Horizon3 logo
Horizon3 logo
Horizon3
horizon3.ai
horizon3.ai • Chicago • Amsterdam • San Francisco • Las Vegas • Seattle • 1001-5000 employees
Chicago • Amsterdam • San Francisco • Las Vegas • Seattle • 1001-5000 employees
Actively hiring
Vulnerability Management
Cybersecurity AI
Penetration Testing
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What jobs is Horizon3 hiring for right now?

As of Sep 10, 2026, Horizon3 has 25 open jobs on Alion. 21 of them state a salary (84%). They are posted in 5 cities. 25 allow remote or hybrid work.

Source: Alion Coverage: open vacancies from the employer's own careers board Sep 9, 2026
Open jobs
25
With salary
21 (84%)
Cities
5
Posted in 30 days
8
Median age
51 days

What Horizon3 posted in the last two weeks

Posted in 14 days
6
Busiest day
4 Aug 28, 2026
Days with postings
2 / 14
Aug 27, 2026: 2 posted Aug 28, 2026: 4 posted Aug 29, 2026: 0 posted Aug 30, 2026: 0 posted Aug 31, 2026: 0 posted Sep 1, 2026: 0 posted Sep 2, 2026: 0 posted Sep 3, 2026: 0 posted Sep 4, 2026: 0 posted Sep 5, 2026: 0 posted Sep 6, 2026: 0 posted Sep 7, 2026: 0 posted Sep 8, 2026: 0 posted Sep 9, 2026: 0 posted
Aug 27, 2026 weekend Sep 9, 2026

Which roles Horizon3 is hiring for

24 Jobs
Backend 9 37.5%
Security 4 16.7%
Support 3 12.5%
Analytics 3 12.5%
Product 2 8.3%
Other roles 3 12.5%

Where Horizon3 is hiring

Horizon3 hires from 7 offices across 3 countries, holding 40 of its open vacancies between them.

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Headquarters Builds here Office with open vacancies Tap a pin for the office

How the work at Horizon3 is set up

Work format
Remote 19 76%
Remote/Hybrid 6 24%
Level
Senior 12 50%
Staff+ 5 21%
Lead 3 13%
Middle 2 8%
Junior 2 8%
Employment
Full-Time 25 100%

Salaries in Horizon3 vacancies

21 of 25 vacancies state a salary (84%). The range below is built from those 21 stated figures only, never from an estimate.

Lower quartile
$208k
Median
$235k
Upper quartile
$265k
$140k$273k

Open vacancies at Horizon3

$115k – $130k per year • Remote/Hybrid • Full-Time • 2+ years exp • Chicago
Okta
Management
Slack
Jira
Google Workspace
Apply
$128k – $140k per year • Remote/Hybrid • Full-Time • 2+ years exp • San Francisco
Okta
Management
Slack
Jira
Google Workspace
Apply
$200k – $235k per year • Equity • Remote • Full-Time • 4+ years exp • Bachelor's Degree
Python
Go
SQL
PostgreSQL
Neo4j
Apache Kafka
AI/ML
Flink
DevOps
OpenTelemetry
Datadog
AWS
Docker
Kubernetes
Platform Engineering
Amazon Kinesis
Apply
≈ $73k – $174k per year (Estimated) • Equity • Remote/Hybrid • Full-Time • 5+ years exp • Bachelor's Degree • Amsterdam
Python
JavaScript
SQL
PowerShell
Bash
Terraform
Ansible
GCP
CloudFormation
Datadog
Azure
AWS
Docker
Kubernetes
Cybersecurity
Wireshark
Tcpdump
SOC 2
GDPR
Apply
$200k – $270k per year • Remote • Full-Time • 7+ years exp • Bachelor's Degree
Python
Go
Java
TypeScript
SQL
C++
Scala
PostgreSQL
Neo4j
Frontend
GraphQL
DevOps
GCP
Azure
AWS
Docker
Kubernetes
Analytics
ETL/ELT
Apply
$202k – $238k per year • Remote • Full-Time • 7+ years exp • Bachelor's Degree
Python
SQL
Snowflake
Databricks
AI/ML
Spark
Airflow
Dagster
DevOps
AWS
Analytics
Tableau
AWS Glue
Apply
$169k – $208k per year • Remote • Full-Time • 5+ years exp
Python
Neo4j
AI/ML
Fine-tuning
Function Calling
AWS Bedrock
LLM
SFT
GRPO
Structured Outputs
Context Engineering
LLM Evaluation
Tool Use
DevOps
AWS
Apply
$124k – $161k per year • Equity • Remote • Full-Time • 3+ years exp • Bachelor's Degree
Python
PowerShell
Claude
AI Agents
AWS Bedrock
Gemini
LLM
Agentic Workflows
DevOps
Splunk
GCP
Azure
AWS
Cybersecurity
Okta
Microsoft Sentinel
Elastic SIEM
MITRE ATT&CK
IBM QRadar
Tines
Apply
$225k – $265k per year • Equity • Remote/Hybrid • Full-Time • 7+ years exp • Bachelor's Degree • San Francisco • New York
Apply
$117k – $145k per year • Remote • Full-Time • 8+ years exp • Bachelor's Degree
Python
Go
JavaScript
Bash
Terraform
Ansible
GCP
CloudFormation
Datadog
Azure
AWS
Docker
Kubernetes
SLI/SLO/SLA
Cybersecurity
Wireshark
Tcpdump
SOC 2
GDPR
FedRAMP
Apply
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Questions about jobs at Horizon3

Is Horizon3 hiring right now?

Yes. As of Sep 10, 2026, Horizon3 has 25 open jobs on Alion.

What roles does Horizon3 hire for?

Horizon3 is hiring mostly for Backend, Security, Support. The largest group is Backend with 9 open vacancies.

How much does Horizon3 pay?

84% of vacancies at Horizon3 state a salary. Across those 21 stated figures the range runs from $208k to $265k, with a median of $235k.

Where does Horizon3 hire?

Horizon3 has open vacancies in 5 places, most of all in New York, San Francisco, Chicago. It keeps 8 offices with open roles, spread across 3 countries.

Does Horizon3 offer remote work?

Yes. 25 of the open vacancies at Horizon3 allow remote or hybrid work, which is 100% of the board.

How long have Horizon3 vacancies been open?

Half have been on Alion for 51 days or less. 8 vacancies at Horizon3 have been listed for more than 90 days, and postings of that age are far more often out of date.

How do you apply to Horizon3?

Horizon3 accepts applications through Ashby, so the form opens on that system rather than on Alion.

How to cite this page

These figures are published under a free licence. You may reuse them, including commercially, as long as you credit Alion and link back to this page.

Alion, "Horizon3: 25 open jobs", as of Sep 10, 2026. https://alion.io/company/horizon3/jobs

Licence: CC BY-SA 4.0Map: OpenFreeMap, OpenStreetMap. City coordinates: GeoNames (CC BY 4.0)

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