Backend Developer jobs in San Francisco hiring now at vetted startups and product companies on Alion, updated daily. Average salary around $276,456/year. Compare remote, hybrid and on-site positions with relocation and visa sponsorship. Browse and apply today.
angellist.com · HQ: San Francisco, United States · Financial Software & Embedded Finance · Custody & Fund Administration · 201-500 employees · Est. 2010 · Trust A · Hiring 33, 11 new
HQ: San Francisco, United States · Financial Software & Embedded Finance · Custody & Fund Administration · 201-500 employees · Est. 2010 · Trust A · Hiring 33, 11 new
AngelList is a venture capital infrastructure and fund administration company headquartered in San Francisco, California. Founded in 2010 by Naval Ravikant and Babak Nivi, it provides software and services for venture funds, rolling funds, syndicates and startups, covering fund formation, fund accounting, banking, tax and reporting. Its former recruiting business was spun off as Wellfound, and it hires product managers, fund operations and accounting staff in San Francisco, New York and the Philippines.
salespatriot.com · HQ: San Francisco, United States · Sales Enablement · Defense Manufacturing · 51-200 employees · Est. 2024 · Startup · Trust B · Hiring 8
HQ: San Francisco, United States · Sales Enablement · Defense Manufacturing · 51-200 employees · Est. 2024 · Startup · Trust B · Hiring 8
About us We believe the West's advantage depends on supply chains that actually work. Who we are Why we are building SalesPatriot Supply Chain hasn't kept up with the world it serves.
sentra.app · HQ: San Francisco, United States · Intranet & Knowledge Management · AI Agents · 11-50 employees · Startup · Trust B · Hiring 3
HQ: San Francisco, United States · Intranet & Knowledge Management · AI Agents · 11-50 employees · Startup · Trust B · Hiring 3
Sentra is the managed organization memory: it records what your teams know, resolves it into one queryable memory, and gives every person and AI agent the same context.
zed.co · HQ: San Francisco, United States · Financial AI · Digital Banks & Neobanks · Startup · Trust B · Hiring 9, 2 new
HQ: San Francisco, United States · Financial AI · Digital Banks & Neobanks · Startup · Trust B · Hiring 9, 2 new
Zed is a financial technology company building an AI-native, licensed neobank in the Philippines for young professionals in global markets. Its senior ML data scientist works on credit models, account management and fraud detection. The company is headquartered in San Francisco, California, United States.
simile.com · HQ: Brooklyn, United States · Artificial Intelligence · AI Agents · 201-500 employees · Est. 2016 · Startup · Trust A · Hiring 9, 1 new
HQ: Brooklyn, United States · Artificial Intelligence · AI Agents · 201-500 employees · Est. 2016 · Startup · Trust A · Hiring 9, 1 new
Simulate how real customers respond to a launch, price change, or campaign — before you ship. Built by the Stanford researchers behind generative agents.
kernel.sh · HQ: San Francisco, United States · Developer Tools · 51-200 employees · Est. 2025 · Startup · Trust B · Hiring 9
HQ: San Francisco, United States · Developer Tools · 51-200 employees · Est. 2025 · Startup · Trust B · Hiring 9
Kernel provides browser infrastructure for AI agents and web automations, letting developers spin up cloud browsers in milliseconds and let agents log in and act on websites on behalf of people. It runs sandboxed Chromium on a unikernel platform with sub-150 ms cold starts, stealth mode, residential proxies, CAPTCHA solving, live view, session replay, persistent profiles and a serverless app platform that co-locates agent code with browsers. Founded in 2025 in San Francisco and part of YC S25, Kernel serves Cash App and Rye and raised $22 million across seed and Series A rounds led by Accel.
revenuevessel.com · HQ: San Francisco, United States · Sales Enablement · B2B Company & Contact Data · Est. 2022 · Likely startup · Hiring 2
HQ: San Francisco, United States · Sales Enablement · B2B Company & Contact Data · Est. 2022 · Likely startup · Hiring 2
Revenue Vessel is a venture-backed software company that sells import and trade data to logistics companies and their sales teams. Its product supports prospecting for freight and logistics sellers, and the company hires sales development representatives and software engineers. The company is headquartered in San Francisco, California, United States.
sphinxhq.com · HQ: Stafford, United States · RegTech, AML & Compliance · 51-200 employees · Est. 2021 · Startup · Trust B · Hiring 7
HQ: Stafford, United States · RegTech, AML & Compliance · 51-200 employees · Est. 2021 · Startup · Trust B · Hiring 7
Meet Sphinx. Your AI compliance agent that clears KYB & AML cases in minutes. 87% fewer false positives, 98% same-day resolution. Zero integration required. SOC 2 Type II certified.
