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Series B · Backend Engineer

Series B AI Startup Backend Engineer Jobs

There are currently 43 open Backend Engineer jobs across 28 Series B AI startups. Every listing links straight to the company's official application page, deduplicated and refreshed daily.

43Open roles
28Companies hiring
Oct 27, 2026Last updated
01

Open Backend Engineer Roles at Series B AI Startups

RoleCompanyStageLocationPosted
Senior Backend EngineerHarmonic SecuritySeries BMultiple locationsOct 27, 2026
Senior Backend EngineerErnestaSeries BMultiple locationsOct 26, 2026
Senior Backend Engineer - (Django)PhotoRoomSeries BParisOct 26, 2026
Backend Engineer (Product Growth)HiggsfieldSeries BAlmaty, KazakhstanOct 20, 2026
Compiler Backend EngineerNormalSeries BMountain ViewOct 20, 2026
Staff Backend Engineer | Remote, US & CanadaCubeSeries BRemote (United States & Canada)Oct 19, 2026
Staff Platform/Backend EngineerTypefaceSeries BMultiple locationsOct 19, 2026
Backend Software Engineer, ProductHiggsfieldSeries BAlmaty, KazakhstanOct 17, 2026
Backend Software Engineer, AgenticHiggsfieldSeries BAlmaty, KazakhstanOct 17, 2026
Backend Software Engineer, Trust & Safety (Anti-Fraud)HiggsfieldSeries BAlmaty, KazakhstanOct 17, 2026
Principal Backend EngineerBlitzySeries BIndiaOct 15, 2026
Staff Backend EngineerBlitzySeries BIndiaOct 15, 2026
Senior Backend Engineer, ForgeTwelve LabsSeries BSeoul, South KoreaOct 15, 2026
Principal/ Sr Principal Backend EngineerEndor LabsSeries BMultiple locationsOct 12, 2026
Senior Backend Engineer (Golang)Endor LabsSeries BMultiple locationsOct 12, 2026
Sr/Staff Backend Engineer (Golang)Endor LabsSeries BMultiple locationsOct 12, 2026
Staff Backend Engineer (Golang)Endor LabsSeries BMultiple locationsOct 12, 2026
Senior Backend Software Engineer, AI Observability & Evals Platform (NYC)LangChainSeries BNew York, NYOct 8, 2026
Senior Backend Engineer, Core Trading SystemsNovigSeries BNew YorkOct 8, 2026
Backend Engineer, Collection PlatformVannevar LabsSeries BRemoteSep 30, 2026
Senior Software Backend Engineer, FoundationsNetbox LabsSeries BMultiple locationsSep 28, 2026
Back-End Software Engineer InternAwardcoSeries BMultiple locationsSep 22, 2026
Staff Software Backend Engineer, Tech Lead - FoundationsNetbox LabsSeries BMultiple locationsSep 21, 2026
Staff Backend EngineerFomoSeries BNew York CitySep 14, 2026
Senior Backend Software Engineer, AI Observability & Evals Platform (LangSmith)LangChainSeries BMultiple locationsSep 12, 2026
Senior Backend EngineerMintlifySeries BSan FranciscoSep 10, 2026
Sr. Backend Engineer, AI ProjectsPinwheelSeries BMultiple locationsSep 10, 2026
Sr. Backend Engineer, IntegrationsPinwheelSeries BMultiple locationsSep 10, 2026
Senior Backend EngineerbunchSeries BSão PauloSep 9, 2026
Staff Backend Engineer, Data PlatformOsmoSeries BMultiple locationsAug 31, 2026
(Senior) Backend EngineerbunchSeries BMultiple locationsAug 20, 2026
(Senior) Backend Engineer (f/m/d)bunchSeries BBerlinAug 20, 2026
Backend EngineerMintlifySeries BSan FranciscoAug 14, 2026
Senior Backend EngineerZerionSeries BRemoteAug 11, 2026
Senior Backend Engineer (Full-Stack Capable)OrkesSeries BMultiple locationsAug 3, 2026
Senior Back End EngineerGlowSeries BTel AvivJul 21, 2026
Backend EngineerTownSeries BMultiple locationsApr 23, 2026
Backend EngineerHiggsfieldSeries BAlmaty, KazakhstanApr 20, 2026
Staff Backend EngineerMorpho LabsSeries BMultiple locationsApr 1, 2026
Senior Backend Software EngineerSentraSeries BMultiple locationsMar 2, 2026
Backend Engineer (Mid-Level)SpadeSeries BRemote (US/Canada)Jan 12, 2026
Backend EngineerMeshy AISeries BMultiple locationsJan 9, 2026
Senior Backend Software Engineer, AI Observability & Evals Platform (SF)LangChainSeries BMultiple locationsJan 8, 2026
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FAQ

How many Backend Engineer jobs are open at Series B AI startups?

There are currently 43 open Backend Engineer jobs across 28 Series B AI startups on Fast AI Jobs.

Why filter Backend Engineer jobs by funding stage?

Funding stage signals company size, runway, and equity upside. Filtering to Series B startups narrows the list to Backend Engineer roles at companies at a comparable point in their growth.

How often is this list updated?

Listings are refreshed daily from official company career pages and deduplicated by posting. Every link points to the original application page.