Jobs Private USA → Technology → Cybersecurity → Senior Security Engineer, Detection & Response

Senior Security Engineer, Detection & Response

Flexport · San Francisco, CA · posted 26 days ago

In short: Senior Security Engineer, Detection & Response at Flexport in San Francisco, CA, posted 26 days ago.

By AtiveSite · Published 07/11/2026 · Updated 08/11/2026 · Every figure is linked to its source below.

Flexportemployer

San Francisco, CAlocation

Cybersecuritysub-niche

26 days agoposted

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The job

LIVE Live feed (private-sector employer) Source: The Muse public API · Data: listed 2026-10-13

Employer	Flexport
Location	San Francisco, California
Field	Technology › Cybersecurity
Level	Senior Level
Source category	Software Engineering
Posted	2026-10-13 (26 days ago)
Work arrangement	A remote or flexible location is listed
Pay	Not published in the source listing

Job description

About Flexport:

At Flexport, we believe global trade can move the human race forward. That’s why it’s our mission to make global commerce so easy there will be more of it. We’re shaping the future of a $10T industry with solutions powered by innovative technology and exceptional people. Today, companies of all sizes—from emerging brands to Fortune 500s—use Flexport technology to move more than $19B of merchandise across 112 countries a year.

The recent global supply chain crisis has put Flexport center stage as we continue to play a pivotal role in how goods move around the world. We are proud to have the support of the best investors in the game who believe in our mission, solutions and people. Ready to tackle global challenges that impact business, society, and the environment? Come join us.

What you'll do

There is no MSSP and no tier-1 queue here. Detection & Response engineers own their detections end to end: you write them, you tune them, and your team is paged when they fire. The security team is spread across the globe with a follow-the-sun pager rotation so nobody is paged at 3am local.

The adversaries are real. The business is growing fast and the threat surface is growing with it. Defining the necessary telemetry is part of the job.

Detection engineering

Build and tune detections across endpoint, identity, SaaS, and cloud, treating them as software: version-controlled, peer-reviewed, and shipped through the same CI/CD practices the rest of engineering uses.
Track detection quality as measured quantities: coverage against MITRE ATT&CK, precision, time-to-detect. We don’t build-and-forget here.

Response & automation

Own incident response: triage, contain, remediate, and write the retrospective that turns the incident into a systemic fix.
Build automation that removes toil from investigations, and partner closely with the US-based team so context carries across time zones instead of getting lost at handoff.

Telemetry & partnership

Define telemetry requirements for new systems before they ship, working with infrastructure and product teams to close visibility gaps rather than discovering them during an incident.
Threat hunt proactively across the estate, converting hypotheses into either new detections or documented coverage.

You Should Have

Typically 5–8 years of experience in detection engineering, incident response, or threat hunting, with real hands-on time writing and tuning detections. We care more about what you've built than the exact number.
Proficiency in at least one programming language (Python, Go, or similar) and comfort writing production-grade detection and automation code.
Experience with a modern SIEM or detection pipeline (Panther, Elastic, Splunk, or similar). What matters is that you've shipped and tuned detection logic in production.
Practical incident response experience: you've led or played a major role in triaging and closing out real security incidents.

Nice to have

Experience treating detections as code with CI/CD, peer review, and staged rollout.
Experience defining telemetry contracts for systems before they ship, rather than retrofitting logging after an incident.
A track record of critically evaluating and verifying AI-assisted work - testing, source-checking, validation - rather than trusting agent output by default. If you haven’t already spotted the em dashes in this job description and already thought about where the hiring manager (hi!) has put hands on keyboard and compared that to where they let the LLM watermarks through, you might not be the right person for the job.
Familiarity with cloud-native and Kubernetes telemetry.
Experience with fraud or financial-crime detection patterns.

How we work

We stay closely aligned with teammates on other continents via Slack, video, and async docs.
We have the latest hardware and software, including frontier AI models on day one.
We're agile, but not dogmatic. Teams decide how they work best.

Why this role is special

You own your detections end to end, no MSSP, no tier-1 queue, no handing your work to someone else to triage.
The consequences here are physical, not abstract: a containment decision can stop a customs filing or freight actually moving, which makes the stakes concrete in a way a SaaS control plane rarely is.
You'll inherit a real, established estate with legacy telemetry gaps to close, genuinely underexplored surface area, not a well-mined problem.

