Senior Software Engineer – Identity & Agent Protocols (fmd)

Trusted Shops creates digital trust between people businesses and AI Agents. Every day millions of consumers rely on our solutions to make confident online decisions while businesses use our products to build trust strengthen customer relationships and grow sustainably.

With around 700 colleagues across Europe more than 25000 online shops and over 40 million consumers in our Community of Trust we are helping shape a safer and more transparent digital world. But trust is not only at the heart of our products it also shapes how we work together. We believe in collaboration ownership and the freedom to do your best work through a flexible hybrid work culture.

Join us and help create a digital world where trust transparency and meaningful connections drive every interaction.

To strengthen our Engineering Team we are looking for a

Senior Software Engineer - Identity & Agent Protocols (f/m/d)

Cologne (hybrid) or Berlin (remote) Permanent Contract (Full-time)

Were building the trust layer for agentic & human commerce: a Trust Authority that issues and verifies credentials for AI agents acting on behalf of consumers and shops. The protocol the APIs and the UI - you would be a core engineer on it.

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

• Design and build the APIs and services behind our Trust Authority - credential issuance verification refresh and revocation.

• Develop crossplatform Web Components

• Work with open identity standards such as OAuth2 / OIDC passkeys Verifiable Credentials did:web Web Bot Auth

• Own the system design - service boundaries data models API contracts - and make the calls that others build on.

• Build and run it on AWS with Terraform (Lambda ECS API Gateway DynamoDB KMS) including monitoring and alerting.

• Ingest and analyse agent traffic and turn raw signals into something we can act on.

• Own our automated testing: build the end-to-end contract and visual regression suites in CI (Playwright) from scratch so we release without manual regression checks.

• Take features from an unclear idea to production and keep them healthy.

• Strong backend engineering ideally in / TypeScript. Depth matters more to us than the specific language - part of our stack is Java (Keycloak).

• Frontend experience with JavaScript TypeScript HTML CSS.

• Real API and system design experience: youve designed APIs other teams depend on and you can explain your trade-offs.

• Hands-on AWS and infrastructure as code (Terraform). You deploy your own changes.

• Solid security fundamentals: OAuth2 / OIDC secure API design and the basics of signing and key management.

• Youve built automated test suites others rely on not just tests alongside your own features. Hands-on with a modern E2E framework such as Playwright or Cypress.

• Youre comfortable when the answer isnt known yet and you decide with incomplete information.

Nice-to-haves:

• Verifiable Credentials DIDs WebAuthn / passkeys or HTTP message signatures.

• Event-driven architecture (SNS / SQS) or data pipelines.

• Web Components (Lit) - parts of our team ship UI that runs inside our customers websites.

What we offer you:

• Hybrid work:Combine flexible remote work with team time in the Cologne office (on-site days depending on your location)

• Workation: Temporarily work from a destination of your choice within EU Iceland Liechtenstein or Norway

• 28 vacation days

• 2.5 additional days off at Christmas New Years Eve and Carnival

• Buddy program (an experienced trustee is at your side)

• Individual learning & development opportunities (internal & external trainings e-learnings)

• Events (Team Events Unit Events etc.)

• Health Pass (free online and offline sports fitness and health courses)

• Permanent contract with Europes trusted brand

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.