Backend Systems Engineer(ML, AI) with Early Stage/ Startup/Founder Exp
$160k - $220kTalent Search PRO
Job Description
Job Description
Salary - $160,000 - $220,000
What You'll Own
Backend systems work with a mix of ML and traditional system design / infrastructure
Build features end-to-end across whatever the team is shipping
Cross-functional work with the rest of the engineering team and founders
Help shape the engineering culture as one of the early hires
Requirements
Must-Have
0-3 years of engineering experience (open to recent grads with exceptional signal)
Builder mentality demonstrated through side projects, personal builds, or evidence of shipping outside of day-job scope
Backend foundation with comfort across ML and traditional system design
High agency and high slope: figures things out quickly, ships fast, talks to humans well
SF in-person, willing to grind in a startup environment
Nice-to-Have
Recommendation system, ranking, or ad-experience background
PyTorch fluency
Prior experience at Roblox, Meta, Amazon, or comparable consumer/ad infra companies
Open-source contributions or notable GitHub presence
$150k - $250k
...$250,000 Backend exp (Python, Go,... ...js / Golang AI Experience Generation... ...Design data systems and ML training... ...directly with founders and... ...of software engineering experience with... ...scratch Early engineer at a startup (roughly #1-... ...at an early-stage startup / small...SuggestedH1bWork at officeMonday to FridayWeekend work$150k - $300k
...As a Founding Software Engineer, you will own the... ...infrastructure and production systems to deployment,... ...build, and scale core backend systems powering document... ...response Work closely with the founders and research team to... ...have: Experience serving ML / VLM / GPU-heavy...Suggested$200k - $300k
...ABM platform and AI components... ...production AI systems Work inside... ...years of software engineering experience, with strong product-... ...be a technical founder in the future... ...experience Prior 0-1 startup experience as an early hire Founder... ...stack with backend/infra weight...SuggestedRelocation$180k - $230k
...Only experience from startups that are raising... ...Build and iterate on AI-powered creator... ...alongside AI PMs and ML engineers Build products that... ...development with delightful UI/UX Create systems and see how all the... ...Python skills for backend development Familiarity...SuggestedWork at officeRelocation$180k
...Product and Engineering Clipbook’s mission... ...vertical AI category... ...’re working with 200+ clients... ...Series A in early 2026. What... ...build core backend systems. Drive architectural... ...classical ML models for... ...’re a seed‑stage startup (with Series... ...or technical founder experience...SuggestedFull timeWork at office- Founding Engineer - Early-Stage AI Startup San Francisco, CA (In-Person Only... ...access and engage with essential services.... ...Francisco alongside me (the founder) and our early... ...’ll shape the core systems, the product, and the... ..., and scale core backend systems and APIs Collaborate...Full time
$150k - $300k
Unsiloed AI — Founding Backend Engineer Type: Full-time | On-site... ...OPT Reports to: Founders / research team... ...reliably work with from day one — preserving... ...own production systems end‑to‑end and... ...serving ML / VLM / GPU‑heavy... ...Stanford, etc.) Very early‑stage startup experience (...Full timeH1bWork at officeVisa sponsorship- ...is seeking a Founding Engineer in San Francisco to help... ...the ad network for AI, blending backend engineering with ML and infrastructure. You... ...and ship high-quality systems in a fast-paced startup. Ideal candidates are... ...working directly with founders. This role requires in...
$125k - $200k
Founding AI/ML Engineer Location: San Francisco... ...is a seed‑stage startup (founded 2025)... ...national ‑scale systems before. Backed... ...growing fast with live deployments... ...You'll be an early engineer... ...The work spans backend infrastructure... ...Call with Co-Founder Leetcode Systems...Full timeVisa sponsorship$210k - $285k
...Description Senior Backend... ...Senior Backend Engineer to own and... ...an AI-driven logistics... ...the systems that ingest... ...directly with the founding... ...fast-moving startup... ...not an idea-stage startup —... ...directly with founders on roadmap... ...Familiarity with AI/ML... ...architecture from an early stage...Full timeH1bRelocationVisa sponsorship- Senior Backend Engineer Seeking a Senior Backend Engineer... .... Build core systems for causation analytics... ...marketing datasets with high reliability.... ...collaboration skills. Early-stage or high-growth startup experience with... ...design. Nice to Have AI/ML infrastructure...Casual work
- ...building the AI backbone for... ...fast-growing AI startups design, fine-... ...a full-stack backend for fine-... ...make your AI system better. They... ...Backend Software Engineer (ML... ...collaborate closely with ML engineers... ...role for an early-career engineer... ...moving early-stage team. Strongly...Remote work
$200k
Founding DevOps / Systems / ML Ops Engineer - Physical AI Startup Location: San Francisco, CA (you... ...process of closing series A in early 2026. This is an... ...favorable equity, including founder shares which are stock grants... ...Things you'd be working with include AWS, Azure, their...Work from home- A pioneering technology startup in San Francisco is seeking a skilled backend developer to design and maintain APIs... ...Python and Node.js. Experience in early-stage startups is a plus. This role... ...the opportunity to work closely with founders on impactful projects. #J-18808...
