Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

Founding Backend Software Engineer

$225k - $275k
Full-time

True Talent Solutions Partners

About the Role

Join a small, high-caliber team building AI-powered video technology. As a founding backend engineer, you will lead the design of core systems and set a high bar for technical quality as the product and engineering team grow.

What You'll Do

  • Design and develop scalable backend systems that power AI video creation.

  • Build infrastructure for agentic workflows, video generation pipelines, reinforcement learning loops, and real-time data processing.

  • Own distributed systems architecture and improve reliability through automated testing, performance benchmarking, and end-to-end observability.

  • Partner with researchers, engineers, and designers to develop product features and APIs.

  • Write production-quality code, set technical direction and engineering guidelines, and raise team standards.

  • Document technical decisions and define agent skills for a fast-moving engineering team.

What We're Looking For

  • Five to ten years of backend software engineering experience, including work at a startup or high-growth company.

  • Industry experience building scalable backend systems, distributed systems, large-scale data processing, information retrieval, and asynchronous workflows.

  • At least 12 months of hands-on industry experience designing agentic systems or working with LLMs and generative AI.

  • Professional experience with TypeScript and AWS; experience with S3, Lambda, RDS, SQS, ECS, FastAPI, Docker, and CI/CD is relevant.

  • Strong fundamentals in algorithms, data structures, and system design, applied in professional backend engineering work.

  • Experience acting as a technical lead, setting direction and code standards while contributing code.

  • A formal degree and fluency in English.

Compensation & Benefits

Base salary: $225,000 to $275,000 annually. Visa sponsorship is not available.

Location

On-site, five days a week in San Francisco, California.

Vacancy posted 10 hours ago
Similar jobs that could be interesting for youBased on the Founding Backend Software Engineer in San Francisco, CA vacancy
  •  ...We are hiring a Founding Software Engineer in San Francisco. We are building a small, talent-dense team. This role will define the engineering...  ...and developer experience. Architect, build, and scale core backend systems powering document intelligence and VLM-based workfows... 
    Suggested

    Unsiloed AI

    San Francisco, CA
    1 day ago
  • $200k - $300k

     ...Job Description About the Role Own the backend systems behind an AI assistant that...  ...text, email, and phone. As a hands-on founding engineer, you will design, build, and operate reliable...  ...'re Looking For At least 4 years of software engineering experience, including... 
    Suggested
    Immediate start

    Clera

    San Francisco, CA
    5 days ago
  • $200k - $300k

     ...grows every week. This is a hands-on engineering role. You’ll design it, build it,...  ...was the product. 4+ years of software engineering, with real time on call...  ...own everything you ship. You want founding-team scope. You’ll set the backend bar for Pally and help hire the engineers... 
    Suggested
    Full time

    Pally

    San Francisco, CA
    2 days ago
  • Prestige Ventures Inc. is seeking a generalist, high-agency backend engineer with 5+ years’ experience to build customer-facing products. You...  ...-stage startup DNA, comfort with ambiguity, and strong collaboration with the founding team. #J-18808-Ljbffr Prestige Ventures Inc.
    Suggested

    Prestige Ventures Inc.

    San Francisco, CA
    1 day ago
  • Backbone is building the clinical AI layer for healthcare payments. Founding Engineer, Backend & Infrastructure will own the systems that power Backbone’s clinical and financial workflows, including chart and claims data, authorization, denial handling, and payer/provider... 
    Suggested

    Backbone

    San Francisco, CA
    2 days ago
  • $25k

     ...general-purpose LLMs still miss those nuances. They're hiring 3 founding engineers. What you'll own A production agent from start to finish,...  ..., and live reconciliation when the numbers disagree The backend and infra that get the product from pilot to scale Time with... 
    Full time
    Remote work
    Visa sponsorship

    Rnb Consultancy

    San Francisco, CA
    8 hours ago
  • True Talent Solutions Partners is seeking a founding backend engineer to design core systems for an AI-powered video platform. You will lead scalable backend development, own distributed architecture, and set engineering standards in a fast-growing startup On-site in San... 

