Backend Developer jobs in San Francisco hiring now at vetted startups and product companies on Alion, updated daily. Average salary around $272,233/year. Compare remote, hybrid and on-site positions with relocation and visa sponsorship. Browse and apply today.
base-layer.ai · HQ: New York, United States · Financial AI · Fraud Detection · RegTech, AML & Compliance · Likely startup · Hiring 11, 1 new
HQ: New York, United States · Financial AI · Fraud Detection · RegTech, AML & Compliance · Likely startup · Hiring 11, 1 new
Headquartered in New York City, New York, Base Layer is an artificial intelligence financial technology company specializing in automated business verification and risk management. The company offers a modular data platform that unifies business identity, credit intelligence, and fraud prevention workflows for banks, lenders, and fintech enterprises. By replacing fragmented manual checks with automated decisioning and real-time risk intelligence, it enables financial institutions to prevent B2B fraud while accelerating customer onboarding.
trytrueclaim.com · HQ: San Francisco, United States · Medical AI · Health Insurance & Benefits · Startup · Hiring 3
HQ: San Francisco, United States · Medical AI · Health Insurance & Benefits · Startup · Hiring 3
TrueClaim is an AI-native healthcare benefits administration platform that automates claims adjudication and reduces costs for self-insured employers. The company leverages continuous AI agents to detect billing errors, identify care gaps, and provide real-time financial transparency for plan sponsors. Headquartered in San Francisco, California, it delivers modern third-party administrator services and digital tools to streamline overall employee benefit workflows.
withbasis.co · HQ: San Francisco, United States · AI Training Data & Annotation · Startup · Trust A · Hiring 28
HQ: San Francisco, United States · AI Training Data & Annotation · Startup · Trust A · Hiring 28
Basis is a company that supplies human expertise and data to frontier AI developers and describes itself as the human foundation behind frontier AI. Its customers include leading research institutions, and it hires founding engineers, machine learning engineers and forward deployed engineers. The company is headquartered in San Francisco, United States.
unusual.ai · HQ: San Francisco, United States · Custom Software Development · Machine Learning · 11-50 employees · Startup · Hiring 2
HQ: San Francisco, United States · Custom Software Development · Machine Learning · 11-50 employees · Startup · Hiring 2
AI models advise, recommend, and increasingly make buying decisions for your prospects. Unusual helps make sure that those prospects end up in your pipeline rather than your competitors.
specter.com · HQ: San Francisco, United States · IoT Platforms & Solutions · Sensors & Transducers · Est. 2021 · Likely startup · Trust B · Hiring 32
HQ: San Francisco, United States · IoT Platforms & Solutions · Sensors & Transducers · Est. 2021 · Likely startup · Trust B · Hiring 32
Specter is an American hardware and software startup founded in 2021 that builds connected sensing systems under the tagline Creating a software defined physical world. It designs, manufactures and deploys its own devices, hiring RF systems, mechanical and manufacturing engineers as well as deployment operations staff. The company is headquartered in San Francisco, California, United States.
prelim.com · HQ: San Francisco, United States · Financial Software & Embedded Finance · Startup · Hiring 6
HQ: San Francisco, United States · Financial Software & Embedded Finance · Startup · Hiring 6
Prelim helps financial institutions open accounts faster with digital onboarding, account maintenance, and 50+ banking integrations. Trusted by banks and credit unions.
krea.ai · HQ: San Francisco, United States · Generative Image · 1-10 employees · Est. 2022 · Startup · Trust B · Hiring 13, 2 new
HQ: San Francisco, United States · Generative Image · 1-10 employees · Est. 2022 · Startup · Trust B · Hiring 13, 2 new
KREA is a company founded in 2022 that builds real-time generative visual tools for designers and artists. Its canvas updates images as the user sketches or types, and the product bundles upscaling, style training and video generation across multiple underlying models. It became popular with creative professionals who wanted control and speed rather than one-shot prompting.
shiboleth.ai · HQ: San Francisco, United States · RegTech, AML & Compliance · 11-50 employees · Startup · Hiring 1
HQ: San Francisco, United States · RegTech, AML & Compliance · 11-50 employees · Startup · Hiring 1
Shiboleth is a start-up that treats bank compliance as an engineering problem, using agents and pipelines to reperform a bank’s compliance programme on all of a fintech’s files instead of a five percent sample. It combines deterministic rules with LLM-as-judge evaluation, and its job ads seek a founding full stack engineer. The company is headquartered in San Francisco, United States.
