Senior Fullstack Engineer (f/m/d) – Human & Agentic Trust

Trusted Shops SE (DE) • Cologne

Cologne

from today / asap

Your duties

Trusted Shops develops SaaS solutions for over 40 million users and 30,000 businesses across Europe. Our product suite includes products such as the Trustmark, Buyer Protection and the eTrusted experience feedback platform. Our products are part of a 25-year mission to enable trust between people and businesses in the digital age.

Home of our Product Development is the Products & Engineering Department, which consists of 15 cross-functional Product Teams across 3 Product Domains (Consumer, Business and Platform), working in an agile environment.

We’re looking for a talented and curious Senior Fullstack Engineer (f/m/d) to join our Platform Domain, someone who thrives in dynamic environments, enjoys solving complex problems through code, and is driven to improve the overall user experience.

In this role, you’ll be part of our Trstd Login Team, where we’re building the next generation of secure and user-friendly authentication tools for agentic commerce - designed to foster trust between users, businesses and agents.

Your Key Responsibilities as a Senior Fullstack Engineer (f/m/d):

Work in a cross‑functional Product Team to design, build, and evolve secure, scalable identity and authentication services.
Develop cross‑platform Web Components and their integration into major eCommerce systems (Shopware, PrestaShop, WooCommerce, Magento, Shopify).
Implement secure System Communication using OAuth2 and OIDC, following a language‑agnostic engineering mindset.
Take full ownership in a “You build it, you own it” culture.
Build and maintain infrastructure using Terraform and AWS services such as Lambda, ECS, API Gateway, and DynamoDB.
Optimize reliability, security, and performance across Identity‑related components.
Collaborate with engineers, product managers, and delivery experts to ship impactful, user‑centric features.

Your profile

Strong frontend experience with JavaScript, TypeScript, HTML, CSS.
Experience building React applications and hands-on experience with Web Components & lightweight frameworks like Lit.
Backend skills in Node.js with Express.
Knowledge of Keycloak (Java), authentication flows, identity protocols.
Hands‑on AWS knowledge (Lambda, ECS, API Gateway, DynamoDB).
Experience with Terraform / IaC (or willingness to learn).
Knowledge of microservice architecture, secure RESTful API design, and web security standards.
Growth mindset, collaborative working style, strong communication skills in English.

What we offer you:

Hybrid work: Combine flexible remote work with team time in the office
Workation: Temporarily work from a destination of your choice within the EU, Iceland, Liechtenstein or Norway
Permanent contract with Europe's trusted brand
One "Self Education Day" per month
28 vacation days + 2.5 additional days off at Christmas, New Year's Eve and Carnival
Buddy program (an experienced trustee is at your side)
Individual training opportunities
Events (Team Events, Unit Events, etc.)
Health Pass (free online and offline sports, fitness and health courses)

BUILD A COMMUNITY OF TRUST WITH US - #cometotrust

Not sure if you are what we are looking for? Apply!
At Trusted Shops, we are interested in you as a person - whether you fit in with us is
independent of gender, nationality, ethnic and social origin, religion/belief, disability, age, sexual orientation and identity. Trusted Shops is clearly committed to diversity and against discrimination.

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What opportunities does "new work" offer our colleagues? Patrick tells us his story

Your benefits in tech

New work

Work from wherever you feel most comfortable. Whether in one of our 5 offices or temporary from another location in Europe.

Health Pass

Stay fit – physically and psychologically. Our company health management offers you a wide range of courses, presentations and workshops.

International flair

With a team from more than 40 different nations, it never gets boring. We celebrate our diversity and the countless new perspectives it gives us.

Individual development opportunities

Unleash your talent and improve your individual skills that support you in your work.

Buddy programme

Your buddy will help you settle in when you first start out with us. Later, you can also share your experience with new colleagues.

Team events

Whether in summer, winter or whenever it suits your team – we enjoy spending time together.

Guilds

In cross-team guilds, we work on current topics in a self-organised and practical manner, e.g. in the Architecture guild or the DevOps guild

Hackathons

We like to think outside the box, developing useful and creative solutions to problems during small events – whether related to work or not

Peer- /mob-programming

Many people work together to develop the best code. This allows us to progress even more effectively in projects and to learn from each other.

Knowledge marketplace

Everyone can offer knowledge or search for it on a kind of bulletin board. This creates spontaneous training sessions with each other

Agile Coach

Agile coaches are available to you and your teams so that you can be successful together.

Our values

Transparency

Open and clear communication gets us to our goals quickly. Address your topics openly – we will find a solution for everything together.

Respect

Every single one of our colleagues is a valuable part of our community. Respectful interaction and openness are prerequisites for our work.

Trust

We know you’re doing a great job – otherwise you wouldn't be here. We trust you, your skills, ideas and intentions.

Are you passionate about the code behind our products?

Programming Languages

Java: Java is used by some of our Tech teams and supports us with components that have complex logic, usually in combination with Spring Boot

TypeScript: We use TypeScript combined with the React framework in the frontend and also on the server side with NodeJS

Python: We often use Python when processing or transforming data.

Frameworks

React: React is used when the performance of our solutions is important. Our B2C environment, in particular, benefits from React (shop profiles, trust badges, widgets, etc.)

Spring Boot: When it comes to complex business logic in Java and Kotlin, we use Spring Boot. It is deployed in ECS

NodeJS: Our focus is on serverless, and we often use typescript in the backend. We mostly use NodeJS in combination with AWS Lambda

Service & Tools

Circle CI:  CircleCI is our CI/CD tool for automated builds, testing & deployment

GitHub:  GitHub supports our internal open source policy and enables cross-team cooperation and feedback

Ansible: We use Ansible to provide our virtual servers in a repeatable and automated way

Terraform: Our AWS infrastructure is fully managed with Terraform. This allows us to keep a simple history of all changes and minimise the manual effort.

Databases & Hosting

DynamoDB: DynamoDB is often used to access large amounts of data in real time. We regularly use it with AWS Lambda to provide a scalable solution.

PostgreSQL/MySQL: If flexibility of data access is paramount, then we also use relational databases

AWS:  For us, it's "cloud first" so that we are able to scale the infrastructure of our products. Here we rely on services such as AWS Lambda, S3 and DynamoDB

Employee reviews

Right now we are working on a new major project for user management and permissions, which is interesting but also complex and has many aspects that will allow it to be integrated into other components. I really like the fact that, as developers within the team, we can decide which technology and programming language we want to use and how we structure the processes. This can sometimes be a challenge, but it helps us gain a lot of new experience. I can work on anything I want to learn about on self-learning days. And of course we have a very friendly and open working atmosphere. Team building events and mob/pair programming sessions also contribute to this.

I am currently working in the Review Insights team. In this product team, we work on frontends that help our customers, i.e. online retailers, to draw valuable information from the collected reviews. I have another colleague in the team from the front-end team with whom I work closely. This starts with the planning and discussion of solutions and ends with the joint revision of the written code. Overall, the working atmosphere at Trusted Shops is very pleasant and relaxed. Thanks to a specially developed platform solution, each product team can build its own micro frontends and is thus independent of the other product teams. This means that you are not restricted in your choice of framework, for example - however, we mainly use the common JavaScript frameworks. Personal development is also encouraged. This year, for example, I was able to take part in a one-week summer school on the topic of deep learning, and we basically have one day a month at our disposal to continue our education as we see fit.

Have we awakened your interest?

Apply now