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

Reply; Katowice; Hybrid; PLN 180,000 - 280,000; Full time

Benefits offered by this job

Benefits budget

Medical care package

Meal tickets

Gym membership cards

Cinema tickets

Language courses

Training opportunities

Networking events

Job summary

OBI Smart Technologies is seeking a Senior Fullstack Engineer for the Developer Experience (DX) team in Katowice. You will design and build internal developer platforms, tools, and services to enhance developer productivity, system visibility, and workflow automation across the ecosystem.

We expect strong fullstack skills (TypeScript, Node.js, NestJS, Vue/Nuxt), cloud and CI/CD experience, and effective English/Polish communication.

Qualifications

• Completed university degree in Computer Science, Data Science, Mathematics, or a related technical field.
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Responsibilities

• Design and maintain backend services and APIs.
• Build frontend applications with Vue/Nuxt.
• Develop internal tools to improve productivity and visibility.
• Evaluate solutions balancing cost, performance, complexity.
• Collaborate with DevOps on cloud, CI/CD, and observability.
• Troubleshoot issues and perform root cause analysis.
• Build POCs to validate new technologies.
• Contribute to internal DX platform improvements.

Skills

TypeScript

Node.js

NestJS

Vue

Nuxt

Kafka

AWS

CI/CD

Terraform

AWS CDK

GitLab CI

Event-driven architectures

Polish

English

Hybrid model

Katowice

5+ years experience

Education

Completed university degree in Computer Science

Job description

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.
• 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.

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 Techologies

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."