Tower Research Capital hires Quant Trader, Core Developer (C++) and Quant Researcher. Candidates report 5 to 6 interview stages depending on the track (6 distinct rounds across all tracks). Below: what each round tests and how to prepare, the path by track, the timeline, pay and a 4-week prep plan, drawn from candidate reports.
Tower Research Capital interview: quick answer
- StagesBy track: Quant Trader: 5 · Core Developer (C++): 6 · Quant Researcher: 5 (6 distinct rounds across all tracks)
- Online assessmentDeveloper 75-min 4-problem / wangce HackerRank DP / QR-QT probability
- Final roundTeam-Matched Rounds: Multiple rounds - format set by your team
- Pay (candidate-reported)Quant Trader, New grad (first year): $300k - $800k+ total comp
- RolesQuant Trader, Core Developer (C++), Quant Researcher
Preparing for Tower Research Capital? Work the rounds in order in the free Tower Research Capital interview funnel, or start with the free online-assessment sample (no signup).
The Tower interview process at a glance
| # | Round | Format and length | Who takes it | Prep |
|---|---|---|---|---|
| 1 | Online Assessment | Developer 75-min 4-problem / wangce HackerRank DP / QR-QT probability | All tracks | OA guidePractice |
| 2 | Recruiter / Team Matching | Phone - behavioral + team fit | All tracks | GuidePractice |
| 3 | Probability & Brain-Teasers | 45-60 min - video | All tracks | GuidePractice |
| 4 | C++ & Algorithms | 60 min - coding + C++ internals | Core Developer (C++) | GuidePractice |
| 5 | Quant / Statistics Round | 45-60 min - video | All tracks | GuidePractice |
| 6 | Team-Matched Rounds | Multiple rounds - format set by your team | All tracks | GuidePractice |
Stages are listed in the order candidates report them. Formats come from candidate reports and change between cycles, offices and teams; the "Who takes it" column shows which track each round belongs to.
How the Tower process differs by track
Tower runs separate loops for different roles. Here is the path each track reports, in order:
- Quant Trader (5 stages): Online Assessment → Recruiter / Team Matching → Probability & Brain-Teasers → Quant / Statistics Round → Team-Matched Rounds
- Core Developer (C++) (6 stages): Online Assessment → Recruiter / Team Matching → Probability & Brain-Teasers → C++ & Algorithms → Quant / Statistics Round → Team-Matched Rounds
- Quant Researcher (5 stages): Online Assessment → Recruiter / Team Matching → Probability & Brain-Teasers → Quant / Statistics Round → Team-Matched Rounds
Not sure which track fits you? See quant trader vs quant researcher.
Every Tower round: what it tests and how to prepare
1Online Assessment
Tower's screen is track-dependent. Developer / Quant-Dev: a 75-minute, 4-problem coding OA (a global-variable MCQ plus difference-array, hashmap+heap, and stack-parser problems), or a HackerRank DP set. QR / QT: a heavily probability-weighted technical screen (coupon collector, covariance of dice counts, random-walk distances, order-statistics). A strong C++ and probability bar is decisive.
How to prepare
- Probability is the QR/QT gate - drill order statistics, covariance, random walks, branching processes.
- C++ fluency matters - production is C++; expect it in later rounds.
- Developer OA is parser/DS-heavy - difference arrays, heaps, scope stacks.
Tower Research Capital online assessment guide →Practice this round →
2Recruiter / Team Matching
An intro conversation about background and interests, sometimes with a quick mental-math or probability warm-up. Crucially, this is also where you get routed toward a specific team -- and that team, not a central process, drives everything that follows.
How to prepare
- Your team is assigned here -- the rest of the loop depends on which pod you match with.
- Have a crisp background story and know why HFT / why Tower.
- Warm up your mental math -- quick arithmetic and probability come up early.
4C++ & Algorithms
For Core Developer roles: hard algorithm problems plus C++ internals (virtual destructors, const correctness, memory model). Clean, efficient, correct code is expected.
- Engineering phone screens include live C++ coding with a working engineer, about an hour each.
Question types: mostly coding, especially data structures, complexity analysis, C++ and graph algorithms. Latest candidate report for this round: Jun 2026.
How to prepare
- Know C++ cold -- virtual destructors, const correctness, pointers, the memory model.
- State complexity up front, then optimize -- latency mindset.
- Practice matrix/array and parsing problems -- search in a sorted matrix, RPN, largest zero submatrix recur.
Full C++ & Algorithms guide →Practice this round (33 questions) →
5Quant / Statistics Round
For research/trading: statistics, regression (R-squared properties, duplicated-data effects), and stochastic processes (Brownian motion, Markov chains). Connect the math to trading.
