Founding AI Engineer

Permanent
Technology
Experienced
software engineer, backend engineer, type script, python, java script
San Francisco, California
California
US$120000 - US$180000 per annum

About the Role

As a Founding AI Engineer, you'll lead the development of core AI infrastructure for testing, benchmarking, and monitoring large language model (LLM)-based voice agents. This is a deeply technical role that involves close collaboration with customers and product leadership to ensure agents behave reliably in production environments.

What You'll Do

  • Design and build AI systems for evaluating and stress-testing conversational agents at scale.

  • Create pipelines for benchmarking LLMs and simulating diverse real-world conversational scenarios.

  • Implement real-time monitoring, feedback loops, and alerting mechanisms for deployed agents.

  • Continuously improve system accuracy and performance through experimentation and iteration.

  • Engage with early customers to gather feedback and rapidly improve tooling.

  • Help shape product direction, technical architecture, and team culture.

What We're Looking For

Minimum Requirements:

  • 1+ years of experience building and deploying AI systems in production environments.

  • Proficiency in Python and strong problem-solving ability.

  • A startup mindset: comfortable with ambiguity, fast iterations, and end-to-end ownership.

  • Curiosity and initiative-someone who spots opportunities for improvement and runs with them.

Bonus Points For:

  • Experience at an early-stage startup or in a founding/first-engineer-type role.

  • Background in LLM evaluation, AI benchmarking, or observability tools.

  • Exposure to real-time systems or large-scale conversational agent architectures.

Why Join Us?

  • High ownership: Play a core role in shaping a product, team, and company from the ground up.

  • Technical challenge: Work on complex problems in a space that's still being defined.

  • Tight feedback loop: Collaborate directly with users and decision-makers.

  • Equity upside: Be part of an early-stage company with significant growth potential.

  • Meaningful impact: Help teams deploy more reliable, trustworthy AI.


If you're excited about solving real problems in AI infrastructure and want to work in-person with a lean, driven team building something new - we'd love to hear from you.

Similar Jobs

€100000 - €130000 per annum
Zürich
🧬 Senior Fullstack Engineer - Revolutionize Clinical Trials with AI A Zürich-based startup is reinventing how biopharma companies run clinical trials by transforming fragmented, outdated tools into one intelligent, real-time platform powered by modern engineering and AI. Why you'll love this role: Tech that actually matters: Build infrastructure that accelerates life-saving treatments reaching patients faster.
€70000 - €90000 per annum
Uppland
🎨 Senior Product Engineer - Shape the Future of Creative Work An ambitious, design-led startup in Stockholm is reimagining how teams create and collaborate. By combining AI with a powerful visual asset platform, they're building the creative brain for the world's most innovative brands-unlocking faster workflows and smarter decisions across marketing, design, and content.
£100000 - £150000 per annum
Remote
🚀 Senior Fullstack Engineer - Shape the Future of AI Video We're building cutting-edge AI technology that is transforming how humans create and communicate. As a Senior Fullstack Engineer, you'll play a pivotal role in designing and scaling user-facing products that power millions of video generations monthly.
£50 - £100 per hour
Remote
Key responsibilities include: Developing ERC-20/1155-compatible smart contracts with embedded metadata (e.g., project ID, vintage year, verification body). Setting up a multi-node Besu network using IBFT 2.0 or QBFT consensus. Building minting and retirement APIs integrated with off-chain MRV (Measurement, Reporting & Verification) data. Delivering end-to-end functionality alongside comprehensive, audit-ready documentation.
£70000 - £100000 per annum
Blekinge
We're looking for an ambitious AI Engineer with a focus on visual/generative AI to join our team. Do you have a passion for turning research into practical applications? ✨ We are a fast-growing Stockholm-based startup with a team of 6, working on a cutting-edge creative product with AI at its core.
£70000 - £80000 per annum
Cambridgeshire
TEC Partners are representing a leader in agricultural technology, manufacturing technology to dramatically reduce the use of harmful chemicals in environmental management. Their products have applications across agriculture, commercial buildings and forestry and have won several major awards. They are now looking for Senior Python Developer to join the team due to their continued success and increased workload.
Negotiable
Remote
Job Title: SRE - Azure DevOps Location: Remote Salary: Competitive Job Type: Contract - 18 Months
£150000 - £250000 per annum + bonus
Cambridgeshire
The Role As Director of Engineering, you'll orchestrate cross-functional teams in hardware, software, DevOps, and trading systems across multiple countries. Your mission? To design and deploy next-gen trading infrastructure in over 150 markets worldwide. You'll streamline communication, align priorities, and ensure projects are delivered on time while fostering collaboration across diverse teams. Your leadership will be pivotal in maintaining this firm's position as a tech powerhouse.
€80000 - €100000 per annum
Berlin
We are seeking a talented and driven Senior Machine Learning Engineer to join our fast-growing AI start-up, REMATIQ. This is an exciting opportunity to work on cutting-edge AI solutions that are transforming regulatory affairs. As a Senior Machine Learning Engineer, you will take ownership of designing, building, and scaling machine learning systems that drive impactful innovation in the industry.
€80000 - €100000 per annum
Berlin
We are seeking a talented and driven Senior Machine Learning Engineer to join our fast-growing AI start-up, REMATIQ. This is an exciting opportunity to work on cutting-edge AI solutions that are transforming regulatory affairs. As a Senior Machine Learning Engineer, you will take ownership of designing, building, and scaling machine learning systems that drive impactful innovation in the industry.
£80000 - £110000 per annum
London
Tec Partners are collaborating with an AI powered deep-tech start-up revolutionising how engineering works. The company are developing a platform that can generate, test, and simulate thousands of engineering designs in a fraction of the time traditional processes take today.
£90000 - £100000 per annum
Berlin
We're seeking a Lead Machine Learning Engineer in Berlin (on-site) to join our small & fast-moving team. You'd own large parts of our Data Pipeline & ML Services which are built with Python & FastAPI while leveraging OpenAI Services from Azure.