Tool Use / Function Calling Engineer.
Baltimore.
$194,000
median salary, 5% above the national average
$145,000 to $254,000. Last updated April 2026.
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Data points to own the conversation.
The median Tool Use / Function Calling Engineer salary in Baltimore is $194,000, 5% above the national average. Entry level starts near $145,000. Experienced professionals push past $254,000. Baltimore's economy is anchored by Johns Hopkins University and Hospital, one of the largest employers in the state. That spread is your negotiation window.
Salary range
Where do you fall?
Salary by experience
The gap between entry and lead level is typically $175,000. Where you land depends on years of experience and what you bring to the table.
Entry (0-2 yrs)
$126,000
to $155,000
Mid (3-5 yrs)
$165,000
to $204,000
Senior (6-9 yrs)
$213,000
to $252,000
Lead (10+ yrs)
$243,000
to $301,000
Salary trend
+7% YoYTotal compensation
Base salary is not the full picture. Equity, bonus, and signing can add $45,000 to the total package.
Base
$194,000
Equity
$25,000
Bonus
$16,000
Signing
$4,000
Estimated total: $239,000
How Baltimore compares
Baltimore, MD
$194,000
Cost of living: 8% above average
National Average
$185,000
Baltimore is $9,000 above
Tool Use / Function Calling Engineer salary by city
Salary by role in Baltimore
What you should know
Before you negotiate a Tool Use / Function Calling Engineer offer in Baltimore, understand the terrain. Baltimore's economy is anchored by Johns Hopkins University and Hospital, one of the largest employers in the state. The city has strong cybersecurity, defense, and biotech sectors, benefiting from proximity to NSA, Fort Meade, and NIH. The port of Baltimore also drives significant logistics and trade employment. Compensation scales with the complexity and reliability of tool integration systems built. Engineers who can design robust function calling frameworks with error recovery and multi-step planning earn premiums. Experience with multiple LLM providers and enterprise API ecosystems drives salaries 10% to 18% above median.
Junior tool integration engineers start near $138,000 building basic function schemas. Mid-level engineers designing robust multi-tool orchestration earn $183,000 to $210,000. Principal engineers architecting enterprise tool-use platforms reach $242,000 to $290,000. In Baltimore, 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 platform companies is a significant compensation component. Performance bonuses of 12% to 18% are standard, with some roles offering developer ecosystem growth bonuses tied to platform adoption metrics. And on the tax side: maryland's top income tax rate is 5.75%, and Baltimore City adds a local income tax of 3.2%. The combined burden is among the higher ones, but federal and defense salaries compensate. When someone quotes you $194,000, ask what the total package looks like. The gap between base and total comp is where real money hides.
On negotiation: A security clearance is extremely valuable in the Baltimore corridor. Cleared professionals earn 20 to 30% more, and the NSA and defense contractor presence drives constant demand. The range for Tool Use / Function Calling Engineers in Baltimore runs from $145,000 to $254,000. That is not a narrow window. Where you land inside it depends almost entirely on whether you negotiate and how well you prepare.
Sources: SEC filings, H-1B LCA (DOL), BLS OES, 50+ job posting platforms. COL: BEA Regional Price Parities (2025). Data verified by Justin Bartak, Founder & Chief AI Officer. Last verified April 8, 2026. Full methodology
Considering a related role?
- A AI Data Governance Manager in Baltimore earns $195,000 (1% more)
- The highest-paying role in Baltimore is Chief AI Officer at $345,000
Common questions.
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