Founding Engineer
RELARI
Founding Engineer
As a founding engineer, you'll help shape the foundation of how intelligent agents are built, verified, and deployed — not just at Relari, but across the next generation of AI-native software.
In this role, you will:
- Architect core systems for Nuvi — designing how natural language specifications are turned into structured, testable agent behavior.
- Build infrastructure that enables agents to integrate with real-world tools, APIs, and knowledge sources.
- Ensure agent reliability by developing systems for simulation, automated evaluation, and behavioral verification.
- Work directly with customers, helping them go from intent to working agents — and using that feedback to inform what we build next.
- Continuously explore new ways agents can reason, act, and improve — and bring those innovations into the product.
You're a good fit if:
- You've built and shipped technically complex systems — whether infrastructure, AI tools, or end-user products.
- You're a Software Engineer, Machine Learning Engineer, or Research Engineer at a fast-growing software company or top research lab.
- You thrive in a fast-moving environment and view unstructured environments as opportunities to identify the most impactful work and define the future success of the company.
- You operate like an owner: you identify high-leverage problems, drive them to resolution, and raise the bar for the team.
Bonus points if you have:
- Built or contributed to an AI agent framework, orchestration layer, or evaluation pipeline.
- Trained or fine-tuned foundation models, or worked on tools that enable others to do so.
- Published in top ML/NLP conferences (e.g. NeurIPS, ICML, ACL) or contributed to widely used open-source projects.
Vacancy posted 5 days ago
Similar jobs that could be interesting for youBased on the Founding Engineer in San Francisco, CA vacancy
$150k
About the Role This is a founding engineering seat at a Y Combinator-backed consumer wearable startup building hardware at the intersection of biometrics, emotional intelligence, and on-device inference. The team is small, the product is already on users' wrists, and...SuggestedFull timeContract workRemote work$120k - $250k
...the AI and SaaS world, we have thousands of AI agents deployed at scale-up startups and enterprise companies today. This is a founding engineer role — you'll operate at near-CTO level, taking vague problems all the way to shipped product with no hand-holding. You'll be...SuggestedFull time$80k - $120k
About the Role This is a Founding Engineer position at an early-stage enterprise AI automation startup based in Munich, Germany. The company builds AI-powered tooling that learns from real human workflows — particularly screen- and video-based processes — and automates...SuggestedFull timeLocal areaRemote workVisa sponsorship$175k - $200k
...marketing teams improve return on ad spend, lift conversion rates, and dramatically cut production costs. We're looking for a Founding Engineer (Full-Stack) to join our small, high-ownership team on-site in San Francisco. This is a foundational role: you'll work...SuggestedFull timeLocal areaRelocationVisa sponsorshipRelocation package$175k - $225k
About the Role This is a rare, one-of-a-kind founding engineer position at an early-stage consumer AI startup building a real-time platform designed to digitize human connection. Working directly alongside the founder, you'll help shape the technical foundation, engineering...SuggestedFull timeRemote workVisa sponsorship$70k - $100k
About the Role This is a founding-stage full-stack engineering role at an early-stage B2B SaaS cleantech startup building AI-powered software that controls and optimizes industrial and commercial battery storage assets. The platform addresses real-world energy challenges...Full timeRelocationVisa sponsorship$160k - $270k
...stage AI infrastructure company — backed by prominent investors including researchers from OpenAI and DeepMind — is hiring 2-3 Founding Engineers to own the core of its graph-native database platform. Built on object storage and purpose-designed for AI agent workloads,...Full timeWork at officeFlexible hours$120k - $190k
..., and compliance workflows — helping paramedics get paid and protecting 911 services across the country. We're looking for a Founding Engineer to join as one of the earliest technical hires. This role blends hands-on, end-to-end engineering with direct customer engagement...Full timeWork at officeImmediate startRemote work2 days per week3 days per week$150k - $250k
...places, millions of events) and is now building an intelligent, social product experience on top of it. They're looking for a Founding Engineer to join on-site in San Francisco. This is a rare opportunity to shape core systems and product from the ground up alongside...Full timeRemote workRelocationVisa sponsorship$200k
...of products for private market investing. As a Senior Software Engineer on Meridian, you’ll own the technical design and delivery of major... ...sequencing trade‑offs through launch and iteration. This is a founding engineer role on a zero‑to‑one product with meaningful...Work at office2 days per week- ...co-designing the future of supply chain automation alongside some of the brightest minds in the industry. About The Role As a Founding Engineer at Mentum, you’ll have the chance to shape the future of our product, tackle some of the toughest challenges in AI and supply...Work at officeShift work
$130k - $200k
...Founding Engineer - Full Stack (AI x Developer Tools) Location: San Francisco, CA (Hybrid - 4 days/week in person) Compensation: $130,000 - $200,000 base Equity: 0.10% - 1.75% Work Authorization: Open to visa sponsorship in exceptional cases Type: Full...Full timeImmediate startVisa sponsorshipWork visa$250k - $400k
...Founding Engineer Type: Full-time Compensation: $250-400k base plus generous equity Location: On-site in SF, hybrid, or remote About the Role We're looking for engineers to help us build the infrastructure to clone and gamify the internet. We will cover...Full timeRemote work- ...platform that turns your website into your company's main growth engine. We deploy swarms of marketing and web design agents that... ...companies the on‑demand infrastructure of a growth team. Ploy is founded by Bryant Chou, the co‑founder and former CTO of Webflow, where...
