Company DescriptionAt The Stepstone Group, we have a simple yet very important mission: The right job for everyone. Using our data, platform, and technology, we create opportunities for job seekers and companies around the world to find a perfect match, in fair and equitable way. With over 20 brands across 30+ countries, we strive for fair and unbiased hiring.  At our Tech Hub, located near Wilanowska Metro, we are here as more than 300 ambitious specialists who work on the development of our IT products. We are proud to be part of The Stepstone Group, a global expert in job-tech platforms and e-recruiting. Join our team of 4,000+ employees and be part of reshaping the labour market and becoming the world’s leading job-tech platform.  The job at a glanceJoin our team and you’ll be responsible for building a state-of-the-art platform that powers scalable, event-driven recruiter facing systems.Working in the B2B department, you will design and evolve architectures that integrate complex dependencies, ensure reliability, and deliver high-quality solutions both to our internal and external customers.By joining our team, you will be playing a vital role as together we reimagine the labour market to make it work for everybody.Your responsibilities: Architectural leadership – design and evolve scalable, resilient system architectures using DDD; own key architectural decisions and manage system dependencies and integrations. Data-driven insight & decision-making – provide technical trade-off analysis, evaluate performance, scalability, and cost, and track system health and technical debt with meaningful metrics. Cross-functional collaboration – work closely with Engineering Managers and Product Managers to align technical roadmaps with business goals and select appropriate tools and frameworks. Mentorship & technical excellence – mentor engineers, lead design and code reviews, and promote best practices, analytical thinking, and continuous improvement. Execution & reliability – oversee critical systems and APIs, drive cloud and container optimization, ensure dependency resilience, and maintain high quality through structured testing strategies. Qualifications: Java expertise – expert-level Java (17+), deep understanding of JVM internals, concurrency, performance tuning, memory management, and strong knowledge of DDD, design patterns, and functional programming. Spring & reactive frameworks – advanced experience with Spring Boot, Spring Cloud, and reactive programming models. Event-driven architectures (Kafka) – deep knowledge of Kafka internals, fault-tolerant event-driven design, stream processing, schema management, and delivery semantics (ordering, idempotency, exactly-once). Cloud & container platforms (AWS) – strong proficiency with core AWS services and hands-on experience with Docker, Kubernetes, and ECS/EKS. Infrastructure, scaling & observability – experience with Infrastructure as Code (Terraform/CDK/CloudFormation), system scaling strategies, and modern observability tools (CloudWatch, OpenTelemetry, Prometheus, Grafana). Additional InformationBenefitsWe’re a community here that cares as much about your life outside work as how you feel when you’re with us. Because your job shouldn’t take over your life, it should enrich it. Here are some of the benefits we offer: Medical and dental care Life insurance Benefit platform budget Employee Referral Programme Hackathons, Knowledge Sharing Hours In-house projects Events and integration parties Charity initiatives, 2 extra volunteer days English/German lessons Game room and chillout zone Our commitmentEqual opportunities are important to us. We believe that diversity and inclusion at The Stepstone Group are critical to our success as a global company, so we want to recruit, develop, and keep the best talent. We encourage applications from everyone, regardless of background, gender identity, sexual orientation, disability status, ethnicity, belief, age, family or parental status, and any other characteristic.