Senior Software Engineer (Python)

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 operating at a scale: 100% Cloud-based (GCP) platform Over 400 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 Project: At OpenX Poland, we’re looking for talented, communicative, and curious engineers to join our amazing team in Cracow, Poland. Currently, we’re looking for a Software Engineer (Python). You will have a chance to work in some aspects of agile application development, including our highly efficient and available serving platform, and your opinions will be considered in certain phases of product development, starting from requirements to validation and deployment. You will assist other engineers to ensure that our processes are defined, documented, tested, and easy to use. The team is using the following technologies: Frontend: JS/TS, React, Material UI API: Python, Node.js Backend: Java, Go, Erlang, ElixirCICD: Cloudbuild, Spinnaker On a daily basis, we are using the Scrum framework with an open-minded attitude to adapt the process to our needs. Within the team, you will have the opportunity to work closely with a full-stack team of SWEs and SDETs focusing on different domains (both frontend and backend), as well as be a part of the API Guild focusing on making impactful changes to our tools and processes. Please note: all interview stages are run remotely!

What we offer:

• Employment contract (21 250 - 25 000 PLN gross/monthly) OR B2B (167 - 196 PLN net/hourly)
• Working with the newest technologies such as Cloud Computing (GCP)
• Experienced Team (50% of the company are senior developers!)
• 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-aidsIdentify unnecessary complexity and remove it, analyze existing solutions

Required Qualifications

• 5+ years of similar position working experience in Python along with a Bachelor’s degree in Computer Science or an equivalent degree
• Experience with database system design, RDBMs (MySQL, Postgres), or NoSQL
• Excellent written and spoken English skills
• Comunicative Polish
• Experience working in digital media, marketing technology, or advertising technology is a big plus

Desired Characteristics

• Experience Google Cloud Platform (or any other cloud platform), k8s, and docker
• Experience in Rest API
• Experience in GraphQL
• Familiarity with advertising technologies and the advertising ecosystem

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 (Covid insurance included)
• 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: November 21, 2024