing models for capabilities we just shipped. What You'll Work On - Drive business growth through strategic partnerships and custom deal development, from initial outreach through close - Develop pricing strategies for capabilities that may not have existed six months ago - Collaborate with Research, Engineering, Finance, and Legal to lead complex product,

  • Forward Deployed Machine Learning Engineer

    San Francisco (USA)

    unspecified $180K-$270K

    Forward Deployed Machine Learning Engineer San Francisco (USA) About Black Forest Labs We're the team behind Latent Diffusion, Stable Diffusion, and FLUX - foundational technologies that changed how the world creates images and video. Our models power the tools used by millions of creators, developers, and businesses worldwide, and FLUX is among the most advanced generative systems in the world. Headquartered in Freiburg, Germany with a growing presence in San Francisco, we're scaling fast while staying true to what makes us different: research excellence, open science, and building technology that expands human creativity. Why This Role You'll live at the intersection of cutting-edge research and brutal production reality. Your customers won't just want FLUX to work-they'll need it optimized for their specific hardware, fine-tuned for their unique use cases, and integrated into systems that weren't designed for diffusion models in the first place. What You'll Work On - Ensures FLUX models perform optimally in customer environments-whether that's on-premise GPU clusters or BFL-hosted infrastructure-balancing the eternal tension between latency and output quality - Architects deep product integrations that go far beyond "here's an API endpoint"-helping customers with everything from model hosting and deployment to inference optimization techniques that haven't made it into textbooks yet - Customizes our foundation models for visual media to solve problems customers couldn't articulate until you helped them understand what's possible - Sits in technical deep-dives with customers to diagnose performance bottlenecks, then translates those findings into solutions (and sometimes into research questions for our core team)

  • Member of Technical Staff - Infrastructure Engineer

    Freiburg (Germany)

    unspecified EUR 100K-230K

    Member of Technical Staff - Infrastructure Engineer Freiburg (Germany) About Black Forest Labs We're the team behind Latent Diffusion, Stable Diffusion, and FLUX-foundational technologies that changed how the world creates images and video. We're creating the generative models that power how people make images and video-tools used by millions of creators, developers, and businesses worldwide. Our FLUX models are among the most advanced in the world, and we're just getting started. Headquartered in Freiburg, Germany with a growing presence in San Francisco, we're scaling fast while staying true to what makes us different: research excellence, open science, and building technology that expands human creativity. Why This Role We're looking for engineers to build and maintain the engine that powers our mission to develop visual intelligence. From maintaining and scaling clusters, to building research platforms to accelerate the rate of innovation, this team operates with large breadth and depth. We build the systems to make multi-week/month long training possible, to orchestrate resources at scale, and at the same time efficiently, enabling the next breakthrough model. If you're obsessed with distributed systems at scale, infrastructure reliability, scalability, security, and continuous improvement, this team would be perfect for you. What You'll Work On - Maintain research infrastructure, ensuring health, and optimizing components to extract peak performance from the system (both on application, and infrastructure side) - Scale infrastructure to meet growing research demands while maintaining reliability and performance - Collaborate with research teams to deeply understand their infrastructure needs, and design solutions that

  • Senior Solutions Engineer

    San Francisco (USA)

    unspecified $180K-$270K

    Senior Solutions Engineer San Francisco (USA) About Black Forest Labs We're the team behind Latent Diffusion, Stable Diffusion, and FLUX-foundational technologies that changed how the world creates images and video. We're creating the generative models that power how people make images and video-tools used by millions of creators, developers, and businesses worldwide. Our FLUX models are among the most advanced in the world, and we're just getting started. Headquartered in Freiburg, Germany with a growing presence in San Francisco, we're scaling fast while staying true to what makes us different: research excellence, open science, and building technology that expands human creativity. Why This Role You'll be the bridge between our research frontier and customer reality. Not just explaining what our models do, but ensuring customers actually succeed with them-which means understanding their constraints, their use cases, and sometimes what they need even when they can't articulate it yet. What You'll Work On - Onboard customers to our suite of models, providing hands-on guidance on prompting strategies, inference optimization, evaluation frameworks, and finetuning approaches that ensure best-in-class production integrations - Work alongside our Sales and BD teams on the most complex and high-stakes customer projects-the ones where deployment success has material business impact - Act as BFL's central internal hub, seamlessly connecting go-to-market, engineering, and applied research teams so customer insights flow in both directions - Create reusable technical enablement resources that amplify our sales team's effectiveness and technical fluency-documentation, demos, integration guides that scale beyond individual conversations - Translate customer

  • Member of Technical Staff - Image / Video Generation

    Freiburg (Germany)

    unspecified EUR 130K-340K

    Member of Technical Staff - Image / Video Generation Freiburg (Germany) About Black Forest Labs We're the team behind Latent Diffusion, Stable Diffusion, and FLUX-foundational technologies that changed how the world creates images and video. We're creating the generative models that power how people make images and video-tools used by millions of creators, developers, and businesses worldwide. Our FLUX models are among the most advanced in the world, and we're just getting started. Headquartered in Freiburg, Germany with a growing presence in San Francisco, we're scaling fast while staying true to what makes us different: research excellence, open science, and building technology that expands human creativity. Why This Role You'll train large-scale diffusion models for image and video generation, exploring new approaches while maintaining the rigor that helps us distinguish meaningful progress from incremental tweaks. This isn't about following established recipes-it's about running the experiments that clarify which architectural choices matter and which are less impactful. What You'll Work On - Trains large-scale diffusion transformer models for image and video data, working at the scale where intuitions break and empirical evidence matters - Rigorously ablates design choices-running experiments that isolate variables, control for confounds, and produce insights you can actually trust-then communicating those results to shape our research direction - Reasons about the speed-quality tradeoffs of neural network architectures in production settings where both constraints matter simultaneously - Fine-tunes diffusion models for specialized applications like image and video upscalers, inpainting/outpainting models, and other tasks where general-purpose models aren't enough What