Skip to main content
BuilderBrew.com
JobsInvestorsCompaniesStatsAboutFAQ
BuilderBrew

Insights for software builders, engineers, and growth operators.

Browse jobs

  • All jobs
  • Categories
  • Skills
  • States
  • Cities
  • Counties
  • Experience
  • Location type
  • Employment type
  • Salary
  • Funding
  • Company size
  • Total funding
  • Funded within

Explore

  • About
  • FAQ
  • Companies
  • Investors
  • Stats

Company

  • Terms of Service
  • Privacy Policy

© 2026 BuilderBrew.com. All rights reserved.

Join a startup on the way up — not a bet, not a giant.

Tech roles at Series A–C companies backed by Sequoia, a16z, Benchmark & other top-tier VCs

  • Sequoia
  • a16z
  • Benchmark
  • Accel
  • Greylock
  • Founders Fund
  • General Catalyst
  • Index Ventures
  • Lightspeed
  • Bessemer
  • Coatue
  • Insight Partners
  • IVP
  • NEA
  • Thrive Capital
  • Sequoia
  • a16z
  • Benchmark
  • Accel
  • Greylock
  • Founders Fund
  • General Catalyst
  • Index Ventures
  • Lightspeed
  • Bessemer
  • Coatue
  • Insight Partners
  • IVP
  • NEA
  • Thrive Capital

Open roles

High-signal tech roles at Series A–C companies, refreshed as boards update.

20 results on this page
Jobs per page
PreviousPage 8Next
Pacific Fusion logo
Senior Project Engineer, Steel Structures
1/20Posted 3 days ago

Pacific Fusion · Albuquerque, Bernalillo County, New Mexico

$145,000 - $185,000
Onsite
20 results on this page
Jobs per page
PreviousPage 8Next
Series A
Funded 2 yr ago
$1B-$10B
General Catalyst
Lightspeed Venture Partners
Engineering Drawings
Posted 3 days agoSee job

Pacific Fusion is seeking a Senior Project Engineer to lead procurement, fabrication, and installation of structural steel systems for its fusion energy program. This role manages suppliers, coordinates cross-functional teams, and ensures turnkey delivery of critical equipment structures.

Pacific Fusion logo
Infrastructure Mechanical Engineer
2/20Posted 3 days ago

Pacific Fusion · Albuquerque, Bernalillo County, New Mexico

$116,000 - $174,000
Onsite
Series A
Funded 2 yr ago
$1B-$10B
General Catalyst
Lightspeed Venture Partners
HVAC
Posted 3 days agoSee job

Pacific Fusion is seeking an Infrastructure Mechanical Engineer to oversee integration of mechanical building systems for a nuclear fusion demonstration system. The role involves developing facility mechanical equipment requirements, working with design consultants and contractors, and managing operations and maintenance. Based in Albuquerque, NM with up to 50% travel to San Leandro, CA.

Pacific Fusion logo
Senior Accountant
3/20Posted 3 days ago

Pacific Fusion · Albuquerque, Bernalillo County, New Mexico

$115,000 - $125,000
Onsite
Series A
Funded 2 yr ago
$1B-$10B
General Catalyst
Lightspeed Venture Partners
ERP Systems
Posted 3 days agoSee job

Pacific Fusion is seeking a Senior Accountant to manage accounting activities including monthly close, journal entries, reconciliations, and audits, while supporting the mission to provide clean fusion energy. The role involves building and optimizing financial processes and enabling engineers and scientists as they bring the demonstration system online.

Pacific Fusion logo
Head of Logistics & Inventory
4/20Posted 3 days ago

Pacific Fusion · San Leandro, Alameda County, California

$175,000 - $220,000
Onsite
Series A
Funded 2 yr ago
$1B-$10B
General Catalyst
Lightspeed Venture Partners
Posted 3 days agoSee job

Pacific Fusion is seeking a Head of Logistics & Inventory to own the flow of material across the company, from supplier dock to production line to installation site. This role will build and run logistics and inventory operations across San Leandro, CA and New Mexico sites, ensuring material availability never gates the build.

Pacific Fusion logo
Senior Full Stack Developer
5/20Posted 3 days ago

Pacific Fusion · San Leandro, Alameda County, California

$138,000 - $207,000
Onsite
Series A
Funded 2 yr ago
$1B-$10B
General Catalyst
Lightspeed Venture Partners
Apache Kafka
APIs
CI/CD
Figma
+7 more
Posted 3 days agoSee job

Pacific Fusion is seeking a Senior Full Stack Developer to architect and develop data acquisition systems and web front ends for our pulser-driven inertial fusion system. You will design databases, APIs, and React applications to manage and present data for the pulser factory and Demonstration System.

Daily job alert

Get new VC-backed tech jobs in your inbox every morning.

Narrow your alert

Free daily email. Confirm via link to activate. Unsubscribe anytime.

