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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

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  • a16z
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  • Founders Fund
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  • 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
Cowboy Space logo
Senior In-Space Propulsion Engineer
1/20Posted 2 weeks ago

Cowboy Space · Seattle, King County, Washington

$140,000 - $205,000
Onsite
20 results on this page
Jobs per page
PreviousPage 8Next
Series B
$100M-$1B
Andreessen Horowitz (a16z)
Index Ventures
+1 more
Aerodynamics
Posted 2 weeks agoSee job

Cowboy Space Corp. seeks a Senior In-Space Propulsion Engineer to own delivery of on-orbit propulsion systems, from early trades to test and integration. The role involves leading design, development, and validation of electric/chemical propulsion for satellites, based onsite in Seattle, WA.

Cowboy Space logo
Controls Engineer
2/20Posted 2 weeks ago

Cowboy Space · Seattle, King County, Washington

$160,000 - $200,000
Onsite
Series B
$100M-$1B
Andreessen Horowitz (a16z)
Index Ventures
+1 more
C/C++
Controller Area Network
Hardware-in-the-Loop Testing
Kalman Filtering
+5 more
Posted 2 weeks agoSee job

Cowboy Space Corp. is hiring a Controls Engineer to design motor controls, automation sequences, and embedded control systems for fluid systems in launch vehicles. The role involves developing closed-loop control, firmware, and HIL testing, with a focus on propulsion and thermal management.

Cowboy Space logo
Senior Manager Primary Structures
3/20Posted 2 weeks ago

Cowboy Space · Seattle, King County, Washington

$150,000 - $225,000
Onsite
Series B
$100M-$1B
Andreessen Horowitz (a16z)
Index Ventures
+1 more
Composites
Finite Element Analysis
Structural Analysis
Welding
Posted 2 weeks agoSee job

Cowboy Space Corp. seeks a Senior Manager of Primary Structures to own the design, build, and performance of launch vehicle primary structures including airframe, tanks, and thrust structure. This role requires 8+ years of structural engineering experience and leadership skills, offering $150k-$225k in Seattle, WA.

Cowboy Space logo
Sr. Controls Engineer
4/20Posted 2 weeks ago

Cowboy Space · Seattle, King County, Washington

$165,000 - $190,000
Onsite
Series B
$100M-$1B
Andreessen Horowitz (a16z)
Index Ventures
+1 more
C/C++
Controller Area Network
Kalman Filtering
LabVIEW
+7 more
Posted 2 weeks agoSee job

Senior Controls Engineer at Cowboy Space Corp. to design and develop motor controls, automation sequences, and embedded control systems for fluid systems in launch and propulsion. Requires 3+ years of controls experience and embedded C/C++. On-site in Seattle, WA.

Cowboy Space logo
Senior Loads and Dynamics Engineer
5/20Posted 2 weeks ago

Cowboy Space · Seattle, King County, Washington

$160,000 - $220,000
Onsite
Series B
$100M-$1B
Andreessen Horowitz (a16z)
Index Ventures
+1 more
Flutter
Guidance, Navigation & Control
MATLAB
Propulsion Systems
+1 more
Posted 2 weeks agoSee job

Own the load cases and dynamic models for a launch vehicle, serving as technical authority for loads and dynamics across ascent, separation, entry, landing, and reuse. Establish methods, execute coupled loads analysis, and mentor engineers. Requires 8+ years of experience in structural dynamics.

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Cowboy Space logo
Principal Power Engineer
6/20Posted 2 weeks ago

Cowboy Space · San Carlos, San Mateo County, California

$155,000 - $245,000
Onsite
Series B
$100M-$1B
Andreessen Horowitz (a16z)
Index Ventures
+1 more
GPU Clusters
PCB Design & Layout
Posted 2 weeks agoSee job

Cowboy Space Corp. is seeking a Principal Power Engineer to lead the design and development of high-voltage, high-power DC/DC conversion systems for terrestrial and space-based data center infrastructure. The role focuses on architecting power delivery solutions for GPU clusters, with responsibilities spanning converter topologies, magnetic components, PCB design, and system integration.

