Founding Member of Technical Staff at TierZero | San Francisco

TierZeroSF HQ

Hybrid Full-time

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Experience Level

Experience

Qualifications

Qualifications:5+ years of relevant experience or open-source contributions. Proficiency with LLMs, MCPs, Cloud Infrastructures, and Observability tools. Startup experience is a plus.

About the job

Are you ready to take a leap into innovation?

Join a team of expert engineers who have collectively contributed over $10 billion in value.
Be present in our San Francisco office three days a week, collaborating closely with your peers.
Flourish in a dynamic environment where adaptability is key.
Adopt a product-driven and customer-centric mindset.
Engage with cutting-edge technologies including LLMs, MCPs, Cloud Infrastructures, and Observability tools.
Bring over five years of professional experience or open-source contributions to the table.
Bonus points if you've previously thrived in a startup environment.

About TierZero

At TierZero, we are transforming the landscape of software engineering with AI. Our mission is to enhance the speed at which engineering teams build and deploy code, addressing the bottlenecks that slow down production. With $7 million raised from esteemed investors like Accel and SV Angel, our solutions are trusted by leading companies such as Discord, Drata, and Framer to optimize their high-scale systems and infrastructure for the AI-driven future.

Your Role

As a founding member, you will play a pivotal role in creating and developing our core products and systems. Collaborating closely with our CEO, CTO, and our valued customers, you will be engaged in a variety of tasks, including:

Designing and implementing intelligent AI systems capable of reasoning over vast amounts of unstructured data.
Deploying full-stack features based on direct user feedback.
Enhancing the product experience to ensure that our AI agents are not only intelligent but also reliable and user-friendly for engineers.
Building systems that automatically assess LLM outputs, enhancing reasoning through self-play and feedback loops.
Developing machine learning pipelines for data ingestion, feature generation, embedding storage, RAG pipelines, vector search infrastructure, and graph databases.
Experimenting with open-source and frontier LLMs to assess various trade-offs.
Creating scalable infrastructure to support long-running, multi-step agents, including memory, state management, and asynchronous workflows.

About TierZero

TierZero is at the forefront of AI-driven engineering, revolutionizing how teams build and deploy code. With substantial investment backing and a growing reputation among industry leaders, we are setting the standard for operational efficiency in the AI era.

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Founding Member of Technical Staff at TierZero | San Francisco

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Founding Member of Technical Staff at tierzero | San Francisco

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Founding Recruiter at Lassie | San Francisco

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Lassie is revolutionizing the healthcare industry by leveraging artificial intelligence to transition health practices from outdated paper systems to efficient, automated solutions. Positioned as a technology frontrunner, we are rapidly expanding, with a trajectory towards unicorn status by next year, serving a growing base of satisfied customers.Founded by industry veterans Steijn Pelle and Frédéric Renken, who have previously propelled companies like Robinhood and Coinbase to substantial revenue milestones, Lassie is currently in the process of building its Series A team. Our early employees have experienced excellence and are committed to recreating that success.About the RoleWe are seeking a proactive and strategic Founding Recruiter to spearhead the establishment of our entire talent acquisition function. In this pivotal role, you will collaborate closely with the founders, overseeing hiring initiatives across software engineering, product development, and go-to-market strategies as we undergo rapid scaling.You will be responsible for crafting and implementing our recruiting strategy, sourcing top-tier talent, and developing processes that attract the best candidates. As one of our foundational hires, your contributions will significantly influence the culture, workforce, and future direction of Lassie.This opportunity is perfect for individuals enthusiastic about working in a dynamic, early-stage environment and who are passionate about building teams from the ground up.

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Founding Technical Recruiter at Blaxel | San Francisco

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Full-time|On-site|San Francisco

About the RoleWe are on the lookout for a Founding Technical Recruiter who will play a pivotal role in establishing our hiring infrastructure from square one. This position involves taking ownership of the entire recruitment lifecycle—from sourcing candidates to finalizing offers—for engineering, product, and go-to-market roles at a pioneering AI infrastructure startup.This is an exceptional chance to define the recruiting function and work closely with our founders in shaping our hiring processes, enhancing our employer brand, and crafting a remarkable candidate experience as we grow our engineering team from 4 to an unlimited number of engineers.Your ResponsibilitiesCreate and scale recruiting systems, including structured interview processes, standardized evaluation rubrics, and comprehensive hiring playbooks.Manage full-cycle recruiting for all technical roles, from niche talent to general engineering positions.Develop top-notch sourcing pipelines employing innovative strategies to attract elite talent in competitive markets.Collaborate closely with founders and the CEO to establish role specifications, interview frameworks, and recruitment strategies.Enhance our candidate experience from initial contact through to offer acceptance and onboarding.Elevate our employer brand through compelling storytelling, engaging content, and active community involvement.Implement data-driven recruitment practices, tracking metrics, analyzing recruitment funnels, and continuously refining our hiring processes.Engage in internal HR initiatives with the Head of Operations and expand your responsibilities as the company grows.Who You AreYou are a proactive builder who thrives in uncertain environments and takes swift action. Your experience in recruiting technical talent at fast-paced startups equips you with the knowledge of what it takes to attract top engineers. You are passionate about providing a stellar candidate experience and adept at conveying an inspiring vision. You possess strong analytical skills, creativity, and are determined to secure exceptional talent.

Mar 3, 2026

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