Founding Engineer
$150k - $250kAgentMail (YC S25)
AgentMail is building the identity and communication infrastructure for AI agents, starting with email. We are looking for a Founding Engineer with backend and infra focus to architect systems for agents as the end users. Responsibilities Design APIs that are intuitive for both humans and LLMs Architect high-throughput, low-latency systems Write and review clean, idiomatic code Maintain comprehensive documentation Qualifications Has prior work experience (internships count) as an engineer at a tech company Has shipped software used in production by real users (work or personal projects) Compensation $150k - $250k base salary 0.5% - 2.0% equity Breakfast, lunch, and dinner (Doordash) Medical, dental, and vision insurance Equinox membership #J-18808-Ljbffr
- ...Description Join Hire Hangar and work with fast-growing global companies while building a long-term career. Job Title| Founding Systems Engineer (Performance) Location | On-Site — San Francisco, CA Time Zone | PST Role Overview: We are seeking a Founding...Suggested
- Peregrine Technologies in San Francisco is seeking a founding member of the Business Technologies team. You will design internal infrastructure... ...IT, Security, and business teams. The role emphasizes an engineering-first approach, IaC, and cross-functional collaboration to...Suggested
- Peregrine Technologies is seeking a founding member for its Business Technologies team in San Francisco. You will help design internal infrastructure, automate IT workflows, and scale platforms across identity, SaaS, and cloud environments. You will partner with IT, Security...Suggested
- Peregrine Technologies is seeking a founding member of the Business Technologies team in San Francisco to design scalable internal infrastructure, not just modify existing systems. You’ll be the second hire, partnering with the TPM Lead to define architecture across identity...Suggested
- Socket.dev is seeking a founding Mechanical Engineer to own the design and integration of a reusable reentry vehicle for Dispatch, from CAD to qualification testing and launch. You’ll handle structure, deployment mechanisms, and payload integration while performing hands...Suggested
$500 per month
...DESCRIPTIONThis company handles millions of calls per month and needs an engineer who has worked at that scale before and knows how to build... ...sub-100 milliseconds.You will work on-site directly with the founding team, contributing across architecture, infrastructure, and...H1b- Moritz, an AI-native law firm backed by YC, is hiring a Founding Engineer in San Francisco. You will join as a hands-on leader responsible for product building, scaling the team, and shaping engineering processes from day one. You will ship critical features, own delivery...
$200k - $300k
Fragment Data Technologies is seeking Founding Engineers in San Francisco to design and build foundational architectures for AI agents that resolve procurement exceptions across complex enterprise data. Ideal candidates should have 2-7 years of experience, be comfortable...- Trajectory, based in San Francisco, is seeking a Founding Generalist Engineer to craft the product experience for continual learning. The role involves owning the SDK and API surfaces while working directly with founders and industry-leading partners. Ideal candidates...
- Truss is a regulated fintech company seeking the founding head of risk to design and lead the risk program. The role requires building production risk systems, rules engines, and decisioning platforms to catch fraud, abuse, and loss in production. You will own end-to-end...
$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- ...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- ...manufacturing, and we're building fast. The Role This is a founding growth role, and it is not a traditional marketing job. You... ...with business acumen on top: you'll treat go-to-market as an engineering problem, building scalable, tech-enabled outreach systems rather...
- ...Weave At Weave, we're building the best software for the best engineering teams to move faster, and we want to hire exceptional sales... ...Andrew runs engineering at Weave, and before that worked as the founding engineer at Causal. Responsibilities Build pipeline:...Flexible hours
- ...energy, telecom, healthcare, and more. AI is making it easier to ship code; Metalware is making it easier to ship secure code. Founding Engineer We’re looking for founding engineers to drive our product development from the ground floor. You won’t just optimize existing...Weekend work
- ...to automate the repetitive work currently handled manually across emails, spreadsheets and legacy systems. They are hiring a Founding Engineer to work directly with the founders and customers, understand how these businesses operate and build the product from first conversation...
- ...researcher who has spent his entire career in enterprise AI, leading engineering teams from seed through Series C. The broader team includes... .... We hold a high bar of excellence that starts with the founding team. Background Deploying truly impactful AI Agents today requires...
$145k - $175k
...Founding GTM Engineer Title of Role: Founding GTM Engineer Location: San Francisco, onsite Company Stage of Funding: Venture-Backed — AI, B2B, Software Development, Enterprise Office Type: Onsite Salary: $145K–$175K We're representing a dynamic startup...Work at office$150k - $250k
...AgentMail is building the identity and communication infrastructure for AI agents, starting with email. We are looking for a Founding Engineer with backend and infra focus to architect systems for agents as the end users. Responsibilities: Design APIs that are intuitive...Work experience placementInternship$120k - $180k
...Founding Engineer – Staff/Senior Location: San Francisco, CA Type: Full-time, In-person Flowtel is building the next-generation operating system for hospitality, powered by modern AI agents that can handle everything from booking to room service. We just launched, secured...Full time$90k - $140k
...Tldr; Build the human escalation layer that every AI agent will rely on. Founding engineer, full equity band. Agents are now writing the majority of code in Cursor, Claude Code, Codex, and Devin. They draft contracts. They run support. They've crossed the line from demo...- ...connections will form the foundation of the agentic internet – and Caylex will be the infrastructure powering it. The Role As a Founding Engineer, you’ll play a central role in shaping both our product and engineering culture. You will: Work full-stack across...Full timeWork at office
- ...platforms. Define Technical Strategy and Culture: You will collaborate closely with the founding team to shape technical strategies, influence product development, and establish our engineering culture and best practices. Proactive Problem Solving: You will drive success by...
- ...company from scratch! About Our Team Our team is a group of five engineers, embodying a ‘small but mighty’ spirit. We are defined by our... ...’ve done this before (we love former founders + early stage founding engineers! All great talent is welcome, of course). Who You Are...Contract work
- ...Founding Engineer (Full Stack) Location: San Francisco Bay Area Type: Full-Time Compensation: Competitive salary + meaningful equity (founding tier) About the role We’re hiring a founding full stack engineer to help architect and build the platform from day one. This is...Full time
- ...About Terac We’re building a search engine for human thought . While you might go to Google to search through the web, you come to Terac... ...major consumer companies. Joining now means being part of the founding team defining the next $100B market. The Role We’re looking for...
$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- ...and strategic operators. Now we need to build fast enough to match customer demand. The Role This is not a typical engineering role. You’ll be our founding engineer, with an outsized role in how the product, company, and engineering culture evolve. You’ll write code,...
$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
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