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

Last updated: July 2026

SIG pays its master’s and PhD quant-trader interns $8,600 a week, $86,000 for a 10-week summer, topping Jane Street and Citadel for advanced-degree roles. That number tells you two things: the work is real, and the bar to get in is extreme. For the 2027–2028 cycle (you apply during 2027, you intern in summer 2028), applications are expected to open around June to August 2027 based on the current cycle’s pattern. No acceptance rate exists, so the prep you bring and the week you apply are the only levers you control.

Quick Facts

SIG runs eight intern tracks from a 600,000 sq ft campus in Bala Cynwyd, PA, with company-paid housing, daily meals, and the highest quant-intern comp in the industry. No official acceptance rate, no published deadline, so timing and quantitative prep are the filters.

Externships are short, remote projects where you finish real work for a real company. The Yinan Zhao Investing Financial Modeling Externship and Wayfair AI Agent Engineering Externship build the quantitative reasoning, financial modeling, and engineering evidence a SIG application rewards. Explore all Externships.

What Is a SIG (Susquehanna International Group) Internship?

A SIG internship is a paid, 10-week summer placement at one of the world’s largest quantitative trading firms, founded in 1987 by a group of poker players who turned game theory into a market-making empire. The firm manages $868 billion in total assets, employs 3,000+ people across 14 offices, and trades roughly 7% of US ETF volume. Interns work on real trading desks, build production systems, and go through the same multi-week training program that teaches options theory, mock trading, and poker strategy. The reviews hold up: 3.8 out of 5 on Glassdoor with 71% recommending it, and the compensation is the industry’s highest for quant interns.

When Do SIG (Susquehanna International Group) Internship Applications Open for 2027–2028?

SIG’s calendar is predictable from the current cycle. Summer 2027 quant trader and software roles posted in June to July 2026, about 11 to 12 months before start. So for summer 2028, expect applications to open around June to August 2027. SIG accepts applications rolling but recruits in a late-summer burst, so the date you submit matters more than the date you polish your resume.

Why You Must Apply the Week Applications Open

SIG’s careers page says, "Apply, and we’ll reach out in late summer when recruiting begins." That means applications accumulate, and the first batch processed gets the most open seats. Community consensus is that early applicants have an advantage because SIG’s recruiting window is concentrated. The firm does not publish a hard deadline, but once the late-summer recruiting burst starts, slots fill fast. So set an alert on careers.sig.com, and submit within the first week of a posting going live.

Which SIG (Susquehanna International Group) Internship Programs Should You Target?

SIG runs eight distinct intern tracks, spanning quantitative trading, software engineering, and operations. Which one should you target? The honest answer is the track whose quantitative skills you can already evidence, because every round tests probability, expected value, and decision-making under uncertainty.

See every open track on the official internships page. Also check the EU intern openings for Dublin and London positions. The calendar is uniform: all tracks follow the same June-to-August posting window.

What Are the Eligibility Requirements?

SIG’s requirements are consistent across tracks, with a few role-specific differences:

• Enrollment: currently enrolled in an accredited college or university with at least one term remaining after the internship ends. Intention to graduate with a bachelor’s or master’s degree within one year of the program.

• GPA: minimum 3.0 GPA required across all tracks.

• Accepted majors: varies by track. Quantitative Trader wants Math, Physics, CS, Engineering, or Economics. Software Engineering wants CS or Computer Engineering. Operations accepts Finance, Math, CS, or related majors.

• Work authorization: not explicitly stated on job postings. US offices (Bala Cynwyd, NYC, Chicago) likely support CPT/OPT for international students. Dublin and London offices serve applicants without US work authorization.

Does SIG Require Finance Experience?

No. SIG’s multi-week training program teaches options theory, market making, and trading strategies from scratch, and the firm explicitly hires from non-finance backgrounds (Math, Physics, CS, Engineering). What they do require is strong quantitative reasoning: the 20-minute online assessment and every interview round test probability, expected value, and logic under time pressure. So your coursework in probability and your speed on mental math matter far more than whether you’ve taken a finance class.

What Skills Does SIG (Susquehanna International Group) Look For, and How Do You Build Them?

Read across six SIG intern job descriptions, two Quantitative Trader, one Quantitative Strategy Developer, one Software Engineering, one Operations, and one Quantitative Systematic Trading, and the pattern is clear. Probability and expected value reasoning appear in five of six, programming in four, mental math speed in three, and game theory plus communication each in three. But the skill list is only half the story. SIG’s game-theory and decision-science culture means every interview also evaluates how you make decisions under uncertainty, handle cognitive biases, and think about incomplete information. So bring the math, then show you can reason about bets.

How Is Demand for Quantitative Trading Interns Moving Right Now?

Build These Skills Before You Apply

And every skill in that chart maps to a remote Externship where you finish a real project before a role opens.

How close is the overlap? The Yinan Zhao project is financial modeling and valuation work that yields the quantitative-reasoning evidence SIG’s probability interviews probe for, and the Wayfair project ends on the engineering and systems-thinking story a QSD or SWE round wants.

What Is the SIG (Susquehanna International Group) Application and Interview Process Like?

SIG’s funnel is a four-stage quantitative gauntlet, with a total timeline of roughly 2 to 8 weeks from application to offer:

1. Apply on careers.sig.com. Pick a specific track (QT, SWE, QSD, Operations) and submit. Target the track whose skills you can already evidence.

2. Online Assessment (~20 minutes). The SIG Quantitative Evaluation: logic puzzles and brain teasers on the Mettl platform. Fast, timed, and designed to test raw quantitative reasoning, not finance knowledge.

3. Phone Screen. Recruiter-led discussion covering background, motivation, "Why SIG?", market awareness, and basic probability brain teasers. This is the fit and baseline-math filter.

