Founding Software Engineer
$250k - $300kRecruiting from Scratch
Founding Software EngineerTitle of Role: Founding Software EngineerLocation: Los Angeles, CA, OnsiteCompany Stage of Funding: Seed — AI, Software DevelopmentOffice Type: OnsiteSalary: $250K–$300KCompany DescriptionWe're representing a dynamic early-stage company that is building a next-generation customer research platform. Their mission is to democratize user research, making it accessible to every team through intelligent AI assistance that streamlines the entire study lifecycle. By leveraging advanced AI agents, they aim to eliminate the traditional barriers of user research, empowering teams with instant insights and deep customer understanding.What You Will DoCollaborate closely with the founding team to architect, build, and ship core features across the full product stack.Design and develop systems that enable AI-driven conversational interviews, focusing on real-time dialogue management and adaptive questioning.Build and maintain infrastructure for the entire research lifecycle, including research plan generation, participant recruitment, and insight synthesis.Contribute to technical architecture decisions, tooling, and engineering processes as a foundational team member.Engage directly with users and stakeholders to translate research and product needs into scalable technical solutions.Establish engineering best practices, code quality standards, and development workflows that will grow with the team.Own features end-to-end, from initial design through deployment and iteration, with a high degree of autonomy.Ideal Candidate BackgroundProven experience in building and shipping production software, ideally in a startup or fast-paced environment.Strong proficiency across the full stack, with hands-on experience in frontend and backend systems.Familiarity with integrating large language models, AI agents, or conversational AI systems.Demonstrated product instincts, with a focus on user experience alongside technical implementation.Ability to work autonomously and make sound decisions in ambiguous, fast-moving situations.PreferredPrior experience at an early-stage or seed-stage startup, particularly in a founding or first-engineer role.Knowledge of NLP pipelines, prompt engineering, or frameworks for LLM orchestration.Experience in building real-time or streaming systems, especially those involving audio or live conversation interfaces.Compensation and BenefitsThe base salary for this role ranges from $250K to $300K. This position offers a unique opportunity to shape the product and engineering culture from the ground up in a rapidly evolving environment.
- ...Simple AI is hiring founding software engineers to build the core systems behind its voice agents. You will work across product to make agents faster, more reliable, and capable in production environments. This high-ownership role ships customer-facing features, improves...Suggested
$160k - $210k
...Everything is handled — launch support, insurance, marketing, and software — so therapists can focus on what they do best: helping kids... ...right place. Role Overview The company is hiring a Founding Engineer (Full‑Stack) to work in‑person, 5 days/week, in San...SuggestedPrivate practiceWork at officeVisa sponsorshipRelocation package- ...Founding Software EngineerAs a Founding Software Engineer, you'll have end-to-end ownership over projects pushing the frontier of AI evaluation. This isn't a narrow role. One week you might prototype a new RL environment from a research paper, the next you'll deploy distributed...SuggestedWork at officeVisa sponsorship
- ...VC, and more. We're a small team of engineers and builders in San Francisco solving some... ...MIRA is looking for a talented Software Engineer to help build the next evolution... ...product sense. ~ Prior experience as a Founding Engineer at an early-stage startup is a...SuggestedFull time
$200k - $225k
...Job DescriptionJob Description Career Renew is recruiting for one of its clients a Founding Software Engineer - this is an onsite role in San Francisco. Salary range: 200-225K USD base plus benefits plus equity. We are looking for a Founding Software Engineer with 0-8...Suggested- ...Navi Engineering RoleNavi captures everything a pilot sees and hears and turns it into automated... ...that happen.About the RoleThis is a founding engineering role. You'll own entire systems... ....About You5+ years of professional software engineering experience, with a track record...Live in
$200k - $250k
...ABOUT THE ROLE Join an early-stage team building AI-powered software to help large organizations manage enterprise spending and supplier agreements. As a founding engineer, you will shape the product and technical direction while delivering practical solutions to complex...Visa sponsorship- ...Withq seeks a founding engineer to own core systems for its hospitality AI platform in San Francisco. You’ll be a founding engineer, architecting from scratch and partnering with the founders across product, GTM, and ops. You’ll own the end-to-end stack including voice...
$160k - $230k
...only; no new H1B/O1, no H1B transfers. About this role Software Engineer with 1-4 years of experience to own the technical side of enterprise... ...by ex-Samsara engineers and fleet operators. ~10 people, founded 2025, $5M funding, San Francisco. ~1-4 years full-stack...H1b- ...Fullstack EngineerWe're looking for a fullstack engineer to own massive slices of our product surface: from low-latency video ingest to the interfaces officers use to review evidence and approve auto-generated reports. You'll work shoulder-to-shoulder with the founders...
$130k - $200k
...Software Engineer, Agent Delivery (Founding Team)Title of Role: Software Engineer, Agent Delivery (Founding Team)Location: San Francisco, onsiteCompany Stage of Funding: Series B — Logistics, AI, Enterprise, B2BOffice Type: OnsiteSalary: $130K–$200KCompany DescriptionWe...- ...are demanding. You will ship features that a developer uses the same week to decide whether to option a parcel. This is a founding engineering seat. You will own whole surfaces, from schema to map interaction to the agent tools that sit on top, and you will talk to...
