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Poseidon Aerospace

Poseidon Aerospace

Oceanic freight by water-based takeoff

Avionics Engineer

Full-Time
No salary listed
Mid
Alameda, CA, USA
In Person

About the job

Requirements
  • A background in integrating complex electronic systems on vehicles such as aircraft, unmanned aerial vehicles, or high-performance automotive platforms.
  • Proficiency in schematic capture and harness design tools such as Altium, AutoCAD Electrical, or Capital, together with a solid grasp of basic circuit theory.
  • Comfort using laboratory equipment including multimeters, oscilloscopes, and logic analyzers to debug hardware and signal issues.
  • Ability to understand how a change in a sensor's sample rate may affect the flight controller or pilot's display.
  • Strong communication skills to explain technical trade-offs to non-electrical teammates.
Responsibilities
  • Own the integration of flight computers, sensors, actuators, and communication suites into a cohesive aircraft system.
  • Develop comprehensive wiring diagrams, interconnect drawings, and system schematics.
  • Configure and troubleshoot data bus architectures including Controller Area Network, ARINC 429, RS-232/485, and Ethernet.
  • Support electrical load analysis and ensure clean power distribution and electromagnetic interference/electromagnetic compatibility mitigation across the airframe.
  • Support the bench-to-bird process by building test harnesses, breadboarding circuits, and performing hardware-in-the-loop testing.
  • Act as the technical connection between the software team, mechanical structures team, and flight test pilots.
  • Diagnose aircraft issues during ground and flight testing using oscilloscopes and data logs.
Desired Qualifications
  • Familiarity with DO-160, DO-178, or DO-254 standards.
  • Experience integrating antennas, GPS, or telemetry links.
  • Proficiency in Python or C/C++ for automating tests or parsing flight data.
  • Experience developing quick-turn boards for breakout boxes or signal conditioning.
  • A private pilot license or Part 107 unmanned aerial vehicle certification.

About the company

Poseidon Aerospace provides oceanic freight transportation by using water-based takeoff and landing to move cargo, avoiding traditional airports. Its craft operate in ground effect over water, increasing payload capacity and efficiency. Regulated by the coast guard, the company can enter the market with fewer barriers compared with standard aviation. Its main customers are logistics and freight companies, and it earns revenue from freight transport services. Compared to conventional air freight, Poseidon Aerospace differentiates itself by using infrastructure-free, water-based operations that reduce airport fees and minimize delays from congested routes. The company aims to offer a cost-effective and efficient alternative for freight transport by leveraging its unique waterways-based, ground-effect approach.

Company Size

11-50

Company Stage

Series A

Total Funding

$72.4M

Headquarters

San Francisco, California

Founded

2023

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Simplify's Take

What believers are saying

  • Poseidon closed a $60 million Series A on September 8, 2026.
  • Egret's first uncrewed flight targets year-end 2026 after mid-2026 testing.
  • Poseidon expanded into Alameda's former Navy hangar and is hiring for production.

What critics are saying

  • FAA Part 23 certification and autonomy supplement remain unresolved before 2028 deliveries.
  • A failed year-end Egret flight kills follow-on capital and commercial certification.
  • Xwing, Reliable Robotics, and Elroy Air already race for cargo autonomy customers.

What makes Poseidon Aerospace unique

  • Poseidon combines seaplane Heron and STOL Egret for runway-free cargo missions.
  • Its fixed-wing combustion approach avoids VTOL and battery constraints that cripple payload.
  • TQ Ventures backed a full-stack operator model, not aircraft sales, in September 2026.

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Benefits

401(k) Company Match

Health Insurance

Relocation Assistance

Company Equity

Meal Benefits

Growth & Insights and Company News

Headcount

6 month growth

15%

1 year growth

15%

2 year growth

30%
Defense Daily
Sep 8th, 2026
Unmanned cargo aircraft startup Poseidon Aerospace raises $60 million ahead flight testing.

Unmanned cargo aircraft startup Poseidon Aerospace raises $60 million ahead flight testing. Tuesday, September 8th, 2026 Poseidon Aerospace, which is developing unmanned cargo aircraft for commercial and defense logistics, has raised $60 million in a Series A round that will be used for the upcoming flight-test campaign of its first full-scale aircraft, establish a production line and hire more employees. The investment was led by TQ Ventures. Egret is Poseidon's flagship unmanned aircraft, a regional freighter slated to conduct its first uncrewed flight this year. The aircraft has a payload capacity of 4,000 pounds, a range... Not a subscriber or registered user yet? Please contact us at [email protected] or call us at 888-707-5814 (Monday - Thursday 9:00 a.m. - 5:30 p.m. and Friday 9:00 a.m. - 3:00 p.m. ET.), to start a free trial, get pricing information, order a reprint, or post an article link on your website.

