Senior Backend Engineer - Core Experience

Senior Backend Engineer - Core

Unknown Employer

Description Position at LeoVegas Group ABOUT THE ROLE Are you a skilled Sen ior Backend Engineer looking to make an impact in a fast-paced and dynamic environment? Join our dynamic Core Platform Team, the backbone of our product ecosystem. We are a crucial part of the Core division, responsible for building, maintaining, and evolving the foundational services and data infrastructure that power our products. Our mission is to provide scalable, reliable, and performant solutions for processing vast amounts of data, supporting various product teams across the company. We tackle exciting challenges in distributed systems, high-volume data streams, and ensuring the stability and performance of critical platform components. We are a growing team of 10 experienced engineers, fostering a culture of collaboration, ownership, and continuous learning. If you're passionate about backend engineering, data processing, and building robust platforms, you'll find a challenging and rewarding environment here. YOU WILL BE RESPONSIBLE FOR: ● Contributing to the development and architectural design of Rhino, our multi-brand gaming platform built on 230+ microservices. ● Securing deliveries and helping colleagues with theirs. ● Maintaining and upgrading our systems and services, identifying and resolving complex technical challenges, optimising existing systems for efficiency, and ensuring data integrity. ● Take full ownership of features and projects from conceptualisation and design through development, deployment, and monitoring. ● Working closely with QA and contributing to testing activity in the team. OUR SUCCESSFUL CANDIDATE WILL HAVE THE FOLLOWING: ESSENTIAL SKILLS ● Minimum 7 years of hands-on experience in Java with Spring Boot. ● Experience in several of these technologies: SQL, Jenkins, Maven, Git, Docker, Spring, JUnit. NICE TO HAVES ● Bonus points if you have used Kotlin and  Google Cloud Platform. ● Knowledge on messaging platform (Kafka) is a big plus. ● Knowledge on Agile methodologies. WHO WE ARE At the core of LeoVegas Group is Team Leo. Our culture is our foundation and is what enables us to innovate, build, and lead as we trailblaze our way through the igaming industry. We’re a team of over 2000 innovators, initiators, and groundbreakers working in a fast-paced and agile environment across 19 offices worldwide. BENEFITS ● Hybrid work policy ● 4 weeks of Workation  (T&C apply) ● Benefits package - 800 PLN net (B2B)/gross (UOP) monthly with access to the cafeteria platform (private medical care, insurances, sports card) ● Training budget ● ICAS assistance program that can provide help and guidance during challenging moments. ● Our office provides complimentary snacks and drinks; on Mondays, we serve complimentary breakfast. ● Team and office social events throughout the year ● Free parking for bicycles and motorcycles ● Free gym in the building ● Equipment: MacBook Pro + smartphone (iPhone 16/17 or Samsung Galaxy S25) JOIN US! In our pride, we empower our teammates to find their roar and run with their wildest ideas. We don’t wait for things to happen; we pounce and make it happen! Would you be a good fit for the Leo Pride - give us a roar! **As our company working language is English, we’d like to see your CV in English, please**

Senior Backend Engineer – Identity & Core Product (m/f/d)

Content Pass

THE MISSION At contentpass, we are on a mission to save independent journalism and the free web. We believe that privacy is a fundamental right and that quality content deserves to be paid for without selling user data. Our "Pur-Model" enables over 700 publishers to offer their readers a choice: consent to tracking or browse completely ad- and tracking-free for a small monthly fee. YOUR ROLE: THE HEART OF THE PRODUCT At contentpass, we often say that "the OIDC is the product, and the rest is glue." Our OIDC service is the central nervous system of our entire operation. It doesn't just handle logins; it manages the state of every single user interaction, subscription, and access right across hundreds of websites. We are looking for a Senior Backend Engineer who wants to take ownership of this core infrastructure. You won’t just be maintaining a library; you will be architecting the future of how users interact with the paid web. We have a massive roadmap ahead, and you will be the one building the bridge to the next generation of contentpass. WHAT YOU’LL DO * Architect & Scale: Lead the development and scaling of our central OIDC provider. * OIDC Federation: Implement and manage integrations with other OIDCs and Social Logins, allowing for a seamless "login once, browse everywhere" experience. * Extend Subscription Logic: Design and implement complex subscription mapping and entitlement logic that goes far beyond simple "active/inactive" states. * Single-Article Payments: Build the foundation for granular payment models. * Security & Privacy by Design: Ensure that our identity service remains a fortress for user data, strictly adhering to GDPR and the highest security standards. * Collaborate: Work closely with our SDK and Frontend teams to ensure the "glue" connects perfectly to your core service. YOUR PROFILE * Deep OIDC/OAuth2 Expertise: You don’t just use libraries; you understand the underlying protocols, flows (Authorization Code, PKCE, etc.), and security implications. * Backend Mastery: You are a seasoned developer, ideally with strong experience in TypeScript/Node.js. * Identity Experience: You have worked with Identity Providers (IdPs) like Ory Hydra, Keycloak, or Auth0, or have built custom identity solutions from scratch. * Product Mindset: You understand that technical decisions impact the business. You enjoy thinking about how "Identity" can enable new features like micro-payments. * Security First: You have a "security-by-default" mindset and experience with JWTs, encryption, and token management. * Language: Fluency in English (German is a plus, but not required). WHY US? * Impact: You are working on one of the most critical parts of our company. * Flexibility: We are a remote-first company. Work from our beautiful office in Berlin or from your home office anywhere in Europe. * Growth: A high degree of autonomy and the chance to shape the technical roadmap of our core product. * Purpose: Join a team that values privacy, independence, and the future of digital publishing. * Equipment: The hardware you need to do your best work (MacBook, etc.).