#LI-Remote

#LI-VA1

The range displayed on each job posting reflects the minimum and maximum target for new hire salaries for the position across all US locations. Our salary ranges are determined by role, level, and location. Within the range displayed, individual pay is determined by work location and additional factors, including job-related skills, experience, and relevant education and / or training. Base salary is just one part of our total rewards package at Flexport, which also includes bonus, equity, and comprehensive benefit offerings such as medical, dental, and flexible time off. California Pay Range$138,196—$252,000 USDWashington Pay Range$183,272—$229,091 USDColorado Pay Range$138,196—$172,746 USDNew York City Pay Range$183,272—$229,091 USDIllinois Pay Range$138,196—$172,746 USD

Commitment to Equal Opportunity

At Flexport, our ability to fulfill our mission of making global commerce easy and accessible relies on having a diverse, dedicated and engaged workforce. All qualified applicants will receive consideration for employment regardless of race, color, religion, sex, national origin, age, physical and mental disability, health status, marital and family status, sexual orientation, gender identity and expression, military and veteran status, and any other characteristic protected by applicable law.

Global Data Privacy Notice for Job Candidates and Applicants

Depending on your location, the General Data Protection Regulation (GDPR) and California Consumer Privacy Act (CCPA) may regulate the way we manage the data of job applicants. By submitting your application, you are agreeing to our use and processing of your data as required. Please see our Privacy Notice available at www.flexport.com/privacy for additional information.

Explore around this job

Field: Technology Sub-niche: Cybersecurity All jobs at Flexport Jobs in California Jobs in San Francisco, CA San Francisco city guide California state guide San Francisco County economy

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About the role

This is a Senior Level role in the Technology field (Cybersecurity) at Flexport. Senior roles usually expect substantial experience, ownership of results and often the ability to guide others.

We could not match this job title to one occupation in the official wage statistics, so no pay estimate is shown. Pay is not in the source listing; ask the employer for the range and compare in the 240 job niches.

Does the pay work here? (estimate)

Gross salary a year Filing State income tax rate %

Estimate for a wage earner: 2026 federal brackets and standard deduction (IRS), Social Security 6.2% up to $184,500, Medicare 1.45% (+0.9% above $200,000 single / $250,000 married), and a state rate you set; set your own state tax rate. It ignores credits, pre-tax deductions, local taxes and benefits. Sources: IRS: tax year 2026 inflation adjustments · SSA wage base per Federal Register notice 2025-19763.

How to prepare and behave

This is editorial guidance, not information from the employer.

Read the whole description and match your examples to its requirements; use the same words the posting uses where they are true for you.
Research the employer before the interview: what it does, who its customers are and recent news; prepare two or three questions about the work.
Arrive early (or log in early for a video call), dress one step above the daily dress code, and test your camera and audio beforehand.
Answer with short stories: the situation, what you did and the result. Give numbers when you have them and never invent them.
Be honest about gaps; say what you did to learn and how fast you can close them.
Ask about the team, the first 90 days, how success is measured and the schedule; do not open with salary and time off.
When pay comes up, know the market range for the occupation and your lowest acceptable offer before you answer; ask for the full package in writing.
Send a short thank-you message within a day, mentioning one thing you discussed.
The listing mentions a remote or flexible location. Confirm with the employer whether remote work applies to your state: taxes, licensing and benefits can depend on where you live.
Have code, data work or projects you can show, and be ready to think aloud: many technical interviews test how you reason, not only the answer.

Know your rights as a candidate and an employee:

The city

The job is in San Francisco, CA. Below is what the official statistics say about living and working there.

How San Francisco compares. Among the 145 largest places in California, San Francisco is #4 by population, #139 for homeownership (#1 = highest), #20 for remote work (#1 = most), #25 for college degrees (#1 = most). Its county, San Francisco County, is #3 of 58 counties for average pay ($174,103).

The place in numbers

San Francisco has 830,235 residents (ACS 2020–2024), about 2.1% of the population of California. It covers 47 square miles of land, which works out to roughly 17,784 people per square mile. The median age is 40.0, 6% older than the state median (40.0 against 37.9).

Housing

The median gross rent is $2,476 a month (rent plus utilities), 22% above the state median ($2,476 against $2,036). Over a year that is 21.1% of the median household income. US housing guidance treats housing as affordable when it takes 30% of income or less, so the typical household is under that line. The median home value is $1,394,500, which is 9.9 times the median household income ($140,970); a ratio above 5 usually means buying is out of reach without savings or a second income. 38.2% of households own their home, 32% below the state average (38.2% against 55.9%). A low ownership share points to a rental-heavy market with more apartments and shorter stays.