Cowboy Space logo
Sr. Battery Engineer
7/20Posted 2 weeks ago

Cowboy Space · San Carlos, San Mateo County, California

$167,000 - $230,000
Onsite
Series B
$100M-$1B
Andreessen Horowitz (a16z)
Index Ventures
+1 more
Avionics
DFM/DFA (Design for Manufacturability & Assembly)
Failure Mode and Effects Analysis (FMEA)
Kalman Filtering
+4 more
Posted 2 weeks agoSee job

Cowboy Space Corp. seeks a Senior Battery Engineer to own the design, development, integration, and qualification of spacecraft battery systems. This hands-on role involves developing reliable energy storage solutions for space missions, working across power electronics, thermal, and mechanical teams.

Cowboy Space logo
Launch Vehicle Engineering
8/20Posted 2 weeks ago

Cowboy Space · Seattle, King County, Washington

Onsite
Series B
$100M-$1B
Andreessen Horowitz (a16z)
Index Ventures
+1 more
Posted 2 weeks agoSee job

Cowboy Space Corp is hiring launch vehicle engineers across multiple disciplines including systems engineering, structures, avionics, propulsion, and integration. The role involves designing, building, testing, or operating launch vehicle systems and flight hardware. Requires strong aerospace fundamentals and hands-on experience with flight hardware.

Cowboy Space logo
Optical Engineer, Lasers and Photonics
9/20Posted 2 weeks ago

Cowboy Space · San Carlos, San Mateo County, California

$120,000 - $200,000
Onsite
Series B
$100M-$1B
Andreessen Horowitz (a16z)
Index Ventures
+1 more
Posted 2 weeks agoSee job

Design and build high-power fiber laser and amplifier systems for space-based satellite communications. Role involves hands-on fiber-optic component integration, characterization, and testing for optical communications links.

Cowboy Space logo
Senior IT Engineer
10/20Posted 2 weeks ago

Cowboy Space · Seattle, King County, Washington

$135,000 - $175,000
Onsite
Series B
$100M-$1B
Andreessen Horowitz (a16z)
Index Ventures
+1 more
Amazon EC2
Amazon Web Services (AWS)
AWS Lambda
Bash
+26 more
Posted 2 weeks agoSee job

Cowboy Space Corp. is seeking a Senior IT Engineer to architect, manage, and secure the company's IT infrastructure, including devices, identity, networks, and cloud, in a regulated ITAR/EAR environment. This hands-on role involves owning zero-trust compliance, automation, and cloud infrastructure, and serving as the senior escalation point.

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Cowboy Space logo
Sr. Mechanisms Engineer
11/20Posted 2 weeks ago

Cowboy Space · San Carlos, San Mateo County, California

$152,000 - $220,000
Onsite
Series B
$100M-$1B
Andreessen Horowitz (a16z)
Index Ventures
+1 more
Closed-Loop Control
GD&T
SolidWorks
Posted 2 weeks agoSee job

Cowboy Space Corp. seeks a Senior Mechanisms Engineer to own gimbal mechanism development for laser communications payloads. The role spans design, analysis, procurement, integration, and qualification of flight mechanisms. Requires 5+ years of experience in aerospace or defense programs.

Cowboy Space logo
Flight Termination System Engineer
12/20Posted 2 weeks ago

Cowboy Space · Seattle, King County, Washington

$157,000 - $206,000
Onsite
Series B
$100M-$1B
Andreessen Horowitz (a16z)
Index Ventures
+1 more
Guidance, Navigation & Control
MATLAB
Python
Posted 2 weeks agoSee job

Own the Autonomous Flight Termination System (AFTS) end to end for Cowboy Space Corp., including range and FAA relationships, flight safety analysis, safety-critical avionics architecture, and certification. Set technical direction for the flight safety discipline and lead the qualification campaign.

Cowboy Space logo
Fluids Engineer
13/20Posted 2 weeks ago

Cowboy Space · Seattle, King County, Washington

Onsite
Series B
$100M-$1B
Andreessen Horowitz (a16z)
Index Ventures
+1 more
Additive Manufacturing
CATIA
Finite Element Analysis
SolidWorks
+1 more
Posted 2 weeks agoSee job

Cowboy Space Corp. is seeking a Fluids Engineer to own the design and development of fluid system hardware for propulsion, fluids, and thermal management architectures, including valves, tanks, tubing, and integrated subsystems, from concept through flight.

