Top Tech Jobs & Startup Jobs in Lisbon

Lead architecture and implement core low-latency Syncro systems in Rust. Optimize validator submission paths, networking (QUIC/TCP), co-location, HA, automation, observability, and multi-region bare-metal/cloud deployments while owning latency/uptime SLOs.

As a Senior Blockchain Engineer, you will design and optimize smart contracts and blockchain infrastructure, collaborate with teams to ensure secure solutions, and lead development efforts in the DeFi ecosystem. You will analyze technologies, mentor staff, and enhance performance while maintaining security best practices.

Identify and validate high-value AI use cases for financial services, lead discovery workshops, build ROI-driven business cases, map and redesign workflows, define technical requirements and acceptance criteria, prototype solutions with no-code tools, implement AI governance and ontologies, and ensure business-aligned delivery and compliance.

The Legal Counsel will provide strategic legal advice across financial products and partnerships, focusing on regulatory compliance, risk management, and supporting growth in cross-border payments and cryptocurrency solutions.

Zartis is seeking talented individuals for various roles in a distributed team focused on developing new technologies. Candidates should have good communication skills, be proactive, and experienced in building software from scratch.

Cracken seeks candidates passionate about offensive security to join a remote, high-autonomy team at the intersection of AI and cybersecurity. Candidates will collaborate with founders and senior engineers, take ownership of core security product work, and shape their role based on skills and drive.

The role involves designing, developing, and maintaining high-throughput systems for the billing platform, collaborating with teams, leading technical discussions, and mentoring other engineers.

As a Founding Sales Development Representative, you will identify and book meetings with prospects, driving Tremendous' expansion into Europe through cold calling and collaboration with Account Executives.

Lead and evolve Android architecture and mobile platform foundations, design durable production systems, improve reliability and delivery practices, define mobile-facing contracts with cross-functional partners, and raise engineering standards through reusable patterns, validation, and AI-enabled testing.

Own and lead enterprise collaboration platforms (Google Workspace, Slack, Atlassian, Zoom, Okta), driving architecture, integrations, governance, security, licensing, AI enablement, automation, training, and cross-functional rollout to improve productivity and platform health.