- ...last decade digitizing: adding sensors, software, and dashboards everywhere. Yet most... ...program. Website: Founders Takt was founded by Adhitya Raghavan (CEO) and Will... ...to Princeton (Mechanical & Aerospace Engineering), Harvard (MBA, Baker Scholar), and Bain...Temporary workRelocation
- ...stack from document ingestion to agents and evals, build 0 to 1 and grow with a young team. We're looking for a Senior Founding AI Software Engineer who is passionate about solving challenging problems in a highly regulated industry. Headquartered in San Francisco,...Remote work
- ...Founding Full-Stack EngineerBuild the core interface and system layer. TypeScript, Rust,... ...'s the orchestration layer beneath your software. We're building Kodezi OS, a real-time,... ...codebases autonomously.As a Founding Full-Stack Engineer, you'll lead the creation of high-impact...Local areaRemote work
$150k - $250k
...law firm handling legal work with same-day turnaround Founding Full-Stack Engineer $150K - $250K 0.10% - 0.60% San Francisco, CA, US ~ Full... ...role Moritz is an AI-native law firm. We don't sell software to lawyers; we are the law firm , and our engineers build...Full time$120k - $250k
...Overview Founding Full-Stack Engineer role at Floot (YC S25). Base pay range is provided; your actual pay will be based on skills and experience... ...and Information Technology Industries ~ Software Development We’re unlocking community knowledge in...Full time- ...Arceus, the AI-native law firm, is hiring a Founding Product Engineer to build the platform that reinvents how legal work gets done. This is... ...and AI engineers to turn real legal judgment into reliable software shipped with speed and quality. You will own features end...
$100k - $200k
...A leading technology recruitment firm is seeking a Founding Backend Engineer to create AI-driven revenue software. This hybrid role involves building a collective memory from data sources, designing systems for user engagement, and proving outcomes through metrics. The...- ...Sphere is seeking a passionate founding product engineer in San Francisco to enhance the customer experience (CX) for their innovative platform. This role requires close collaboration with customers and the design team to implement effective features while addressing user...
- ...cutting-edge AI hardware in San Francisco is seeking a Design Engineer to define and build RL environments and contribute to hardware... ...competitive compensation in a high-impact environment. Join the founding engineering team to influence product development and company success...Full time
- ...Tensorflow, & Google X). We recently raised $5M in seed funding from leading Silicon Valley investors and are scaling our small, elite engineering team to meet growing customer demand. Role Description As Mercator’s first product engineer, you’ll architect and build...H1b
- ...Infinite is looking for a Founding Engineer to define and build the technical foundation of our platform. You will join in-person to own architecture, implementation, and production reliability for mission-critical services, collaborating directly with founders and early...
- ...submissions and move accounts toward coverage. The agents are in production doing real work for paying customers. We're hiring our founding engineer to own the platform end to end: agents, evals, data pipelines, integrations, and reliability. Python/FastAPI, TypeScript/...Work at office
- ...HappyRobot is seeking a Founding Product Growth Engineer to own messaging, positioning, and market adoption. You will work directly with CTO and Head of Product at the intersection of Product, Engineering, Sales, and Growth to translate what we build into compelling narratives...
- ...Hedge (YC P26) in San Francisco is hiring a founding engineer to build the AI agents and the infrastructure that scale an insurance company. You’ll turn messy submissions into automated workflows, chase missing information, and coordinate carrier requirements to move accounts...
- ...A cutting-edge AI start-up based in California is seeking a Founding Engineer to join their team. This pivotal role involves building customer-facing applications that simplify complex physics simulations. The ideal candidate will have experience with full-stack development...Work at office
$150k - $190k
...Description About the Role An early-stage startup is hiring a Founding Full Stack Engineer to help build its product from the ground up. This role... ...) What We’re Looking For ~6+ years of professional software engineering experience ~ Strong full stack background with...Remote workFlexible hours- ...technology company based in California is seeking a Full-Stack Software Engineer. This role offers an opportunity to work on transforming the... ...contribute to a fast-paced environment without bureaucracy. Founding-team equity options accompany competitive salary. #J-18808-...Remote work
- ...professionals and organizations to work more effectively. As a founding member of the Legal engineering team, you will help define the technical foundation for... .... About the Role As a Founding Full-Stack Software Engineer on the Legal team, you will help imagine, build...Full time
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Founding Software Engineer. Be the first to apply!
- software engineer internship remote San Francisco, CA
- software engineer remote San Francisco, CA
- graduate software developer no experience San Francisco, CA
- work from home software developer San Francisco, CA
- summer intern software engineer San Francisco, CA
- junior software developer San Francisco, CA
- information technology software engineer San Francisco, CA
- senior software engineer remote San Francisco, CA
- rust software engineer San Francisco, CA
- part time software developer San Francisco, CA