Cowboy Space logo
Head of Materials & Process
14/20Posted 2 weeks ago

Cowboy Space · Seattle, King County, Washington

Onsite
Series B
$100M-$1B
Andreessen Horowitz (a16z)
Index Ventures
+1 more
Additive Manufacturing
Laser Bed Powder Fusion
Mechanical Testing
Posted 2 weeks agoSee job

Cowboy Space Corp. seeks a Head of Materials & Process to own material development, qualification, and metallurgical performance across all vehicle systems. The role leads a team of M&P engineers, drives additive manufacturing and joining processes, and requires 5+ years of experience with nickel-based superalloys.

Cowboy Space logo
Staff Engineer, Optics and RF
15/20Posted 2 weeks ago

Cowboy Space · San Carlos, San Mateo County, California

$219,000 - $276,000
Onsite
Series B
$100M-$1B
Andreessen Horowitz (a16z)
Index Ventures
+1 more
Altium Designer
Impedance Matching
PCB Design & Layout
RF Simulation
+2 more
Posted 2 weeks agoSee job

Cowboy Space Corp. is hiring a Staff Engineer for Optics and RF to design and validate RF hardware for high-speed optical communication links in satellites. The role involves board-level RF design, PCB layout, and integration with optical systems.

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Narrow your alert

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

Cowboy Space logo
GPU System Reliability Engineer Lead
16/20Posted 2 weeks ago

Cowboy Space · San Carlos, San Mateo County, California

$150,000 - $225,000
Onsite
Series B
$100M-$1B
Andreessen Horowitz (a16z)
Index Ventures
+1 more
Baseboard Management Controller
GPU Computing
NVLink
PCIe
+1 more
Posted 2 weeks agoSee job

Cowboy Space Corp. is seeking a GPU System Reliability Engineer Lead to own the end-to-end RAS validation strategy for GPU server systems in Low Earth Orbit. This role involves fault injection, detection coverage, and recovery verification, working with silicon partners to ensure autonomous fault resilience.

Cowboy Space logo
Principal Turbo Hydrodynamicist
17/20Posted 2 weeks ago

Cowboy Space · Seattle, King County, Washington

Onsite
Series B
$100M-$1B
Andreessen Horowitz (a16z)
Index Ventures
+1 more
Turbomachinery
Posted 2 weeks agoSee job

Principal Turbo Hydrodynamicist responsible for owning the hydrodynamic design of rocket engine turbopumps, including flowpath design, analysis, testing, and hardware implementation. Requires 12+ years of turbomachinery experience, with a focus on cryogenic propulsion systems.

Cowboy Space logo
Export Control Director
18/20Posted 2 weeks ago

Cowboy Space · San Carlos, San Mateo County, California

Onsite
Series B
$100M-$1B
Andreessen Horowitz (a16z)
Index Ventures
+1 more
Posted 2 weeks agoSee job

Cowboy Space Corp is seeking an Export Control Director to build and scale the company's export compliance program from the ground up, owning ITAR/EAR compliance and partnering with engineering and operations. This is the first dedicated export compliance hire, reporting to the COO/CLO.

Cowboy Space logo
Flight Software Engineer
19/20Posted 2 weeks ago

Cowboy Space · Seattle, King County, Washington

$200,000 - $250,000
Onsite
Series B
$100M-$1B
Andreessen Horowitz (a16z)
Index Ventures
+1 more
Avionics
C Programming Language
C++
Guidance, Navigation & Control
+4 more
Posted 2 weeks agoSee job

Senior Flight Software Engineer responsible for owning payload flight software in Rust, including architecture, state machines, and telemetry. Lead technical owner driving the software toward on-orbit demonstration.

Cowboy Space logo
Senior Power Design Engineer – GPU Server Boards
20/20Posted 2 weeks ago

Cowboy Space · San Carlos, San Mateo County, California

$150,000 - $200,000
Onsite
Series B
$100M-$1B
Andreessen Horowitz (a16z)
Index Ventures
+1 more
CAD
Oscilloscope
PCB Design & Layout
Schematic Capture
+1 more
Posted 2 weeks agoSee job

Cowboy Space Corp. is seeking a Senior Power Design Engineer to lead board-level DC-DC power conversion and input protection for GPU servers in a space infrastructure context. The role involves designing, validating, and troubleshooting power systems for orbital deployment, collaborating with cross-functional teams, and owning critical hardware.

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.