How to Move From Big Tech to a Startup: What Changes

Moving from big tech to a startup usually means trading liquid, predictable RSUs for cash you can count on and equity you can't, and trading a large, specialized team for a small one where you build the tooling yourself. It tends to go well when you price what you're walking away from, pick a stage on purpose, negotiate the gap, and expect the scope shock.

Definition: In this guide, big tech means large, public technology companies (FAANG-type employers) where pay is a mix of base salary, bonus and restricted stock units (RSUs) that vest on a schedule and can be sold soon after they vest.

Big tech people tend to underestimate the move in two directions at once. They underestimate how much money they're leaving on the table, and they overestimate how much of their big-company toolkit will work at a 30-person company.

Both are fixable. This guide works through the math first, then the job. For the broader comparison of the two paths, see our sibling guide on startup vs. big tech.

What you give up: the unvested equity math

Start with a number most people avoid writing down: the value of everything that would vest if you stayed.

At a public company, unvested RSUs are close to cash. They vest on a schedule, and once vested you can usually sell them. Carta's RSU guide notes that a four-year schedule with a one-year cliff is common, that unvested shares are typically forfeited when you leave, and that RSUs are taxed as ordinary income when the shares are delivered.

So list, for the next 24 months:

Every vest date and the number of shares from your initial grant.
Every refresher grant and its schedule (refreshers are additional grants given after you join, and they're often what keeps your pay high in years three and four).
Your target bonus.
Any sign-on bonus you'd have to repay if you left early.

Then value the shares at today's price, and again 20 percent lower. Stock moves, and that cushion keeps the comparison honest.

A worked example: big tech to startup pay

The numbers below are illustrative, chosen to show the math.

Staying at big tech (next 12 months): $210,000 base, a 15 percent target bonus ($31,500) and $150,000 of RSUs vesting from the initial grant and refreshers. Total: $391,500.

Series A startup offer: $185,000 base, no bonus, and options on 0.30 percent of the company (45,000 options out of 15,000,000 fully diluted shares) at a $1.20 strike price, vesting over four years.

The annual gap is $206,500. Over four years, if your big tech pay held roughly flat, that's $826,000. Exercising all the options would cost $54,000.

Assume later rounds dilute you by 40 percent, so 0.30 percent becomes 0.18 percent at a sale. Before taxes and ignoring investor preferences:

Sale at $100M: 0.18 percent is $180,000, or $126,000 after exercise.
Sale at $300M: $540,000, or $486,000 after exercise.
Sale at $1B: $1.8M, or $1,746,000 after exercise.

Break-even is roughly $489M ($880,000 divided by 0.18 percent).

Now negotiate. If the startup adds a $100,000 sign-on bonus and raises the grant to 0.45 percent (67,500 options, $81,000 to exercise), the four-year gap drops to $726,000 and the stake at exit becomes 0.27 percent. Break-even falls to about $299M.

Our read: the move rarely wins on expected dollars alone for a senior big tech employee, and that's fine if you're going for other reasons. Make the bet with your eyes open, and make sure your budget works with the equity at zero.

What changes when you go from big tech to a startup

The money is the easy part to model. The job is harder.

Scope gets wider and shallower. At big tech, you may own one service, one metric or one slice of a product used by millions. At a startup, you might own the whole backend, the on-call rotation and half the hiring loop. Carta's State of Startup Compensation for the second half of 2025 put the median seed-stage company on its platform at 4 employees and the average Series B company at 45.

Infrastructure disappears. No internal platform team, no build system someone else maintains, no data pipeline that just works, no recruiting coordinator. You'll use off-the-shelf tools and fix them yourself. Willem Spruijt, who spent six years on Uber's payments team before cofounding a startup, singled out the missing specialist teams (infrastructure, security, data science, observability) in a guest piece for Gergely Orosz's Pragmatic Engineer newsletter.

Process is lighter, and that's on purpose. Design reviews, launch checklists and promotion packets exist because large companies need them. A 20-person company usually doesn't, and importing them tends to slow everyone down. First Round Review's 2022 roundup of advice for people leaving big companies makes a related point: adapt your old playbook rather than copy it, and think of startup speed as how quickly decisions get made.

Impact is visible, and so are mistakes. Your work reaches customers in days. So do your bugs.

The brand stops opening doors. Customers and candidates don't know the startup. Your job now includes selling it.

Many big tech people find this energizing within a few weeks. Some find it exhausting for months. It's worth being honest with yourself about which one you're likely to be.

How to choose the right stage after big tech

Stage shapes almost everything: pay, equity, risk and the kind of work you'll do.

Seed (a handful of people). The biggest equity percentages and the most risk. Carta's early-employee data for 2024, covering more than 9,000 initial grants, puts the median first hire at about 1.5 percent of fully diluted shares, with grants clustering around 0.3 percent by the sixth hire. Carta's February 2026 analysis of 12,249 seed rounds found that no quarterly seed cohort since Q3 2021 reached a 30 percent rate of raising a Series A within two years.

Series A and B (roughly 15 to 100 people). Often a strong fit for a first move out of big tech, in our view. There's a product, paying customers and enough structure to land, but your experience with scale is starting to matter.

Growth stage (100+ people). Pay gets closer to big tech and the equity is easier to value. The work can feel like a smaller big tech, which suits some people and disappoints others.

A useful filter: what problem does the company have that your big tech experience actually solves? If it's scaling a system, hiring a team or building a platform, later stages tend to need you more. If it's "nothing yet, but I'm smart", seed may be a rough landing.

Also look at how the company raised. We've written about the too-much-money problem at pre-seed: a huge early round can buy time, but it can also numb the discipline that makes small teams good. Our explainer on default alive or default dead gives you the runway math to check either way.

