Top Tech Jobs & Startup Jobs in Poland

Lead end-to-end workplace investigations across EMEA, produce reports and corrective actions, advise HR and business leaders on employee relations, develop ER processes and training, analyze ER trends, partner with legal and HR functions, and support organizational change and policy harmonization.

Design, build and operate backend services in AWS for a multi-service hospitality platform. Implement new features, payment and EPOS integrations, improve performance, monitoring and deployment automation using TypeScript/Node.js and databases like Mongo Atlas, Postgres RDS or DynamoDB. Collaborate in a UK development team and automate infrastructure, CI/CD and QA.

Own the architecture, operation, and scaling of Sezzle’s AWS and Kubernetes infrastructure. Design resilient cloud systems, optimize Aurora MySQL/PostgreSQL databases, improve reliability and observability, automate infrastructure with code, lead disaster recovery and incident response, and deliver measurable gains in performance, capacity, cost, and availability. Build AI-assisted SRE tooling with appropriate controls while partnering across engineering, security, compliance, and application teams.

Conduct advanced research in artificial intelligence and machine learning, including deep learning, graphical models, reinforcement learning, computer perception, natural language processing, and data representation. Define complex business problems, design and deliver modeling solutions, evaluate model performance, establish scientific and engineering specifications, and build analytical roadmaps. Assess production implementation requirements, improve data capture methods, apply statistical and mathematical techniques, and resolve root causes and process bottlenecks.

Provide high-level administrative support to a CEO of multiple early-stage tech startups: manage complex calendars across time zones, handle email, coordinate meetings and projects, maintain shared documents, track tasks and deadlines, assist with personal scheduling, streamline communication, and implement AI-driven workflow improvements.

Xfive is seeking talented professionals for web, e-commerce, project management, business development, design, and mobile development roles. Team members work on international projects, collaborate directly with clients, deliver high-quality work on schedule, and maintain clean, well-organized code where applicable. The company offers flexible hours, long-term opportunities, professional development, certifications, and a collaborative, open-minded culture.

Own product positioning, messaging, launches, customer feedback loops, case studies, sales materials, and cross-sell campaigns for an AI-powered B2B SaaS platform. Build the product marketing function from scratch, partner closely with Product, Sales, Customer Success, Growth, and leadership, and measure adoption, pipeline, and expansion outcomes. Maintain the company’s internal product knowledge base and serve as the product’s public-facing marketing representative.

Own ambiguous product problems end to end, from defining user flows and API contracts through frontend implementation, backend collaboration, testing, and production delivery. Review Haskell and React code, maintain performance, accessibility, SEO, and product quality standards, and use AI tools for prototyping, implementation, refactoring, debugging, and technical exploration. Work across product, UX, frontend, backend architecture, and AWS infrastructure in a remote-first environment.

Own the full customer lifecycle for a portfolio of accounts, including onboarding, implementation, adoption, renewals, and expansion. Build strategic customer relationships, identify risks and growth opportunities, drive product utilization, manage commercial conversations, and collaborate cross-functionally to improve customer outcomes and the Stadium platform.

Owns diagnosis and resolution of complex customer issues across a distributed database platform. Responsibilities include SQL and query performance troubleshooting, Linux administration, customer onboarding and deployments, managed database monitoring, root-cause analysis, documentation, technical escalation, and collaboration with Engineering. The role provides customer support through tickets, email, and phone, participates in on-call rotations, and uses AI-assisted troubleshooting.