- ...Officer (CTO) | Co-Founder / Equity Partner | AI & WellnessTech... ...AI is an early-stage WellnessTech & HealthTech startup revolutionizing... ...Intelligence Engine to provide personalized... ...app (Frontend/Backend) and our core... ...Work closely with the CEO and... ...to code. AI/ML Familiarity:...Part timeImmediate startFlexible hours
- A leading AI startup in San Francisco is seeking a Lead Founding Backend Engineer to architect and implement the core backend systems for a consumer AI social platform. You will design high-... ...experience in Big Tech and is familiar with AI/ML infrastructures. Strong skills in...
$231k - $318k
...their stores. With the right... ...like a search engine and more like... ...recommendations, and Gen-AI experiences... ...-performance system. You’re... .... AI/ML Familiarity:... ...-performance backend systems, Protocol... ...by a team of early product and engineering... ...Capital, Founders Fund, and DST...Work experience placementWork at officeLocal areaImmediate startRemote workMonday to FridayFlexible hours3 days per week$250k
...Clarke are partnered with an early-stage startup building ground... ...for AI agents - creating... ...evaluation, and runtime systems that allow LLM-powered... .../ Infrastructure Engineer focused on LLM... ...Collaborate with ML and product teams... ...engineering, MLOps, or backend systems roles...- Stealth AI is an early-stage startup in San Francisco seeking an AI-native Backend Engineer to build core data infrastructure. The role focuses on developing and operating data... .... The ideal candidate will have experience with Airflow and a startup mindset, ready to own a...
- Job Openings Lead Founding Backend Engineer (Node, Python, React, AI/ML) - Startup Experience About the job Lead Founding... ...where psychology, recommendation systems, and AI come together to give people... ...define how consumers interact with AI for the next decade, alongside...
$225k - $300k
...'re partnering with a venture-backed AI startup that's building... ...team includes engineering and AI leaders... ...usersWork closely with founders, designers, and... ...engineering expe rienceStrong... ...capabilities with backend... ...onmentsFounding, early-stage, or 0?1 engineerin...Immediate start$180k
...Product and Engineering What You’... ...Collaborate with customers .... ...work spans AI, data engineering, backend, etc., so... ...include: AI/ML Integration... .... As an early member of the... ...’re a seed‑stage startup (with Series... ...systems Experience... ...technical founder is a huge plus...Full timeWork at office$215k - $290k
A leading Voice AI startup is seeking a Senior Software Engineer - Backend to shape the core systems for millions of AI-driven conversations. This role involves working with real-time audio and global telephony, leading complex projects, and collaborating across teams....$300k
A leading AI startup is seeking exceptional Backend Software Engineers to help architect, build, and scale the infrastructure behind their innovative AI systems. Candidates should have over 5 years of backend... ...and collaborating closely with research teams. This fully remote...Remote job- Senior Site Reliability Engineer - AI Infrastructure... ...Daniel Gross to give early-stage startups access to the kind of... ...hyperscalers. We began with a single managed cluster... ...quietly building the systems, network, and... ..., orchestration, and ML frameworks. Drive blameless...Full timeRemote work
$60k - $180k
...for the Founding Backend Software Engineer role at Rebolt (YC... ...‑fits‑all SaaS with their own internal... ...building a cutting‑edge AI agent platform... ...directly with AI/ML systems, web agents, and... ...YC‑backed startup. Qualifications 2... ...interview with a founder to discuss your background...Internship$180k - $225k
...Description Founding Engineer — Confidential (AI Startup, YC/a16z-... ...experiments with the founding... ...to the founder and CEO. What... ...proficiency with a backend focus ~... ...founder or early-stage startup experience... ...fine-tuning ML researchers —... ...session, system design, and behavioral...Full timeRelocationVisa sponsorshipRelocation packageFlexible hours- A pioneering logistics AI company is seeking a Full Stack Software Engineer to join their founding team... ...AI behaviors, working with customers to build tools... ...collaborating with the company's founders. Candidates should have... ..., and a passion for startup culture. Competitive...
$150k - $300k
...and pair it with the full RL... ..., startups, and enterprises... ...raised) led by Founders Fund, with... ...Karpathy (Eureka AI, Tesla,... ...software engineering role focused... ...pace of an early‑stage company... ...REST APIs and backend services in... ...exposure to ML/AI... ...real‑time systems experience...Work at officeRemote workVisa sponsorshipRelocation packageFlexible hours- An innovative AI startup is seeking a skilled backend engineer to develop agentic AI capabilities and optimize infrastructure. The ideal... ...has 2+ years of experience in backend systems, strong Python skills, and proficiency with cloud platforms. You will be responsible for...
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Backend Systems Engineer(ML, AI) with Early Stage/ Startup/Founder Exp. Be the first to apply!
- back-end developer San Francisco, CA
- senior backend developer San Francisco, CA
- java developer backend San Francisco, CA
- backend software engineer San Francisco, CA
- lead backend developer San Francisco, CA
- backend python developer San Francisco, CA
- remote back end developer San Francisco, CA
- entry level back-end developer San Francisco, CA
- ground systems engineer San Francisco, CA
- advanced systems engineer San Francisco, CA

