Requirements management and AI agents for hardware teams: a live systems graph linking requirements, architecture, CAD, simulation and test
Flow Engineering builds a requirements and systems-engineering platform for hardware teams that iterate like software companies. Instead of a static requirements database, Flow keeps requirements, architecture, interfaces, budgets and tests in a live systems graph tied into CAD, simulation, code and test tools, so engineers can branch a proposed change and see its impact before it merges; its v3 release in June 2026 added AI agents for impact analysis, mass/cost/power budgets and compliance. Customers include Rivian (about 1,500 engineers designing R1, R2 and R3 in Flow), Joby, Skydio, Astranis, Stoke, Isar Aerospace, Pacific Fusion and Xcimer Energy, and in February 2026 Rivian and Volkswagen Group Technologies (RV Tech) signed a three-year strategic partnership to run their software-defined-vehicle engineering on it. Founder and CEO Pari Singh raised an $8.5M seed led by EQT Ventures in 2022 and a $23M Series A led by Sequoia in October 2025; in September 2026 the company announced a $50M Series B at a $750M valuation co-led by Valor Equity Partners and Atreides Management, with Sequoia participating and Roelof Botha joining the board.
Business/Productivity Software📍 San Francisco, CAFounded 2016
Current Valuation
$750M
as of 2026-09-30
PRIVATE
QL Price
$750M
0% vs last round
QuantLogix's current estimate for Flow Engineering, published 2026-10-14 — in line with the last disclosed round of $750M (2026-09-30).
Confidence
low
Basis
round anchored
What backs this price
Last disclosed round
$750M
2026-09-30
weight 0.97
How this price has held up
No round has priced for Flow Engineering since QuantLogix began publishing a price for it, so there is nothing to grade yet. The claim above is on the record from 2026-10-14 and will be graded against the next priced round. See the full accuracy record →
Which publicly-traded funds already hold it, what $10,000 buys, and whether any route is open to you.
Cite this price as QuantLogix QL Price, Flow Engineering, 2026-10-14 (2418f5c32054ba61).
The id pins this exact claim, so a citation stays checkable after the price moves.
Model estimate for research — not a quote, target price, or investment advice.
IPO Outlookprivate
Is Flow Engineering going public?
No. Flow Engineering is private and has not filed to go public. There is no S-1 on file.
What is Flow Engineering's valuation in 2026?
Flow Engineering is valued at $750M as of 09/30/2026, set by its Series B ($50M, Sep 2026). That is the last confirmed mark, not a live price — private shares do not trade continuously.
Has Flow Engineering filed an S-1?
No public S-1 is on file for Flow Engineering.
Who are Flow Engineering's investors?
Flow Engineering's investors include Sequoia Capital, Valor Equity Partners, Atreides Management, EQT Ventures, Human Capital, Evantic and 9 more.
How much has Flow Engineering raised?
Flow Engineering has raised $81.5M in total across 3 disclosed rounds, most recently a Series B of $50M in Sep 2026.
Is Flow Engineering publicly traded — can you buy Flow Engineering stock?
No. Flow Engineering is a private company — its shares are not listed on any exchange and there is no ticker. The routes to exposure are pre-IPO secondary marketplaces and funds (accredited investors), employee tender offers when the company runs one, and public companies with read-through exposure. QuantLogix maps every route it can verify for Flow Engineering on its Pre-IPO Access Desk.
Answers are derived from the roster record shown on this page — filing status, last round and confirmed marks. Where the record is silent, the answer says so rather than guessing.
Company Profile
CEO
Pari Singh
Founded
2016
HQ
San Francisco, CA
Employees
25
Total Raised
$81.5M
Est. Revenue
$4M (2026-02)
Last Round
Series B — $50M (Sep 2026) · Lead: Valor Equity Partners and Atreides Management (co-leads)
IPO Status
private
Fundraising Status
Series B · $50M · 1 mo ago
privateTotal raised $81.5M3 disclosed rounds
Series B Impact
Round Size
$50M
Primary financing announced
Post-Money Valuation
$750M
Company-announced mark
Round / Post-Money
6.7%
New capital ÷ post-money
Disclosed Funding
$81.5M
Cumulative disclosed rounds
Step-up compares disclosed post-money valuations. Round / post-money is a financing-size ratio, not an ownership or dilution estimate.
Growth & Valuation
Capital raised per round
Charts built from publicly disclosed funding rounds and revenue estimates. Approximate, not real-time, not investment advice.
Funding History
Round
Amount
Date
Lead Investor
Post-Money
Series B
$50M
Sep 2026
Valor Equity Partners and Atreides Management (co-leads)
$750M
Series A
$23M
Oct 2025
Sequoia Capital
—
Seed
$8.5M
Dec 2022
EQT Ventures
—
Vertical Intelligence — Defense / Aerospace
No name-verified federal prime awards for Flow Engineering in the last 36 months on USASpending.gov — revenue may be classified, flow through subcontracts, or be non-US. Absence of a registry match is reported as-is.
Checked usaspending.gov as of 2026-10-14. Re-checked weekly.
Talent Signal
Hiring trend
▲ Hiring uptrend
+32% vs 2026-09
Open roles
29
via ashby
Product-build share
41%
engineering, research, product, design
Trajectory
expanding
balanced build + GTM — 41% builders vs 59% go-to-market/G&A — scaling both sides.
No tracked executive churn; open roles trending up.
Counted from Flow Engineering's live job board as of 2026-10-13; role functions classified from posting titles. Open-role counts are an activity signal, not headcount. Refreshed monthly.
Founders & Key People
Pari Singh
Investors
Sequoia Capital · Valor Equity Partners · Atreides Management · EQT Ventures · Human Capital · Evantic · SV Angel · Odyssey · Backed VC · Patrick Collison · John Collison · David Helgason · Kyle Parrish · Charlie Songhurst · Matt Clifford
Products
Flow requirements platform - iterative requirements and key design parameters (mass, power, thermal, interfaces) that every mechanical, electrical and software engineer works from, with branching, merging and baselines
Systems graph - requirements, architecture, interfaces, components, tests and compliance evidence linked in one flexible data model so a change shows its downstream impact
Flow Agents (Flow v3, launched June 2026) - impact-analysis, mass/cost/power budget and safety/regulatory compliance agents plus user-built agents that propagate changes across CAD, simulation, code and test
Integrations - CAD (Dassault, Siemens NX, Fusion 360, SolidWorks), simulation (ANSYS, Abaqus), GitHub, and test tooling (LabVIEW, TestStand, dSPACE)
Regulated deployments - cloud, GovCloud or self-hosted, with ITAR/EAR alignment, NIST 800-171/CUI and SOC 2 Type II
Requirements ManagementSystems EngineeringHardware EngineeringEngineering SoftwareAI AgentsAerospaceAutomotiveDefenseSeries B
Private-company numbers are not real-time. Reflects publicly disclosed valuations from press releases, news reports, and tender offers as of 2026-09-30. Refreshed quarterly.