Sierra Space Internship 2027–2028: Programs, Deadlines & How to Apply

Last updated: August 2026

Sierra Space finished all manufacturing and assembly milestones for its Dream Chaser spaceplane "Tenacity" (the world's only commercial runway-capable spaceplane) with a demonstration flight planned for late 2026. Interns hired into the program work on that vehicle and on national-security satellite programs directly. The company spun out of Sierra Nevada Corporation in 2021, closed an $8 billion Series C in March 2026, and now employs roughly 1,317 people under CEO Tom Vice. Here is everything you need to know to land a spot in the 2027–2028 cycle, starting with the eligibility gate that screens most applicants out before anything else.

Quick Facts

Sierra Space runs a real, paid, 12-week Summer Intern Academy across Colorado, Wisconsin, and North Carolina, but it sits behind a hard US-person / ITAR gate: you must be a US citizen, green-card holder, or protected individual, be able to obtain a US security clearance, and F-1 visa sponsorship is not available. Postings open around September, and the official Colorado engineering-intern rate is $30/hour.

Externships are short, remote projects where you finish real work for a real company. The Hydroficient IoT Cyber Defense Externship builds the embedded-hardware and security instincts an aerospace prime rewards, and the Wayfair AI Agent Engineering Externship gives you shipped software to point at for a spacecraft-software or systems track. Explore all Externships.

What Is a Sierra Space Internship?

A Sierra Space internship is a paid, fully onsite placement inside a real space-hardware company (not a shadowing rotation. Sierra Space, spun out of Sierra Nevada Corporation in 2021, builds the Dream Chaser spaceplane, the LIFE inflatable space habitat, and (with Blue Origin) the Orbital Reef commercial space station. It closed an $8 billion Series C in March 2026 and employs roughly 1,317 people, headquartered in Louisville, Colorado. The internship program) which aggregators call the "Summer Intern Academy": runs Spring, Summer (about 12 weeks), and Fall sessions across engineering, operations, and general-and-administrative functions, and interns are placed on live programs including Dream Chaser and national-security satellite work. That national-security exposure is exactly why the eligibility bar is unusual: every role carries a US-person / ITAR requirement and a security-clearance expectation, which matters more here than GPA or school prestige.

When Do Sierra Space Internship Applications Open for 2027–2028?

Sierra Space follows a documented annual cycle rather than a single fixed deadline. Positions are posted in September, application review and interviews run October through December, the application deadline lands in December, and interns start in January (spring) or May/June (summer and fall). Mapping that onto the next cycle: applications for summer 2027 are expected to open around September 2026, with a deadline around December 2026 and interviews across October–December 2026, and summer 2027 interns would begin work in May/June 2027. The 2026-cycle postings required an expected graduation date of December 2026–June 2027, so expect the 2027 cycle to shift that graduation window forward roughly a year (about December 2027–June 2028). All of these forward dates are expected, projected from the published annual cycle, not officially confirmed.

Why You Must Apply the Week Applications Open

Sierra Space lists a December application deadline, but treating that as your target is a mistake. Individual postings state the role stays open only "until a qualified pool of candidates is identified," which means popular tracks can close well before December once enough strong applications land. The company also reviews on a rolling basis starting in October, so an application submitted in September sits in front of a recruiter for months longer than one submitted at the deadline. Practically: the moment summer 2027 postings appear (expected around September 2026), apply to the specific function and site you want. There is one more reason to move early here that most companies do not share: the US-person / ITAR eligibility and security-clearance requirement means recruiters are working from a smaller qualified pool, and clearing that gate quickly on your application (stating citizenship or protected-individual status plainly) keeps you in the review stack instead of stalling it.

Which Sierra Space Internship Programs Should You Target?

Sierra Space runs a single structured internship program with many function-specific tracks that rotate by season. The engineering tracks below are drawn from the 2026-cycle postings and the official engineering discipline pages; the specific reqs that open each season vary, but this is the shape of what to target for 2027.

Beyond engineering, Sierra Space also posts operations tracks (Ground Support, Industrial Engineering, Inventory & Logistics, Manufacturing Engineering, Planning, Procurement, Production) and G&A tracks (Accounting, Business Management, Finance, HR, IT, Legal). The exact live posting count fluctuates by season, so check the official internship page for what is currently open.

What Are the Eligibility Requirements?

