IT and R&D Staff Security Engineer Warsaw, Masovian Voivodeship, Poland

Rtb House; Poland; On-site; PLN 260,000 - 360,000; Full time

Benefits offered by this job

Fully remote

Flexible schedule

Cutting-edge technology

Job summary

RTB House, a leading adtech company, is seeking a Staff Security Engineer to strengthen the security of systems, infrastructure, and development practices. You will drive security architecture across multiple teams, collaborate with SOC, and set standards to improve defenses and enable secure-by-default engineering.

You will influence across engineering, platform, DevOps, and cloud environments, bridging security operations and product delivery with practical, scalable solutions.

Qualifications

• 8+ years of experience in security engineering or closely related roles.
• Hands-on security engineering for production environments.
• Experience with large-scale distributed systems and high throughput.
• Polish and English language must be at least B2/C1.
• Experience security architecture reviews and threat modeling.
• Strong understanding of application, infrastructure and network security.

Responsibilities

• Identify systemic security risks across applications, on-prem infrastructure, cloud environments, internal platforms, and SDLC.
• Perform security architecture reviews for existing and new systems.
• Collaborate with engineering teams to address security weaknesses early in development lifecycle.
• Partner with SOC to improve detection capabilities and translate findings into controls and architecture.
• Design and implement reusable security controls, tools, automation, and services.
• Define and evolve technical security standards, guidelines, reference architectures, and best practices.
• Review complex designs and provide actionable security recommendations without blocking engineering.

Skills

Security engineering

Security architecture

Threat modeling

Cloud & on-prem

Linux & containers

Kubernetes

Python/Go/Java/C++

English proficiency

Tools

GitHub

Gerrit

GitHub Actions

Jenkins

Job description

RTB House is a next-generation performance demand-side platform (DSP) that uses proprietary Deep Learning AI algorithms to help brands grow. The company is the market leader in driving performance using Deep Learning across the entire purchase funnel.

Founded in 2012, and now operating in 90+ markets, RTB House has always been private-by-design. It embraces first-party advertising and a relentless approach to innovation. RTB House offers end-to-end Deep Learning-powered AdTech products and solutions to maximize conversion, drive new customer acquisition, create engagement, and fuel long-term demand for a global base of clients.

About the role

As a Staff Security Engineer, you will play a key technical role in improving the security of RTB House systems, infrastructure, and software development practices.

You will work across engineering teams, including Software Engineering, Platform, Infrastructure, DevOps, Cloud, and our Security Operations Center. Your goal will be to identify systemic security risks, design practical solutions, and help engineering teams build secure systems by default.

This is a senior individual contributor role with broad technical influence, reporting directly to the VP of Engineering. You will not be limited to operating security tools or responding to individual vulnerabilities. You will look at security across the organization, identify areas where we can improve, define technical security standards and architecture, and work directly with engineering teams to implement them.

You will also act as a bridge between Security Operations and Engineering. Insights from incidents, vulnerabilities, threat intelligence, and security assessments should result in concrete improvements to architecture, tooling, development practices, and technical controls.

We are looking for someone who is comfortable going deep technically while also being able to influence engineering decisions across multiple teams.

You Will:

• Identify systemic security risks across applications, on-prem infrastructure, cloud environments, internal platforms, and software development processes.
• Perform security architecture reviews for existing and new systems.
• Work directly with engineering teams to identify security weaknesses early in the software development lifecycle and design practical ways to address them.
• Partner with our SOC to improve detection capabilities, analyze attack patterns and incidents, and translate findings into better detection rules, security controls, and long term architectural improvements.
• Design and help implement security controls, tools, automation, and services that can be reused across engineering teams.
• Define and evolve technical security standards, engineering guidelines, reference architectures, and security best practices.
• Review complex technical designs and provide actionable security recommendations without unnecessarily blocking engineering teams.

Desired Experience:

• 8+ years of professional experience in security engineering, software engineering, infrastructure security, product security, or closely related technical roles.
• Strong hands-on experience in security engineering and designing security controls for production environments.
• Experience with large scale distributed systems and high throughput environments.
• Polish and English language is a must (min.B2/C1)
• Experience performing security architecture reviews, threat modeling, technical security assessments, or similar security design activities.
• Strong understanding of application security, infrastructure security, network security, authentication, authorization, and common attack techniques.
• Experience securing cloud and on premise environments.
• Good understanding of Linux, containers, Kubernetes, networking, and modern distributed systems.
• Programming or scripting experience in at least one general purpose language such as Python, Go, Java, C++, or similar.

Selected Technologies:

• Google Cloud Platform & On-Prem solutions
• GitHub, Gerrit
• GitHub Actions, Jenkins

We Offer:

• Cutting-edge Technology: Engage with the latest technologies on large-scale, dynamic projects
• Wellbeing: extremely flexible cooperation conditions - you work when it is convenient for you and devote as much time as you can; you can work fully remotely
• Purpose-Driven Work: being at the heart of the system, your growing knowledge and competencies will be used in practical applications directly connected to business results