• Lead, mentor, and grow a team of ~8–10 strong systems and backend engineers, fostering a culture of technical excellence and high code quality. • Own the vision and roadmap for the platform layer of the Bidding Platform - planning its evolution with platform efficiency, reliability, scalability and security as the guiding lens. • Take part in defining the team's evolving scope — as the platform grows, we anticipate the need for multiple platform teams, leaving meaningful room to shape the scope around the areas that interest you most. • Delegate ownership of whole platform areas (e.g. monitoring, deployment, security) to senior engineers advising and supporting them when needed. • Deliver the team's capabilities as self-service platforms with clear usage contracts. • Base decisions on data - complex projects often require running experiments and gathering evidence before deciding. • Take part in IT-wide capacity planning for further platform scaling. • Own the framework for dispatching on-call alarms to the right teams and drive the continuous elimination of noisy alarms. The lead does not need to take part in the duty rotation personally.

Role Description Design, build, and operate a sovereign AI toolchain used in isolated or tightly controlled environments, including model serving, retrieval, orchestration, observability, and secure platform operations for enterprise AI engineering workloads. This role centers on open-source or open-weight LLM stacks, air-gapped or isolated deployment models, Kubernetes-based platform engineering, GPU-enabled environments, and auditable AI operations suitable for sovereignty-sensitive programs. WHAT WILL YOU DO? - Design and run Kubernetes environments optimized for AI inference, retrieval, experimentation, and agent execution in secure or isolated settings. - Deploy and operate open-source or open-weight model stacks, model gateways, vector databases, and supporting platform components. - Build reproducible platform automation using Infrastructure as Code and GitOps approaches for stable, auditable delivery. - Manage local registries, package mirrors, secrets, access controls, storage, networking, and observability in environments with limited or no public cloud dependency. - Optimize GPU, compute, and storage usage for reliable AI workloads while maintaining security and data sovereignty requirements. - Examples of market tools, models, and platform components expected: - Inference and local serving stacks such as vLLM, Ollama, llama.cpp, or OpenAI-compatible self-hosted endpoints. - Open-source or open-weight models appropriate for sovereign deployment, for example coding-capable and general-purpose families hosted internally through approved serving layers. - Platform tooling such as Kubernetes, Helm, Terraform, Ansible, ArgoCD, private registries, Qdrant or similar vector stores, and Open WebUI or comparable internal interfaces. - Developer-facing integration options such as VS Code-compatible extensions, Continue-style local model connectors, or editor integrations pointed at internal APIs instead of external SaaS endpoints. - Hardware awareness covering GPU-backed nodes, CPU-only fallback options, storage performance, network isolation, and on-prem or dedicated infrastructure patterns. Qualifications - Have 5+ years in platform engineering, DevOps, SRE, or MLOps, with strong Kubernetes and Linux expertise. - Have proven experience with AI infrastructure, model serving, private or on-prem deployments, and production operations for LLM-based workloads. - Have strong hands-on skills in Python plus automation tooling such as Terraform, Ansible, Helm, and GitOps workflows. - Have good understanding of networking, storage, access control, monitoring, and operational hardening in high-security environments. - Are comfortable working in sovereignty-driven environments where auditability, isolation, and controlled data handling are mandatory. Benefits - Financial benefits. - Benefits with focus on learning and development. - Benefits with focus on health and sport. - Benefits with focus on family and work-life balance. - Other benefits. Salary Final salary is negotiable. We are offering base salary depending on seniority level and previous experience of candidate. In addition to base salary we provide variable part and other financial benefits. Base salary will not be lower than 2100 € /brutto. Additional Information Please be informed that our remote working possibility is only available within Slovakia due to European taxation regulation. Location: Kosice Company: Deutsche Telekom System Solutions Slovakia Language: English Job category: Technical positions