Pacific Fusion logo
Senior Mechanical Design Specialist
6/20Posted 3 days ago

Pacific Fusion · San Leandro, Alameda County, California

$138,100 - $207,000
Onsite
Series A
Funded 2 yr ago
$1B-$10B
General Catalyst
Lightspeed Venture Partners
Creo Parametric
PTC Windchill
Posted 3 days agoSee job

Pacific Fusion seeks Senior Mechanical Design Specialists to develop advanced mechanical systems for fusion energy, using Creo Parametric and Windchill, with strong CAD expertise and design leadership.

Pacific Fusion logo
Controller
7/20Posted 3 days ago

Pacific Fusion · San Leandro, Alameda County, California

$200,000 - $275,000
Onsite
Series A
Funded 2 yr ago
$1B-$10B
General Catalyst
Lightspeed Venture Partners
Posted 3 days agoSee job

Pacific Fusion is seeking a Controller to lead all accounting and financial operations, including monthly close, financial reporting, and team management. The role involves building and optimizing processes to support the company's mission of providing clean energy.

Pacific Fusion logo
OBA Research Scientist/Engineer – Fusion Energy Systems
8/20Posted 3 days ago

Pacific Fusion · San Leandro, Alameda County, California

$200,000 - $350,000
Onsite
Series A
Funded 2 yr ago
$1B-$10B
General Catalyst
Lightspeed Venture Partners
Control Systems
Posted 3 days agoSee job

Pacific Fusion is seeking accomplished scientists and engineers from U.S. national laboratories to join as Outside Business Activity (OBA) researchers in fusion energy. This role involves leading R&D projects, collaborating across disciplines, and contributing to the development of commercially deployable fusion energy systems. Compensation ranges from $200k to $350k per year (prorated) plus equity.

Pacific Fusion logo
Controls Hardware Engineer
9/20Posted 3 days ago

Pacific Fusion · San Leandro, Alameda County, California

$138,100 - $207,100
Onsite
Series A
Funded 2 yr ago
$1B-$10B
General Catalyst
Lightspeed Venture Partners
Control Systems
Posted 3 days agoSee job

Pacific Fusion is seeking a Controls Hardware Engineer to design and implement control systems for a pulser-driven inertial fusion system. The role involves requirements definition, control system design, PLC programming, and compliance with safety standards. Requires 5+ years of experience in industrial automation.

Pacific Fusion logo
Mechanical Design Engineer
10/20Posted 3 days ago

Pacific Fusion · San Leandro, Alameda County, California

$138,100 - $263,800
Onsite
Series A
Funded 2 yr ago
$1B-$10B
General Catalyst
Lightspeed Venture Partners
CAD
Failure Mode and Effects Analysis (FMEA)
Posted 3 days agoSee job

Pacific Fusion is hiring a Mechanical Design Engineer to design, develop, and validate mechanical components for advanced fusion energy systems, focusing on vacuum seals. The role involves leading experimental design, performing FMEA and tolerance analysis, and mentoring junior engineers.

Daily job alert

Get new VC-backed tech jobs in your inbox every morning.

Narrow your alert

Free daily email. Confirm via link to activate. Unsubscribe anytime.

Pacific Fusion logo
Quality Lead
11/20Posted 3 days ago

Pacific Fusion · Los Lunas, Valencia County, New Mexico

$116,000 - $174,000
Onsite
Series A
Funded 2 yr ago
$1B-$10B
General Catalyst
Lightspeed Venture Partners
Failure Mode and Effects Analysis (FMEA)
Manufacturing Execution Systems (MES)
Posted 3 days agoSee job

Pacific Fusion is seeking a Quality Lead to develop and implement the company's Quality Management System, inspection processes, and safety programs. The role involves working with Operations, Engineering, and Supply Chain to ensure high-quality manufacturing and compliance with standards like ISO 9001 and OSHA. Requires 5+ years of experience in quality engineering or manufacturing.

Pacific Fusion logo
Mechanical Engineer - Pulsed Power
12/20Posted 3 days ago

Pacific Fusion · Fremont, Alameda County, California

$115,000 - $150,000
Onsite
Series A
Funded 2 yr ago
$1B-$10B
General Catalyst
Lightspeed Venture Partners
ANSYS
MATLAB
PSCAD
Python
+1 more
Posted 3 days agoSee job

Pacific Fusion is seeking a Mechanical Engineer to design, build, and operate pulsed power systems for its inertial fusion platform. The role involves high-voltage systems, controls, diagnostics, and data analysis, with a focus on hands-on R&D and system ownership.

Pacific Fusion logo
Senior Mechanical Engineer - Pulsed Power
13/20Posted 3 days ago

Pacific Fusion · Fremont, Alameda County, California

$140,000 - $200,000
Onsite
Series A
Funded 2 yr ago
$1B-$10B
General Catalyst
Lightspeed Venture Partners
ANSYS
Control Systems
Data Analysis
MATLAB
+3 more
Posted 3 days agoSee job

Pacific Fusion is seeking a Senior Mechanical Engineer to design, build, and operate pulsed power systems for its inertial fusion platform. The role involves hands-on work with high-voltage systems, controls, diagnostics, and data analysis, requiring 5+ years of experience.

