OpenX Technologies Jobs

Senior Software Engineer IV (Python)

OpenX Technologies

Senior Software Engineer IV (Python)

Posted 2 Days Ago

Easy Apply

Be an Early Applicant

Hiring Remotely in Kraków, Małopolskie, POL

Remote or Hybrid

181-25K Hourly

Senior level

AdTech • Enterprise Web • Information Technology • Machine Learning • Marketing Tech • Sales

OpenX is an ad tech company that drives optimal value for advertisers through high-scale marketplaces across all screens

The Role

Design and deliver scalable, distributed, low-latency platform systems and integrations. Build features, improve server and process efficiency, and enhance system scalability, stability, and cost effectiveness. Own projects end to end while collaborating with product, engineering, and partner teams across locations. Work on audience segments, data processing, AI-powered discovery, targeting, and digital advertising technologies.

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’re seeking a Senior Software Engineer with strong platform and cloud expertise to design and implement scalable integrations that enhance the performance of our platform. You’ll join a talented team to build and optimize real-time services, collaborating closely with partner engineering and product teams to deliver secure and robust solutions.

If you’re:
Open-minded - happy to give & receive feedback, not afraid to fail, and move on
Proactive - always want to find a satisfying solution
Self-organized and self-motivated
We want to talk to you.

We are operating at a scale:
100% Cloud-based (GCP) platform
Over 370 billion Ad requests every day
Over 120 000 CPU daily
Over 140 TB RAM daily
Over 50 PB of data per week
Over 1200 production deployments a month

The Team focused primarily on building audiences and segments capabilities for our platform. Our core work revolves around how audience segments are discovered, enriched, filtered, evaluated, and activated, so users can find and use the right audiences more effectively across different markets.
To support this, we work on AI-powered segment discovery, international audience targeting, contextual intelligence, and data marketplace features that help users discover, evaluate, and activate the right audiences at scale.
Our work also includes the underlying graph and data-processing foundations from household graph research to scalable 1P segment pipelines, combining product, backend, and data engineering to build ad tech solutions for a 'cookieless' future.

What we offer:

Employment contract (22 595 - 25 254 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 Responsibilities:

Design high-performance, distributed, low-latency systems
Architect, create and deliver new features and functionality
Work with Product to drive the requirements, and own the project end-to-end
Work with Engineering and Product teams distributed across multiple locations
Analyze and improve efficiency, scalability, and stability of servers and processes
Think long-term and be unsatisfied with band-aids
Identify unnecessary complexity and remove it, analyze existing solutions

Required Qualifications:

5+ years experience with building SaaS applications using Python
Experience with databases system design, RDBMs (MySQL, Postgres) or NoSQL
Experience with Amazon Web Services or Google Cloud Platform
Deep knowledge of cloud solutions, enabling the analysis of system architecture while taking potential costs into consideration (or alternatively, strong proficiency in another cloud platform).
Experience with REST/GraphQL
Experience with k8s, and Docker, CI/CD, SQL (BigQuery)
Communicative Polish and English

Desired Characteristics:

Experience with JS/TS and Java is nice to have
Experience with Airflow and Cloud Composer
Creating, maintaining, and modifying DAGs to orchestrate and automate data pipelines
Experience working in digital media, marketing technology, or advertising technology is a big plus.

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

5+ years of experience building SaaS applications with Python
Experience with database system design, including relational databases such as MySQL or PostgreSQL, or NoSQL databases
Experience with Amazon Web Services or Google Cloud Platform
Deep knowledge of cloud solutions and system architecture, including cost considerations
Experience with REST or GraphQL
Experience with Kubernetes, Docker, CI/CD, and SQL including BigQuery
Communicative Polish and English language skills
Experience with JavaScript or TypeScript
Experience with Java
Experience with Airflow and Cloud Composer
Experience creating, maintaining, and modifying DAGs for data pipeline orchestration and automation
Experience in digital media, marketing technology, or advertising technology

What the Team is Saying

OpenX Technologies Compensation & Benefits Highlights

Healthcare Strength — Healthcare includes comprehensive medical, dental, and vision coverage alongside 100% employer-paid therapy and life coaching. U.S. plan details also indicate multiple options with the employer covering a substantial share of premiums.
Leave & Time Off Breadth — Time off is presented as unlimited from day one with extended holidays and several four-day holiday weekends. This points to a generous policy framework that exceeds standard PTO structures.
Parental & Family Support — Parental leave is advertised as 100% paid for birthing, non-birthing, and adoptive parents, complemented by family-formation support. This positions family care as a prominent element of total rewards.

Learn more about OpenX Technologies's Compensation & Benefits →

OpenX Technologies Insights

What's It Like to Work at OpenX Technologies? OpenX Technologies Culture & Values OpenX Technologies Career Growth & Development What's the Work-Life Balance Like at OpenX Technologies? OpenX Technologies Leadership & Management OpenX Technologies Company Growth, Stability & Outlook

View all jobs at OpenX Technologies

View OpenX Technologies Profile

Report Job

Am I A Good Fit?

beta

Get Personalized Job Insights.

Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.

The Company

HQ: Pasadena, CA

420 Employees

Year Founded: 2007

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.