
Helios
High-energy orbital transfer stage designed to transport payloads beyond low Earth orbit.
- Unveiled
- Jan 2024


Startup · United States
HQ Redondo BeachFounded 2021201-500 employees
In-space transportation vehicles for commercial, civil and government payloads.
| Announced | Stage | Valuation | Basis |
|---|---|---|---|
| Jun 2, 2026 | Series D | $4.26B | Basis not stated |
| Sep 16, 2026 | Series D | $5.40B | Basis not stated |
| Announced | Stage | Amount | Valuation | Lead investors | Other investors | Confidence |
|---|---|---|---|---|---|---|
| Sep 16, 2026 | Series D | $308M | $5.40B? | — | 137 Ventures, Banner VC, DFJ Growth, Linse Capital, Lux Capital, Valor Equity Partners | Reported |
| Jun 2, 2026 | Series D | $500M | $4.26B? | 137 Ventures, Banner VC | Founders Fund, Linse Capital, Lux Capital | Confirmed |
| Jun 2, 2025 | Series C | $300M | — | Linse Capital | Airbus Ventures, Balerion Space, DCVC, DFJ Growth, Founders Fund, Lux Capital, RTX Ventures, Tamarack Global, Trousdale Ventures, Valor Equity Partners | Confirmed |
| Sep 30, 2024 | Series B | $150M | — | Founders Fund | 137 Ventures, Airbus Ventures, Alumni Ventures, Balerion Space, DCVC, Lux Capital, Overmatch, RTX Ventures, Tamarack Global, Trousdale Ventures | Confirmed |
| Jul 24, 2023 | Series A | $45.0M | — | RTX Ventures | Airbus Ventures, Founders Fund, Lux Capital, Space Capital | Confirmed |
| Jun 16, 2022 | Seed | $10.0M | — | Lux Capital | — | Confirmed |
| Mar 29, 2022 | Seed | $20.0M | — | Founders Fund | — | Confirmed |
Raised counts equity rounds; debt, secondary sales and grants are totaled separately. Amounts in other currencies are converted at the announcement month's average rate. A ~ marks an estimated or converted amount.
| Program | Role | Program status | Confidence |
|---|---|---|---|
| National Security Space Launch Phase 3 Lane 1 | Competing bidder | Competition | Reported |

High-energy orbital transfer stage designed to transport payloads beyond low Earth orbit.

Newest unveiled first. Open a system for its milestone timeline, components and sources.
Founder
President / COO
Automation & Controls Technician ↗
Redondo Beach, CA · Full-time · Other
Availability unverified · Bright Data / LinkedIn
Checked Oct 5, 2026
Redondo Beach, CA · Full-time · Other
Availability unverified · Bright Data / LinkedIn
Checked Oct 5, 2026
Redondo Beach, CA · Full-time · Engineering
Availability unverified · Bright Data / LinkedIn
Checked Oct 5, 2026
Learning & Development Manager ↗
Redondo Beach, CA · Full-time · Other
Availability unverified · Bright Data / LinkedIn
Checked Oct 5, 2026
Sourcing Specialist (All Levels) ↗
Redondo Beach, CA · Full-time · Other
Availability unverified · Bright Data / LinkedIn
Checked Oct 5, 2026
A sample of observed listings, not a total vacancy count. Availability may have changed since collection. Categories are inferred from job titles.
Employee-profile counts reflect LinkedIn profiles associated with the company, not verified headcount. One observation establishes a baseline; it does not establish growth.
Impulse Space · Supports Organization, Organization · name, System
“Our vehicles move payloads across and between orbits”
Impulse Space · Supports System
“Deneb Engine Chemical propulsion engine, designed by Tom Mueller”
Impulse Space · Supports System
“Saiph Engine Non-toxic, bipropellant thruster, designed by Tom Mueller”
Supports System
“a high-energy upper stage that transports payloads from Low Earth Orbit (LEO) to high-energy orbits”
Reuters · Sep 16, 2026 · Supports Funding round · amount, Funding round · post money valuation usd, Organization · ownership
“Impulse Space has raised $308 million in an extension of the Series D funding round”
Impulse Space · Jun 2, 2026 · Supports Funding round, Funding round · amount
“today announced it has raised $500 million in Series D funding.”
