Senior Software Engineer, AI/LLM

As a Senior Software Engineer, AI/LLM, you will help define and build the future of AI-powered development at Bubble. You'll work on LLM-driven product features, design Agentic workflows, and develop private models trained on proprietary Bubble datasets. You will collaborate closely with Product, Infrastructure, and Research teams to push the limits of AI-driven development.

In This Role You'll:

• Improve LLM reasoning & retrieval techniques to enhance Bubble's AI-powered development tools.
• Design and build agentic workflows to enable multi-step AI-driven app generation.
• Fine-tune & optimize LLMs for AI-assisted app-building workflows.
• Build and optimize proprietary AI models trained on domain-specific datasets.
• Work closely with the AI team to scale AI research into production.
• Optimize LLM performance and accuracy when interpreting and modifying applications.

• Master's or PhD in AI, ML, NLP, or a related field, and 2+ years of industry experience working with LLMs, AI model optimization, and NLP pipelines.
• OR 5+ years of industry experience as a Machine Learning or Software Engineer.
• Strong experience with transformer models, retrieval-augmented generation (RAG), and dataset curation.
• Experience with agentic AI workflows and chatbot-style LLM interactions.
• Understanding of embeddings, vector search, and AI model evaluation.
• Proficient in relevant languages and tools like Python, Typescript, Hugging Face, LangChain, and Mastra.
• Excellent communication skills and a collaborative mindset.
• Alignment with our values: a desire to empower others, a focus on team and user success, and a willingness to experiment and learn from failures.

Our Tech Stack:

• Frontend: Typescript, SolidJS
• Backend: Typescript, Node.js
• AI/ML: Python, LLM APIs (OpenAI, Anthropic, etc.), LangChain
• Infrastructure: AWS, CDK / Terraform, ECS, Redis, Postgres
• Data & AI Workflows: JSON-based app representations, proprietary datasets

We offer competitive compensation aligned to tier one markets. Our estimated salary for this role at Bubble ranges from $201,000 to $261,000. Actual pay is determined by multiple factors such as skills, qualifications, experience and market demand., In addition to cash and equity compensation, Bubble offers a robust benefits package equating to roughly twenty thousand in additional annual compensation:

Our Benefits Include, But Are Not Limited To:

• Comprehensive health coverage
• 401(k) matching
• Wellness and work enablement stipends
• Flexible PTO
• A Sabbatical program, * Comprehensive health coverage
• 401(k) matching
• Wellness and work enablement stipends
• Generous PTO
• A Sabbatical program

We built Bubble with a clear mission: to empower everyone to create software. Our AI visual development platform lets anyone, from first-time entrepreneurs to enterprise teams, take an idea from prompt to fully-functional, scalable app across web, iOS, and Android. With over 6 million users in more than 100 countries, Bubble is breaking down the barriers to entrepreneurship and innovation worldwide. Our Product Bubble is the only fully visual AI app builder that lets you vibe code without the code to go beyond prototypes and launch real apps to real users. Chat with AI when you want speed, edit directly when you want control. Bubble's visual editor lets you fine-tune any detail, from the design to privacy rules and programming logic, so you're never stuck, even if AI hits its limits. Everything you need comes built in: a unified web and native mobile editor, enterprise-grade hosting, security, database management, and automatic scaling that grows with your business. You can build just about anything on Bubble, and our community is living proof. Mailead grew a $10K investment into a $2M valuation, and Faceless.video went from zero to $1M+ ARR in under a year. People aren't just launching products on Bubble, they're building real businesses. See how Bubble builders are shipping apps that change industries, solve problems, and shape the future here: Inspiring builders, breakthrough apps. Why Join Bubble Now? The rise of AI-generated software has validated everything Bubble has been building toward for over a decade. But pure AI-generated code is fragile, hard to debug, and rarely production-ready. Bubble bridges that gap, combining the speed of AI with a structured visual platform that produces stable, scalable, secure software. The people who join Bubble right now will help define what that means for millions of builders around the world. If you've ever wanted to work on something that genuinely changes who gets to build, this is your moment., For this role, Bubble is currently only considering candidates who are authorized to work in the US and are within the New York City metro area. _We prefer hiring people within commuting distance of our NYC office because we value getting together in person regularly. For those who enjoy working from our Manhattan office on a more regular basis, we offer catered lunches, and happy hours, among other fun perks., About Bubble 201-500 New York