Business Circle
Sep 8th, 2026
Poseidon Aerospace, which plans the first test flight of its pilotless cargo plane by year-end, raised a $60M Series A led by TQ Ventures, after an $11M seed (Sean O'Kane/TechCrunch).

Poseidon Aerospace, which plans the first test flight of its pilotless cargo plane by year-end, raised a $60M Series A led by TQ Ventures, after an $11M seed (Sean O'Kane/TechCrunch). Sean O'Kane / TechCrunch: Poseidon Aerospace, which plans the primary check flight of its pilotless cargo airplane by year-end, raised a $60M Sequence A led by TQ Ventures, after an $11M seed - Silicon Valley is understood for embracing the ethos of "transfer quick and break issues." Poseidon Aerospace's co-founder and CEO David Zagaynov simply needs to maneuver issues quick. September 9, 2026 September 8, 2026

The Techstreet Now
Sep 8th, 2026
Poseidon Aerospace lands $60M ahead of first pilotless test flight

The startup is trying to rethink the economics of cargo aircraft by removing pilots from the equation entirely.

TechAmerica
Sep 8th, 2026
Poseidon Aerospace raises $60 million ahead of first pilotless cargo plane test flight.

Poseidon Aerospace raises $60 million ahead of first pilotless cargo plane test flight. Poseidon Aerospace has raised $60 million to develop autonomous cargo aircraft and prepare for the first test flight of its Egret plane. Sep 8, 2026 - 12:27 Poseidon Aerospace has raised $60 million in Series A funding as the company prepares for the first test flight of its uncrewed cargo aircraft, Egret, expected by the end of this year. Consult Corporate Lawyers Discover more Form An LLC Compare Business Loans Try Operations Software The round follows an earlier $11 million seed investment and will help the startup expand development of autonomous cargo aircraft to reduce the cost of regional air logistics. The company's mission is to move freight more efficiently rather than develop expensive new aviation technologies. Building autonomous cargo aircraft. CEO David Zagaynov and co-founder Parker Tenney founded Poseidon Aerospace after identifying an opportunity to improve cargo transportation through automation and simpler aircraft designs. The company is avoiding some of the approaches used by many advanced air mobility startups. Instead of vertical takeoff systems or electric and hydrogen powertrains, Poseidon is developing fixed-wing aircraft powered by conventional combustion engines. The startup's Egret aircraft and its seaplane variant, Heron, are designed around autonomy and remote operation. Poseidon says removing the need for onboard pilots could cut operating costs and let aircraft spend more time transporting cargo. Defense and commercial cargo markets. Poseidon is initially targeting defence applications and regional commercial cargo operations. The company is designing aircraft to serve remote communities and areas with limited traditional air cargo infrastructure. For commercial operations, Poseidon plans to operate its own regional air cargo network instead of selling aircraft. The company aims to compete for logistics demand from major cargo operators and businesses. Discover more Join Trade Groups Try CAD Software Preparing for first flight. Poseidon previously developed and tested a smaller-scale version of its aircraft called Seagull before moving toward a full-size vehicle. The company has expanded operations into a former Navy hangar in Alameda, California, as it prepares for production and flight testing. Consult Corporate Lawyers The company previously announced its $11 million funding round to support the development of unmanned cargo aircraft technology. Poseidon has also shared details about its aircraft development through a video presentation showing its approach to autonomous cargo aviation. A changing aviation landscape. Poseidon is entering an aviation market where regulators have become more open to testing new aircraft technologies. The Federal Aviation Administration has introduced programs supporting emerging aviation companies, creating more opportunities for startups developing new aircraft systems. The company believes autonomous cargo aircraft could create a more flexible logistics network by allowing routes to change more easily based on demand without the limitations of traditional pilot-based operations.

Poseidon Aerospace
Nov 6th, 2025
Poseidon Aerospace

Poseidon is reimagining logistics with autonomous aircraft built to move goods faster,cheaper, anywhere they're needed. We are building the unmanned backbone of tomorrow's logistics.