U.S. Securities and Exchange Commission · Jun 2, 2026 · Supports Funding round · amount
“Total Amount Sold $499,832,346 USD”
U.S. Securities and Exchange Commission · Jun 11, 2025 · Supports Funding round · amount
“Total Amount Sold $294,526,573 USD”
Impulse Space · Jun 2, 2025 · Supports Funding round, Funding round · amount
“The round, led by Linse Capital, brings Impulse’s total capital raised to $525 million.”
Impulse Space · Sep 30, 2024 · Supports Funding round · amount
“today announced a $150 million Series B funding round, led by Founders Fund.”
U.S. Securities and Exchange Commission · Aug 3, 2023 · Supports Funding round · amount
“Total Amount Sold $38,749,892 USD”
Impulse Space · Jul 24, 2023 · Supports Funding round · amount
“Redondo Beach, Calif. (July 24, 2023)— Impulse Space, Inc. – a leader in the development of in-space transportation services for the inner solar system – today announced it has secured $45 million in its Series A funding round.”
Business Wire (via StreetInsider) · Jul 24, 2023 · Supports Funding round, Funding round · amount
“The Series A funding round also included other participant investors, such as Founders Fund, Lux Capital, Airbus Ventures and Space Capital.”
Impulse Space · Jun 16, 2022 · Supports Funding round · amount
“today announced it has secured $10 million in funding by Lux Capital”
U.S. Securities and Exchange Commission · Apr 4, 2022 · Supports Funding round · amount
“Total Amount Sold $19,999,997 USD”
Impulse Space · Mar 29, 2022 · Supports Funding round · amount
“today announced it has secured $20 million in a seed round led by Founders Fund”
Impulse Space · Supports Funding round · amount
“Impulse Space, the in-space mobility leader, today announced a $308 million extension to its Series D round, bringing the combined round total to $808 million.”
Crunchbase · Supports Organization · x url, Role, Role · founders
“x_url: https://x.com/GoToImpulse”
LinkedIn via Bright Data · Supports Organization · company size, Organization · founded, Organization · headquarters, Organization · logo, Organization · url, Organization metric · employees in linkedin, Organization metric · followers
“{"company_size": "201-500 employees"}”
LinkedIn via Bright Data · Supports Job posting · job listing
“{"company_id": "75578325", "company_name": "Impulse Space", "company_url": "https://www.linkedin.com/company/impulse-space?trk=public_jobs_topcard-org-name", "job_employment_type": "Full-time", "job_location": "Redondo Beach, CA", "job_posted_time": "3 months ago", "job_posting_id": "4437419526", "job_seniority_level": "Mid-Senior level", "job_summary": "Department: Software Location: Redondo Beach Compensation: $125,000 - $170,000 / year Description As an FPGA engineer at Impulse Space, you will be responsible for taking complex protocols and algorithms and accelerating them into high throughput FPGA blocks. Working closely with RF software engineers you will write libraries to help bridge the gap between fabric acceleration and high-level applications. Your code will not only fly in space but become the backbone for ground systems that will push millions of mission packets per second. Responsibilities Design and implement all layers of satellite communication modems from DSP blocks to network protocols. Analyze timing and resource requirements for existing and next generation RF products. Create end-to-end test harnesses with integrations into CI/CD pipelines. Work closely with RF software engineers as you design high performance libraries to bridge the gap between FPGA and SOC. Minimum Qualifications Bachelor’s degree in computer science, electrical engineering, math or other engineering discipline. 2+ years of professional FPGA development experience. Experience using Verilog, SystemVerilog, or VHDL. Experience developing for Xilinx FPGA/SOC products. Preferred Skills And Experience Experience with Xilinx Vivado and Petalinux tooling. Demonstrated experience of DSP fundamentals such as filters, and PLLs. Exposure to fundamentals of satellite communications, encoders, PSK, symbol synchronization. Experience developing software for embedded systems in C++ or C. Experience with FPGA block stimulation and test benching. Familiarity with satellite communication standards (DVB-S2X, CCSDS). Additional Information Compensation bands are determined by role, level, location, and alignment with market data. Individual level and base pay is determined on a case-by-case basis and may vary based on job-related skills, education, experience, technical capabilities and internal equity. In addition to base salary, for full-time hires, you may also be eligible for long-term incentives, in the form of stock options , and access to medical, vision & dental coverage as well as access to a 401(k) retirement plan . Impulse Space’s spacecraft manufacturing business is subject to U.S. export