    True Talent Solutions Partners

    San Francisco, CA
    4 days ago
  • $180k - $240k

    NQB8, a national security company incubating ambitious startups in San Francisco, is seeking an exceptional backend software engineer. You are among the top 10% of developers you have ever worked with and thrive in a founder-led, high-velocity environment. This in-person... 

    NQB8

    San Francisco, CA
    8 hours ago
  • $180k - $250k

     ...on placing the best product managers, software, and hardware talent at innovative...  ...United States to help them hire. Founding Full-Stack Engineer Location San Francisco, CA...  ...engineering, with strong ownership across backend, frontend, infrastructure, and AI-... 
    Full time
    Work at office
    Immediate start
    Remote work
    Relocation package
    Shift work

    Recruiting from Scratch

    San Francisco, CA
    1 day ago
  •  ...building an AI operating system for commercial lending. We are hiring 3 founding engineers to own end-to-end features from the borrower portal to live data reconciliation. You’ll work on production-grade backend and infra, computer vision for financial statements, and turning... 

    Rnb Consultancy

    San Francisco, CA
    8 hours ago
  • fal is building the core platform that powers the company’s generative media ecosystem. We seek a founding backend platform engineer to own billing, pricing, accounts, access, API keys, and model discovery end-to-end. You’ll design APIs and data models, ensure correctness... 

    The Consensus

    San Francisco, CA
    4 days ago
  • Stealth Startup is seeking a Founding Senior Backend Engineer to shape core systems powering millions of AI-driven conversations. You’ll tackle real-time audio, telephony, and developer tooling, collaborating with the founding team from architecture to production. You... 

    Stealth Startup

    San Francisco, CA
    2 days ago
  • Zania Inc. is seeking a Founding Software Engineer (Mid-Senior) to help build the backend systems powering our agentic AI platform. This role focuses on scalable, secure services and petabyte-scale data pipelines, with high emphasis on reliability and security. You will... 

    Zania Inc.

    San Francisco, CA
    3 days ago
  •  ...8 years Stage: Seed → Series B Role Type: Early hire / founding engineer Why This Role Exists You’ll help build the core product...  ...Do Build end-to-end product features across frontend and backend Ship quickly in 0→1 environments Design APIs, schemas,... 

    Weekday

    San Francisco, CA
    a month ago
  •  ...California Fully On-site We are seeking a Founding Full-Stack Engineer Real-Time AI & Wearables to build...  ...-time video and data pipelines to backend services and the user-facing...  ...Approximately 2 to 5 years of professional software engineering experience. Demonstrated... 
    Full time

    MaxIT Consulting - Max Corporate Group

    San Francisco, CA
    5 days ago
  • $160k - $200k

     ...contribute both to our mobile application and backend for our Guaranteed Income product. The...  ...admin portal. You will work with our engineering team to design, develop, test, and...  ...and team culture. ~ Funding $4.6M ~ Founded 2018 ~ Salary: $160k - $200k ~100% US... 
    Work at office
    Remote work

    Hired Recruiters

    San Francisco, CA
    4 days ago
  • $180k - $230k

     ...in the AI-powered sales automation space is hiring its first Founding Engineer. You'll join the CTO as a core member of a tiny, high-caliber...  ...use, prompt engineering, and conversation flow. Production backend development experience in Python (services, APIs, backend... 
    Remote work

    Clera

    San Francisco, CA
    a month ago
  • $135k - $155k

     ...readiness, all in one enterprise-grade product. As a Founding Full Stack Engineer , you'll own architecture and implementation across multiple...  ..., and Node.js in production environments. ~ Proven backend design experience for multi-tenant, workflow-heavy applications... 
    Local area
    Relocation

    Clera

    San Francisco, CA
    a month ago
  • $163k - $246.5k

     ...across Code and Supply Chain, dramatically shrinking the backlog.Founded in San Francisco and backed by Menlo Ventures, Felicis...  ...Lyft, and Dropbox. Learn more at semgrep.dev.About the roleAs a Backend Engineer, you’ll work on our backend and infrastructure systems to design... 
    Currently hiring
    Work at office
    Local area
    Remote work
    Weekend work
    3 days per week

    Semgrep

    San Francisco, CA
    2 days ago
  •  ...our client. Own the design and delivery of backend services for a data-heavy software platform, working directly alongside the founding team. The work spans high-volume data...  ...failure. Partner with research and product engineers to move new machine learning capabilities... 
    Full time
    Work at office
    Relocation

    Technology , Inc.