sphere.com.ai · HQ: San Francisco, United States · Accounting & Tax Software · RegTech, AML & Compliance · Likely startup · Trust C · Hiring 15, 2 new
HQ: San Francisco, United States · Accounting & Tax Software · RegTech, AML & Compliance · Likely startup · Trust C · Hiring 15, 2 new
Sphere is a software company building infrastructure for trade compliance, helping businesses handle the rules of more than 190 sovereign jurisdictions. Its platform treats trade rules as a complex, constantly changing system, and the company hires account executives, growth leads, tax support specialists, trainers and content creators. The company is headquartered in San Francisco, California, United States.
anza.xyz · HQ: San Francisco, United States · Developer Tools · Blockchain Infrastructure · Est. 2024 · Hiring 2
HQ: San Francisco, United States · Developer Tools · Blockchain Infrastructure · Est. 2024 · Hiring 2
Anza is a software engineering and R&D firm dedicated to building core infrastructure, protocols, and developer tools for the Solana blockchain ecosystem. Founded in 2024 by executives and core engineers from Solana Labs, the firm focuses on enhancing network performance, reliability, and decentralization. Its major contributions include the Agave validator client - a major client fork designed to optimize block propagation and reduce latency - alongside core SDKs, token extension protocols, and infrastructure tooling for decentralized application developers.
$180k – $300k per year · Senior · New York · San Francisco · Zurich · London · Remote (United States, United Kingdom, Switzerland) · Full-Time · Senior
$180k – $300k per year · Senior · New York · San Francisco · Zurich · London · Remote (United States, United Kingdom, Switzerland) · Full-Time · Senior
neosigma.ai · HQ: San Francisco, United States · AI Development Tools · AI Agents · Startup · Trust B · Hiring 4
HQ: San Francisco, United States · AI Development Tools · AI Agents · Startup · Trust B · Hiring 4
NeoSigma is an artificial intelligence infrastructure startup working on self-improving AI agent systems. Its platform provides an automated harness and runtime evaluation layer that lets AI agents learn from failures in production. The company is headquartered in San Francisco, California, United States, and also hires engineers in Bengaluru, India.
vantagescore.com · HQ: San Francisco, United States · Credit Bureaus & Rating Agencies · 201-500 employees · Trust B · Hiring 8
HQ: San Francisco, United States · Credit Bureaus & Rating Agencies · 201-500 employees · Trust B · Hiring 8
VantageScore is a credit scoring company that develops credit scoring models and related analytics. Its vacancies include software engineers, data scientists, site reliability engineers, an API product manager, a scrum master and AI engineers. The company is headquartered in San Francisco, California, United States.
payjoy.com · HQ: San Francisco, United States · Buy Now, Pay Later · Consumer Loans & Pawnshops · 1001-5000 employees · Est. 2015 · Trust B · Hiring 74, 6 new
HQ: San Francisco, United States · Buy Now, Pay Later · Consumer Loans & Pawnshops · 1001-5000 employees · Est. 2015 · Trust B · Hiring 74, 6 new
PayJoy is a financial technology company that lets people in emerging markets buy smartphones on credit, using device-locking technology as security and building a credit history for customers who have none. It operates in Mexico, Colombia, Indonesia, India, South Africa and other markets through retail partners and also offers cash loans to customers with a repayment record. Founded in 2015, the company is headquartered in San Francisco, California, United States.
openevidence.com · HQ: Cambridge, United States · Clinical Decision Support · Medical AI · 51-200 employees · Est. 2021 · Startup · Trust B · Hiring 6
HQ: Cambridge, United States · Clinical Decision Support · Medical AI · 51-200 employees · Est. 2021 · Startup · Trust B · Hiring 6
OpenEvidence is a medical artificial intelligence company founded in 2021 that answers clinical questions with citations to peer-reviewed literature. It licenses content from publishers including the New England Journal of Medicine and is free for verified clinicians, funded by advertising. The product has been adopted rapidly by physicians in the United States as a point-of-care reference.
foundation.ai · HQ: San Francisco, United States · Residential Real Estate · PropTech · Trust B · Hiring 3
HQ: San Francisco, United States · Residential Real Estate · PropTech · Trust B · Hiring 3
Foundation is a residential real estate technology company founded by an ex-Opendoor team, whose first product is a customer experience platform for homebuilders. It aims to modernize homebuilding and the experience of buying, selling and owning homes, and hires marketing, customer success and engineering staff. The company is headquartered in San Francisco, United States.