Work and pay

The San Francisco-Oakland-Fremont, CA metropolitan area has 2,373,920 jobs in the BLS wage survey, and the median pay across all occupations is $74,260 a year, 46% above the national median ($74,260 against $50,980). The biggest occupation groups are office and administrative support (226,320 jobs, median $62,120); management (223,100 jobs, median $176,340); business and financial operations (207,030 jobs, median $112,960). The area is most specialised in computer and mathematical (1.9 times) and life, physical, and social science (1.8 times), where the share of workers is well above the national share. The best-paying groups with at least 5,000 jobs are management ($176,340) and computer and mathematical ($167,770). In 2026M09 the unemployment rate of San Francisco County was 4.0%. 69.6% of residents aged 16 and over are in the labour force. The city lies in San Francisco County; its jobs, pay by industry and GDP are on the county page.

Getting around

Among workers, 28.6% drive alone, 18.7% use public transit, 9.3% walk, 31.0% work from home. 21.6% of workers commute 45 minutes or more, 11% above the state average (21.6% against 19.4%). Remote work is more common than in the state as a whole, which widens the set of employers a resident can work for without moving.

People and education

60.3% of adults aged 25 and over hold a bachelor's degree or higher, 63% above the state share (60.3% against 37.1%). 34.0% of residents were born outside the United States, 26% above the state share (34.0% against 27.0%). The poverty rate is 11.2%, 7% below the state rate (11.2% against 12.0%).

Climate

The warmest month is Sep, averaging 59°F (14.9°C), and the coolest is Apr at 53°F (11.6°C). About 515 mm (20 inches) of precipitation falls in a year; Dec is the wettest month (112 mm) and Jul the driest (2 mm). These values come from NASA satellite-based climatology on a grid of about 50 km, so they describe the wider area, not a weather station in the city.

Nearby cities to compare

Closest cities in this guide: Daly City (31 miles, rent 3% higher); Pacifica (31 miles, rent 25% higher); San Bruno (34 miles, rent 12% higher); Millbrae (36 miles, rent 32% higher). Rent differences are against San Francisco; use the Compare tab to put any two cities side by side.

Full guide to San Francisco →California guide All jobs in San Francisco

Official links for San Francisco

These links go to official sources and open in a new window. The first one is the government's or company's own site as listed in Wikidata (property "official website"); check it before relying on it.

Where to live

CITY Official statistics Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year (via Census Reporter) · Data: ACS 2020–2024

Places within 50 miles (straight line) of San Francisco, CA that have a guide, with what living there costs. No pay estimate is shown because the title did not match one occupation.

Sort:

Place ⇅	Distance from the job city ⇅	Median rent ⇅	Median home value ⇅	Median household income ⇅	Commute 45+ min ⇅	Rent as % of occupation pay ⇅	Open jobs there ⇅
San Francisco, CA	0 mi	$2,476	$1,394,500	$140,970	21.6%	n/a	Jobs
Daly City, CA	31 mi	$2,551	$1,115,000	$123,547	19.6%	n/a	—
Pacifica, CA	31 mi	$3,098	$1,249,800	$160,523	15.5%	n/a	—
San Bruno, CA	34 mi	$2,773	$1,207,500	$141,272	12.2%	n/a	—
Millbrae, CA	36 mi	$3,272	$1,934,900	$163,476	21.8%	n/a	—
Brisbane, CA	36 mi	$2,574	$1,232,200	$156,169	29.8%	n/a	—
South San Francisco, CA	36 mi	$2,802	$1,188,800	$136,578	15.2%	n/a	—
Half Moon Bay, CA	37 mi	$2,433	$1,549,500	$157,884	26.7%	n/a	—
Burlingame, CA	38 mi	$2,785	$2,000,001	$174,000	23.1%	n/a	—
Richmond, CA	40 mi	$1,960	$668,200	$95,391	28.8%	n/a	—
San Mateo, CA	41 mi	$3,077	$1,618,700	$153,504	15.8%	n/a	—
Berkeley, CA	41 mi	$2,133	$1,413,900	$108,092	20.8%	n/a	Jobs
Alameda, CA	42 mi	$2,474	$1,235,700	$137,697	27.3%	n/a	Jobs
Belmont, CA	43 mi	$2,875	$2,000,001	$205,297	18.6%	n/a	Jobs
Oakland, CA	44 mi	$1,979	$929,900	$101,600	21.9%	n/a	Jobs
Foster City, CA	44 mi	$3,501	$1,838,200	$199,143	20.6%	n/a	Jobs
San Carlos, CA	45 mi	$2,854	$2,000,001	$237,470	14.9%	n/a	—
Redwood City, CA	47 mi	$2,968	$1,801,700	$157,814	10.2%	n/a	Jobs
San Leandro, CA	48 mi	$2,186	$844,200	$101,420	23.7%	n/a	—
Atherton, CA	49 mi	$3,501	$2,000,001	$250,001	7.0%	n/a	—

