Software Developer/ .NET (siteq.)

Our client is an international product-focused fintech company working on simplifying and improving the global payment ecosystem. They build solutions that enable seamless and secure transactions, with a strong focus on cloud platforms and container-based services, supporting both digital and in-person payment channels. The company employs around 300 people across Europe, with more than 70 experts based in Prague, primarily in product development and engineering roles. All products are built fully in-house from scratch by cross-functional agile teams, with a strong emphasis on quality, performance, security, and long-term maintainability. They value independence, ownership, and a strong engineering culture, and continuously invest in modern, performance-driven systems supporting FinTech clients across Europe, the Americas, Asia, and beyond. Heavy corporate processes are intentionally avoided in favor of a collaborative, pragmatic, and technically driven environment. The Prague office serves as a key product development and innovation hub. The role can be based in Prague, České Budějovice, or worked remotely, depending on what works best for the candidate.To succeed in this role, you should have: • 5+ years of experience as a Java / Kotlin backend developer. • Strong hands-on experience with Spring Boot, REST APIs, and modern Java frameworks. • Proven experience designing and developing clean, reusable, and testable code in a microservices architecture. • Practical experience with cloud technologies, preferably AWS (Azure or GCP is also acceptable). • Good understanding of performance, security, and scalability in distributed systems. • Experience with CI/CD pipelines and modern development workflows. • Hands-on experience with Docker, Kubernetes, or similar container technologies is an advantage. • Ability to work independently, take responsibility for your part of the system, and drive technical decisions. • Experience with code reviews, technical documentation, and improving engineering standards. • Knowledge of React or frontend collaboration is a plus, not a requirement. • Communicative English (B2+) for daily collaboration in an international environment. • Proactive, reliable, and comfortable working in a fast-moving, product-driven environment.Designing and developing clean, reusable, and testable backend code within a microservices-based architecture. • Working on cloud-based backend solutions for modern payment terminal platforms used by international FinTech clients. • Development and maintenance of internal tools focused on: • device and terminal management, • reporting and analytics, • secure cloud and transaction-related services. • Actively participating in design decisions, proposing and defending design patterns and best practices. • Maintaining a strong focus on performance, security, scalability, and system stability. • Collaborating closely with business analysts, testers, Scrum Master, and payment domain experts. • Supporting code quality, participating in code reviews, and improving overall engineering standards. • Mentoring junior team members and contributing to the technical growth of the team. • Working in cross-functional agile teams using Scrum methodology.You will be guided through the recruitment process by a senior recruiter with hands-on IT background, ensuring a focused, transparent, and technically relevant process — without unnecessary recruitment bureaucracy. NOTE! We are only considering candidates with valid EU work authorization. Visa sponsorship is not available for this role.

Our client is an established technology company operating large-scale data centers and delivering mission-critical digital services to enterprise customers. The company provides infrastructure, SaaS and AI-driven solutions built on its own data and cloud environment. As part of a long-term transformation, it is building a next-generation distributed platform that will serve as the core orchestration and service layer across its product portfolio. This is a strategic greenfield initiative with long-term architectural ownership and direct impact on products used by thousands of customers.We are looking for a Senior Software Architect with a strong engineering foundation: • 5+ years of hands-on software engineering experience • Proven background in building and evolving production-grade systems • Experience growing from implementation-level responsibilities into architectural ownership • Demonstrated ability to design complex distributed systems • Experience designing scalable, highly available APIs • Experience with event-driven architectures and asynchronous communication • Strong understanding of secure system design principles (IAM, RBAC, auditing, data protection) • Experience designing transactional and analytical data models • Ability to translate product and business requirements into sustainable technical architecture • Engineering mindset with practical understanding of implementation trade-offs Nice to have • Experience integrating service provisioning or automation layers (IaC principles) • Experience working in cloud-native environments • Messaging systems such as Kafka, RabbitMQ or equivalent • Multi-tenant system design • Usage-based or subscription billing systems • Experience collaborating with DevOps teams on CI/CD and deployment strategies These areas describe the platform context rather than strict qualification filters. Fluency in Czech and English (spoken and written) is required.We are looking for a Senior Software Architect who will define and drive the architecture of a multi-tenant distributed platform responsible for service lifecycle management, provisioning orchestration and usage-based billing logic. Your responsibilities will include: • Defining the long-term target architecture of the platform • Structuring the system into clear domains and modular components • Designing scalable, highly available distributed system patterns • Defining API standards and integration contracts • Designing event-driven communication and data flow models • Designing the application layer responsible for provisioning and usage processing • Collaborating closely with Product, Engineering and Infrastructure teams • Providing architectural oversight, technical reviews and mentoring senior developers • Ensuring long-term maintainability, performance and security This is a software architecture role focused on platform design and technical direction. It is not an infrastructure or DevOps engineering position.If this opportunity resonates with you, we would be glad to connect. The recruitment process will be led by an experienced IT recruiter with hands-on technical background, ensuring a focused and meaningful discussion. NOTE! This position is open only to candidates who are eligible to work in the EU without visa sponsorship, who can reside and work in the Czech Republic on a long-term basis, and who are fluent in Czech