How many Series B startup jobs are on BuildList?

There are currently 3,244 open roles at Series B companies on BuildList, refreshed hourly from company career pages.

What is it like to work at a Series B startup?

Explore open roles at Series B companies. Filter by sector or role type to focus your search.

Which industries are hiring at Series B companies?

Roles at Series B companies span AI, defense, aerospace, robotics, energy, and more.

How do I apply to Series B startup jobs?

Every listing links straight to the company's own application page — BuildList doesn't sit between you and the employer, so there's no account or middleman.

Series B Startup Jobs — 3244 Open Roles — Page 109

Thea Energy Plasma-Materials Scientist

Kearny, NJ

Job type: Software & Data
Seniority: Mid-Level
Sector: Energy & Climate

Apply

X-Bow Systems Chemical Handling Technician (Entry)

Luling, TX

Job type: Manufacturing & Production
Seniority: Entry-Level
Sector: Aerospace

Apply

Fuse Energy Founding GPU Engineer

Remote · United Kingdom · United States

Job type: Software & Data
Seniority: Senior
Sector: Energy & Climate

Apply

Valar Atomics Senior Manager, Strategic Finance

Torrance, CA

$190k–$230k / year

Job type: Finance, Legal, & Compliance
Seniority: Senior
Sector: Energy & Climate

Apply

Firestorm Staff Mechanical Engineer – Propulsion

San Diego, CA

Job type: Software & Data
Seniority: Entry-Level
Sector: Defense

Apply

Somos Project Manager / PMO Pipeline

Colombia

Job type: Product, Programs, & Systems
Seniority: Senior
Sector: Construction & Housing

Apply

Northwood Network Software Engineer

Torrance, CA

$124k–$205k / year

Job type: Software & Data
Seniority: Mid-Level
Sector: Aerospace

Apply

LangChain Deployed Engineer (Early Career-NYC)

New York, NY

$160k–$175k / year

Job type: Software & Data
Seniority: Entry-Level
Sector: AI App

Apply

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Cowboy Space Corporation Senior Radiation Effects & Resilience Engineer

San Carlos, CA

$185k–$200k / year

Job type: Test, Quality, & Reliability
Seniority: Senior
Sector: Aerospace

Apply

Harmattan AI RF Electronics Engineer (Electronic Warfare)

France

Job type: Electrical & Firmware
Seniority: Mid-Level
Sector: Defense

Apply

Higgsfield Youtube Scriptwriter

Kazakhstan

Job type: Software & Data
Seniority: Mid-Level
Sector: AI App

Apply

Allen Control Systems Manufacturing Engineer

Austin, TX

Job type: Manufacturing & Production
Seniority: Senior
Sector: Defense

Apply

Aalo Atomics Aalo-X Shift Manager

Idaho Falls, ID

Job type: Business & People Ops
Seniority: Mid-Level
Sector: Energy & Climate

Apply

Serval Technical Recruiter

San Francisco, CA

$125k–$200k / year

Job type: Software & Data
Seniority: Mid-Level
Sector: AI App

Apply

Mach Industries Embedded Autonomy Engineer

Huntington Beach, CA · San Francisco, CA

Job type: Software & Data
Seniority: Mid-Level
Sector: Defense

Apply

Apptronik Senior Product Manager - Human Robot Interaction

Austin, TX

Job type: Product, Programs, & Systems
Seniority: Senior
Sector: Robotics

Apply

Thea Energy Mechanical Engineer

Kearny, NJ

Job type: Software & Data
Seniority: Mid-Level
Sector: Energy & Climate

Apply

X-Bow Systems Systems Engineer

United States

Job type: Product, Programs, & Systems
Seniority: Mid-Level
Sector: Aerospace

Apply

Fuse Energy CUDA Engineer

Remote · United Kingdom · United States

Job type: Software & Data
Seniority: Senior
Sector: Energy & Climate

Apply

Valar Atomics Cycle Performance Engineer - Turbomachinery

Torrance, CA

$140k–$215k / year

Job type: Product, Programs, & Systems
Seniority: Senior
Sector: Energy & Climate

Apply

Firestorm Principal Airframe Design Engineer

San Diego, CA

Job type: Software & Data
Seniority: Entry-Level
Sector: Defense

Apply

Somos Analista NOC de Infraestructura de Cómputo

Colombia

Job type: Infrastructure, IT, & Security
Seniority: Mid-Level
Sector: Construction & Housing

Apply

Northwood People Operations Specialist

Torrance, CA

$75k–$115k / year

Job type: Business & People Ops
Seniority: Mid-Level
Sector: Aerospace

Apply

LangChain Security Engineer - Detection & Response

San Francisco, CA · New York, NY

Job type: Software & Data
Seniority: Entry-Level
Sector: AI App

Apply

Cowboy Space Corporation Space Communications Engineer

San Carlos, CA · Seattle, WA

Job type: Software & Data
Seniority: Mid-Level
Sector: Aerospace

Apply

Series B Jobs

Weekly jobs, picked for you.

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