Sierra Space publishes clear eligibility requirements, and the citizenship gate is the one that decides most applications before anything else is read:

• Enrollment: Actively enrolled undergraduate from sophomore year through PhD, provided you can complete a semester after the internship. Unusually, graduate and PhD students are explicitly eligible, not just undergrads.

• Graduation window: The 2026 cycle required an expected graduation date of December 2026–June 2027; expect the 2027 cycle to shift that forward about a year (roughly December 2027–June 2028).

• GPA: A cumulative GPA of 3.0 or higher is preferred, not a stated hard cutoff.

• Citizenship / ITAR (hard gate): You must be a US citizen, lawful permanent resident, protected individual (8 U.S.C. 1324b(a)(3)), or otherwise able to obtain the required US Department of State / Commerce authorizations. The ability to obtain and maintain a US security clearance is required.

• Visa: F-1 visa sponsorship is not available for internships. International students on F-1 status are effectively not eligible.

• Preferred majors: Aerospace, Mechanical, Electrical, and Industrial Engineering; Computer Science; Information Science; and Physics.

Who Is Actually Eligible: The US-Person and Clearance Gate

This is the single most important thing to understand before you spend time on an application. Because Sierra Space works on ITAR-controlled and national-security satellite programs, the "eligible to obtain authorizations" language on the posting is standard export-control boilerplate (in practice, roles require US citizen, green-card, or protected-individual status, and F-1 international students are not sponsored. On top of that, the ability to obtain and maintain a US security clearance is required, which is tied directly to the classified nature of some of the work. If you are a US person, this is an advantage: it means you are competing in a smaller, pre-filtered pool. If you are on an F-1 visa, Sierra Space internships are not an available path, and your energy is better spent on companies without an ITAR gate. Two softer notes from the community: GPA 3.0 is a preference rather than a wall, and Reddit commenters advise being selective about which internal program you join, citing high turnover on some efforts) treat that as anecdotal.

What Skills Does Sierra Space Look For, and How Do You Build Them?

Across the Sierra Space intern JDs, the pattern is consistent: communication and collaboration show up in every posting, a core aerospace tool stack (MATLAB, CAD, and, for specific tracks, Simulink and STK) shows up next, and programming (Python) plus systems-requirements thinking round out the technical core. Four JD sources were reviewed in full: the BuiltIn "Summer 2026 Engineering Intern" posting, the official internship and engineering discipline pages, the Madison propulsion intern description, and the software intern description, and a recurring soft requirement across all of them is a "passion for solving problems by using data and technology." The takeaway for a prospective applicant: the tools are learnable and the differentiator is showed, finished project work in the relevant discipline.

How Is Demand for Aerospace Engineering Interns Moving Right Now?

Build These Skills Before You Apply

And each of those skills maps to a remote Externship where you finish a real project before Sierra Space postings even open.

How close is the overlap? The Hydroficient project puts you on embedded/IoT hardware and security, the same instincts a spacecraft-electronics or systems track probes for, and the Wayfair project yields shipped software you can defend in a technical interview: both give you finished work to name before a Sierra Space req is even live.

What Is the Sierra Space Application and Interview Process Like?

Sierra Space does not publish a formal, round-by-round intern interview structure, so the steps below combine the official application flow with community-reported interview signal (Reddit r/aerospace): treat the interview specifics as directional, not official:

1. Monitor the internship page (starting ~September). Watch sierraspace.com/careers/internship for postings the year before your summer. Reqs are function- and site-specific.

2. Confirm eligibility before you apply. Verify you meet the US-person / ITAR requirement and can obtain a security clearance: this is the hard gate, and confirming it up front keeps your application in the review stack.

3. Apply online to the specific posting. Choose your function (Aerospace, Mechanical, Propulsion, Systems, Electrical, Software, etc.) and site (CO, WI, or NC), and apply early because roles close once a qualified pool is identified.

4. Application review (October–December). Recruiters review on a rolling basis, so earlier applications get more time in front of a hiring team.

5. Recruiter / HR screen. A phone or video conversation covering eligibility (US-person / clearance), your resume, motivation, and availability.

6. Technical / team interview. A video or onsite conversation on discipline fundamentals, your coursework and projects, and tools (MATLAB / CAD / Python), plus behavioral fit. Some candidates report a second team/manager interview after this.

7. Offer and start. Offers arrive ahead of a January (spring) or May/June (summer/fall) start. Coordinate course credit with your university if desired, and arrange your own housing.

