Senior AI Engineer

Overview

About Us

Calyx Global is a ClimateTech startup founded by Donna Lee and Duncan van Bergen, backed by Sequoia, Susquehanna (SIG), New Climate Ventures, and others. We provide ratings and research on the global carbon market, helping businesses choose effective carbon credits for climate and sustainability while mitigating reputational and financial risks. Our carbon intelligence SaaS platform serves a growing client base in tech, finance, energy, and other sectors, as well as investors, traders, and brokers in the carbon space. (Find out more about us and some of our clients at calyxglobal.com).

We’re hiring an AI Engineer experienced in building agentic, LLM-powered systems to drive the next evolution of our platform. This is an opportunity to develop new AI capabilities from the ground up, collaborate directly with experts, and make a tangible impact on climate.

Who are we looking for

• Pragmatic with a positive attitude and a strong team player with a sense of ownership.
• Someone looking to build something from the ground up.
• Operates well in ambiguity and can easily pick up new technologies.
• A proactive go-getter who thrives under pressure.
• Prior experience with early-stage startups (bonus).

What You’ll Work On

• Build and deploy intelligent agentic workflows using LLMs, retrieval systems, and multi-step reasoning that integrate with our data and software ecosystem.
• Design robust pipelines for the extraction and processing of information from unstructured data
• Collaborate closely with cross-functional teams to translate real user needs into scalable AI solutions.
• Lead performance evaluation, reliability improvements, and safe deployment of AI systems.
• Shape our AI strategy and contribute to high-impact product initiatives.

What You Bring

• Built and shipped production-grade agentic LLM systems with continuous monitoring, real-world performance evaluation, and iterative improvements.
• Proficient in Python and familiarity with modern AI frameworks (LangChain, OpenAI Agents/Assistants, LlamaIndex, etc.).
• Hands-on experience with RAG, embeddings, vector DBs, prompt design, and agent orchestration.
• Ability to design multi-step agentic systems that interact with external APIs and tools.
• Strong software fundamentals: testing, CI/CD, code quality, cloud infra (AWS preferred).
• Collaborative mindset and comfort with ambiguity in a fast-moving startup environment.

Nice to Have

• Familiarity with document-processing, PDF parsing, or IR systems.
• MLOps experience (monitoring, observability, scaling).
• Interest in climate, sustainability, or environmental intelligence.

What’s in it for you
Opportunity to be at the forefront of climate change and positively impact the world!
Work closely with the founding team to develop a world-class product in a new and meaningful industry.
Be part of the early team and accelerate your career as the company grows.

Join us at Calyx Global and help us build a sustainable future!