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Added 3 mins ago
CT
Software Reverse Engineer - FUTURE NEED
Cipher Tech Solutions
Vienna, VA
- $48.08 to $96.15 USD / hour
Regardless of whether you are applying to a software developer or reverse engineer position, if your application is approved, we will test you on both skills as part of our hiring process.…
Added 3 mins ago
CT
Embedded Reverse Engineer: All Levels - FUTURE NEED
Cipher Tech Solutions
Vienna, VA
- $48.08 to $96.15 USD / hour
Must have experience with various programming and scripting languages (e.g., C, C++, Assembly, Python, and Bash) to be used in embedded device interaction and prototyping
Added 5 mins ago
Senior Cloud Developer
Hewlett Packard Enterprise
San Jose, CA
Brings technical thinking to break down complex data and to engineer new ideas and methods for solving, prototyping, designing, and implementing cloud-based solutions.
Added 5 mins ago
Lead Escalation Engineer (San Jose, CA)
Hewlett Packard Enterprise
San Jose, CA
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Added 7 mins ago
Operational Technology Engineer
Siemens Energy
Richland, MS
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Added 7 mins ago
AI /ML Solutions Engineer
Siemens Energy
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…MS. is seeking an experienced, self-driven AI /ML Solutions Engineer. As a member of the Operations team the AI Solutions Engineer is responsible for designing, building, and implementing…
Added 7 mins ago
AI /ML Solutions Engineer
Siemens Energy
Richland, MS
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Added 7 mins ago
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Added 7 mins ago
Capital One Shopping Tech, Full - stack Engineer 5 (Remote - Eligible)
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Added 8 mins ago
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Added 8 mins ago
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Manager, Harness Engineer 139525
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Added 8 mins ago
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Senior Software Engineer
Akamai Technologies, Inc.
Jackson, MS
- $121,400 to $218,600 USD / year
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Added 8 mins ago
Sr. Platform Engineer - Jfrog Expert - Remote US
SitusAMC
Jackson, MS
…as EC2, EKS, AWS Lamda functions, API Gateway, and RDS. The Engineer is expected to provide strategy and implement enterprise-scale service mesh and sidecar architectures with a focus on…
Added 8 mins ago
Security Engineer - Applied AI
Meta
Jackson, MS
Meta is seeking Security Engineers to join our Applied Artificial Intelligence (AAI) organization. As a Security Engineer in AAI, you will apply deep domain expertise to solve hard,…
Added 8 mins ago
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Data Scientist 3
Pacific Northwest National Laboratory
Jackson, MS
- $140,200 USD / year
PNNL’s Environmental Subsurface Science Group is seeking a mid-level scientist or engineer with expertise developing PFLOTRAN to lead and contribute to projects modeling subsurface reactive…
Added 8 mins ago
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Data Engineer
Eliassen Group
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- $50 to $57 USD / hour
Our client seeks a Data Engineer to design and implement high-performance data pipelines at scale. The role will focus on building reliable ingestion and transformation processes, enforcing…
Added 9 mins ago
Senior Systems Engineer
Voyager Technologies, Inc.
San Diego, CA
The Senior Systems Engineer is responsible for planning, leading and conducting system requirements development, system design, system integration, qualification, testing and oversight of…
Added 15 mins ago
Databricks Engineer
Perficient
TOWN AND COUNTRY, MO
We currently have a career opportunity for a Databricks Data Engineer to join our AI Data Platforms-Data & Analytics-Delivery Team
Added 17 mins ago
Software Engineer, Data & Analytics Platform
Bayesian Health, Inc.
Remote, United States
- We’re looking for a software engineer to join the team to build and scale our data and analytical platform that tells us and our clients how our clinical AI products are performing in…
Added 18 mins ago
Software Engineer, Color, RIP & Imaging
fieryllc
Fremont, CA
We are seeking a talented Software Engineer – Color, RIP and Imaging to develop next-generation image processing algorithms, color management pipelines, and visual computing software. The…
Added 22 mins ago
Databricks Engineer
Perficient
United States
We currently have a career opportunity for a Databricks Data Engineer to join our AI Data Platforms-Data & Analytics-Delivery Team
Added 26 mins ago
Data Automation QA Engineer
ManpowerGroup
Fort Mill, SC
We are seeking a skilled Data Automation Engineer with expertise in Python automation PyTest automation framework development database testing and ETL validation The ideal candidate will…
Added 27 mins ago
Lead Engineer - Mechanical Component & Analysis
GE Vernova
Greenville, SC
As a Lead Mechanical Engineer, you will play a pivotal role in the design, analysis, and optimization of components across our gas power portfolio. You will collaborate with…
Added 27 mins ago
GE Vernova AI Engineer
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As an entry-level AI Engineer, you will help design, build, integrate and operate AI-enabled applications for engineering and industrial use cases. You will work across software, machine…

