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Development Engineer
Actalent
Warsaw, IN
- $45 to $55 USD / hour
Job Title: Development EngineerJob DescriptionThe Development Engineer leads complex sustaining engineering projects across multiple products and sites, providing technical leadership and…
Added just now
Paper Mill Operations Leader
JDI
Macon, GA
…key performance indicators to the crews. Support capability development and provide feedback for operating teams. Lead teams through trouble-shooting exercises leading to process stability…
Added 1 min ago
Senior Pre-Sales Infrastructure/Network Design Engineer
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AI Design Tools: Experience using AI tools in design workflows, such as Windsurf or similar AI-assisted development and design tools.
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Senior Fluids and Propulsion Engineer – Lunar Permanence
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United States
The position will work under a senior engineer within the Gas and Thrusters (G&T) team on our Transfer Stage Vehicle. You will be responsible for design of the components and sub-assembly…
Added 4 mins ago
AI Enablement Engineer
Revalize
Remote, United States
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Added 6 mins ago
Sr. Product Manager
Safe-Guard Products International LLC
Atlanta, GA
We are seeking a Senior Product Manager to own and drive the strategy, roadmap, and execution of our Rating Engine - the core system that powers how we price and rate risk across our…
Added 10 mins ago
Software Engineer Senior (AWS Group)
Pathward, N.A.
Remote, United States
…of a team and is required to perform all duties of software development including design, development, testing, and…
Added 11 mins ago
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iOS Engineer Intern
Match Group
Los Angeles, CA · Palo Alto, CA
- $47 USD / hour
As an iOS Engineer Intern at Tinder, you will partner directly with senior members of the mobile team and be empowered to contribute solutions to the Tinder codebase. We are deeply invested…
Added 11 mins ago
MG
Backend Engineer Intern
Match Group
Palo Alto, CA · Los Angeles, CA
- $47 USD / hour
As a Backend Engineer Intern at Tinder, you will partner directly with senior members of the engineering team and be empowered to contribute solutions to Tinder’s backend system. We are…
Added 11 mins ago
MG
Android Engineer Intern
Match Group
Los Angeles, CA
- $47 USD / hour
As an Android Engineer Intern, you’ll collaborate with senior engineers to design, build, and ship features that impact millions of users. You’ll work within a highly collaborative,…
Added 12 mins ago
Error: The requested job could not be found.
Sargent & Lundy
State, IL
Added 12 mins ago
Senior Performance/Simulation/Application Engineer
Caterpillar, Inc.
Mossville, IL
The Aftertreatment & Exhaust Systems (AT&ES) organization is seeking a Senior Performance, Simulation, and Application Engineer to provide technical leadership across simulation, controls…
Added 12 mins ago
Senior Power Electronics Performance & Application Engineer
Caterpillar, Inc.
Mossville, IL
The Senior Performance / Simulation / Application Engineer will provide technical leadership for the analysis, simulation, application, and electrical integration of Medium Voltage Power…
Added 12 mins ago
Senior Embedded Product Analytics Engineer
Caterpillar, Inc.
Mossville, IL
As a Senior Embedded Product Analytics Engineer , you will transform product and engineering data into actionable insights that support New Product Introduction (NPI) , Continuous Product…
Added 13 mins ago
Production Team Lead
ITW
Carol Stream, IL
Coordinate engineering release and technical readiness with the Engineering Team Leader and material availability with the Senior Buyer before confirming production plans.
Added 13 mins ago
Director, Full Stack Engineer
Capital One
Riverwoods, IL
5+ years of experience mentoring senior engineers and driving professional development within technical teams
Added 13 mins ago
Transformation Project Engineering Lead - API
AbbVie
North Chicago, IL
…and accomplishments. Significant contribution to product or process development or improvement through creative application…
Added 13 mins ago
Associate Software Engineer
Highmark Health
Springfield, IL
This job is an integral member of an agile software engineer team responsible for building scalable software applications across all digital channels to serve our customers. Responsible for…
Added 13 mins ago
Director - Customer Response Engineering
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Springfield, IL
Deep technical skill with an AI-first mindset. You can read a crash dump, a process trace, or a packet capture and argue root cause with senior engineers. Your first move on a hard problem…
Added 13 mins ago
Senior Telecom Engineer
Maximus
Springfield, IL
Maximus is seeking an experienced Senior Telecom Engineer to lead the design, implementation, and optimization of Genesys Cloud solutions. This role is responsible for executing large-scale…
Added 13 mins ago
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Senior Data Engineer - Amex Ads, Offers, and Dining Technology
American Express
Chicago, IL
- $123,000 to $215,250 USD / year
…prioritizes data governance. It employs a ground-breaking focus with development responsibilities for customer-facing capabilities that deepen and expand digital engagement, as well as core…
Added 13 mins ago
Senior Civil/Structural Engineer
Jacobs
Chicago, IL
…projects. Here’s what you’ll need: We are seeking an innovative Senior Structural Engineer to help us deliver electrical transmission and generation projects in North America for utilities…
Added 13 mins ago
Senior Geothermal Consultant Job Details | Black & Veatch Family of Companies
Black & Veatch
Chicago, IL
With flexible ways of working and meaningful development opportunities, you’ll build a career you can be proud to stand behind.
Added 14 mins ago
Senior Lead Engineer
PwC
Chicago, IL · Rosemont, IL
As a Senior Lead Engineer you will lead custom application development and testing efforts that help clients turn business needs into scalable software solutions across cloud-native and…
Added 15 mins ago
Senior Security Software Engineer/Developer
About Us
United States
We are looking for a Senior Security Software Engineer / Developer to work directly with our software and product engineering teams to design, build, test, release, and maintain well…

