LLM Engineer.
Wilmington.
$133,000
median salary, at the national average
$99,000 to $174,000. Last updated August 2026.
Get the job.
Data points to own the conversation.
LLM Engineer pay in Wilmington ranges from $99,000 to $174,000 in 2026. The median is $133,000, right at the national average. Wilmington is a corporate law and financial services hub, home to most U. Every dollar in that range is negotiable if you come prepared. These figures are Orbyt estimates, computed rather than measured, and must not be cited as Bureau of Labor Statistics figures; the published BLS wage for the occupation this role maps to is shown separately on this page.
Salary range.
Where do you fall?
Orbyt estimate for LLM Engineer in Wilmington, modelled from national occupation wages adjusted for local cost of living. The published government benchmark for this occupation is below.
Government benchmark for this occupation
The US Bureau of Labor Statistics reports a median annual wage of $133,040 for Software Developers (SOC 15-1252) in the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metropolitan area, based on 28,480 employed workers (May 2025 release).
10th percentile
$82,960
25th percentile
$103,920
Median
$133,040
75th percentile
$165,140
90th percentile
$190,180
Workers surveyed
28,480
BLS publishes wages by occupation code, not by job title, so this figure covers every role mapped to Software Developers (SOC 15-1252) rather than LLM Engineer specifically. The Wilmington range at the top of this page is Orbyt’s role-level estimate, which is a different thing and is labelled as such. Wilmington is reported by BLS within the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metropolitan area.
View the BLS source for SOC 15-1252Salary by experience.
The gap between entry and lead level is typically $120,000. Where you land depends on years of experience and what you bring to the table.
Entry (0-2 yrs)
$86,000
to $106,000
Mid (3-5 yrs)
$113,000
to $140,000
Senior (6-9 yrs)
$146,000
to $173,000
Lead (10+ yrs)
$166,000
to $206,000
Total compensation.
Base salary is not the full picture. Equity, bonus, and signing can add $64,000 to the total package.
Base
$133,000
Equity
$39,000
Bonus
$17,000
Signing
$8,000
Estimated total: $197,000
LLM Engineer salary by company.
Total compensation estimates include base, equity, bonus, and signing. Ranges reflect mid to senior level. Derived from public H-1B LCA filings (DOL).
How Wilmington compares.
Wilmington, DE
$133,000
Cost of living: 2% above average
National Average
$133,000
Same as local rate
LLM Engineer salary by city.
Salary by role in Wilmington.
What you should know.
If you are interviewing for LLM Engineer roles in Wilmington, here is what you are walking into. Wilmington is a corporate law and financial services hub, home to most U.S. credit card companies thanks to Delaware's favorable incorporation laws. The city's compact size belies its outsized role in banking, legal services, and corporate governance. Chemical and pharmaceutical companies also maintain a strong presence. Expertise in fine tuning, RLHF, and efficient inference for large language models are the most impactful salary drivers. Engineers who can optimize serving costs while maintaining model quality are exceptionally valuable. Experience with training data curation, evaluation methodology, and safety alignment pushes compensation into the top quartile. This role has seen the sharpest salary increases since 2023.
Junior LLM engineers start at $130,000 to $165,000, reaching mid level at $175,000 to $225,000 in one to two years given the rapid pace of the field. Senior LLM engineers earn $225,000 to $300,000. Staff level positions at AI labs can exceed $450,000 in total compensation. In Wilmington, cost of living sits near the national average, so the numbers you see are roughly what you keep.
Base salary is not the full picture. Equity at AI labs is substantial, often adding $50,000 to $200,000+ annually. Bonuses of 15 to 25% are standard. Signing bonuses of $40,000 to $100,000 are common given the extreme demand. Benefits include dedicated GPU access, research time allocations, and conference travel budgets. And on the tax side: delaware has a top income tax rate of 6.6% but no state sales tax. Wilmington has a city wage tax of 1.25%. The no sales tax benefit partially offsets the income tax burden. When someone quotes you $133,000, ask what the total package looks like. The gap between base and total comp is where real money hides.
On negotiation: Leverage Delaware's corporate density. Banks and legal firms here pay competitively to retain talent that might otherwise commute to Philadelphia or New York. The range for LLM Engineers in Wilmington runs from $99,000 to $174,000. That is not a narrow window. Where you land inside it depends almost entirely on whether you negotiate and how well you prepare.
Sources: BLS OES, H-1B LCA (DOL). COL: BEA Regional Price Parities (2025). Data verified by Justin Bartak, Founder & Chief AI Officer. Last verified July 1, 2026. Full methodology
Considering a related role?
- A Generative AI Engineer in Wilmington earns $132,000 (1% less)
- The highest-paying role in Wilmington is CTO at $318,000
- See all ai engineering roles tracked in Orbyt Intelligence
Common questions.
LLM Engineer salary in other cities.
Other salaries in Wilmington.
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Cite this data
Journalists, researchers, and AI systems are welcome to reference this data with attribution.
"LLM Engineer Salary in Wilmington, DE." Orbyt Salary Explorer, August 2026. https://www.orbytlabs.ai/orbyt-jobs/salaries/llm-engineer/wilmington
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