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OpenX is an ad tech company that drives optimal value for advertisers through high-scale marketplaces across all screens
The Role
Design, implement, and operate large-scale, highly-available cloud infrastructure on GCP/AWS. Automate infrastructure and deployments, monitor and respond to incidents, tune cluster performance, support releases, and participate in on-call rotation while collaborating with distributed engineering teams.
Summary Generated by Built In
Company at a Glance
OpenX is focused on unleashing the full economic potential of digital media companies. We do this by making digital advertising markets and technologies that are designed to deliver optimal value to publishers and advertisers on every ad served across all screens.
At OpenX, we have built a team that is uniquely experienced in designing and operating high-scale ad marketplaces, and we are constantly on the lookout for thoughtful, creative executors who are as fascinated as we are about finding new ways to apply a blend of market design, technical innovation, operational excellence, and empathetic partner service to the frontiers of digital advertising.
We are a pioneer in cloud computing in Poland. With the recent migration to Google Cloud Platform (GCP) we have the largest infrastructure cloud footprint in Poland. It’s on such a large scale, Google is working to solve our problems.
We are seeking a Senior Cloud SRE (Site Reliability Engineer) that will be primarily responsible for the performance, uptime, and growth of various OpenX systems and services on GCP. Much of your software development focuses on optimizing cloud-native systems, orchestrating cloud infrastructure and eliminating manual work through automation.
Excellent communication skills are crucial in this position so you could successfully interact with globally distributed OpenX teams operating in a 24x7 manner.
We are operating at a scale:
100% Cloud-based (GCP) platform
Over 380 billion Ad requests every day
Over 120 000 CPU daily
Over 140 TB RAM daily
Over 1200 production deployments a month
What we offer:
- Employment contract (22 525 - 25 175 PLN gross/monthly) OR B2B (181 - 202 PLN net/hourly)
- Working with the newest technologies such as Cloud Computing (GCP)
- Challenges at work that are difficult to find anywhere else!
- Solving important problems in a scale
- Joining a company that is growing and scaling
- Flexible working hours & remote work option
Key responsibilites:
- Design, write and deliver software to implement and support large web-scale, highly-performant, highly-available infrastructure on GCP (e.g. Terraform)
- Monitor infrastructure, respond to incidents, correct and improve systems to prevent incidents, and plan capacity
- Support system deployments and product releases
- Tune large-scale clusters for optimal performance and efficiency
- Work closely with engineering, project management, and operational peers to develop innovative technical tools and solutions
- Participation in on-call rotation
What you need to have to be successful:
- At least 5 years of GCP or AWS experience
- Bachelor’s degree in Computer Science, related technical field involving systems engineering, or equivalent practical experience
- Experience with Kubernetes/Docker/Containers
- Experience with CI/CD
- Experience in one of the following: Java, Python, Go, or other
- Experience with current AI tools, especially Claude Code and Codex
- Good English skills
Desirable Qualifications:
- Expertise in designing, analyzing and troubleshooting large-scale distributed systems
- Good understanding of public cloud services and tasks, such as: VPC; load balancing; relational and non-relational datastores (e.g., Google Cloud SQL, Memorystore, AWS RDS); storage (e.g., GCS, AWS S3); monitoring (e.g., GCP Stackdriver, AWS CloudWatch, Prometheus); serverless computing (e.g., GCF, AWS Lambda); and auto-scaling
- Ability to debug and optimize code and automate routine tasks
- Experience with security
Our benefits (on employment contract):
- Annual performance bonus
- Tax-deductible system due to copyright protection: 75%
- Private health care for you and your family (covered by OpenX)
- Private life and travel insurance
- MultiKafeteria program
- Training: access to the LinkedIn learning platform and Tech workshops
- Holiday Allowance
- Pension scheme (PPK from PZU)
- Additional paid day off
- Free parking lot
- Access to peer to peer recognition platform
- Monthly work-from-home allowance and one-time payment when you join us to help you set up your home office
- We celebrate team members' important personal milestones (vouchers, gifts)
OpenX VALUES
Our five company values form a solid bedrock serving to define us as a group and guide the company. Our values remind us that how we do things often matters as much as what we do.
WE ARE ONE
We are one team. There are no exceptions. We are a group of strong and diverse individuals unified by a shared mission. We embrace challenges and win together as a team. We respect and care about our colleagues and cultivate an inclusive culture
WE ARE CUSTOMER CENTRIC
We innovate on behalf of our customers. We understand, respect, and listen carefully to our customers. We build great products to solve our customers’ problems. We manage our customers’ expectations clearly and honestly. We are a trusted partner to all of our customers - we act with integrity at all times. We care.