Title: Senior Software Engineer - Core Platform - Streaming & Storages Location: San Francisco, California, United States Job Description: StubHub is on a mission to redefine the live event experience on a global scale. Whether someone is looking to attend their first event or their hundredth, we’re here to delight them all the way from the moment they start looking for a ticket until they step through the gate. The same goes for our sellers. From fans selling a single ticket to the promoters of a worldwide stadium tour, we want StubHub to be the safest, most convenient way to offer a ticket to the millions of fans who browse our platform around the world. About the Role: We are seeking a Senior Software Engineer to join our Core Platform - Streaming & Storage team. In this role, you will design, build, and evolve the streaming, messaging, and storage platforms that serve as critical infrastructure for StubHub’s engineering organization. As a Senior Software Engineer, you will lead the design and delivery of scalable platform capabilities, partner with engineering teams on their most complex performance and reliability challenges, and help modernize services that operate at the core of StubHub’s distributed systems. You will also play a key role in decomposing large monolithic SQL Server data stores into more purpose-built storage systems, supported by mature streaming solutions and reliable data access layers. About the Team: The team owns foundational products including message queues, DQL, retry infrastructure, message versioning, messaging control planes, and storage platforms such as key-value databases, distributed caches, and blob storage. These systems are used across engineering to support high-scale, reliable, event-driven services and business-critical workflows across listings, transactions, fulfillment, and customer experiences. This role is ideal for an engineer who enjoys solving deep infrastructure and backend problems, setting technical direction, influencing architecture across teams, and delivering platform capabilities that create measurable business impact. Location: Hybrid (3 days in office/2 days remote) – San Francisco, CA What You'll Do: - Design and develop SDKs, services, shared packages, and tools to enhance engineering efficiency and productivity. - Develop an intuitive cross-language performant runtime environment that will serve as a "container" for business/customer-facing services - Architecting and implementing high-performance, scalable services actively used by internal customers. - Serve as a subject matter expert (SME) in distributed caching and messaging, with a deep understanding of associated design patterns. - Collaborate closely with engineering teams as your customers, identifying technical inefficiencies and proposing scalable solutions and engineering patterns. - Drive initiatives to improve performance and scalability across our platform. - Champion best practices in software development, ensuring high standards of quality and efficiency. - Ability to thrive in a fast-paced environment and manage multiple priorities effectively. - Commitment to fostering a positive and inclusive team culture where diverse perspectives are valued. - What You've Done: - 5-6+ years of professional experience in software development - Experience with developing robust, mission-critical systems using one or multiple general-purpose programming languages (e.g., C/C++, Java, C# or any other OOP language) - Expertise in designing and optimizing distributed systems, including microservices architectures, caching strategies, and message queuing systems. - Demonstrated ability to analyze and enhance system scalability, reliability, and performance metrics. - Previous experience designing and developing solutions to complex problems with significant business impact - A strong understanding of how their systems interact with the broader production environment, including dependencies and platform primitives - Proven ability to learn other coding languages, platforms, frameworks, and tools - Strong communication skills and the ability to collaborate effectively with cross-functional teams. - Experience owning projects from the initial idea all the way to production - Experience mentoring junior engineers - What We Offer: - Accelerated Growth Environment: An environment designed for swift skill and knowledge enhancement, where you have the autonomy to lead experiments and tests on a massive scale. - Top Tier Compensation Package: Competitive base, equity, and upside that tracks with your impact. - Flexible Time Off: Enjoy unlimited Flex Time Off, giving you the flexibility to manage your schedule and take time to recharge as needed. - Comprehensive Benefits Package: Prioritize your well-being with a comprehensive benefits package, featuring 401k, and premium Health, Vision, and Dental Insurance options. - The anticipated gross base pay range is below for this role. Actual compensation will vary depending on factors such as a candidate’s qualifications, skills, experience, and competencies. Base annual salary is one component of StubHub’s total compensation and competitive benefits package, which includes equity, 401(k), paid time off, paid parental leave, and comprehensive health benefits. Salary Range $200,000—$250,000 USD About Us StubHub is the world’s leading marketplace to buy and sell tickets to any live event, anywhere. Through StubHub in North America and viagogo, our international platform, we service customers in 195 countries in 33 languages and 49 available currencies. With more than 300 million tickets available annually on our platform to events around the world -- from sports to music, comedy to dance, festivals to theater -- StubHub offers the safest, most convenient way to buy or sell tickets to the most memorable live experiences. Come join our team for a front-row seat to the action. For California Residents: California Job Applicant Privacy Notice found here We are an equal opportunity employer and value diversity on our team. We do not discriminate on the basis of race, color, religion, sex, national origin, gender, sexual orientation, age, disability, veteran status, or any other legally protected status.

• Support the implementation, optimisation, and transformation of Power Platform initiatives. • Join our team in India. This could be a remote role too anywhere in India.