Horizon3

Senior Software Engineer, Pentest Experience

Remote, United States

Base salary range: $200,000 - $235,000.

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Job details

Pay: Base salary range: $200,000 - $235,000.
Experience: 6+ years of professional software engineering experience.
Posting language: English
Posted: Nov 4, 2026

Original job description

Get to Know Us

Horizon3.ai is a fast-growing, remote cybersecurity company dedicated to the mission of enabling organizations to proactively find, fix and verify exploitable attack vectors before criminals exploit them. Our flagship product, the NodeZeroTM platform, delivers production-safe autonomous pentests and other key assessment operations that scale across the largest internal, external, cloud, and hybrid cloud environments. NodeZero has been adopted by organizations of all sizes, from small educational institutions to government agencies and Global 100 enterprises. It is used by IT Ops/SecOps teams, consulting pentesters, and MSSPs and MSPs.

We are a fusion of former U.S. Special Operations cyber operators, startup engineers & operators, and formerly frustrated cybersecurity practitioners. We're committed to helping solve our common security problems: ineffective security tools and false positives, resulting in alert fatigue, blind spots, "checkbox” security culture, cybersecurity skills shortage, and the long lead time and expense of hiring outside consultants. Collectively, we are a team of learn it alls, committed to a culture of respect, collaboration, ownership, and results.

What You’ll Do

We are hiring a Senior Software Engineer to join our team and help build product experiences that enable customers to understand, prioritize, and act on risk in their environments. This role is for a strong senior engineer who can own meaningful product work end-to-end, partnering closely with Product, Design, and peer engineers to deliver outstanding customer experiences.

The right candidate will be comfortable moving between backend services and modern frontend application development. This role will be approximately 80% backend focused and 20% frontend focused. You should be able to scope and drive work independently, proactively identify risks and tradeoffs, and help raise the bar for the engineers through strong execution, code reviews, and collaborative problem solving.

What You’ll Be Responsible For

Building and shipping world-class product capabilities spanning backend services, APIs, and modern web application stacks.
Own moderate-to-large projects end-to-end, including scoping, technical design, implementation, rollout, and iteration.
Help implement user-facing experiences that are clear, maintainable, performant, and aligned with product requirements and design direction.
Partner closely with Product, Design, and adjacent engineering teams to deliver cross-functional initiatives.
Proactively identify and resolve technical risks, blockers, and mis-scoped work before they become larger delivery issues.
Communicate technical topics clearly to both technical and non-technical audiences, including tradeoffs, delivery risks, and implementation choices.
Contribute to architectural and design discussions with a strong sense for maintainability, operability, and long-term team productivity.
Write high-quality code, tests, and technical documentation, and provide strong code reviews that improve the team’s overall output.
Support and mentor less experienced engineers through thoughtful feedback, onboarding support, and day-to-day collaboration.
Help improve engineering quality, team execution, and the product experience through a strong sense of ownership and continuous improvement.

What You’ll Bring

Strong professional experience building and operating production software across the full stack of application development.
Ability to independently drive substantial work from requirements gathering through delivery, while coordinating effectively with cross-functional stakeholders.
Strong written and verbal communication skills, including the ability to explain technical decisions and tradeoffs clearly.
A track record of strong engineering execution, sound technical judgment, and pragmatic problem solving under ambiguity.
Product-minded thinking and a focus on building experiences that improve customer outcomes.
Comfort working across multiple workstreams and balancing competing priorities with clarity and ownership.

