Full-Stack AI Developer

Full Time or Contract-to-Hire

Remote (U.S. Time zones)

About Us

Ezra Climate is a fintech startup building solutions at the intersection of sustainable finance and artificial intelligence. Our mission is to accelerate capital deployment to climate solutions. AI applications and agents are foundational to our suite of solutions. We move fast, stay close to our customers, experiment constantly, and believe in launching, learning, and iterating quickly. We’re a small and experienced team with former leaders of companies like Mosaic, IDEO, and New Energy Nexus.

About the Role

We're seeking a full-stack developer with deep experience building AI-powered applications and interest or experience in the climate finance space. You'll be responsible for end-to-end development of both rapid prototypes and enterprise grade applications that leverage frontier AI models and nascent tools to automate and enhance tasks like investment analysis, due diligence, and data processing workflows. This role requires someone who thrives in a fast-paced environment, truly enjoys rapid prototyping, and can own the entire development lifecycle of new products and features.

Core Responsibilities

  • Design and build full-stack applications that integrate LLMs and other AI services through modern APIs

  • Implement and fine tune RAG systems to combine proprietary data with AI models

  • Create robust data processing pipelines for extracting, transforming, and analyzing financial and climate-related documents

  • Work closely with product and business teams to rapidly prototype and iterate on solutions

  • Implement proper monitoring, logging, and validation systems for AI-powered features

Required Skills & Experience

  • 5+ years of full-stack web development experience

  • Track record of rapid prototyping and shipping scrappy (not crappy) MVPs to customers

  • Strong track record of independently shipping features and products end-to-end

  • Strong Python programming skills and experience with modern AI/ML frameworks

  • Proven track record of integrating AI/ML services via APIs (e.g., OpenAI, Anthropic, etc.)

  • Experience integrating and working with large language model APIs

  • Experience with prompt engineering and LLM workflow design

  • Proven ability to collaborate with front-end web developers leveraging modern web stacks and frameworks (React, Node, or similar) and API development

  • Proven ability to work autonomously and drive projects from inception to completion

  • Strong system design and architecture skills

  • Ability to make sound technical decisions independently

  • Strong communication skills and ability to explain technical concepts to non-technical stakeholders

Preferred Qualifications

  • Experience with RAG implementations and vector databases

  • Familiarity with financial data and documents

  • Experience with prompt engineering and LLM application development

  • Experience with agentic AI platforms and tools such as LlamaIndex,LangChain, LangFlow, Dify, Braintrust, or others

  • Experience deploying AI/ML software to cloud platforms such as AWS, GCP, Fly.io, Heroku, or others.

  • Understanding of security best practices for financial applications

  • Nice to have, but not necessary: Experience in fintech and/or climate tech

You'll Excel in This Role If You

  • Are comfortable moving quickly and iterating based on feedback

  • Enjoy a balance of 0 to 1 prototyping and building for scale (with an emphasis on the first of these for the first 6 months)

  • Have strong communication skills and can collaborate with non-technical stakeholders

  • Are passionate about climate finance and sustainability

  • Enjoy solving complex problems with cutting-edge technology

  • Have experience working in fast-paced startup environments

Our Development Philosophy

We believe in moving fast and learning from our customers. Our ideal candidate is someone who:

  • Takes ownership of projects and drives them forward independently, but asks for help and collaborates with the rest of the team seamlessly

  • Gets excited about building quick prototypes to test ideas

  • Is comfortable making technical decisions autonomously

  • Values customer feedback and can incorporate it quickly into solutions

  • Can balance speed of delivery with code quality

  • Enjoys the energy of a fast-moving startup environment

What We Offer

  • High autonomy and ownership of your work

  • Fast-paced, experimental environment where you can see your ideas come to life quickly

  • Direct access to customers and immediate feedback on your work

  • Opportunity to work on meaningful problems at the intersection of climate change and technology

  • Competitive salary and equity package

  • Remote-friendly work environment

  • Comprehensive health benefits

  • Flexible vacation policy

Interested candidates should submit their resume and relevant portfolio projects to hiring@ezraclimate.com.

We are committed to building a diverse and inclusive workplace. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.