Software Engineer III (JavaScript)

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.

You will be part of the core exchange development team. Our exchange handles billions of ad requests daily connecting thousands of publishers with demand partners. It’s fully containerized running in the cloud in multiple regions across the world. Ads from our systems can be seen in your favored mobile game, web page, maybe TV in the future. That’s the place where each millisecond matters.

Recognize non-human traffic and block it to reduce the cost of our infrastructure and to not overload our demand-side partners, detect malware in ads, check if they meet standards and keep websites and visitors safe, provide a response in a few milliseconds if the quality of traffic and ads is good for 380 billions of requests per day.

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 50 PB of data per week

Over 1200 production deployments a month

What we offer::
• Employment contract (17 708 - 19 792 PLN gross/monthly) OR B2B (147 - 164 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 Product and UX teams to bring consumer-grade user experience and design to the enterprise

• 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

• Team work collaboration

Required Qualifications::
• 4+ years experience with building SaaS applications using JavaScript/Typescript

• Experience with React and Node.js

• Experience with database system design, RDBMs, or NoSQL

• Experience with Google Cloud Platform or Amazon Web Services - nice to have

• Experience working in digital media, marketing technology, or advertising technology is a big plus

• Communicative Polish and English

Desired Characteristics::
• Good written & oral communication skills, excellence

• Team player

• Self-starter with the ability to independently identify and act on areas of improvement

• Ability to rapidly learn and understand new systems

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