Develop yourself and the digital future – at Reply!

Reply is made up of a network of highly specialised companies, which support leading industrial groups in defining and developing business models to optimise and integrate processes, applications and devices, using new technology and communication paradigms, such as Artificial Intelligence; Big Data; Cloud Computing; Digital Communication; Internet of Things; Mobile and Social Networking.

Benefits

• Motivizer Benefits Platform to choose and manage all your benefits in one place. You receive a budget (550 PLN monthly). You can choose medical care package, meal tickets, sports cards (we have Multisport and on preferential terms, we have membership cards to one of the most popular Gyms), cinema tickets, shop vouchers, discounts and many more.
• Language Courses – you'll have access to a multi-language learning platform enabling you to practice you language skills and learn new ones!
• Regular and systematic further training opportunities - both internally and from external providers. We support your ongoing learning and development.
• Cooperation within  an internal community is our everyday reality. We have networking events, coding challenges, and company parties for different occasions.

Daily Tasks:

• You will join one of our engineering teams working on the technology platforms that enable OBI’s retail media and First Media capabilities across digital and physical channels. You will contribute to building scalable, data driven backend systems that allow brands to activate media, distribute content, and measure performance along the entire customer journey, from inspiration and planning through to purchase and engagement.
• You will work on backend services that power headless ad serving, campaign delivery, content distribution, targeting, analytics, and reporting across OBI’s owned channels. These platforms operate at scale, support multi-tenant publisher use cases, and require high reliability and performance for internal product teams and external advertising partners.
• You will work closely with product, DevOps, and data teams to design, build, and operate backend services that enable real time activation, data processing, and reporting, while ensuring availability, performance, and operational stability across the media technology stack.
• Design, build, and maintain backend services using NestJS, NodeJS, and TypeScript.
• Architect and scale headless advertising platforms and backend services for online marketing and retail media use cases.
• Contribute to the architecture and scaling of distributed, cloud native systems running on AWS and Kubernetes.
• Collaborate closely with DevOps teams to manage infrastructure using Terraform, Helm, and GitLab CI/CD.
• Implement and operate event driven and streaming solutions using Kafka.
• Ensure high availability, performance, and reliability through strong observability practices.
• Use Grafana, Loki, and Thanos to monitor systems, analyze logs, and support incident response.
• Contribute to continuous improvement initiatives across performance, scalability, security, and operational excellence.
• Support and evolve large scale publisher platforms, multi-tenant content management systems, and advertising platforms.