1099 Software Developer Jobs in Seattle, WA

Seattle by the numbers

There are 72,730 software developers working in Seattle-Tacoma-Bellevue, WA. That figure counts every employment arrangement, W-2 and 1099 alike — BLS does not split the two. Applying 1099WORK's estimate that roughly 30% of software developers work on a 1099 basis puts the independent share near 21,819 people. Treat that as an order of magnitude, not a census. By headcount the market ranks 4th of the 379 metro areas where BLS publishes a figure for this occupation, putting it in the national top ten percent.

Concentration is the more interesting number. The location quotient is 3.25, meaning software developers make up a share of local employment 225% larger than they do nationally. Demand here is structural, not incidental. Per head of population it ranks 3rd of 379 — a genuine cluster rather than a by-product of metro size. The metro accounts for 80% of Washington's total employment in the occupation. The metro's population is 4.1 million, roughly flat since 2020.

A concentration that far above the national average means employers here are not incidental buyers of the skill — they are the reason the cluster exists, and they buy accordingly. Local pay above the national line is worth holding out for — it is the difference between a national rate and what this market will actually bear. One local factor never shows up in wage data at all: Washington levies no state income tax, so a given gross goes further here than the same gross in a taxed state.

Software Developer pay in Seattle

BLS puts median annual pay in Seattle at $169,340. That works out to $81.42 an hour at a standard 2,080-hour year. That is 27.2% above the national median of $133,080.

These are W-2 and 1099 earnings combined, before any contractor adjusts for self-employment tax and unfunded benefits — which is what the next section is for.

Benchmarking Seattle

Pay in Seattle tracks the Washington median almost exactly. Against the national median of $133,080 it sits 27.2% above. The location quotient column is the one worth reading twice: it measures how concentrated the occupation is relative to the national average, and it moves independently of pay.

The rate that makes 1099 worth it

A 1099 contract that pays the same headline number as a W-2 job is a pay cut. You pick up the employer's half of payroll tax, you stop being paid for holidays and time off, and health cover and retirement come out of your own revenue. Matching a $169,340 salary in Seattle therefore takes about $225,874 in contractor gross — a multiplier of 1.33×.

Spread across a full 2,080-hour year that is $108.59 an hour. Nobody bills 2,080 hours: at a more realistic 80% utilisation, with the rest going to admin, invoicing and finding the next contract, the number you should quote is closer to $135.74.

The 1.33× multiplier assumes:

• 7.07% for the employer half of FICA, which self-employment tax shifts onto you
• 20 unpaid days a year — roughly ten holidays plus two weeks off
• 15% for health coverage and retirement you now fund yourself
• excludes business insurance, mileage, accounting fees and unbilled time

Nearby markets for software developers

Contractors are not bound by a metro line the way a commuting employee is, and the neighbouring markets often price the same work differently. Within reach of Seattle:

The tax consequence

Nothing is withheld from a 1099 payment. You pay self-employment tax at 15.3% on 92.35% of net profit, plus income tax, in four estimated payments a year. At the Seattle median that is roughly $5,982 a quarter in self-employment tax alone, before income tax. Washington levies no state income tax, so the federal bill is close to the whole picture.

The classification caveat

Labelling an engagement 1099 does not make it 1099 — the IRS weighs who controls the work, who supplies the tools and who carries the risk. For software developers the usual flashpoints are set schedules, employer-supplied equipment and exclusivity clauses. Washington also applies its own test, which can reach a different answer than the IRS does on identical facts.

Where to look next

1099WORK is a marketplace built for 1099 engagements specifically: companies post a defined scope, software developers keep one verified profile, and agreements, onboarding and payment happen in the same place. It launched as 1099REPS for independent medical sales reps and now covers the wider 1099 economy, Seattle included.