Career paths

We could not match this title to one occupation, so here are the other sub-niches in Technology, where your skills may carry over:

Data, analytics and AI (1991) Software engineering (1880) Cloud, IT and infrastructure (504) Product management (412)

Distances

CITY Calculation (straight line) Source: U.S. Census Bureau Gazetteer (coordinates) · Data: 2024

How far San Francisco, CA is from the 20 largest US cities, in straight-line miles (not driving distance). Click a column to sort.

Sort:

From ⇅	Straight-line distance (miles) ⇅	Population of that city ⇅
San Francisco, CA	0 mi	830,235
San Jose, CA	73 mi	990,138
Los Angeles, CA	364 mi	3,857,263
San Diego, CA	475 mi	1,389,526
Phoenix, AZ	678 mi	1,642,323
Seattle, WA	684 mi	754,195
Denver, CO	986 mi	718,877
Oklahoma City, OK	1,420 mi	697,125
Fort Worth, TX	1,484 mi	963,194
Dallas, TX	1,515 mi	1,307,930
San Antonio, TX	1,516 mi	1,479,835
Austin, TX	1,530 mi	979,539
Houston, TX	1,673 mi	2,328,253
Chicago, IL	1,885 mi	2,711,226
Indianapolis, IN	1,979 mi	885,860
Columbus, OH	2,142 mi	914,802
Charlotte, NC	2,332 mi	903,844
Jacksonville, FL	2,403 mi	977,670
Philadelphia, PA	2,550 mi	1,579,706
New York, NY	2,602 mi	8,483,844

Nearby cities with open jobs (within 120 miles)

Sort:

City ⇅	Straight-line distance ⇅	Open jobs ⇅
Alameda, CA	42 mi	15
Belmont, CA	43 mi	2
Redwood City, CA	47 mi	27
Palo Alto, CA	54 mi	24
Sunnyvale, CA	60 mi	12
Fremont, CA	62 mi	2
Pleasanton, CA	63 mi	1
Milpitas, CA	66 mi	2
Campbell, CA	67 mi	7
San Jose, CA	73 mi	661
Capitola, CA	79 mi	1
Sacramento, CA	103 mi	38

The employer

Flexport is the employer in this listing. See all its open jobs here →

We do not hold headcount or revenue for this employer. Check its careers site and, if it is listed on a stock exchange, its public filings (SEC EDGAR search).

What it is like to work at a company (culture, schedules, benefits) is not in the source data, so we do not describe it. Read the description and ask the questions under "How to prepare".

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FAQ

What is the Senior Security Engineer, Detection & Response job at Flexport?

A senior level role in technology (cybersecurity) listed 26 days ago. The full description is on this page and on The Muse.

Where is this job?

San Francisco, CA. A remote or flexible location is listed; confirm with the employer which states are accepted.

How do I apply?

Use the "View this job and apply on The Muse" button. AtiveSite does not receive applications.

How much does it pay?

The listing does not publish pay, and we could not match the title to one official occupation.

What is the cost of living there?

Median rent in San Francisco is $2,476 a month and median household income $140,970 (ACS 2020–2024).

How old is this listing?

It was posted on 2026-10-13 (26 days ago). Jobs older than 90 days are not shown.

Are there similar jobs?

Yes: browse cybersecurity jobs in California.

Sources and terms

Job data: The Muse public API (listing dated 2026-10-13). The job disappears from this site when it disappears from the source.
Wages and projections: BLS OEWS (May 2025) and Employment Projections 2025–35.
City and county figures: Census Bureau ACS 2020–2024, BEA, BLS QCEW and LAUS, NASA POWER climatology; distances from Census Gazetteer coordinates.

AtiveSite is not affiliated with or endorsed by The Muse, the employer or any government agency, and does not process applications. Verify every detail with the employer before acting.

Sources

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