$180k
...The Role We're hiring a Founding Engineer to join an early‑stage company building AI‑powered software and data infrastructure for healthcare organizations operating in highly regulated, data‑intensive environments. This is a foundational engineering hire. You'll work directly...Work experience placement- ...Full-Stack Founding Engineer Hiring a full-stack founding engineer to join our team and focused on product engineering and shipping new features. Things You'll Be Working On Architecting and implementing full-stack product features in Typescript/React/Node is...Work at office
$100k - $150k
...Founding Engineer We're looking for one engineer who can build. You'll work at the frontier of AI memory, context retrieval, and knowledge infrastructure, and own real surface area from day one. We're two people with years of runway, so you'll have enormous autonomy...H1b- ...universities and turned down millions of dollars of cash/equity to build real products for billions of humans at Ghost. Apply for the founding eng role if you: ~ Use agents to write ~90% of your code ~ Have done exceptional things in the past ~ Have the...
- ...tl;dr: This is a 1 of 1 role. We're looking for a founding engineer to work alongside a Thiel Fellow founder as employee #1 - with 5X more equity than most "founding engineers". About Empathic “…but I tell you all today, I would rather die a man than live for all eternity...InternshipWork at office
$100k - $200k
...innovation. Learn more at voicecursor.ai. Role Description This is a full-time, on-site role based in the San Francisco Bay Area. As a Founding Engineer, you will play a pivotal role in shaping the technical foundation of Voice Cursor. Your day-to-day responsibilities will...Full time10 hours per weekFlexible hours- ...the company | Founding Engineer | San Francisco, CA | Company: We are building an executive voice engine (the company). This is a multi‑agent AI system that learns how a leader thinks and produces content indistinguishable from what they'd write. Think: a specialized...
$350k
...conversations consistent and personalized across all channels. Reverse engineering legacy healthcare systems that don’t have public APIs to... ...who desperately need them. We’re looking for exceptional founding engineers to help us realize this ambition. If you’re an engineer...Contract workNight shift$120k - $170k
...Our client, an AI startup in the eCommerce industry, are hiring a Founding Engineer to join their growing team in San Francisco. The successful candidate will take full ownership of the product, from system architecture and infrastructure to customer deployments and rapid...- ...through cutting-edge data infrastructure and environments. We're a technical team with experience from Scale AI, Uber, and previously founding a successful AI company. We're based in San Francisco, CA, and recently raised an oversubscribed seed round led by top-tier VCs....
- ...Founding Engineer Opportunity As a founding engineer, you will work directly with the CTO and partially with the CEO on critical parts of the product roadmap to develop and deploy new critical new capabilities. Build and deploy products for SMB and enterprise customers...
$200k - $250k
...Moritz Global AI-native law firm handling legal work with same-day turnaround Founding Engineer Salary: $200K - $250K, Equity: 0.30% - 1.00%, Location: San Francisco, CA, US Job type Full-time Role Engineering, Full stack Experience 3+ years Visa US citizen/visa only Skills...Full time- ...looking for someone with a founder mentality, ready to own major product and business outcomes, not just tickets. This role is part founding engineer, part forward‑deployed engineer, and part customer success when it's needed, until the CS agents we're building take that over...Live in3 days per week
$140k - $180k
...About the RoleJoin a small, high-velocity founding team as engineer #4, working directly with the CTO and fellow founding engineers at an AI-powered talent acquisition startup in San Francisco. This is a hands-on, high-ownership role where you'll ship features to production...Visa sponsorship$150k - $250k
...and be the sole identity + communication provider. It isn't AI for your email, it's email for your AI. We're looking for a founding engineer with strong backend and infra instincts to help build the primitives agents will use to communicate, authenticate, and operate...Full time$160k - $230k
...talent at innovative companies. Our team is 100% remote and we work with teams across the United States to help them hire. Founding Engineer Location - San Francisco, CA (Onsite) Compensation - $160,000 - $230,000 Base + Competitive Equity (0.5%-1%) Visa...Remote workVisa sponsorship
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Founding Engineer. Be the first to apply!