regulations including the International Traffic in Arms Regulations (ITAR) and Export Administration Regulations (EAR). This position requires applicants to be either U.S. Persons (i.e., U.S. citizen, U.S. national, lawful permanent U.S. resident (green card holder), an individual granted asylum in the U.S., or an individual admitted in U.S. refugee status) or persons eligible to obtain an export license from the U.S. Departments of State, Commerce, or other applicable U.S. government agencies. Learn more about the ITAR here. Impulse Space is an Equal Opportunity Employer; employment with Impulse Space is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status. Show more Show less", "job_title": "FPGA Engineer", "timestamp": "2026-10-05T05:41:57.082Z"}”
LinkedIn via Bright Data · Supports Job posting · job listing
“{"company_id": "75578325", "company_name": "Impulse Space", "company_url": "https://www.linkedin.com/company/impulse-space?trk=public_jobs_topcard-org-name", "job_employment_type": "Full-time", "job_location": "Redondo Beach, CA", "job_posted_time": "2 weeks ago", "job_posting_id": "4462584138", "job_seniority_level": "Mid-Senior level", "job_summary": "Department: Manufacturing Location: Redondo Beach Compensation: $130,000 - $160,000 / year Description As the Learning & Development Manager at Impulse, you will establish the systems, programs, and processes that support employee development, training, and compliance across the company. This role will own the company’s LMS, build training programs, partner with technical and business leaders, manage external training providers, and establish the reporting and processes needed to scale L&D in a fast-paced aerospace environment. Primarily office-based at our Redondo Beach facility. Occasional travel may be required. Responsibilities Own and optimize the company’s LMS, including course assignment, enrollment, completion tracking, and reporting Partner with Engineering, Manufacturing, Mission Management, EHS, Security, Quality, Legal, and People teams to identify training needs and develop company-wide and role-specific programs Develop and maintain onboarding, compliance, safety, technical, and professional-development training Manage third-party training vendors, including selection, scheduling, delivery, and budget Establish training policies, compliance tracking, reporting, and metrics while continuously improving programs as the company scales Minimum Qualifications 5+ years of experience in Learning & Development, Training, or a related HR function Demonstrated experience selecting, implementing, or administering an LMS Demonstrated experience building training programs or L&D capabilities from the ground up Strong project management and stakeholder-management skills Demonstrated experience with training compliance, reporting, and/or audit readiness Excellent communication skills and proficiency with Microsoft 365 and HRIS/LMS platforms High school diploma, or GED certificate equivalent Preferred Skills And Experience 5+ years of demonstrated experience in aerospace, defense, manufacturing, or another regulated industry Familiarity with ITAR/export controls, cybersecurity, safety, ethics, or other government-contractor training requirements Instructional design experience or an L&D certification (e.g., ATD/CPTD) Experience scaling L&D programs in a high-growth startup Bachelors degree in engineering, or related field Additional Information: Compensation bands are determined by role, level, location, and alignment with market data. Individual level and base pay is determined on a case-by-case basis and may vary based on job-related skills, education, experience, technical capabilities and internal equity. In addition to base salary, for full-time hires, you may also be eligible for long-term incentives, in the form of stock options , and access to medical, vision & dental coverage as well as access to a 401(k) retirement plan . Impulse Space’s spacecraft manufacturing business is subject to U.S. export regulations including the International Traffic in Arms Regulations (ITAR) and Export Administration Regulations (EAR). This position requires applicants to be either U.S. Persons (i.e., U.S. citizen, U.S. national, lawful permanent U.S. resident (green card holder), an individual granted asylum in the U.S., or an individual admitted in U.S. refugee status) or persons eligible to obtain an export license from the U.S. Departments of State, Commerce, or other applicable U.S. government agencies. Learn more about the ITAR here. Impulse Space is an Equal Opportunity Employer; employment with Impulse Space is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status. Show more Show less", "job_title": "Learning & Development Manager", "timestamp": "2026-10-05T05:41:57.223Z"}”
LinkedIn via Bright Data · Supports Job posting · job listing