Liftoff

Senior Security Engineer, Offensive Security

Remote, United States

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Job details

Experience: 5+ years of relevant security engineering experience, including substantial hands-on penetration testing of applications and infrastructure.
Posting language: English
Posted: Oct 28, 2026

Original job description

Liftoff is a leading AI-powered performance marketing platform for the mobile app economy. Our end-to-end technology stack helps app marketers acquire and retain high-value users, while enabling publishers to maximize revenue across programmatic and direct demand.

Liftoff’s solutions, including Accelerate, Direct, Monetize, Intelligence, and Vungle Exchange, support over 6,600 mobile businesses across 74 countries in sectors such as gaming, social, finance, ecommerce, and entertainment. Founded in 2012 and headquartered in Redwood City, CA, Liftoff has a diverse, global presence.

About Liftoff Security Team

The Liftoff Security team protects Liftoff's customers, users, and employees. We architect Liftoff's security posture, build the tools and systems that defend it, and partner with engineering teams as they ship new products and features. Our work spans the entire stack - infrastructure, web, mobile, and IT - and we approach security from a software engineering standpoint, scaling our impact through automation and well-designed tools. As our Senior Security Engineer, Offensive Security, you will own internal offensive testing and lead the move from point-in-time penetration tests to continuous, AI-assisted testing. You will independently plan assessments, safely validate vulnerabilities, work with engineering teams through remediation and retesting, and build sustained knowledge of our source code and systems. You will contribute across application, cloud, and infrastructure security, support Accelerate and MX as priorities change, and share the team's on-call and incident-response work.

Responsibilities

Independently plan and execute internal penetration tests across applications, APIs, cloud infrastructure, and corporate systems; prioritize assessments by risk and business impact.
Define testing scope and rules of engagement with system owners, assess production risk, and choose safe methods for validating vulnerabilities.
Combine hands-on testing with source-code review and architectural analysis to find vulnerabilities and demonstrate realistic attack paths.
Partner with engineering teams to explain findings, agree on practical fixes, track remediation, and retest to confirm the risk is resolved.
Maintain knowledge of Liftoff’s systems and attack surface, revisit high-risk attack paths as systems change, and turn confirmed findings into repeatable tests.
Build testing tools and workflows that combine hands-on assessments with ongoing automated testing and remediation validation.
Make security testing self-service where practical through reusable tests, documented assessment and retesting workflows, and clear remediation guidance.
Support the annual third-party penetration test for independent validation and customer and audit requirements; coordinate scope and follow findings through remediation.
Lead adoption of AI-assisted offensive security tooling: evaluate platforms and build workflows for code analysis, test generation, and finding triage; measure coverage, accuracy, and effort saved.
Partner with Detection & Response to turn validated attack paths and offensive findings into detection improvements and incident-response exercises.
Work across application, cloud, and infrastructure security as priorities change, including Accelerate and MX, and share the team’s on-call and incident-response rotation, including occasional off-hours response and post-incident follow-up.

