Senior Software Engineer, Java
Location: Stockholm, Sweden
Contract Type: Full Time Permanent
Job Reference ID: 11520
ApplyOur DevOps culture is strong: we believe in “release small, release often.” Thanks to our fully automated CI/CD pipelines, we push over 13,000 releases to production every year, delivering value to customers in real time. We use modern technologies across backend, frontend, apps, data and infrastructure, and we’re continuously evolving. We tackle complex engineering challenges such as real-time scalability, database migrations with no downtime, and peak transaction loads, all while maintaining an exceptional and safe customer experience.
Turning skills into thrills
- Technical Expertise
- Strategic Thinking and Innovative
- Adaptive Problem-Solving & Experimentation
- Cross-Functional Collaboration
- Agility & Adaptability
- Curiosity & Continuous Learning
Turning skills into thrills
United by our three values
Striving for excellence and beyond
Taking ownership and upholding high standards every day
As one team, we achieve more
Senior Software Engineer, Java
The role
What you will do
- Develop secure, reliable, and maintainable solutions for authentication, authorization, and session-related flows in a business-critical domain.
- Design and evolve backend solutions that meet both business and technical requirements, while proactively identifying risks and improvement opportunities related to security, reliability, and performance.
- Contribute to a high engineering bar through clean design, code reviews, testing, and pragmatic engineering practices.
- Take ownership from design to production: break down work, drive delivery, and support operational stability in production.
- Proactively improve quality by catching issues early through automation, validation, and shift-left testing practices.
- Make sound technical decisions and align effectively with teammates and stakeholders across product, architecture, and security.
Your experience
- Strong experience building and evolving production-grade backend systems in Java.
- Solid experience with the Spring ecosystem, ideally Spring Boot, and designing APIs and service integrations in complex environments.
- Experience working with distributed systems and event-driven architecture, ideally with Kafka and/or Solace.
- Solid understanding of authentication and authorization concepts, including sessions, tokens, redirects, cookies, access control, and common implementation pitfalls.
- Knowledge of OAuth 2.0 and OpenID Connect is a strong advantage.
- Strong secure development mindset, with the ability to identify risks, think through abuse cases, and apply secure-by-default principles in design and implementation.
- Good understanding of common application security practices such as OWASP principles, dependency/security scanning, and safe handling of sensitive data and PII.
- Experience with testing strategies such as integration testing, contract testing, and test automation.
- Comfortable reviewing code, giving and receiving feedback, and maintaining a high quality bar.
- Able to break down requirements and technical designs into clear deliverables, and sequence work in a way that reduces delivery and operational risk.
- Strong communication skills, with the ability to represent the team clearly in technical and stakeholder discussions.
- Experience with production support, monitoring, incident handling, and driving improvements after incidents.
- Experience using CI/CD pipelines and engineering tools to improve code quality, security, and delivery confidence.
- Experience working with relational databases.
- Experience with performance testing and performance-aware design is an advantage.
Testimonials
-
Bertrand Le Piolot
My mission is to position cybersecurity as a business enabler, by finding the right balance between security requirements and business development objectives.
Bertrand Le Piolot
Group Cybersecurity Director -
Lesya Liskevych
Our team turns every customers interaction into mainingful insights, leveraging AI to personalise and enhance the user experience on our gaming platform.
Lesya Liskevych
Head of Product Insights & AI Automation Technology -
From improving product features to enhancing safe gaming practices, data isn't just information, it's a catalyst for innovation and maintaining the Group's integrty.
Nonna Shakhova
Cloud Data EngineerNonna Shakhova
A European gaming champion
FDJ UNITED is a European leader in betting and gaming, trusted for its iconic brands and technological strength across around 15 regulated markets. We’re rapidly digitising our lottery business and expanding our sports-betting footprint, creating exciting opportunities to build the next generation of player experiences. Here you’ll work on high-impact projects: modernising platforms, scaling data-driven personalisation, and developing tools that both delight customers and protect them. Our goal is to strengthen customer relationships through smarter identification and insights. That means meaningful, purpose-driven work, from customer service to marketing, product design, compliance and more. All within an international, innovation-focused environment. We are shaping the future of gaming, join us!
Benefits
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