Experienced FullStack Engineer - Payment & Basket (m/f/d)

MediaMarktSaturn Retail Group

Barcelona

Hybrid

EUR 90,000 - 120,000

Full time

14 days+

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Benefits offered by this job

Young environment

MediaMarkt discount

MediaFlex program

Flexible working hours

Two offices in Barcelona

Training budget

Language classes

Birthday off

Cutting-edge tech stack

Job summary

MediaMarktSaturn Technology in Barcelona seeks an experienced backend developer to join the Payment & Basket Platform team. You will design and implement value-adding features, follow Clean Code, and own services from development to operation in a cloud-centric environment.

You will work with Kotlin, Node.js, and Java, contribute to API design, microservices, and IaC tooling (Terraform, Helm, Flux), and collaborate across teams to ensure high performance, reliability, and security in a

Qualifications

5+ years of professional experience with Kotlin.
Strong knowledge of backend technologies and frameworks (Node.js, Express).

Responsibilities

Develop value-adding features for customers following Clean Code principles.
Embrace DevOps and own services from requirements to operation.
Make architectural decisions for high performance, robustness, and maintainability during cloud transition.
Share knowledge and grow the team.
Address recurring support requests with automated code solutions.
Foster open, honest team discussions with confident yet reflective communication.

Skills

Kotlin

Backend development

Node.js/Express

Microservices

SQL

NoSQL

Git

Cloud platforms

CI/CD

Payment gateways

Java

GitOps

Kubernetes

Monitoring tools

API design

Tools

Quarkus

Spring Boot

PostgreSQL

MySQL

MongoDB

Git

Terraform

Helm

Flux

Kubernetes

Grafana

Prometheus

Kibana

Stripe

PayPal

Job description

Your Tasks

The Payment & Basket Platform team is a foundational team working on our core stack to improve developer experience in the area.

Develop value-adding features for our customers and leverage your technical expertise to create the best possible solutions following the Clean Code principles.
Embrace DevOps, taking responsibility for your team’s services from requirement analysis to operation.
Make architectural decisions with your team to ensure high performance, robustness, and maintainability of the application, especially during the transition from on-premise to the cloud.
Share your knowledge with your team colleagues, assist them, and contribute to the growth of the entire team.
Understand recurring support requests and implement automated solutions in the code.
Foster an open, honest, and constructive discussion culture within the team through your confident yet reflective manner.

Your Profile

5+ years of professional experience working with Kotlin
Strong knowledge of backend technologies and frameworks like Node.js, Express.Nice to have: Quarkus / Spring boot
You have extensive experience in API design and know how to integrate microservices in a fault-tolerant and RESTful manner.
You have experience working with SQL (PostgreSQL, MySQL) and NoSQL (MongoDB) databases.
Knowledge of version control systems like Git.
Proficiency in cloud platforms, preferrably Google Cloud
Experience with continuous integration and continuous deployment (CI/CD) pipelines.
Understanding of payment gateways and integration (e.g., Stripe, PayPal).
Familiarity with performance optimization techniques for web applications.
In addition to solid knowledge of object-oriented programming languages (preferably Java), you have practical experience with GitOps (Terraform, Helm, Flux) and Kubernetes.
You are familiar with operating a business-critical service and know how to monitor it using tools like Grafana, Prometheus, and Kibana.
Understanding of microservices architecture and implementation.
You are knowledgeable about common design patterns and testing strategies, and you do not see quality and speed as contradictory.
Knowledge of security best practices for web applications.
Ability to adapt to rapidly changing technologies and methodologies.
Excellent English language skills, both written and spoken

About Us

MediaMarktSaturn Technology is working to make Europe’s number-one consumer electronics retailer thetechnology leader in its industry. To this end, several hundred developers, UX designers and system architectsusing state-of-the‑art technology work hand in hand with business owners in agile teams to develop customer‑focused technology solutions for more than 6 million customers every day in 13 countries.

Within the Global Technology division, you are part of a strong cross‑functional team of software engineers,data scientists and analytics experts to drive the development of our global product data management. Withinthe team and in close collaboration with the business product owner, you will design and develop data andanalytics solutions on our cloud‑based technology platform to support our business in product datamanagement.

(*) Diversity and equal opportunities are important to us. Research shows that women and people from underrepresented groups are less likely to apply if they don’t meet all the criteria. If you are interested in this position but your experience doesn’t align perfectly with every requirement, we still encourage you to apply.

Additional Benefits

Young environment, where not everything is written in stone, and where you are expected to contribute and co‑create the culture of the Tech Hub and international collaboration model
You'll have a 10% discount on the entire MediaMarkt website, so you can treat yourself at a lower price whenever you want!
On top of your compensation package, you can request Flexible Pay “MediaFlex program” (a.e. Ticket Restaurant, Private Health Insurance with Adeslas, …)
Flexible working time and possibility to combine home office / presential working. Intensive workday every Friday and during summer
The possibility to choose between 2 offices: The first one is the MediaMarkt Iberia HQ with a very attractive menu at a price. You'll eat for less than €4! And the second office is located at Pier01, in Barceloneta, right in the center of Barcelona. Free coffee and free fruit once a week
There is a training budgetso you can continue developing the skills you need most to keep growing professionally and personally!
We offer language classes: English, Spanish, and German
On your birthday, you won't work! It's a day for you to enjoy without thinking about work
You'll be working with the most cutting‑edge technological stack of the moment