Staff Software Engineer - DaaS / APIs / MCP

Job Description

Cognism is one of Europe's leading B2B Sales Intelligence platforms. Our mission is to help revenue teams find, enrich and engage the right customers through trusted, compliant and high-quality data. As part of our R&D transformation we are investing in a new Warsaw Engineering Hub that will become one of Cognism's two primary technology centres.The OpportunityThis is not a traditional Staff Engineer position. You will become one of the founding senior technical leaders responsible for shaping the architecture, engineering standards and technical culture of the Warsaw Hub. You will work on the strategic DaaS, API and MCP platform that enables enterprise customers and AI agents to consume Cognism data at scale.What You Will OwnTechnical ownership of critical platform capabilities across multiple engineering teamsArchitecture of distributed backend systems supporting APIs, MCP and enterprise integrationsEngineering standards covering code quality, reliability, observability and maintainabilityMentoring Senior Engineers and acting as a technical advisor for Engineering Managers and Product ManagersDriving architectural decisions balancing customer value, scalability and operational simplicityWhat Success Looks Like After 12 MonthsKey platform capabilities delivered to productionMeasurable improvements in reliability, scalability and engineering velocityArchitecture decisions documented and adopted across teamsWarsaw Hub recognised for engineering excellence and technical leadershipRequired Experience8+ years building large-scale backend systemsStrong software architecture experience in distributed systemsHands-on expertise with cloud platforms (AWS preferred)Experience with event-driven architectures, APIs and microservicesExcellent communication and mentoring skillsAbility to influence without formal authorityPreferred ExperienceKafka, Kubernetes, TerraformScala, Java, Kotlin or modern TypeScript/Node.jsObservability platforms such as Grafana or PrometheusAI-assisted software development using Claude, GitHub Copilot or similar toolsWhy Join CognismJoining now means becoming part of the founding engineering team building Cognism's Warsaw Hub from the ground up. You will influence technology choices, engineering practices and organisational culture while solving complex data-platform challenges with direct business impact.Our Hiring ProcessRecruiter conversationHiring Manager interviewTechnical architecture interviewSystem design sessionLeadership conversation