“{"company_id": "75578325", "company_name": "Impulse Space", "company_url": "https://www.linkedin.com/company/impulse-space?trk=public_jobs_topcard-org-name", "job_employment_type": "Full-time", "job_location": "Redondo Beach, CA", "job_posted_time": "1 week ago", "job_posting_id": "4466333541", "job_seniority_level": "Mid-Senior level", "job_summary": "Department: Legal Location: Redondo Beach Compensation: $175,000 - $215,000 / year Description As part of Impulse’s legal team, the Contracts Counsel will support a fast-growing and dynamic company across a broad range of contracts, including customer-facing commercial agreements, launch-related agreements, vendor and supplier agreements, leases and other business arrangements. This role reports to the Assistant General Counsel and is intended to add experienced execution capacity to the legal team: independently handling day-to-day drafting, review and negotiation of assigned matters after alignment on strategy, while coordinating on material deviations, non-standard risk positions, novel issues and complex or high-stakes matters. The Contracts Counsel will work directly with internal stakeholders on assigned matters and may support additional practice areas as the company grows. NOTE: This position is on-site in Redondo Beach Responsibilities Support the team in drafting, reviewing and negotiating a wide range of agreements, including customer-facing launch and mission services agreements, other commercial customer agreements, launch provider agreements, vendor and supplier agreements, leases, confidentiality agreements and other business arrangements Prepare initial drafts, reviews and redlines for assigned matters; identify key legal and business issues; and propose practical paths forward as appropriate Handle routine negotiations within established legal positions and agreed deal strategy, with appropriate escalation of material deviations, non-standard risk positions, novel issues, and complex or high-stakes matters Support customer contract work in coordination with the Assistant General Counsel, including working with Business Development, Finance, Mission Management and other stakeholders on deal structuring, negotiation preparation, contract execution and follow-up matters Support internal stakeholders on contract interpretation and performance issues, including amendments, change requests, claims, disputes, renewals and terminations Help create, maintain and improve contract templates, standard positions and playbooks, subject to alignment with legal leadership, and assist with key contract lifecycle tracking for assigned matters Contribute to scalable legal processes, training and other projects, and assist the legal team with additional practice areas as needed Minimum Qualifications J.D. from an accredited law school and active U.S. bar membership 6+ years of contracts experience in a law firm and/or in-house legal department, including meaningful experience drafting and negotiating commercial agreements Demonstrated ability to independently handle routine drafting and negotiations within established parameters, together with strong judgment about when to escalate legal or business risk Sound business judgment and the ability to identify and articulate legal and commercial risk clearly and propose practical, risk-based solutions Strong communicator with a highly collaborative working style and comfort working directly with internal stakeholders and external counterparties in a fast-paced, high-growth environment. Preferred Skills And Experience In-house experience in a fast-paced startup or growth-stage environment, preferably in aerospace, defense, technology or engineering-driven company\\ Demonstrated experience supporting customer-facing services agreements, launch or satellite contracting, or other complex commercial transactions Demonstrated experience helping develop or improve contract templates, playbooks, tracking and other contract operations processes Additional Information: Compensation bands are determined by role, level, location, and alignment with market data. Individual level and base pay is determined on a case-by-case basis and may vary based on job-related skills, education, experience, technical capabilities and internal equity. In addition to base salary, for full-time hires, you may also be eligible for long-term incentives, in the form of stock options , and access to medical, vision & dental coverage as well as access to a 401(k) retirement plan . Impulse Space’s spacecraft manufacturing business is subject to U.S. export regulations including the International Traffic in Arms Regulations (ITAR) and Export Administration Regulations (EAR). This position requires applicants to be either U.S. Persons (i.e., U.S. citizen, U.S. national, lawful permanent U.S. resident (green card holder), an individual granted asylum in the U.S., or an individual admitted in U.S. refugee status) or persons eligible to obtain an export license from the U.S. Departments of State, Commerce, or other applicable U.S. government agencies. Learn more about the ITAR here. Impulse Space is an Equal Opportunity Employer; employment with Impulse Space is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status. Show more Show less", "job_title": "Contracts Counsel", "timestamp": "2026-10-05T05:42:00.280Z"}”