Senior Backend Software Engineer - Core Domain

Satispay

About us Satispay began by rethinking the simple act of a payment to remove the friction from our daily routines. But we didn't stop there. Today, we are building a complete financial platform designed to empower people and concretely improve their lives. By giving our 6 million users a clear, open path to pay, save, and invest, we are evolving into the definitive destination for every financial need. What you'll be doing As our Senior Backend Software Engineer, you'll be the person who plays a critical role in engineering the backbone of our payment platform, ensuring high-performant and scalable core systems. Here's what your day-to-day will look like: * Engineer core platform domains: Design and evolve our most sensitive systems—such as the Transaction Ledger, Identity & Access Management (IAM), or Payment Orchestration—ensuring they remain functional for product teams. * Scale risk & financial engines: Optimize and implement services dedicated to bank integrations, credit risk, and real-time fraud detection to protect our "source of truth." * Cross-team technical leadership: Drive technical analysis for projects that span across multiple services and produce high-quality documentation (Smart Papers) for stakeholders. * Foster engineering excellence: Ensure technical quality through rigorous testing strategies and safe rollouts, promoting a culture of simplicity and maintainability. * Mentor & develop: Provide technical guidance to junior and mid-level engineers, helping the team adopt the best tools to accelerate development cycles. Who we're looking for We need a problem-solver who loves teamwork and gets things done. If you're curious and ready for real ownership, you'll fit in! Does this sound like you? * Extensive experience: You have at least 5 years of related experience in back-end software engineering, with a track record in microservices and cloud environments (AWS preferred). * Technical depth: You possess deep experience with Java and Spring Boot, alongside a strong understanding of distributed systems. * Structured communication: You excel at communicating complex technical concepts clearly and coordinating implementations across different teams. * Impact mindset: You focus on delivering software that meets evolving user needs, avoiding analysis paralysis to optimize systems beyond initial requirements. * Language proficiency: You are passionate about FinTech and fluent in English. CareAbout: how we support your impact We move fast, and evolution never stops. It's a fun ride, but it can be challenging. To make sure our people truly thrive, we're committed to making their lives easier, both in the office and out in the world. That's why we created CareAbout: * ❤️ Health (Private insurance for you and your family, psychological support with Serenis, mental health workshops) * 💰 Financial resources (Stock Option Plan, Meal vouchers, Relocation support if you're moving countries) * ⚙️ Growth and development (Professional development programs, Internal mobility, Language courses with Preply) * 🌱 Flexibility (Unlimited PTO, Hybrid working policy*, Flexible working hours) * 👨‍👩‍👧 Family (Enhanced parental leave, Additional leave for child sickness) *We embrace three days per week in-office (Tuesday and Thursday + 1 of your choice), with the option to request extra remote time. Salary: €51,000 - €66,500 gross per annum This range is set using objective, gender-neutral criteria for the role's core requirements. However, we do not believe in putting a ceiling on talent. The final compensation package is tailored according to your unique experience and expertise. If your skills go beyond the standard profile, apply anyway so we can discuss a package that reflects your true value.   Equal opportunity employer At Satispay, we're proud to be an equal opportunity employer. We celebrate diversity and inclusion, welcoming individuals of all backgrounds. This opportunity is open to everyone, regardless - for instance - of race, colour, religion, sex, gender identity, sexual orientation, and national origin. Join us in a workplace where everyone belongs!   Learn more about us Our values and pillars aren't just fancy words on a page - they really shape everything we do. Explore them here.   #LI-VR1 #LI-Hybrid By submitting this application, I acknowledge that I have read and understood the content of the Privacy Policy