Senior Software Engineer - Backend (Java, Spring Boot)

The CRONUS Platform Team is part of Portfolio Brands Tech and supports the digital commerce platform used by Weekday, COS, ARKET and &Other Stories. The team owns shared platform capabilities that help the brands deliver stable, secure and reliable customer experiences.

The Platform Team works across five capability areas:

Backend Engineering: Shared backend services and system-to-system integration services.

Site Reliability Engineering: Reliability, availability, monitoring, alerts and performance engineering.

Automation: Quality automation using Playwright and process automation using RPA.

Operations: Incident management, problem management and platform stability.

Security & Compliance: Security engineering, audits and compliance.

You will work mainly within Backend Engineering and the Identity module, while collaborating closely with SRE, operations, automation, security and other product teams. The team values end-to-end ownership, open communication, shared learning and practical solutions that improve customer experience and business reliability.

We are looking for someone with strong backend engineering and customer identity experience, along with a collaborative and ownership-driven mindset.

Overall Experience: 8-10 years of relevant software engineering experience, including designing, developing, testing and operating backend applications or services.

Java: Strong and recent hands-on experience with Java 17+ and core Java concepts, including object-oriented design, collections, exception handling, concurrency and clean code.

Spring Boot: Practical experience building production-grade REST APIs and microservices using Spring Boot and the wider Spring ecosystem.

IAM / CIAM: Meaningful hands-on experience with customer identity and access management, including authentication, authorization, user identity, access control, identity journeys, customer profiles, consent and personal-data protection.

Azure B2C: Experience with Azure AD B2C / Microsoft Entra External ID or a comparable CIAM platform. You should understand user flows or policies, registration, MFA, social identity providers, tokens and backend integration.

Identity Standards: Good understanding of OAuth 2.0, OpenID Connect, JWT and token lifecycle management.

Backend Engineering: Strong experience with API design, microservices, secure coding, databases, system integrations, performance, reliability and production support.

Cloud & Containers: Experience with cloud-native development, Docker and Kubernetes. Azure experience is preferred.

CI/CD: Experience with automated build, test and deployment pipelines.

Databases: Practical experience with SQL and/or NoSQL databases, for example PostgreSQL or Cosmos DB.

Testing: Experience with unit, integration, contract, security and performance testing.

Observability: Experience with logging, monitoring, metrics, tracing and production alerting.

Experience with event-driven systems and messaging platforms such as Azure Service Bus or similar technologies.

Experience migrating between customer identity platforms or modernizing an existing CIAM solution.

Exposure to Strivacity or another modern customer identity platform.

Experience working with customer consent, preference or newsletter capabilities.

Experience in e-commerce or another high-traffic customer-facing digital platform.

Passionate about secure, reliable and simple customer experiences.

Comfortable taking ownership and moving complex work from problem to production.

Collaborative team players who work well in global, cross-functional environments.

Proactive problem-solvers who balance technical quality with practical delivery.

Able to explain technical choices, risks and trade-offs in clear language.

Interested in mentoring colleagues and growing into broader technical leadership responsibilities.

Curious and adaptable as technologies and identity platforms evolve.

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H&M is a global company of strong fashion brands and ventures. Our goal is to prove that there is no compromise between exceptional design, affordable prices, and sustainable solutions. We want to liberate fashion for the many, and our customers are at the heart of every decision we make.​

We are made up of thousands of passionate and talented colleagues united by our shared culture and values. Together, we want to use our power, our scale, and our knowledge to push the fashion industry towards a more inclusive and sustainable future. ​

Help us re-imagine fashion and together we will re-shape our industry. Learn more about H&M here .

WHY YOU’LL LOVE WORKING HERE ​

At H&M, we are proud to be a vibrant and welcoming company. We offer our employees attractive benefits with extensive development opportunities around the globe. ​

We offer all our employees at H&M attractive benefits with extensive development opportunities around the globe. All our employees receive a staff discount card, usable on all our H&M brands in stores and online. Brands covered by the discount are H&M (Beauty and Move included), COS, Weekday, Monki, H&M HOME, & Other Stories, ARKET, Afound. In addition to our staff discount, all our employees are included in our H&M Incentive Program – HIP. You can read more about our H&M Incentive Program here . In addition to our global benefits, all our local markets offer different competitive perks and benefits. Please note that they may differ between employment types and countries.

JOIN US ​

Our uniqueness comes from a combination of many things – our inclusive and collaborative culture, our strong values, and opportunities for growth. But most of all, it’s our people who make us who we are.​

Take the next step in your career together with us. The journey starts here.​

*We are committed to a recruitment process that is fair, equitable, and based on competency. We therefore kindly ask you to not attach a cover letter in your application.