Anduril Interview Process and the Double Mission Screen
- Pick your team first: autonomy in C++ and Rust, Lattice in TypeScript and Go, perception on edge GPUs
- Walk the pipeline: recruiter and phone screens, then a virtual onsite, commonly coding, design and mission-fit rounds; no take-home
- Plan for the ITAR US-persons gate and a mission screen at the recruiter call and final behavioral
The Anduril software engineer interview commonly runs four stages: a recruiter screen, a collaborative technical phone screen, a virtual onsite of about four rounds, and a fast offer. The onsite is usually two coding rounds, one system design or object modeling round, and one behavioral. The coding is LeetCode-style and often skinned in the defense domain. There's no take-home. And because the work falls under export-control law, the roles are generally restricted to US persons.
Find out which team you're interviewing for before you open a single problem. Anduril's software teams all orbit the Lattice platform and hire through the same careers page, but your interview follows the req you applied to. A screen for on-vehicle autonomy is a different conversation from a screen for the Lattice web application, sometimes in a different language. Guess wrong and you study the wrong stack for the wrong round.
The team split is the most Anduril-specific thing about hiring here, so it goes first and the shared pipeline second. Anduril publishes no per-team rubric. The split is something candidates describe, with no fixed script behind it, so prepare for the stack your team actually uses. Everything here is also written US-first, because it has to be. An export-control rule narrows the hireable audience to US persons, and that gets its own section further down.
Which Anduril Team Are You Interviewing For?
Lattice is the software spine of the company, described as a platform that classifies objects by fusing data from many disparate sensors. Nearly every product sits on it. Your interview depends on where your team plugs in. Cross from one track to the next and the coding language changes, and so does the design conversation, so find yourself in the list below.
Embedded & Autonomy (C++, and Rust on the job)
Air-vehicle autonomy, mission autonomy and on-target software: real-time, resource-constrained, hardware-adjacent work. Screens here are commonly told to be in C++, with a few days to prepare. Anduril is a known Rust adopter for embedded and autonomy, but Rust hasn't surfaced as an interview language. Study the domain and skip drilling for a Rust round.
Lattice Platform & Full-Stack (TypeScript, Go)
The command-and-control application layer: backend services over gRPC and protobuf, plus a web UI. It is the most conventional world at Anduril, closer to a standard backend or full-stack loop than to embedded work. Expect TypeScript on the front and Go or Java on the services.
Perception & ML (edge GPU, sensor fusion)
The classification and computer-vision layer that feeds Lattice, running inference on edge hardware such as NVIDIA Jetson with CUDA. This track has its own signal, more a CV-pipeline conversation than an algorithm grind. It is the least visible of the four from outside, so prep it as a known domain with an unknown format.
Mission Software
The glue between the platform and specific programs and missions, listed as its own track. It shares engineering DNA with the Lattice side but is framed around a mission or program instead of a single product surface. New-grad and generalist reqs are often tested on fundamentals first, then placed onto a team.
Two cautions before you over-index on the split. Anduril publishes no per-track rubric, so read a req's language and stack instead of guessing your team from its name. And Rust is used on the job for autonomy and embedded, but it isn't an interview language. Skip the "Rust round" prep. Match your prep to the stack your req names: C++ and real-time reasoning for embedded, TypeScript and Go for Lattice, a CV pipeline for perception.
The Software Engineer Pipeline
Below is the common shape reported across teams, and each stage gates the next. Round count and order vary by team and level, and Anduril doesn't publish the order. The character holds steady, though. The coding bar is real and there's no marathon take-home. Decisions tend to come fast once they come, and the mission-fit screen starts on the very first call.
- Typical stages: 4. A recruiter screen, a collaborative technical phone screen, a virtual onsite of about four rounds, and a decision. Round counts climb at senior levels and shift by team.
- The onsite: ~4 rounds. Commonly two coding rounds, one system-design or object-modeling round, and one behavioral with a senior leader. All live, in a shared editor.
- Take-home: None. Every round is live coding, with no project to submit. Your gate is the live rounds plus the mission-fit conversation.
- Turnaround: ~3-4 wks. Candidates often hear back the day after each round and finish in about three to four weeks. Recruiter comms are inconsistent, though, and slippage or silence after a decline is commonly reported.
Here is the path in order. Most of the signal comes from the onsite.
01Recruiter phone call
Role, team, headcount, and a first read on motivation, including a direct question about working in defense. Recruiters are often described as unusually personal, and also as inconsistent on follow-up. Confirm which team and req you are in, because the loop forks from here. The mission screen has already started.
02Technical phone screen
A coding round in a collaborative shared editor. The language depends on the team. Embedded and autonomy screens are commonly told to be in C++, while other screens accept Python. Style skews standard LeetCode, generally medium, sometimes with a domain-flavored follow-up. Prompts are often vague on purpose to make you clarify before you write code.
