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What they pay

Commonwealth Fusion Systems salaries

The pay Commonwealth Fusion Systems states on its open roles, as written in each posting and checked daily.

21 of 28 open roles state pay

Median base pay

$170Ka year

The median of Commonwealth Fusion Systems's 18 open roles that state pay in US dollars, as of October 2026. Each role counts at the middle of its range.

Middle half of roles
$165K–$188K
Posted ranges run from
$90K–$270K
A typical posted range
$140K–$203K
Median $170K
  • Under $130K: 1 posting
  • $130K–$140K: 1 posting
  • $140K–$150K: 2 postings
  • $150K–$160K: 0 postings
  • $160K–$170K: 4 postings
  • $170K–$180K: 4 postings
  • $180K–$190K: 2 postings
  • $190K–$200K: 1 posting
  • $200K–$210K: 1 posting
  • $210K and up: 2 postings
Middle half of postingsThe restEach bar counts postings by the middle of their posted range.

Every open role with pay

Best-paid first, as each posting states it

  • Principal Mechanical Engineer

    Milpitas, CA
    $187K–$270K a year

  • Head of Origination

    Devens, MA
    $170K–$250K a year

  • Staff Ot/IT Support Engineer

    Milpitas, CA
    $166K–$240K a year

  • Staff Supply Chain Engineer - Molten Salts

    Devens, MA
    $152K–$230K a year

  • Senior Manager Accounting Operations

    US
    $150K–$225K a year

  • Assistant General Counsel

    Devens, MA
    $150K–$225K a year

  • Senior Mechanical Engineer

    Milpitas, CA
    $146K–$210K a year

  • Senior Technical Project Manager

    Devens, MA
    $139K–$210K a year

  • Senior Equipment Engineering Project Manager

    Devens, MA
    $140K–$200K a year

  • Senior R&D Technical Project Manager

    Devens, MA
    $140K–$200K a year

  • Senior Data and Operations Software Engineer

    Devens, MA
    $134K–$205K a year

  • Staff Fuel Cycle Engineer

    Devens, MA
    $130K–$200K a year

  • Staff Materials Engineer

    Devens, MA
    $130K–$200K a year

  • Staff Supplier Integration Manager

    Devens, MA
    $130K–$200K a year

  • Senior Enterprise Solution Architect

    Milpitas, CA
    $110K–$185K a year

  • Manager Process Engineering

    Devens, MA
    $110K–$185K a year

  • Techno-Economic Analyst

    Devens, MA
    $107K–$160K a year

  • Controls Engineer

    US
    $90K–$145K a year

  • AI and Infrastructure Engineering Intern

    Devens, MA
    $25–$32 an hour

  • Intern - NRad & Nuclear Engineer

    Devens, MA
    $25–$32 an hour

  • Production Technician

    Somerville, MA
    $30–$41 an hour

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Commonwealth Fusion Systems salaries: frequently asked questions

How much does Commonwealth Fusion Systems pay?

As of October 2026, the median base pay on Commonwealth Fusion Systems's open roles is $170K a year, across the 18 that state it in US dollars. The middle half pay between $165K and $188K, and the posted ranges run from $90K to $270K.

Does Commonwealth Fusion Systems post salary ranges?

On 21 of its 28 open roles (75%), as of October 2026. Each one's range is listed on this page as Commonwealth Fusion Systems states it.

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