Question types: mostly regression, statistics and expectation, especially variance, expected value, conditional probability and random walk. Latest candidate report for this round: Jun 2026.
How to prepare
- R-squared properties (can it be negative? no-intercept case) come up -- know them.
- Brownian motion and Markov chains -- properties, hitting probabilities, stationary distributions.
- Tie statistics to signals -- explain how a result would inform a trade.
Full Quant / Statistics Round guide →Practice this round (44 questions) →
6Team-Matched Rounds
There is no single Tower onsite -- the team you matched with runs its own rounds, so the exact format and emphasis differ pod to pod (some lean trading/probability, others heavy C++/systems). This round surfaces the complete set of reported Tower problems across all topics so you can prep broadly regardless of which team you land on.
Question types: mostly probability, expectation and stochastic processes, especially expected value, first-passage and stopping times, random walk and symmetry. Latest candidate report for this round: Jun 2026.
How to prepare
- Expect variability -- ask your recruiter what your specific team weights.
- Prep broadly -- probability, coding, microstructure, and stats can all appear depending on the pod.
- Stay fast and precise under pressure across whatever the team throws at you.
Full Team-Matched Rounds guide →Practice this round (21 questions) →
Practice the Tower rounds in order
Each round in the Tower funnel has its own practice set, with worked solutions and progress tracking. A free account saves your progress across rounds.
A 4-week Tower prep plan
Built from the order of Tower Research Capital's rounds on the Quant Trader path and the topics in each round's practice set. Compress it if your first interview is sooner. Other tracks can swap in their own rounds from the table above.
| When | Focus | What to do |
|---|---|---|
| Week 1 | Foundations | Review coding, expectation and probability, the topics that dominate Tower Research Capital's practice sets. Start with Quant coding course and Probability course. Work the easy and medium questions in the Tower Research Capital question set. |
| Week 2 | Early rounds: Online Assessment, Recruiter / Team Matching and Probability & Brain-Teasers | Practice expectation, probability and stochastic processes under time pressure, and take the free OA sample (format notes in the OA guide). Add a daily mental-math drill. Talk every answer through out loud; interviewers score the reasoning. |
| Week 3 | Later rounds: Quant / Statistics Round and Team-Matched Rounds | Move to stochastic processes, regression and statistics. Do timed coding sessions in your interview language. Read how quant superdays work. |
| Week 4 | Rehearse the full loop | Run each practice round in order, redo the questions you missed, and prepare two project stories plus a specific answer to "why Tower Research Capital?" (see behavioral questions at trading firms). |
Tower pay
| Role | Level | Total comp | Notes |
|---|---|---|---|
| Quant Trader | New grad (first year) | $300k - $800k+ | Pod-dependent. Strong pods (Mosaic, Daedalus, La Tour, etc.) can push first-year total to $500k-$800k+; weaker teams sit well below. |
| Core Developer (C++) | New grad | $200k - $400k | Strong low-latency engineering comp; less pod-skewed than trading. |
Total compensation means base salary plus bonus and any sign-on, as candidates self-report it. Job postings usually show base salary only, so posted figures and outside salary pages often look lower. Rough ranges, NOT offers. Tower is POD-BASED, so comp varies enormously by team. First-year total on a strong pod can easily reach $500k-$800k+; weaker teams pay far less. The strongest desks (e.g. Mosaic, Daedalus, La Tour) drive the high end. Source: Candidate self-reports (levels.fyi, Glassdoor, and candidate forums) -- not employer-verified. Last updated May 30, 2026.
Tower teams and what their interviews test
Tower hires Quant Traders, Core Developers (low-latency C++), and Quant Researchers. Trading and research lean on probability, expectation, and microstructure; the engineering track adds heavy C++ internals and algorithms. All three share a fast, brain-teaser-flavored technical bar.
| Tracks | What it does | What its interviews test |
|---|---|---|
| Quant Trader Trader | Run a low-latency strategy on the shared platform. | Probability, expectation, fast mental math, brain-teasers, and market-microstructure intuition. |
| Core Developer (C++) Software Engineer | Build and optimize the ultra-low-latency trading stack. | C++ internals (virtual destructors, const correctness, memory), data structures, and hard algorithm problems. |
| Quant Researcher Quant Researcher | Signal and strategy research. | Probability, statistics, regression, and stochastic-process problems with follow-ups. |
About Tower
| Firm type | Proprietary high-frequency trading firm |
|---|---|
| Trading style | Engineering-deep; speed + probability · Ultra-low-latency / HFT |
| Founded | 1998 |
| Headquarters | New York, NY |
| Other offices | false |
| Capital | Proprietary (private) |
| Employees | ~1,100+ |
| Reported performance | ~$1-2.5B/yr (est.; pod-dependent) |
| Online assessment | Split by track: algorithms in C++ for engineers; probability plus a small data task for research and trading |
Founded 1998 by Mark Gorton & Alistair Brown
Tower Research Capital is a proprietary trading firm trading its own capital across global markets through semi-autonomous teams on a shared high-performance platform. It is known for deep investment in low-latency infrastructure.