03Onsite: coding
Two coding rounds at the virtual onsite, practical and generally medium, and often dressed in the defense domain. The grading rewards working code built up through escalating requirements. Complexity still matters, so treat it as requirement-driven engineering more than a pure algorithm sprint.
04Onsite: system design or object modeling
One round, and the most misprepped in the loop. It centers on modeling a component of a mission-critical system, a physical or real-time domain, or a clean object model, well away from web-scale distributed design. Domain reasoning counts for more here than sharding and capacity math.
05Onsite: behavioral and mission fit
A conversation with a senior leader about ownership, honest self-assessment, and buy-in to the defense mission. It is often a mutual alignment check, where the interviewer shares why they joined. This is the second half of the double mission screen, and it is a real gate.
06Decision and offer
Decisions are often fast, from same-day to within a week. If you clear the loop but a team thinks you fit elsewhere, the recruiter may circulate your profile, which can add a round or two. Offers do come after positive feedback, though some candidates report a reversal, so a strong onsite alone doesn't guarantee one.
When the fast cadence holds, it really is fast. It doesn't always hold. Missed meetings, post-onsite delays and quiet stretches show up often enough that you should keep other processes warm and not read silence as a verdict. No clean end-to-end application-to-offer figure has surfaced, so plan in weeks and get each next step confirmed in writing.
Coding: LeetCode, Defense-Skinned
Does Anduril do LeetCode? Yes. Unlike some defense-adjacent loops, it runs standard data-structures-and-algorithms rounds, generally medium, the kind of problem you'd find in any standard curated set. There's no Anduril problem tag to grind, so a top-50 list won't buy you much. Put the hours into the pattern mix and the style instead.
The Anduril angleDrill the recurring patterns behind the named problems. A monotonic stack handles the days-until-warmer question from the daily-temperatures family. The border-sensor range is binary search on the answer. For grids you want BFS and DFS: island counting, gates and walls, max-value paths. Then add robustness-heavy parsing, where you evaluate a modified expression, handle a power operator and non-integer or invalid input, and write your own test cases. Group anagrams and course-schedule-style graph work round it out. Expect each one dressed in sensors, towers and pathfinding. Practice thinking out loud, because the clarify-first, code-through-phases style is what gets scored.
System Design Is Not Alex Xu
This is the round candidates misprep most. They arrive ready to shard a database, put a CDN in front of it and estimate queries per second, and the interviewer wants to talk about something else. Anduril's design round is object and domain modeling of a mission-critical component, closer to low-level design and real-world systems than to a distributed back end. Reported prompts include modeling a radar system for a moving ship, implementing a doubly linked list from scratch with its insert, delete and edge cases, and explaining a computer-vision pipeline. One generic distributed-logging prompt is the exception.
The Anduril angleThe ITAR Hiring Gate
Anduril builds defense systems, which fall under US export-control rules. Its roles carry a hiring restriction to US persons unless the government authorizes an exception, and some roles also require a security clearance. The definition is wider than people tend to assume. A US person isn't only a citizen or green-card holder. Protected individuals such as asylees and refugees count too, so "citizens only" overstates it. The exact Anduril clause wording varies by req, so read the eligibility line on the specific job posting.
The hireable audience is US persons: citizens, lawful permanent residents, and protected individuals such as asylees and refugees. That is also why the search-and-prep world around Anduril is US-concentrated, and why this guide is written US-first. If you aren't a US person, or a role names a clearance you don't hold, nothing in the loop matters until that's resolved. Sort out eligibility before you spend weeks preparing.
Levels
Publicly, the software IC ladder runs from an entry Software Engineer up through the senior and lead bands: IC2 and IC3 Software Engineer, IC4 Senior Software Engineer, IC5 Lead Software Engineer, then IC6 and IC7 above. Those IC codes come from a public compensation aggregator and aren't a confirmed internal scheme. Treat them as scope labels. Management is a separate, higher-paid track. Anduril doesn't publish how a specific level gets assigned, so assume the req, the scope and your experience set it. The full compensation and decision picture is in the next lesson.
IC2 Software Engineer (entry)
The entry rung, typically a new-grad or early-career hire. Owns well-scoped pieces of a system while ramping on the stack, the team and the pace. Equity is a large and growing part of the package from the start.
IC3 Software Engineer
The core individual-contributor band, where most mid-level engineers sit. Owns features and services end to end and makes real design calls. Equity climbs as a share of total compensation.
IC4 Senior Software Engineer
The senior IC band. Leads harder projects, mentors, and carries the deeper systems and domain reasoning that the design and behavioral rounds probe hardest.
IC5 Lead Software Engineer
Broad technical ownership across a program or platform area, driving architecture and setting direction for a team of engineers.
IC6 and IC7
The staff-and-above rungs, where equity is the dominant part of the package and total compensation climbs sharply. The codes are approximate, so read the ladder above lead as scope.