LinkedIn via Bright Data · Supports Job posting · job listing
“{"company_id": "75578325", "company_name": "Impulse Space", "company_url": "https://www.linkedin.com/company/impulse-space?trk=public_jobs_topcard-org-name", "job_employment_type": "Full-time", "job_location": "Redondo Beach, CA", "job_posted_time": "6 days ago", "job_posting_id": "4468846072", "job_seniority_level": "Mid-Senior level", "job_summary": "Department: Supply Chain Location: Redondo Beach Compensation: $115,000 - $155,000 / year Description As a Sourcing Specialist at Impulse Space, you will manage sourcing and supplier execution for assigned hardware, materials, and services critical to spacecraft development and production. You will work closely with engineering, quality, planning, manufacturing, and program teams to deliver sourcing solutions that balance cost, quality, delivery, and technical risk. This role is responsible for managing assigned suppliers, executing complex competitive sourcing activities, negotiating commercial terms, resolving supply-chain problems, and improving supplier performance. You will also identify alternate sources, support supply-risk mitigation, and provide guidance to junior members of the sourcing team. Additional Note: Leveling will be commensurate with experience. Responsibilities Own sourcing, procurement, and supplier execution for assigned parts, suppliers, commodities, or projects from initial requirements through delivery Serve as the primary commercial point of contact for assigned suppliers and manage performance, capacity, cost, and contractual matters Lead RFQs and supplier evaluations by assessing cost, lead time, technical capability, capacity, quality, and compliance Negotiate pricing, lead times, payment terms, minimum-order quantities, tooling arrangements, and other commercial terms within established sourcing strategies Partner with engineering, manufacturing, planning, and program teams to source development and production hardware in support of program schedules Collaborate with Supply Chain Engineering to evaluate and qualify suppliers against technical, quality, regulatory, and business requirements Monitor supplier performance and lead recovery efforts when cost, quality, delivery, or responsiveness falls below expectations Drive cost-reduction and value-improvement opportunities through competitive sourcing, cost analysis, demand consolidation, and supplier negotiations Maintain accurate purchasing and supplier data, resolve delivery and invoice issues, support sourcing-process improvements, and provide guidance to junior sourcing and purchasing team members Travel to supplier locations as needed to support qualification, negotiations, production readiness, and performance recovery Minimum Qualifications Bachelor’s degree in Supply Chain, Business, Engineering, Operations, Finance, or a related field 3+ years of experience in sourcing, procurement, supply chain, supplier management, or a related function Demonstrated experience independently managing suppliers, purchase orders, RFQs, and procurement activities Demonstrated experience evaluating supplier proposals and negotiating pricing, lead times, and other commercial terms Demonstrated experience working with ERP, MRP, procurement, or inventory-management systems Strong analytical and communication skills with the ability to interpret sourcing data and work effectively across engineering, quality, manufacturing, planning, finance, and program teams Preferred Skills And Experience 5+ years of experience in sourcing, procurement, supply chain, or supplier management Demonstrated experience supporting aerospace, defense, automotive, or another high-reliability manufacturing environment Demonstrated experience sourcing machined components, raw materials, PCB/PCBA, composites, propulsion hardware, electrical components, or commercial off-the-shelf hardware Working knowledge of manufacturing processes, technical drawings, bills of material, and engineering change control Demonstrated experience with supplier qualification, audits, corrective actions, alternate sourcing, or supplier-performance improvement Demonstrated experience using cost models, should-cost analysis, or total-cost-of-ownership analysis Familiarity with AS9100, ITAR, EAR, and applicable aerospace quality and regulatory requirements Advanced proficiency in Excel; experience with SQL, Power BI, or other