Staff Software Engineer – DaaS / APIs / MCP

The role

You will be a founding senior technical leader 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 do

• Technical ownership of critical platform capabilities across multiple engineering teams
• Architecture of distributed backend systems supporting APIs, MCP and enterprise integrations
• Engineering standards covering code quality, reliability, observability and maintainability
• Mentoring Senior Engineers and acting as a technical advisor for Engineering Managers and Product Managers
• Driving architectural decisions balancing customer value, scalability and operational simplicity

Required qualifications

• 8+ years building large-scale backend systems
• Strong software architecture experience in distributed systems
• Hands-on expertise with cloud platforms
• Experience with event-driven architectures, APIs and microservices
• Excellent communication and mentoring skills
• Ability to influence without formal authority

Nice to have

• AWS preferred
• Kafka
• Kubernetes
• Terraform
• Scala, Java, Kotlin or modern TypeScript/Node.js
• Observability platforms such as Grafana or Prometheus
• AI-assisted software development using Claude, GitHub Copilot or similar tools

About the company

Cognism is one of Europe's leading B2B Sales Intelligence platforms. The company is investing in a new Warsaw Engineering Hub that will become one of Cognism's two primary technology centres.