How many Series B startup jobs are on BuildList?

There are currently 3,246 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 — 3246 Open Roles — Page 102

Cowboy Space Corporation Head of Primary Structures

Kent, WA · Washington, D.C.

$150k–$225k / year

Job type: Mechanical & Physical Systems
Seniority: Director
Sector: Aerospace

Apply

Harmattan AI Senior Team Lead, Propulsion & Vehicle Systems

Morocco

Job type: Mechanical & Physical Systems
Seniority: Manager
Sector: Defense

Apply

Sift Staff Backend Engineer

Marina Del Rey, CA

$200k–$260k / year

Job type: Software & Data
Seniority: Staff / Principal
Sector: Aerospace

Apply

Allen Control Systems Recruiter, Manufacturing

Austin, TX

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

Apply

Higgsfield Security Infrastructure Engineer (Almaty)

Kazakhstan

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

Apply

Heron Power Intern, Power Electronics Engineer, Fall 2026

Scotts Valley, CA

Job type: Electrical & Firmware
Seniority: Intern
Sector: Energy & Climate

Apply

Formic Robotics & Automation Project Engineer

Remote · Chicago, IL · Bolingbrook, IL

$120k–$145k / year

Job type: Mechanical & Physical Systems
Seniority: Senior
Sector: Robotics

Apply

Aalo Atomics Training Specialist

Idaho Falls, ID

Job type: Test, Quality, & Reliability
Seniority: Mid-Level
Sector: Energy & Climate

Apply

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Mach Industries Field Drone Technician

Huntington Beach, CA

$62k–$83k / year

Job type: Test, Quality, & Reliability
Seniority: Entry-Level
Sector: Defense

Apply

Serval Deployment Success Manager

San Francisco, CA · United Kingdom

$150k–$220k / year

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

Apply

Apptronik Senior Manager, Hardware Connectivity

Austin, TX

Job type: Electrical & Firmware
Seniority: Manager
Sector: Robotics

Apply

MatX Formal Verification Engineer

Mountain View, CA

$250k–$600k / year

Job type: Electrical & Firmware
Seniority: Senior
Sector: Compute & Semiconductors

Apply

Thea Energy Director - Control, Instrumentation, and Diagnostics (CID) Systems

Kearny, NJ

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

Apply

X-Bow Systems R&D Mechanical/Aerospace Engineer (Advanced Development)

Stennis Space Center, MS · Socorro, NM

Job type: Mechanical & Physical Systems
Seniority: Senior
Sector: Aerospace

Apply

Bedrock Robotics Site Operations Manager

Lockhart, TX

Job type: Business Dev & Customer Ops
Seniority: Manager
Sector: Construction & Housing

Apply

Fractile Senior ML Compiler Engineer

United Kingdom

Job type: Software & Data
Seniority: Senior
Sector: Compute & Semiconductors

Apply

Aalyria Recruiting Coordinator

San Francisco, CA

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

Apply

Mytra Deployment Engineer

Remote · Brisbane, CA

Job type: Test, Quality, & Reliability
Seniority: Mid-Level
Sector: Robotics

Apply

Fuse Energy Infrastructure Development Lead - Europe

Remote · France · Netherlands · Germany · Sweden · Spain · Ireland

Job type: Infrastructure, IT, & Security
Seniority: Mid-Level
Sector: Energy & Climate

Apply

Valar Atomics Staff Controls Software Engineer

Orangeville, UT

Job type: Software & Data
Seniority: Staff / Principal
Sector: Energy & Climate

Apply

Somos Ingeniero de red Senior

Colombia

Job type: Infrastructure, IT, & Security
Seniority: Senior
Sector: Construction & Housing

Apply

Firestorm Supply Chain Manager

San Diego, CA

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

Apply

Northwood Senior Inventory Specialist

Torrance, CA

$62k–$77k / year

Job type: Supply Chain & Procurement
Seniority: Mid-Level
Sector: Aerospace

Apply

LangChain Senior Frontend Platform Engineer, Design Systems

Remote · Boston, MA · New York, NY

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

Apply

Cowboy Space Corporation Senior Power Design Engineer – GPU Server Boards

San Carlos, CA

$150k–$200k / year

Job type: Electrical & Firmware
Seniority: Senior
Sector: Aerospace

Apply

Series B Jobs

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