analytical tools is a plus Ability to travel up to 15% Additional Information Compensation bands are determined by role, level, location, and alignment with market data. Individual level and base pay is determined on a case-by-case basis and may vary based on job-related skills, education, experience, technical capabilities and internal equity. In addition to base salary, for full-time hires, you may also be eligible for long-term incentives, in the form of stock options , and access to medical, vision & dental coverage as well as access to a 401(k) retirement plan . Impulse Space’s spacecraft manufacturing business is subject to U.S. export regulations including the International Traffic in Arms Regulations (ITAR) and Export Administration Regulations (EAR). This position requires applicants to be either U.S. Persons (i.e., U.S. citizen, U.S. national, lawful permanent U.S. resident (green card holder), an individual granted asylum in the U.S., or an individual admitted in U.S. refugee status) or persons eligible to obtain an export license from the U.S. Departments of State, Commerce, or other applicable U.S. government agencies. Learn more about the ITAR here. Impulse Space is an Equal Opportunity Employer; employment with Impulse Space is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status. Show more Show less", "job_title": "Sourcing Specialist (All Levels)", "timestamp": "2026-10-05T05:42:00.279Z"}”
LinkedIn via Bright Data · Supports Job posting · job listing
“{"company_id": "75578325", "company_name": "Impulse Space", "company_url": "https://www.linkedin.com/company/impulse-space?trk=public_jobs_topcard-org-name", "job_employment_type": "Full-time", "job_location": "Redondo Beach, CA", "job_posted_time": "2 days ago", "job_posting_id": "4475071283", "job_seniority_level": "Mid-Senior level", "job_summary": "Department: Assembly, Integration & Test Location: Redondo Beach Compensation: $35.00 - $45.00 / hour Description As an Automation & Controls Technician at Impulse , you will support the installation, modification, and maintenance of industrial machinery, production equipment, and test systems. This role is hands-on and focused on electrical wiring, controls hardware, and electrical troubleshooting, working closely with engineers and specialists. Responsibilities Install and modify industrial controls hardware in accordance with NFPA 70 and NFPA 7 Wire and rework control panels following UL 508A practices and company standards Assist with maintaining the electrical shop, tools, consumables, and controls hardware inventory Configure and set up industrial controls hardware Support troubleshooting of electrical and controls-related issues on machines and test equipment Review electrical drawings and mark up redlines as needed Provide practical build and wiring feedback to engineering teams Use EPlan to view schematics, generate reports, and support manufacturing documentation Document work performed and update assigned tasks or work orders Minimum Qualifications High school diploma or equivalent 3+ years of work in a relevant field (manufacturing/test/R&D) 3+ years working on electrical control systems 1+ years working on pneumatic and/or hydraulic systems Demonstrated high attention to detail Preferred Skills And Experience Familiarity with EPlan/EView Experience working on systems up to 480 VAC Electrical troubleshooting experience in an industrial environment and/or test environment Additional Information Compensation bands are determined by role, level, location, and alignment with market data. Individual level and base pay is determined on a case-by-case basis and may vary based on job-related skills, education, experience, technical capabilities and internal equity. In addition to base salary, for full-time hires, you may also be eligible for long-term incentives, in the form of stock options , and access to medical, vision & dental coverage as well as access to a 401(k) retirement plan . Impulse Space’s spacecraft manufacturing business is subject to U.S. export regulations including the International Traffic in Arms Regulations (ITAR) and Export Administration Regulations (EAR). This position requires applicants to be either U.S. Persons (i.e., U.S. citizen, U.S. national, lawful permanent U.S. resident (green card holder), an individual granted asylum in the U.S., or an individual admitted in U.S. refugee status) or persons eligible to obtain an export license from the U.S. Departments of State, Commerce, or other applicable U.S. government agencies. Learn more about the ITAR here. Impulse Space is an Equal Opportunity Employer; employment with Impulse Space is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status. Show more Show less", "job_title": "Automation & Controls Technician", "timestamp": "2026-10-05T05:41:59.546Z"}”
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