Pacific Fusion logo
Senior Mechanical Engineer - Pulser Modules
14/20Posted 3 days ago

Pacific Fusion · Fremont, Alameda County, California

$138,100 - $263,800
Onsite
Series A
Funded 2 yr ago
$1B-$10B
General Catalyst
Lightspeed Venture Partners
CAD
Creo
SolidWorks
Thermal Analysis
Posted 3 days agoSee job

Pacific Fusion is seeking a Senior Mechanical Engineer to help design, analyze, and validate mechanical systems for its fusion energy platform. The role involves leading design projects, mentoring junior engineers, and collaborating with multidisciplinary teams. Requires 5+ years of experience and proficiency in CAD and FEA.

Pacific Fusion logo
Facilities Technician
15/20Posted 3 days ago

Pacific Fusion · San Leandro, Alameda County, California

$46.3 - $69.42
Onsite
Series A
Funded 2 yr ago
$1B-$10B
General Catalyst
Lightspeed Venture Partners
CAD Software Proficiency
Electromechanical Systems
HVAC
Machining
Posted 3 days agoSee job

Pacific Fusion is seeking a Facilities Technician to support engineering and operations by installing and maintaining facility infrastructure, troubleshooting equipment, and assisting with test stand builds. The role involves hands-on work with electrical, mechanical, and manufacturing systems, with about 25% of time supporting electro-mechanical technicians.

Daily job alert

Get new VC-backed tech jobs in your inbox every morning.

Narrow your alert

Free daily email. Confirm via link to activate. Unsubscribe anytime.

Pacific Fusion logo
Senior Tooling Engineer
16/20Posted 3 days ago

Pacific Fusion · Los Lunas, Valencia County, New Mexico

$147,700 - $221,600
Onsite
Series A
Funded 2 yr ago
$1B-$10B
General Catalyst
Lightspeed Venture Partners
CAD
Finite Element Analysis
Posted 3 days agoSee job

Pacific Fusion is seeking a Senior Tooling Engineer to design, analyze, and procure custom handling equipment for lifting and transporting large fusion hardware. The role requires onsite presence in Los Lunas, NM and involves heavy rigging, CAD, FEA, and collaboration with engineers and scientists.

Pacific Fusion logo
Senior Controls Infrastructure Engineer
17/20Posted 3 days ago

Pacific Fusion · San Leandro, Alameda County, California

$138,100 - $207,100
Onsite
Series A
Funded 2 yr ago
$1B-$10B
General Catalyst
Lightspeed Venture Partners
Firewalls
Infrastructure as Code
NIST SP 800-171
Zero Trust Architecture
Posted 3 days agoSee job

Pacific Fusion is seeking a Senior Controls Infrastructure Engineer to design, deploy, and operate the network, storage, and compute infrastructure for a 24/7 facility. The role involves network segmentation, Zero Trust, and compliance with NIST SP 800-171.

Pacific Fusion logo
Senior Mechanical Engineer
18/20Posted 3 days ago

Pacific Fusion · San Leandro, Alameda County, California

$156,500 - $234,800
Onsite
Series A
Funded 2 yr ago
$1B-$10B
General Catalyst
Lightspeed Venture Partners
CAD
Creo
Finite Element Analysis
Posted 3 days agoSee job

Pacific Fusion is seeking a Senior Mechanical Engineer to lead the design, development, and validation of mechanical components for advanced fusion energy systems. The role requires expertise in CAD, FEA/CFD, and DFM, with 6+ years of experience. This is a full-time position based in San Leandro, CA.

Pacific Fusion logo
Senior Metrology & Inspection Engineer - Target Fabrication
19/20Posted 3 days ago

Pacific Fusion · San Leandro, Alameda County, California

$175,900 - $263,800
Onsite
Series A
Funded 2 yr ago
$1B-$10B
General Catalyst
Lightspeed Venture Partners
GD&T
Posted 3 days agoSee job

Pacific Fusion seeks a Senior Metrology & Inspection Engineer to ensure dimensional integrity and quality of precision components for its pulsed power fusion system. The role involves developing advanced metrology processes, inspection procedures, and fixtures to meet micron-level tolerances, supporting the path to commercial fusion energy.

Pacific Fusion logo
Senior Mechanical Engineer
20/20Posted 3 days ago

Pacific Fusion · San Leandro, Alameda County, California

$138,100 - $263,800
Onsite
Series A
Funded 2 yr ago
$1B-$10B
General Catalyst
Lightspeed Venture Partners
ANSYS
CAD
Creo
Finite Element Analysis
+2 more
Posted 3 days agoSee job

Pacific Fusion is seeking a Senior Mechanical Engineer to design, analyze, and validate mechanical systems for an advanced fusion energy platform. The role involves leading projects, mentoring junior engineers, and working on precision instrumentation, vacuum systems, and thermal management. Requires 5+ years of experience in mechanical design with CAD and FEA tools.

Daily job alert

Get new VC-backed tech jobs in your inbox every morning.

Narrow your alert

Free daily email. Confirm via link to activate. Unsubscribe anytime.