4. Technical Video Interview (60 minutes). Typically with a senior trader. Focus: probability-based math questions, CV deep-dive, and analytical problem-solving under pressure. Expect dice rolls, card problems, conditional probability, and expected value scenarios.

5. Final Super Day (~90 minutes). Two components: technical challenges plus HR/fit discussions. This is where SIG evaluates decision quality, not just answer correctness. The firm values "relaxed confidence" and systematic thinking.

So the two skills to drill are clear: probability and expected value fluency for every round (target 40+ on Zetamac in 2 minutes for mental math), and poker/game-theory intuition that shows you understand decisions under uncertainty. Learn Texas Hold’em pot odds, study the Kelly criterion, and practice breaking complex problems into steps.

What Students on Reddit Say

Three community perspectives show what the SIG process looks like from the inside, all paraphrased.

SIG's interview process is heavy on probability, expected value, and mental math. Expect poker-style brainteasers and market-making scenarios even for SWE roles. Practicing with puzzles from trading-interview prep books gives you the best edge.

r/csMajors consensus, paraphrased · read the thread

The quant research second round at Susquehanna digs deeper into statistics and probability theory than the first screen. Be ready to walk through your reasoning out loud, because interviewers care as much about your thought process as the final answer.

r/quantfinance consensus, paraphrased · read the thread

For the QR/QST technical rounds, SIG leans into combinatorics, conditional probability, and options intuition. Candidates recommend grinding probability puzzles and being comfortable explaining edge cases under time pressure.

r/quantfinance consensus, paraphrased · read the thread

How Do You Stand Out at a Firm That Hires Poker Champions?

Three moves, all before a role opens. First, build mental math speed until probability problems are automatic: SIG’s 20-minute online assessment is the first gate, and community prep guides recommend scoring 40+ on Zetamac in 2 minutes. Second, learn game theory and poker basics, because SIG employs three WSOP bracelet winners and uses poker as a training tool, so showing you understand pot odds and expected value signals cultural fit. Third, bring quantitative projects with real deliverables, so "tell me about a time you reasoned under uncertainty" gets a finished analysis, not a hypothetical. And remember: community reports suggest high return-offer rates for strong performers, so interview like the full-time seat is on the table.

What Other Companies Should You Consider?

SIG competes for the same quantitative talent as the other elite trading firms. If you’re building a quant-internship list, these are the obvious neighbors:

• Jane Streetthe other top-comp quant firm; functional-programming culture vs SIG’s game-theory focusGuide →
• Citadelmulti-strategy hedge fund with both trading and engineering tracksGuide →
• Two Sigmadata-science-heavy quant fund; more ML, less pokerGuide →
• D.E. Shawsystematic strategies with a strong tech-engineering cultureGuide →
• OptiverAmsterdam-origin market maker; similar trading-floor cultureGuide →

Our quant trading internships guide maps the whole landscape, timeline by timeline.

FAQ

When should I apply for a Summer 2028 SIG internship?

Expected June to August 2027, based on the current cycle where Summer 2027 roles posted June to July 2026. SIG begins recruiting in late summer and the window is concentrated, so apply in the first week postings go live. Set an alert on careers.sig.com.

What GPA do I need for a SIG internship?

Minimum 3.0 GPA required across all tracks. But strong quantitative coursework and probability skills matter more than a decimal on your transcript. SIG hires from Math, Physics, CS, Engineering, and Economics backgrounds.

Do I need finance experience to intern at SIG?

No. SIG’s multi-week training program teaches options theory, market making, and trading strategies from scratch. What you do need is strong quantitative reasoning: probability, expected value, mental math, and the ability to make decisions under uncertainty.

What is the SIG internship interview process?

Four stages: a 20-minute online quantitative assessment (logic puzzles and brain teasers on Mettl), a phone screen (behavioral plus probability), a 60-minute technical video interview (probability math with a senior trader), and a final Super Day (~90 minutes, technical plus fit). Total: roughly 2 to 8 weeks.

How much do SIG interns earn?

Quant Trader interns (Master’s/PhD): ~$8,600/week ($86,000 for 10 weeks) plus free housing and meals. Quant Trader interns (undergrad): ~$150/hr. Software Engineering interns: ~$69/hr ($12k/month) plus a $10k sign-on bonus. All tracks receive company-paid housing, daily meals, a $600 transportation stipend, and gym access.

Do SIG interns get return offers?

No official conversion rate is published. Community reports on Wall Street Oasis suggest high return-offer rates, with one thread noting all Dublin interns who wanted to return were invited back. This varies by team and performance. Treat it as a paid 10-week audition.

What makes SIG different from other quant firms?

Three things: a poker and game-theory-based culture (SIG employs three WSOP bracelet winners and uses poker as a training tool), the highest quant-intern compensation in the industry ($8,600/week for advanced-degree traders), and a non-hierarchical, campus-like environment at a 600,000 sq ft Bala Cynwyd HQ with extensive amenities.

Can international students intern at SIG?

SIG does not explicitly state visa sponsorship policy. US offices likely support CPT/OPT for international students. Dublin and London offices serve applicants who do not have US work authorization. Check the specific posting for your target location.

SIG’s bar is quantitative, not financial. You don’t need to know options pricing yet, but you do need probability fluency and the projects to prove it. Spend the runway building proof: a remote Externship turns ‘interested in SIG’ into a finished quantitative project you can point at.

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About the Author

Bifei Wang has spent 17 years focused on human flow and the growth of young professionals, spanning international education, career training and coaching, and recruitment process outsourcing. Over 7 years at Extern, he has had one-on-one sessions with thousands of students exploring careers in consulting, finance, tech, marketing, and data, giving him a firsthand view of how the job market has shifted for early-career professionals and what it actually takes to break in.