OPENX IS OURS
We are all owners of OpenX
We all have a voice to improve OpenX
We stake our personal and professional reputations on the excellence of our work
We are not interested in just "doing our jobs"; we take ownership to drive results
WE ARE AN OPEN BOOK
We understand and respect what each of us does. We are eager to teach and share what we know with others, both internally and externally. We are eager to learn from others and we ask questions internally and externally.
WE EVOLVE FAST
We take responsible risks and own and learn from our mistakes. We recognize and repeat success. We actively seek out and provide constructive feedback. We adapt quickly and embrace change. We tackle growth and learning with real urgency. We are endlessly curious.
OpenX TRAITS
Our three traits capture what makes a great team member at OpenX.
HUMBLE
Ideal team players are humble and demonstrate integrity. They put the team's success above their own, share credit generously, and value collective achievements. They are self-assured, open to coaching, and committed to continuous learning.
DRIVEN
Ideal team players are results-driven and motivated. They are curious, always seeking more to do, learn, and take on. As proactive problem-solvers, they take initiative without needing external motivation. They continuously think about the next steps and opportunities for improvement.
SMART
Ideal team players are smart and possess the intellectual acumen to understand the complexities of our organization and industry. They are interpersonally intelligent, good communicators, and exemplify sound judgment in their interactions across the company to foster a collaborative environment.
OpenX is committed to equal employment opportunities.
It is a fundamental principle at OpenX not to discriminate against employees or applicants for employment on any legally-recognized basis including, but not limited to: age, race, creed, color, religion, national origin, sexual orientation, sex, disability, predisposing genetic characteristics, genetic information, military or veteran status, marital status, gender identity/transgender status, pregnancy, childbirth or related medical condition, and other protected characteristic as established by law.
OpenX Applicant Privacy Policy
Applicants can review our Applicant Privacy Policy at any time by visiting the following link: https://www.openx.com/privacy-center/applicant-privacy-policy/.
Effective Date of the Privacy Policy: November 21, 2024
Skills Required
- At least 5 years of AWS/GCP experience
- Bachelor's degree in Computer Science or related field or equivalent practical experience
- Shell scripting
- Experience in one of: Java, Python, or Go
- Good English communication skills
- Expertise in designing, analyzing and troubleshooting large-scale distributed systems
- Understanding of public cloud services (VPC, load balancing, Cloud SQL/RDS, GCS/S3, monitoring)
- Kubernetes, Docker, and container experience
- Ability to debug and optimize code and automate routine tasks
What the Team is Saying
Cassie Nufable
Senior Manager, FP&A
Ben White
Sr Principal Software Engineer
Nathan Rideout-Cadieux
Director, Buyer Development
Cheryl Tan
Director, Account Mgmt Buyer Development
Alexa Ofsanko
Sr. Account Director
Qixuan Yu
Data Scientist II
OpenX Technologies Compensation & Benefits Highlights
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Healthcare Strength — Benefits include competitive medical, dental, and vision coverage with eligibility from day one, plus 100% employer‑paid therapy and life coaching to support mental health. Wellness support is reinforced through ongoing wellbeing stipends.
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Parental & Family Support — The package features 100% paid parental leave for birthing, non‑birthing, and adoptive parents. Additional family‑formation and caregiving support, including fertility benefits and dedicated resources, are highlighted.
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Leave & Time Off Breadth — The company promotes generous time away through time off and extended holidays, with some materials noting unlimited PTO and company‑wide recharge days. Extras like birthday time off further broaden the time‑off offering.
OpenX Technologies Insights
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The Company
What We Do
OpenX is The Intelligent SSP™ (supply-side platform), simplifying advertising for marketers, advertisers, and publishers worldwide. As one of the largest SSPs globally, OpenX combines the industry’s only fully cloud-based infrastructure with leading AI capabilities to make digital advertising easier and more effective across every format, including CTV. Built to responsibly deliver quality, performance, and adaptability, OpenX makes digital advertising safer, smarter, and built for what’s next. Learn more at www.openx.com.
Why Work With Us
At OpenX, we value curiosity, innovation, and diversity. We are passionate about pushing the boundaries of ad tech and finding new ways to deliver value to our partners and we know our best chance of delivering is by creating diverse and inclusive teams where employees can do their best work being their authentic selves.
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OpenX Technologies Offices
Hybrid Workspace
Employees engage in a combination of remote and on-site work.
Typical time on-site:
Not Specified
