principal backend software engineer Jobs in San Francisco, California

Backend Software Engineer
San Francisco, Californiarecruyt Responsibilities include: Building scalable backend services using Node and TypeScript Developing and deploying responsive frontend interfaces using React and Typescript Database integration and management of sensor data, user information, and system configurations...Full Job Details
Principal Software Engineer
Sonoma, CaliforniaHarnham Job Title: Principal Software Engineer Location: San Francisco Bay Area Job Type: Open to remote for highly experienced candidates (6+ years minimum) Summary: My client is a biotech startup leveraging AI/ML technologies to develop precision cancer therapeutics. We are...Full Job Details
Founding Senior Software Engineer (Backend)
San Carlos, CaliforniaRetell AI About Retell Retell is building the new standard for automating call center communications, including sales, support, customer engagement, and retention calls. Backed by Altman Capital, Y Combinator, and top investors, we've raised a $4.7M seed round and hit $10M ARR in 15...Full Job Details
Tech Lead - Backend Engineer
Palo Alto, CaliforniaEternos About Us: Eternos is an AI startup founded by Robert LoCascio in 2024, who was the previous Founder & Previous CEO at LivePerson. Eternos provides realistic AI replicas of individuals that allow people to preserve, share, and interact with their memories and knowledge in...Full Job Details
Senior Backend Engineer
Palo Alto, CaliforniaPace AI Who We Are We founded Pace AI to help 2.3 billion people across the world unlock economic opportunities through English language acquisition and workforce training. We're building Pace AI to accelerate multilingual and lower-literacy working adult learners onto career...Full Job Details
Senior Software Engineer (Backend) - AI Infra
San Jose, CaliforniaBILL Innovate with purpose At BILL, we believe in empowering the businesses that drive our economy. By replacing outdated financial processes with innovative tools, we help businesses-from startups to established brands-make smarter decisions and gain control of their operations...Full Job Details
Senior Software Engineer
San Mateo, CaliforniaConfero Senior Software Engineer - Control Plane Lead San Francisco, CA (remote) Confero is partnering with a well-funded, early-stage startup building a next-gen platform at the intersection of AI, data, and cloud infrastructure. Founded by experienced technical leaders, the team...Full Job Details
Principal Software Engineer - Data Platform
San Mateo, CaliforniaHarnham Principal Software Engineer - Data Platform Location: San Francisco, CA (Remote OK - US only) Comp: $230K-$280K base + equity About the Role: We're looking for a Principal Software Engineer to help lead the development of a modern, scalable data platform from the ground up...Full Job Details
Backend Software Engineering Manager - Consumer Health Platform
Redwood City, CaliforniaSkyrocket Ventures Backend Software Engineering Manager - Consumer Health Platform Location: Redwood City, CA (you can work from home up to 3x/week) The company's product is in the realms of healthcare, consumer web, consumer mobile, and enterprise software. The company is reducing the cost...Full Job Details
Software Engineer
Santa Clara, CaliforniaMeet Life Sciences Software Engineer Location: San Francisco Bay Area (Hybrid) Industry: Medical Diagnostics Healthcare Technology About the Role As a Software Engineer , you will work on building and maintaining core diagnostic platform, focusing on Python for backend development and React...Full Job Details
Principal Staff Software Engineer, Online Infrastructure
Mountain View, CaliforniaLinkedInLinkedIn was built to help professionals achieve more in their careers, and every day, millions of people use our products to connect, discover opportunities, and gain insights. Our global reach allows us to make a direct impact on the world's workforce in ways no other...Full Job Details
Principal Staff Software Engineer, Developer Productivity
Mountain View, CaliforniaLinkedInLinkedIn is the world's largest professional network, built to help members of all backgrounds and experiences achieve more in their careers. Our vision is to create economic opportunity for every member of the global workforce. Every day our members use our products to make...Full Job Details
Principal Staff Software Engineer - Enterprise Innovation