    San Francisco, CA
    4 hours ago
  • $200k - $300k

     ...search for a highly skilled Senior/Staff Founding Full-Stack Engineer Agent Systems. The successful...  ...While the position is heavily focused on backend engineering and systems the...  ...Requirements 4 years of professional software engineering experience Proven experience... 
    Full time
    H1b
    Work at office
    Visa sponsorship
    Monday to Friday

    People Hive HR Consultancies LLC

    San Francisco, CA
    7 days ago
  •  ...IT and security. Several design partners today and a founding team of three. Full-Time, In-person, San Francisco, CA...  ...: H-1B, O-1, OPT. About the Role: This is a backend- and systems-heavy founding engineering role where "full-stack" means owning the product and... 
    Full time
    H1b
    Visa sponsorship

    Thomas Talent Network

    San Francisco, CA
    4 days ago
  • Frontend Engineer (with familiarity of full stack) (Founding Team) Location: San Francisco Bay Area Type: Full-Time Compensation: Competitive salary + meaningful...  ...Next.js Implement intuitive, minimal UX for complex backend and AI workflows — including dashboards, agents,... 
    Full time
    Temporary work

    Fabrion

    San Francisco, CA
    18 hours ago
  • Mercator in San Francisco is seeking its first product engineer to architect and build the core systems powering a simulation-driven product...  ...workflows, translate them into system design, and own the backend logic that turns complex scenarios into clear, actionable outcomes... 

    Mercator Inc

    San Francisco, CA
    8 hours ago
  • We want a full stack engineer to join our team as our third engineer. You are passionate to use those skills for the greater good. You...  ...React] - Customer-facing, web-based dashboard [Node + React] - Backend services to integrate with pharmacy switches and calculate the... 

    MoTek Technologies

    San Francisco, CA
    1 day ago
  •  ...Area California Fully On-site We are seeking an Firmware & Backend Engineer AI Wearables & Edge Systems to work at the intersection of...  ...Flash configure adapt and integrate vendor firmware and device software. Work with embedded Linux RTOS environments and/or device... 
    Full time
    Visa sponsorship

    MaxIT Consulting - Max Corporate Group

    San Francisco, CA
    5 days ago
  •  ...efficiently. Looking for thoughtful engineers, to really get in the mind of...  ...the opportunity to join the founding team.  Our Team We are a...  ...to building impactful software. We are inspired to work hand...  .... As part of being a backend engineer, you’ll use a variety... 
    Local area
    Remote work

    Hired Recruiters

    San Francisco, CA
    a month ago
  • Pally is hiring a senior to staff level backend engineer to own and scale the infrastructure that powers a consumer AI assistant. You’ll design, build, run, and be paged for reliability as traffic grows weekly. Expect hands-on work across messaging pipelines, agent runtimes... 

    Pally

    San Francisco, CA
    2 days ago
  • $135k - $250k

     ...problem. Backed by Greylock Partners and founded by early Abnormal Security team...  ...Your skillset ~3+ years developing backend software ~ Designed, implemented, and owned production...  ...We are an AI-native company, and Fable engineers are excited to use AI-powered... 
    Work experience placement
    Work at office
    Relocation package
    3 days per week

    Fable Security LLP

    San Francisco, CA
    18 hours ago
  •  ...live operation. Work alongside a compact engineering group and take new product areas from...  ...You'll Do Take ownership of central backend systems covering routing, delivery and automation...  ...career progression to staff, lead or founding level; long tenure at senior level is... 
    Full time
    Work at office
    Flexible hours

    Software Company

    San Francisco, CA
    2 days ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Founding Backend Software Engineer. Be the first to apply!