Top Tech Jobs & Startup Jobs in Lisbon

Own day-to-day finance operations for the Lisbon entity, including month-end close, AP/AR, payroll coordination, journal entries, reconciliations, SOX support, audits, and billing/Q2C integrity across Salesforce, billing systems and NetSuite. Drive automation, process improvements, support billing cycles and manual billing calculations using BI reports, and collaborate with HR, Legal, Procurement, FP&A, Dev, Bizapps, and global Finance teams.

The Manager, Product Architect will drive product innovation in digital authentication, design architectures, validate concepts, and guide delivery teams in aligning with Mastercard's standards.

Generate and qualify sales opportunities as the first point of contact, develop customer-centric sales skills, meet quota, manage leads and pipeline in SFDC, collaborate with sales stakeholders, and iterate team processes. Requires English and German and working from Lisbon (hybrid).

Join Cloudflare Research as a 12-week fall intern to work on systems-scale problems in security, privacy, and performance. Responsibilities include engineering, data analysis, protocol design, implementation, measurement, and open-source contributions. Projects may span AI/ML, distributed systems, trusted execution environments, cryptography, and networking protocols.

Serve as a senior technical advisor to enterprise customers: architect and optimize Cloudflare-based solutions (Workers, Workers AI), diagnose complex issues, manage IaC configurations (Terraform), and influence product roadmap while partnering with Sales, Support, Product, and Engineering to ensure security, scalability, and performance.

Lead design and development of low-level Linux instrumentation and runtime security technologies (eBPF) to detect threats and protect cloud-native workloads. Build reusable monitoring for process, file, and network visibility, drive end-to-end feature delivery, establish testing methodologies for reliability and performance, partner cross-functionally, and provide technical leadership and mentoring.

Lead day-to-day treasury operations across multiple European entities, managing cash positioning, liquidity, payments and reconciliations. Strengthen controls and governance, drive process standardisation and automation (SWIFT, APIs, Host-to-Host), enhance bank connectivity, support audits and month-end close. Build and coach a high-performing Treasury Operations team to scale operations across markets.

As a Business Travel Consultant, you'll deliver top-tier support for travel bookings, ensuring customer satisfaction, compliance, and providing feedback for product improvements.

Manage office administrative operations and front-desk reception; enforce security protocols; coordinate vendors, events, internal communications, and local culture initiatives; partner with People, Inclusion, IT, legal, and executive teams; streamline local processes and support branding and office projects.

Build end-to-end full-stack AI features on a Ruby on Rails backend and React frontend, including LLM inference infrastructure, RAG, AI agents, and evaluation/observability. Design and run experiments (A/B tests), optimize systems for production performance and reliability, and iterate rapidly with product and design partners.

Build and evolve Circle Discover marketplace features: high-converting purchasing flows, algorithmic recommendations, content feeds, and listings. Work across a Ruby on Rails backend and React/Next.js front-ends, optimize performance and SSR/SSG, collaborate with designers and leaders, and improve codebase quality while shipping at pace in a distributed remote team.

As a Staff Engineer for Revenue, you'll shape technical vision and architecture for billing and pricing systems, ensuring correctness while enhancing cross-team collaboration.

Lead Okta administration and SSO, build automations with Okta Workflows and Zapier, optimize SaaS spend and licensing, automate provisioning/deprovisioning via APIs, support and improve the macOS employee experience, triage IT issues, and manage SaaS tooling and reporting across the organization.

Serve as a senior network security domain authority to define network engineer personas and workflows, advise product and AI teams, validate agent behaviors across firewall, cloud/SASE, policy management, compliance, vulnerability management, and troubleshooting, and help build realistic enterprise test scenarios.