Mountain View, CaliforniaLinkedInLinkedIn is the world's largest professional network, built to create economic opportunity for every member of the global workforce. Our products help people make powerful connections, discover exciting opportunities, build necessary skills, and gain valuable insights every...Full Job Details
Software Engineer
Sonoma, CaliforniaOCTOPYD Why this matters Hiring remains slow, manual, and biased, even in 2025. Octopyd is changing that. We&re building AI-native systems that source, evaluate, and engage talent automatically, giving recruiters "super-powers" and giving candidates a fairer shot. The software you...Full Job Details
Principal Software Engineer - Networking - IoT Security Startup
San Mateo, CaliforniaSkyrocket Ventures Principal Software Engineer - Networking - IoT Security Startup Location: Sunnyvale CA (you must work in the office 1 day per week) The company's office is in Sunnyvale, and you could work from home 4x/week. The company's product involves IoT, cybersecurity, and healthcare....Full Job Details
Algorithms and AI Principal Engineer
San Jose, CaliforniaASML$186750.00 - 311250.00 a yearIntroduction to the job The Algorithms and Physical Modeling Principal Engineer is responsible to drive the technology activities related to algorithms utilizing machine-learning as well as stochastic and physical modeling methods for electrical and physical defect...Full Job Details
Algorithms and AI Principal Engineer
San Jose, CaliforniaASML$186750.00 - 311250.00 a yearIntroduction to the job The Algorithms and Physical Modeling Principal Engineer is responsible to drive the technology activities related to algorithms utilizing machine-learning as well as stochastic and physical modeling methods for electrical and physical defect...Full Job Details
ANDROID SOFTWARE ENGINEER II
Mountain View, CaliforniaRyzen SolutionsWe are seeking an ANDROID SOFTWARE ENGINEER II to join our team in a SOFTWARE DEVELOPMENT company in MOUNTAIN VIEW. This position is a Contract-W2 role with Onsite work set-up. The ideal candidate will have experience building mobile POCs, integrating backend technologies...Full Job Details
Lead Software Engineer
Livermore, CaliforniaRonbow Corp Tech Lead - Internal Tools & Automation Location: Onsite in Livermore, CA About the Role Ronbow is a fast-growing cabinetry company reinventing how the $300B home renovation market works. We're looking for a hands-on Lead Software Engineer to own and modernize the backbone...Full Job Details
Backend Engineer 32257
San Ramon, CaliforniaStealth Startup Job Summary: We are looking for a Senior Backend Engineer with 5+ years of experience, specializing in API integration, to join our growing team. You'll play a critical role in designing and implementing robust backend systems and integrating third-party and internal APIs...Full Job Details
Senior Software Engineer - AI Fintech
San Francisco, CaliforniaGreylock Funding Round : Series A Industry: AI Fintech Role: Senior Software Engineer - Backend generalist Location: In person in SF, SOMA Greylock recently invested in a company developing AI technology designed for financial crime investigations and helps financial services,...Full Job Details
Software Engineer, Hypergrowth AI Coding
San Francisco, CaliforniaRecruiting From Scratch$160000.00 - 300000.00 a year Who is Recruiting from Scratch Recruiting from Scratch is a premier talent firm that focuses on placing the best product managers, software, and hardware talent at innovative companies. Our team is 100% remote and we work with teams across the United States to help them...Full Job Details
Senior Software Engineer, Annotation Systems
San Carlos, CaliforniaObvio About Obvio AI Each year, more than 7,500 pedestrians are killed by drivers in the U.S.-a number that has increased by 70% over the past decade. Despite growing awareness, most cities still struggle to curb dangerous driving. "Vision Zero" efforts across the country are...Full Job Details
Lead Software Engineer
Menlo Park, CaliforniaCardlytics About Cardlytics Remember that time you got cash back on a cup of coffee through your banking app? That was us. Cardlytics (NASDAQ: CDLX) is the industry-leading purchase intelligence and incentives platform. We are a product-driven company that cares about three things:...Full Job Details
Principal Security Researcher
San Francisco, CaliforniaRequest Technology - Craig JohnsonOpen + Bonus We are unable to sponsor for this permanent Full time role Position is bonus eligible Prestigious Enterprise Security Services Company is currently seeking a Principal Security Researcher. Candidate will contribute to a number of strategic research initiatives to develop...Full Job Details