Two things to note. First, there is no evidence of a standardized online assessment (HackerRank/Codility-style) for Sierra Space internships: the process appears interview-driven. Second, community reports are thin, so the exact number of interview rounds varies; plan for at least a screen plus one technical/team interview, and possibly a second.

What Students on Reddit Say

A handful of r/aerospace threads give first-hand and employee-side signal on Sierra Space hiring. Content behind Reddit's block could not be fully scraped, so these are consensus takeaways, paraphrased.

How Do You Stand Out for a Sierra Space Internship?

Three moves, all executable now. First, clear the eligibility gate loudly: if you are a US person, state your citizenship or protected-individual status plainly on the application and note that you can obtain a security clearance, because recruiters working a smaller ITAR-eligible pool want that confirmed before they invest time. Second, bring finished, discipline-relevant project work: Sierra Space evaluates coursework and projects heavily in the technical interview, so a hardware, systems, or software project you can walk through (ideally in MATLAB, CAD, or Python) beats a resume of tool names. Third, apply the week postings open in September and target a specific function and site rather than casting wide, because roles close once a qualified pool is identified. If you want proof-of-work you can name before any req is live, a remote Externship in embedded hardware, systems, or software gives you exactly that.

What Other Companies Should You Consider?

Sierra Space competes for early-career engineers with the rest of the new-space and defense-tech landscape. If you are building an aerospace internship list, these are the obvious neighbors: several share the same US-person / ITAR gate, so check eligibility on each:

Our engineering internships summer 2027 guide maps the whole landscape, timeline by timeline.

FAQ

Can I still apply for a summer 2026 Sierra Space internship?

Effectively no. The summer 2026 cycle followed the standard timeline: postings opened around September 2025, the deadline was around December 2025, and those interns started onsite in May/June 2026, so as of August 2026 the summer 2026 cohort is already working. Your realistic target is summer 2027: watch the official internship page and expect postings to open around September 2026.

Does Sierra Space offer internships?

Yes. Sierra Space runs a structured, paid internship program (aggregators call it the "Summer Intern Academy") with Spring, Summer (about 12 weeks), and Fall sessions across engineering, operations, and general-and-administrative functions. Interns work onsite on real programs, including the Dream Chaser spaceplane and national-security satellites.

When do I apply for a summer 2027 internship?

Postings are expected to open around September 2026, with a deadline around December 2026 and interviews running October–December 2026; summer interns start May/June 2027. These dates are projected from the documented annual cycle: expected, not officially confirmed, so set alerts and apply the week roles go live.

Can international students (F-1) intern at Sierra Space?

No. Because of ITAR / export-control and national-security work, F-1 visa sponsorship is not available, and you must be a US citizen, lawful permanent resident, protected individual (8 U.S.C. 1324b(a)(3)), or otherwise able to obtain the required US government authorizations. The ability to obtain and maintain a US security clearance is also required.

What does the internship pay?

An official 2026 Colorado "Engineering Intern" posting listed $30.00/hour. Community sources vary by role and site: Glassdoor reports about $34/hr on average (roughly $26–$47 across 5 reports) and Indeed about $22/hr. Housing is not provided, though accommodation info and connection platforms are offered, and course credit is available if coordinated with your university.

What GPA and majors do I need?

A cumulative GPA of 3.0 or higher is preferred (not a stated hard cutoff). Preferred majors include Aerospace, Mechanical, Electrical, and Industrial Engineering; Computer Science; Information Science; and Physics. Graduate and PhD students are eligible, not just undergrads, as long as you can complete a semester after the internship.

Where are the internships located and are any remote?

Louisville and Centennial, CO; Madison, WI (propulsion); and Durham, NC (mechanical / manufacturing). All internships are fully onsite at 40 hours/week: no remote option is documented, so plan for relocation and arrange your own housing.

How selective is it and what is it like to work there?

Sierra Space's Glassdoor rating is low (about 2.7/5 overall, ~24% would recommend as of 2026), though that reflects the whole company, not interns specifically. Reddit reports the pay is good and the team skews young and social, but advises caution about which internal program you join due to turnover on some efforts. Interns do get real hardware exposure, including the Dream Chaser spaceplane and national-security satellite work.

Sierra Space's internship is one of the few on this site with a real, paid, structured program, but it is gated to US persons who can clear ITAR and a security clearance, and the roles close fast once postings open in September. Spend the runway building proof: a remote Externship turns interest in space hardware into a finished project you can name the moment a 2027 req goes live.