Required Education/ Experience

Bachelor’s degree in Computer Science, Computer Engineering, or a related field, or equivalent practical experience.
6+ years of professional software engineering experience.
Experience building distributed backend services using at least one modern language, such as Python, Go, Rust, Java, TypeScript, or similar.
Experience building backend services on a cloud platform (AWS, GCP, or Azure), and familiarity with Docker and containerized applications.
Designing and operating APIs, services, and asynchronous or event-driven systems.
Experience working with SQL base relational databases in production.
Data modeling and persistence layers for product-grade backend systems.
Observability, reliability, and operational best practices for production services.
Frontend development using modern JavaScript/TypeScript in frameworks such as React, Angular, or similar.

Preferred Education/ Experience

You don’t need all of these, but experience in some of the following will help you be successful quickly:

Experience with PostgreSQL and performance tuning for large datasets.
Experience with graph databases such as Neo4j or interest in learning them.
Experience building or consuming GraphQL backends.
Experience with ETL pipelines and data processing tools (e.g., Airflow-like frameworks, custom ETL jobs, or similar).
Experience building products or platforms in vulnerability management, exposure management, security telemetry, or related cybersecurity domains
Experience with scoring or recommendation algorithms and data-intensive products
Experience partnering closely with product managers to define and sequence an MVP without painting the team into a corner.
A track record of shaping technical direction more broadly across an organization, with influence extending beyond a single team or domain.

Travel Required

We are a fully remote company, and this job may require up to 10% of travel to be successful. We meet as a team for project kicks offs and as a company annually. These in-person meetings are crucial to building a product, team, and culture we all can be proud of.

Compensation and Values

At Horizon3, we believe that our people are our greatest asset, and our compensation philosophy reflects this core value. We are committed to fostering an environment where all employees feel valued, respected, and rewarded for their contributions. Our compensation structure is designed to be fair, competitive, and transparent, ensuring that every team member is recognized and compensated equitably across roles, levels, and locations.

In accordance with various State’s transparency regulations, we provide the following salary range information for this position:

Base salary range: $200,000 - $235,000. The exact salary will be determined based on the selected candidate’s location, qualifications, experience, and relevant skills.
Additional compensation: All full-time roles are eligible for an equity package in the form of stock options.

Perks of Horizon3 http://Horizon3.ai

Inclusive Team: We value diversity and promote an inclusive culture where everyone can thrive.
Growth Opportunities: Be part of a dynamic and growing team with numerous career development opportunities.
Innovative Culture: Work in a collaborative environment that encourages creativity and out-of-the-box thinking.
Hybrid & Remote Work: We embrace a mix of remote and hybrid work models depending on role and location.
Competitive Compensation: We offer competitive salary, equity and benefits. Our benefits include health, vision & dental insurance for you and your family, a flexible vacation policy, and generous parental leave.

You Belong Here

Horizon3 is not just an equal opportunity employer - we are a community that values diversity, equity, and inclusion as fundamental principles of our culture and success. We are dedicated to fostering a workplace where everyone feels welcome and respected, regardless of race, color, religion, sex, national origin, age, disability, veteran status, sexual orientation, gender identity or expression, genetic information, marital status, hair length or any other legally protected status by law.

Our commitment to diversity and inclusion means we strive to attract, develop, and retain a workforce that reflects the varied communities we serve. We believe that diverse perspectives drive innovation and strengthen our ability to create cutting-edge cybersecurity solutions. At Horizon3, every team member is valued and supported in an environment that encourages personal and professional growth.

We welcome candidates from all backgrounds and experiences, and we encourage all qualified individuals to apply. Come be a part of Horizon3, where your unique contributions are recognized, and your potential is limitless.

Other Duties

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee. Duties, responsibilities, and activities may change at any time with or without notice.

Application Note

In any materials you submit, you may redact or remove age-identifying information such as age, date of birth, or dates of school attendance or graduation. You will not be penalized for redacting or removing this information.

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More about this job

Skills

Cybersecurity
Work independently
Problem solving
Product comprehension
Documentation
Onboarding
Collaboration
Process improvement
Industrial software
Requirements gathering
Communication skills
Computer science
Computer engineering
Modern languages
Python
Go
Rust
Oracle Java
TypeScript
AWS
Google Cloud
Microsoft Azure
Docker
SQL
Data modelling
Front-end development
JavaScript
React
PostgreSQL
Neo4j
GraphQL
Data engineering
Process data
Apache Airflow
Painting

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