Security Engineer — Fastly Salary Negotiation Guide

Negotiation DNA: Security Engineers at Fastly protect the edge cloud platform and build Fastly's security products — DDoS mitigation, WAF (next-gen WAF from Signal Sciences acquisition), bot management, and TLS termination at the edge.

Compensation Benchmarks (2026)

Level	San Francisco (USD)	Remote US (USD)
Mid (L3-L4)	$158,000–$218,000	$143,000–$203,000
Senior (L5)	$215,000–$290,000	$200,000–$273,000
Staff+ (L6+)	$285,000–$368,000	$268,000–$348,000

Total compensation includes base salary, FSLY RSUs, and performance bonus (10%).

Lever 1: Edge Security Products — "Fastly's security products (next-gen WAF, DDoS, bot management) are key revenue drivers. I build and improve these products."

Lever 2: Signal Sciences Heritage — "Fastly acquired Signal Sciences to build its next-gen WAF. I bring expertise that extends this security capability."

Lever 3: Platform Security — "Securing the edge platform — multi-tenant isolation, TLS, Compute@Edge sandboxing — requires specialized expertise."

Lever 4: Security Revenue — "Security products drive significant Fastly revenue. My contributions have direct revenue impact."

Negotiate Up Strategy: Open at $178,000 base with FSLY RSUs valued at $55K-$78K/year. Accept-at floor: $238,000 total comp.

Evidence & Sources

• Fastly SEC filings — ~$4B market cap, 2025–2026
• Fastly security products (WAF, DDoS, bot management) — 2025–2026
• Levels.fyi Fastly 2025–2026 compensation data
• Glassdoor Fastly salary data 2025–2026