Mission Fit Is the Rubric
Don't go looking for an Anduril leadership-principles list to memorize. There isn't a published one, and the mission carries the culture. Anduril was founded in 2017 to build advanced autonomous military systems and to modernize the militaries of the United States and its allies. It applies Silicon Valley's rapid-iteration approach to defense. The "rebuild the arsenal of democracy" framing is real and current, backed by the Arsenal Project and its hyperscale weapons-manufacturing build in Ohio. The company is private, valued around sixty-one billion dollars as of May 2026, up steeply from prior rounds. Employees reference an anticipated IPO. When a leader asks why Anduril, that's the register your answer has to live in.
The Anduril angleWhat This Guide Covers
Coding, Defense-Skinned
How the medium-ceiling DS&A rounds get graded (clarify first, then code through phases), and the pattern mix behind the border-sensor and daily-temperatures signatures.
System Design as Component Design
The misprep correction in full: object and domain modeling of a mission-critical component, from a radar model to a control loop. Framed as a real discussion, with web-scale capacity math kept to the side.
Embedded, C++, and the Stack
The autonomy and embedded world and its real-time, resource-constrained reasoning. Plus how to prep to the stack your req names when the split is reported, with no fixed rubric.
Behavioral and Mission Fit
How the double mission screen, the ethics-dilemma prompt and the ownership questions are judged, grounded in the company mission.
Leveling and the Offer
How the IC ladder maps to scope, and why a large, private, illiquid equity component tied to an anticipated IPO changes what you negotiate.
Common questions
How many rounds of interviews does Anduril have?
For a software engineer, commonly four stages: a recruiter screen, a collaborative technical phone screen, a virtual onsite of about four rounds, and a decision. The onsite itself usually holds two coding rounds, one system-design or object-modeling round, and a behavioral with a senior leader. The order and count vary by team and level, and senior loops run longer.
Does Anduril do LeetCode?
Yes. Anduril runs standard data-structures-and-algorithms rounds in a live shared editor, generally medium and drawn from the common curated set. There is no Anduril problem tag to grind, and the problems are often skinned in the defense domain. Prep the transferable patterns: monotonic stack, binary search on the answer, grid BFS and DFS, robustness-heavy parsing. Then rehearse the clarify-first, code-through-phases style, because that is what gets scored.
How difficult is an Anduril interview?
It is a real bar, but less folkloric than the harshest defense-tech loops. Coding tops out around medium, and mission fit is weighted heavily alongside it. Decisions are fast but can be opaque, and some candidates are reversed after positive feedback. Clean code alone doesn't guarantee an offer, because fit and depth count as much as algorithms.
How long does the Anduril interview process take?
Often about three to four weeks, and candidates frequently hear back the day after each round. Recruiter communication is inconsistent, though. Delays or silence between stages are commonly reported, especially after a candidate declines. No reliable end-to-end figure has surfaced, so plan in weeks, keep other processes warm, and confirm each next step in writing.
What coding language does Anduril use?
It depends on the team. Embedded and autonomy screens are commonly told to be in C++, while other screens accept Python. The Lattice platform and full-stack world leans on TypeScript on the front and Go or Java on the services, over gRPC and protobuf. Rust is used on the job for autonomy and embedded. It hasn't been confirmed as an interview language, so don't prepare for a Rust round.
Is working at Anduril stressful?
It is demanding. Hours run long, around fifty to sixty a week with real travel. Work-life balance is the lowest axis employees rate the company on, though it reads as less extreme than the roughest reputations in the sector. The consistent draw people name is the mission. Decide honestly whether that trade is one you want before the recruiter call, because the loop screens for real buy-in.
Can non-US citizens work at Anduril?
Hiring is restricted to US persons because of US export-control rules covering defense systems, and some roles also require a security clearance. A US person is a citizen, a lawful permanent resident (green-card holder), or a protected individual such as an asylee or refugee. If you fall outside that category, the constraint sits upstream of the interview. Confirm your eligibility on the specific job posting before investing in preparation.
Key Takeaways
- ✓The team split is the headline. Embedded and autonomy run C++ and Rust, the Lattice platform and full-stack run TypeScript and Go, and perception and ML run on the GPU edge. The split is reported, with no published rubric. Read your req and prep to its stack, and don't assume a Rust round.
- ✓The pipeline is a recruiter screen, a collaborative technical phone screen, and a virtual onsite of about four rounds: two coding, one system design or object modeling, and one behavioral. There is no take-home. Decisions are often fast, and order and count vary by team and level.
- ✓Yes, Anduril does LeetCode, generally medium and often defense-skinned. It is graded clarify-first through escalating phases, with working code weighted over a perfect Big-O. The system-design round is the misprep trap. Expect component and domain modeling of a mission-critical system, where web-scale distributed prep misfires.
- ✓Two gates decide the offer beyond coding. One is the ITAR US-persons restriction, which covers citizens, permanent residents and protected individuals. The other is a double mission screen, at the recruiter call and the final behavioral, about whether you are comfortable building defense systems. Answer both honestly, and early.
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