To scan options, we'd filter the startup jobs track on the 1752vc careers board by your level (Senior or Principal+) and Past 7 days. The board lists open roles at venture-backed startups, AI companies and VC firms with a US focus, refreshed every week, with each employer's own posting date.

How to negotiate a startup offer when you're leaving big tech

Startups usually can't match big tech cash. That doesn't mean the offer is fixed. Levers worth asking about:

A sign-on bonus to cover part of the unvested RSUs you're forfeiting. Show them the vest schedule.
More equity in place of cash, if you believe in the company. Ask for the share count and the fully diluted total so you can compute the percentage.
A longer exercise window. Carta notes most companies apply a 90-day window after you leave to exercise vested options, so a longer window can be worth real money if you leave before an exit.
Early exercise, where the company lets you buy unvested shares early. It can change your tax picture, so talk to a tax adviser first.
Title and scope, written into the offer, especially if you're joining to lead a team.
Timing. Starting after a big vest date can be worth tens of thousands of dollars for nothing more than a few weeks' patience.

On taxes, the IRS distinguishes incentive stock options (generally no income at grant or exercise, though exercising can trigger the alternative minimum tax) from nonstatutory options (the spread is taxable at exercise). Ask which type you're getting. Our guide to the employee equity offer letter lists the rest of the terms to check.

"Big tech pay is so high you won't make it back"

It's a reasonable worry. Levels.fyi's 2025 End of Year Pay Report, based on self-reported data, put median total compensation for US software engineers at $312,000 at the senior level and $457,000 at staff. Most startups can't touch that in cash.

But pay isn't all that compounds. A few years of owning a whole system, hiring a team or helping take a product from zero to revenue can raise the ceiling on your next role, and startups have been sharpening offers for some roles. Carta's same compensation report found median initial equity grants for AI and ML engineers on its platform rose 31 percent between January 2024 and February 2026, and median salaries for those roles rose 9.1 percent.

Our view: if the money is your main goal, big tech is often the safer bet. If you're optimizing for scope, ownership or one day founding a company, a startup can be worth the trade. If you want to keep the door open, it's worth knowing that people do go back: our guide on moving from a startup to big tech covers how.

Common ways big tech to startup moves go wrong

Waiting for the platform. Expecting tooling, data and support that don't exist yet.
Over-engineering. Building for a billion users when the company has 40 customers.
Rebuilding big tech process. Weekly review meetings and long design docs for decisions that should take an hour.
Managing instead of doing. Senior people sometimes arrive expecting to lead a team that hasn't been hired. At a startup, many leaders write code or close deals for a while first.
Judging the company by its brand. Diligence the runway, the customers and the founders, not the logo of the lead investor.
Leaving right before a big vest. A calendar check can be worth a lot.
Counting the equity before it exists. Value it at zero in your budget.

Where we land

We think moving from big tech to a startup is a good move for many people, but it's a different job, not a better-paid version of the same one. Do the unvested math, negotiate the gap, pick a stage that needs what you've built, and expect the first few months to feel uncomfortable.

That's one view, and your situation gets the final say. If you're carrying a mortgage on a big tech salary, staying through a large vest or picking a later-stage company may be the wiser version of the same move. If you're ready, start with a short list from the startup track and talk to people who left your company for those teams. If you're leaving the corporate world more broadly rather than big tech specifically, our guide on moving from a corporate job to a startup covers that move.

The bottom line

At big tech, the system was built before you got there.

At a startup, you're part of the system being built.

Key takeaways

Write down every unvested RSU, refresher and bonus you'd forfeit over the next 24 months before comparing offers.
In the illustrative example, a Series A stake needed a roughly $489M sale to cover the gap, falling to about $299M after negotiating a sign-on bonus and more equity.
Expect wider scope, missing infrastructure and lighter process; importing big tech habits is a common failure mode.
Series A and B companies often suit a first move out of big tech, while seed offers the most equity and the most risk.
Negotiable levers include sign-on bonuses, equity size, the exercise window, early exercise, title and start date.

Frequently asked questions

Should you leave big tech for a startup with unvested RSUs?

It depends on how much is unvested and why you're moving. Price the RSUs and bonuses you'd forfeit over the next one to two years, then compare them with the startup's cash and an honest view of the equity. Many people time the move after a large vest date or negotiate a sign-on bonus to cover part of the gap.

Will a startup buy out your unvested big tech RSUs?

Rarely in full. Startups usually can't match public-company equity in cash, but many will discuss a sign-on bonus, a larger option grant or a mix of both to close part of the gap. Bringing your actual vest schedule to the conversation tends to make the request concrete and easier for a founder to evaluate.

What stage startup should a big tech engineer join?

Many big tech engineers find Series A or B companies a good first fit, because there is a product and customers but still plenty of scope, and their experience with scale starts to matter. Seed offers larger equity percentages with far more risk, while growth-stage companies feel closer to big tech in pay and process.

Why do big tech employees struggle at startups?

The most common reasons are missing infrastructure, wider scope and lighter process. People used to platform teams, data pipelines and recruiting support can stall when those don't exist, or slow the team down by over-engineering and adding process. Those who adjust quickly tend to ship small things early and build tooling only when it's needed.

How do you negotiate a startup offer when leaving big tech?

Ask for the share count and fully diluted total, then negotiate on the levers a startup controls: a sign-on bonus, a larger option grant, a longer post-departure exercise window, early exercise, title and start date. Showing your forfeited vest schedule helps. A tax adviser can explain how your option type and any early exercise affect you.

Sources

Disclaimer: This guide is for general education only and is not legal, tax or investment advice. Laws, market data and program terms change, so it may not reflect the latest developments or fit your situation. Treat it as a starting point, not a source of truth, and talk to a qualified lawyer, accountant or financial adviser before you make decisions.