Pod-based - the team you join is everything
Tower runs as semi-autonomous trading pods on a shared platform, so your experience and comp depend heavily on which team you land on. The strongest desks are where the big first-year packages come from; other teams pay far less. When you have a choice, the pod matters more than the firm name.
Culture
Engineering-first prop shop organized into semi-autonomous trading teams on a shared low-latency platform. Values fast, correct problem-solving and strong systems fundamentals. Latency and reliability are everything.
What the interviews feel like
Fast and technical, but NOT standardized -- the loop is run by whichever team you match with, so the exact rounds and questions vary pod to pod (like Jump). Across teams the recurring toolkit is probability and brain-teasers under time pressure, mental math, and -- for engineers -- C++ internals (virtual destructors, const correctness, memory model) plus algorithms. Market-microstructure questions appear for trading roles.
Highly siloed
Like several latency shops, Tower is very siloed: which group you join matters far more than the firm name. Diligence the specific team.
Practice for Tower on QuantVault
Practice
Courses
Games and drills
Further reading
- How quant superdays work
- Behavioral questions at trading firms
- Mental math for trading interviews
- C++ and low-latency interview questions
- Market-making game interview guide
- The quant interview process, explained
Similar firms to compare
Firms with a similar business and interview style. Many candidates interview at several of them in the same cycle.
Sources and how this guide is built
- Updated October 20, 2026; firm data last reviewed May 30, 2026; pay last updated May 30, 2026.
- Round detail draws on 101 questions candidates report from Tower Research Capital interviews (the most recent report across all rounds is from Jul 2026). A separate curated Tower question set of 100 problems collects the most useful practice for this firm.
- Public candidate reports and outside interview guides are cross-checked against each other. Where they disagree the page says "reports differ"; details from a single source are marked as candidate reports.
- No actual interview questions are reproduced on this page. The questions, with worked solutions, are in the practice rounds.
Tower interview FAQ
How many rounds are in the Tower Research Capital interview?
It depends on the track: Quant Trader: 5; Core Developer (C++): 6; Quant Researcher: 5 stages. Across all tracks candidates report 6 distinct rounds: Online Assessment, Recruiter / Team Matching, Probability & Brain-Teasers, C++ & Algorithms, Quant / Statistics Round, Team-Matched Rounds.
Is there an online assessment at Tower Research Capital?
Candidates report one: Developer 75-min 4-problem / wangce HackerRank DP / QR-QT probability. Tower's screen is track-dependent. Developer / Quant-Dev: a 75-minute, 4-problem coding OA (a global-variable MCQ plus difference-array, hashmap+heap, and stack-parser problems), or a HackerRank DP set.
What happens in the Tower Research Capital final round?
Team-Matched Rounds (Multiple rounds - format set by your team). There is no single Tower onsite -- the team you matched with runs its own rounds, so the exact format and emphasis differ pod to pod (some lean trading/probability, others heavy C++/systems). This round surfaces the complete set of reported Tower problems across all topics so you can prep broadly regardless of which team you land on.
Does the Tower Research Capital process differ by role?
Yes. Quant Trader: Online Assessment, Recruiter / Team Matching, Probability & Brain-Teasers, Quant / Statistics Round, Team-Matched Rounds. Core Developer (C++): Online Assessment, Recruiter / Team Matching, Probability & Brain-Teasers, C++ & Algorithms, Quant / Statistics Round, Team-Matched Rounds. Quant Researcher: Online Assessment, Recruiter / Team Matching, Probability & Brain-Teasers, Quant / Statistics Round, Team-Matched Rounds.
How much does Tower Research Capital pay?
Candidate-reported total compensation: Quant Trader (New grad (first year)) $300k - $800k+; Core Developer (C++) (New grad) $200k - $400k. These are self-reported totals including bonus, not offers; job postings usually list base salary only.
How should I prepare for the Tower Research Capital interview?
Prepare round by round over about four weeks: foundations first, then the early rounds (Online Assessment, Recruiter / Team Matching, Probability & Brain-Teasers), then the later rounds, then a full rehearsal. Each round has its own practice set on QuantVault, and the online assessment has a dedicated guide.
What does Tower Research Capital do?
Tower Research Capital is a proprietary high-frequency trading firm headquartered in New York, NY. Tower Research Capital is a proprietary trading firm trading its own capital across global markets through semi-autonomous teams on a shared high-performance platform. It is known for deep investment in low-latency infrastructure.
Start preparing for Tower Research Capital
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