# Senior Harness Design Engineer

**Company**: Astranis
**Location**: San Francisco
**Experience**: senior
**Job type**: full-time
**Salary**: $135,000-$235,000 USD
**Category**: Engineering
**Industry**: Technology
**Wikidata**: https://www.wikidata.org/wiki/Q96372482

**Apply**: https://job-boards.greenhouse.io/astranis/jobs/4249662006?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/jobs/job_31cc06dc-e7e

## Description

Astranis builds advanced satellites for high orbits, expanding humanity's reach into the solar system.

As a Senior Harness Design Engineer at Astranis, you will own the design of the wire harnesses that keep our spacecraft alive on orbit, translating electrical architecture into manufacturable, flight-reliable harness designs built to survive launch and the full mission life in geostationary orbit.

### Responsibilities

- Own harness architecture and design from concept and schematic capture through drawing packages and production release

- Perform the core electrical analysis behind reliable harnesses: wire sizing, voltage-drop budgets, protection and fuse coordination, derating, and connector/component selection

- Develop and maintain schematics, harness drawings, wire lists, splice diagrams, and connector face views using the Zuken E3 suite

- Drive design-to-manufacturing through Zuken E3.HarnessBuilder, using automation to move cleanly from design intent to manufacturing outputs

- Define and dimension controlled harness lengths, branch and breakout tolerances, and service-loop allowances on 2D drawings

- Define routing intent, grounding and bonding strategy, and shielding architecture across LV, HV, and RF interconnects within tightly constrained spacecraft volumes

- Audit wire diagrams and harness topologies for accuracy against interface control documents (ICDs)

- Specify physical protection and support for harnesses, including lacing, tying, convolute, and thermal/abrasion protection appropriate to the space environment

- Build, modify, and validate prototype and test harnesses

- Support pre-launch integration and test operations on the ground, including on-vehicle harness routing, installation, and connection

- Partner across subsystems (avionics, power, propulsion, payload) and functions (production, environmental test, and vehicle test), since the harness interfaces with nearly every part of the spacecraft

- Lead root-cause analysis and implement design improvements that enhance reliability, manufacturability, and serviceability

- Collaborate with manufacturing and harness suppliers on DFM/DFI feedback, assembly documentation, and process validation

### Requirements

- Degree in electrical, mechatronics, or a related engineering field, or equivalent hands-on harness design experience

- 7+ years of harness design experience, including 2 to 3 years at the system level, owning harness architecture across a vehicle rather than designing to someone else's spec

- Zuken E3 proficiency, with strong hands-on command of E3.cable, E3.smallcable, and E3.HarnessBuilder for schematic capture and harness engineering

- Strong electrical fundamentals, including wire and cable selection (ampacity, voltage drop, insulation ratings, shielding, bundling), protection coordination, derating, and connector and terminal selection

- Standards fluency in IPC/WHMA-A-620 (Class 3) workmanship, plus NASA harness workmanship and connector selection and qualification practices

- Documentation depth, able to generate complete harness packages (schematics, wire lists, connector face views, splice diagrams) and to dimension controlled lengths, branches, and service loops

- Hands-on electrical test equipment experience, including harness and continuity testers (e.g., Cirris), digital multimeters, and oscilloscopes

- Space-environment awareness, with a working understanding of how vacuum, thermal cycling, radiation, and launch vibration and shock drive harness and insulator design decisions

- Mechanical literacy, comfortable working alongside mechanical and packaging teams on 3D routing feasibility, clamp and datum definition, and harness path

### Benefits

- Base salary: $135,000-$235,000 USD

- Significant equity package via incentive stock options

- High-quality company-subsidized healthcare, disability and life insurance

- 401(k) retirement planning

- Flexible PTO

- Free on-site catered meals

## Skills

### Required
- Zuken E3
- Electrical design
- Harness design
- Wire and cable selection
- Protection coordination
- Derating
- Connector and terminal selection
- IPC/WHMA-A-620
- NASA harness workmanship
- Electrical test equipment

### Nice to have
- Zuken E3.database librarian
- Spacecraft charging expertise
- HV design for space environment
- RF literacy
- Test and verification
- 3D CAD proficiency in CATIA Electrical, SolidWorks, or 3DEXPERIENCE

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Source: [Apply at job-boards.greenhouse.io](https://job-boards.greenhouse.io/astranis/jobs/4249662006?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)