Minimum qualifications

5+ years of relevant security engineering experience, including substantial hands-on penetration testing of applications and infrastructure.
Excellent judgment in prioritizing testing by risk, assessing production impact, and safely validating exploits without unnecessary disruption.
Experience independently owning assessments and partnering with engineering teams from initial findings through remediation and retesting.
Write production-quality code for security tools and automation, review pull requests, and navigate large, unfamiliar codebases. Develop safe proof-of-concept code and independently validate AI-generated code and findings.
Strong understanding of application and API security, authentication and authorization, network security, and common vulnerability classes.
Hands-on experience assessing cloud and infrastructure security, including identity and access controls, configuration, and attack paths.
Ability to quickly understand complex systems and architecture and contribute across application, cloud, and infrastructure security.
Practical software engineering habits: testing, observability, version control, peer code review, continuous integration, and blameless postmortems.
Strong technical writing: clear assessment plans, proposals, reproducible findings, runbooks, and post-incident reviews that support engineering decisions. Explain exploitability and business impact clearly in writing and conversation.
Willingness to share the security team’s on-call and incident-response responsibilities, including occasional off-hours response.

Desirable qualifications

Experience with Go, Python, Clojure, or JavaScript; ability to work across languages matters more than a specific language.
Experience building AI-assisted security testing workflows and measuring the accuracy and usefulness of their results.
Experience securing large-scale cloud systems, mobile advertising, or other high-volume SaaS environments.

Why This Role is Exciting

Ownership & Impact: Build and own our in-house offensive security capability, from selecting assessments to confirming fixes.
Broad Attack Surface: Test applications, APIs, cloud infrastructure, and corporate systems with access to source code and engineering context.
Engineering Partnership: Work with teams that value security and stay involved through remediation and retesting.
Room to Grow: Move from point-in-time penetration tests to continuous testing and lead adoption of AI-assisted offensive security tools.

Hands-On Technical Work: Investigate complex systems, validate vulnerabilities safely, and build tools that make testing more effective.

Compensation:

The following are our base salary ranges for this role:

SF Bay Area, Los Angeles/Orange County, NYC, Seattle: $200,000 - $250,000 plus bonus
All other cities and towns in our approved states: $184,000 - $220,000 plus bonus

We use Covey as part of our hiring and/or promotional process for jobs in NYC and certain features may qualify it as an AEDT. As part of the evaluation process, we provide Covey with job requirements and candidate-submitted applications. We began using Covey Scout for Inbound on January 22, 2024.

Please see the independent bias audit report covering our use of Covey here. Liftoff offers a fast-paced, collaborative, and innovative work environment where employees are empowered to grow and make an impact. We’re shaping the future of the mobile app ecosystem - join us and help accelerate what’s next.

Liftoff’s compensation strategy includes competitive salaries, equity, and benefits designed to support employee well-being and performance. We benchmark compensation based on role, level, and location to ensure fairness and market alignment. Benefits may include medical coverage, wellness stipends, and additional perks based on your country of residence.

Liftoff is an equal opportunity employer. We are committed to creating an inclusive environment for all employees and applicants regardless of race, ethnicity, national origin, age, marital status, disability, sexual orientation, gender identity, religion, veteran status, or any other characteristic protected by applicable law.

Agency and Third Party Recruiter Notice:

Liftoff does not accept unsolicited resumes from individual recruiters or third-party recruiting agencies in response to job postings. No fee will be paid to third parties who submit unsolicited candidates directly to our hiring managers or Recruiting Team. All candidates must be submitted via our Applicant Tracking System by approved Liftoff vendors who have been expressly requested to make a submission by our Recruiting Team for a specific job opening. No placement fees will be paid to any firm unless such a request has been made by the Liftoff Recruiting Team and such a candidate was submitted to the Liftoff Recruiting Team via our Applicant Tracking System.

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More about this job

Skills

Penetration testing
Prioritization
CI/CD
Technical writing
Incident response
Go
Python
JavaScript

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