Senior Fullstack Engineer (Node.js, Vue.js) (B2B)

Responsibilities

We are looking for a practical and collaborative Senior Fullstack Engineer to join the Developer Experience (DX) team in a large enterprise environment. The role focuses on building internal developer platforms, tools, and services that improve developer productivity, system visibility, and workflow automation. You will play a key role in shaping engineering solutions, making technical decisions, and driving improvements across the developer ecosystem.

• Design and maintain backend services and APIs using TypeScript, Node.js, and NestJS, while making architectural decisions and evaluating trade-offs.
• Build and support frontend applications using Vue and Nuxt, ensuring good developer-facing UX.
• Develop internal tools and platforms that improve developer productivity, system visibility, and workflow automation.
• Evaluate technical solutions, balancing cost, performance, complexity, and maintainability.
• Collaborate with DevOps engineers on cloud infrastructure, CI/CD, and observability integration.
• Troubleshoot issues, perform root cause analysis, and drive continuous improvements.
• Build POCs to validate new technologies and drive experimentation.

Qualifications

• Completed university degree in Computer Science, Data Science, Mathematics, or a related technical field.
• Strong background in fullstack software development (5+ years) with hands-on delivery of production systems.
• Solid command of TypeScript, Node.js, and backend frameworks such as NestJS.
• Practical knowledge of building frontend applications using Vue or Nuxt.
• Good understanding of event-driven architectures and messaging systems such as Kafka.
• Familiarity with cloud environments (AWS: ECS, EKS, EC2, IAM, Lambda) and how services are deployed and operated.
• Working knowledge of CI/CD pipelines (GitLab CI) and Infrastructure as Code (Terraform / AWS CDK).
• Ability to work with technical design discussions, system architecture topics, and cross-team engineering challenges.
• Strong communication skills in English and Polish, with readiness to work in a hybrid model in Katowice.

About OBI Smart Technologies

Who are we

We are a joint venture between OBI and Reply Group, responsible for co-designing, building and operating mission-critical digital platforms for commerce, customer service, and omnichannel retail.

Our mission

"We unite technology leadership with deep retail vision to implement standardized processes and scalable digital products that drive efficient support for one of Europe’s largest DIY retailers. Leveraging proven best practices, we advance the internationalization of products and the digital mindset of our partners, delivering consistent and business-critical solutions to support the targets of our customer."