vitalize.care · HQ: San Francisco, United States · HR & Recruiting AI · Hospital Operations Software · 1-10 employees · Est. 2021 · Startup · Trust A · Hiring 19, 2 new
HQ: San Francisco, United States · HR & Recruiting AI · Hospital Operations Software · 1-10 employees · Est. 2021 · Startup · Trust A · Hiring 19, 2 new
Vitalize is a healthcare software company whose AI platform helps hospitals manage nurse staffing, scheduling, patient flow and bed capacity in one system. Health systems use it to forecast demand and plan workforce and capacity in advance. The company was founded in 2021 and is headquartered in San Francisco, California, United States.
planetscale.com · HQ: San Francisco, United States · Cloud Platforms (IaaS & PaaS) · Databases & DBMS · 51-200 employees · Est. 2018 · Startup · Trust A · Hiring 10
HQ: San Francisco, United States · Cloud Platforms (IaaS & PaaS) · Databases & DBMS · 51-200 employees · Est. 2018 · Startup · Trust A · Hiring 10
PlanetScale is a database company that offers a managed cloud database platform built on Vitess, the open source sharding system created at YouTube, and on Postgres. Its service provides horizontally scalable MySQL-compatible and Postgres databases with branching, non-blocking schema changes and high availability for software companies. The company is headquartered in San Francisco, California, United States.
afterquery.com · HQ: San Francisco, United States · LLM & Generative AI · Foundation Models · Artificial Intelligence · 201-500 employees · Startup · Trust A · Hiring 28
HQ: San Francisco, United States · LLM & Generative AI · Foundation Models · Artificial Intelligence · 201-500 employees · Startup · Trust A · Hiring 28
AfterQuery captures how experts reason and turns real-world professional work into high-quality training data for frontier foundation models.
manicule.com · HQ: San Francisco, United States · AI Development Tools · 51-200 employees · Startup · Hiring 9
HQ: San Francisco, United States · AI Development Tools · 51-200 employees · Startup · Hiring 9
Manicule is building AgentRel, a new category. Tomorrow's users aren't developers, they're agents. We get your product discovered and used by AI agents: docs, GEO, and social content built for how agents read.
conductor.build · HQ: San Francisco, United States · Developer Tools · AI Development Tools · 51-200 employees · Est. 2024 · Startup · Hiring 3
HQ: San Francisco, United States · Developer Tools · AI Development Tools · 51-200 employees · Est. 2024 · Startup · Hiring 3
Conductor is a Y Combinator Summer 2024 start-up that builds developer tools for teams working with AI coding agents, including cloud sandboxes for running coding agents in isolation. Its small in-person team hires design, product and backend engineers. The company is headquartered in San Francisco, United States.
corgea.com · HQ: San Francisco, United States · Application Security · 51-200 employees · Est. 2023 · Startup · Hiring 7
HQ: San Francisco, United States · Application Security · 51-200 employees · Est. 2023 · Startup · Hiring 7
Corgea uses large language models to find and automatically fix security vulnerabilities in application code. Founded in 2023 in San Francisco, it focuses on business logic flaws that traditional static analysis tools miss. The product proposes patches as pull requests for developers to approve.
build.ai · HQ: San Francisco, United States · AI Training Data & Annotation · 201-500 employees · Likely startup · Hiring 25
HQ: San Francisco, United States · AI Training Data & Annotation · 201-500 employees · Likely startup · Hiring 25
About Build AI. Build AI is the data hyperscaler for Physical AI. We're vertically integrated across hardware, manufacturing, logistics, collection, and model training to scale the physical labor dataset orders of magnitude more than anyone in the world.
aviator.co · HQ: McKinney, United States · Software Testing & QA · Developer Tools · 51-200 employees · Est. 2016 · Hiring 5
HQ: McKinney, United States · Software Testing & QA · Developer Tools · 51-200 employees · Est. 2016 · Hiring 5
Replace code reviews with verified intent Aviator Verify Software development is about creating, not waiting. AI is powerful, but only when used right.
sf-tensor.com · HQ: San Francisco, United States · Cloud Platforms (IaaS & PaaS) · AI Compute & Inference · Startup · Hiring 7
HQ: San Francisco, United States · Cloud Platforms (IaaS & PaaS) · AI Compute & Inference · Startup · Hiring 7
Train the models only you can build. SF Tensor provides one optimized, cross-vendor training stack for enterprise post-training and frontier pre-training.
arini.ai · HQ: San Francisco, United States · Custom Software Development · 51-200 employees · Startup · Hiring 2
HQ: San Francisco, United States · Custom Software Development · 51-200 employees · Startup · Hiring 2
Hire Arini to answer your calls and manage your appointments 24/7. Trusted by hundreds of DSO, Dental Groups, and Solo Practices across the US and Canada.
