Top Tech Jobs & Startup Jobs in Lisbon

Provides end-to-end technical support for Sardine’s API-driven risk and payment platform. Troubleshoots customer issues involving APIs, SDKs, web technologies, cloud infrastructure, and SQL; communicates resolutions across support channels; escalates bugs to engineering; creates documentation and support tools; and advocates for customer needs and product improvements.

Senior Software Engineer to design and implement C++/Python software, accelerate workloads with CUDA, develop and maintain Linux kernel modules and system services, optimize system and GPU performance, manage Linux systems, mentor junior engineers, and integrate AI technologies across products.

Staff Software Engineer responsible for designing, building, and operating distributed market data systems. The role focuses on real-time blockchain data ingestion, streaming, normalization, storage, APIs, reliability, data correctness, observability, incident recovery, and production support. The engineer will lead technical decisions, mentor teammates, translate ambiguous requirements into designs, and use AI-assisted development throughout the software lifecycle.

Own the architecture enabling AI-first product engineering, including agent-native standards, context infrastructure, self-healing incident workflows, autonomous agent features, and AI code review optimization. Ship full-stack product features, set technical direction, and partner with product and design teams. The role requires strong backend engineering, production LLM experience, distributed systems expertise, and practical use of AI coding tools.

Marketing and business development intern supporting market research, lead generation, outreach, pitch materials, campaign execution, competitor analysis, KPI reporting, funnel optimization, events, and partnership initiatives. The role is remote, part time, and unpaid, with mentorship and potential future employment based on performance.

Write and maintain technical documentation for web products, SDKs, and REST APIs using a docs-as-code workflow. Create Markdown and MDX content in Git repositories, support CI operations, test integrations, build documentation tools, and interview technical stakeholders. Own a significant documentation backlog and help shape the roadmap while advocating for clear, user-focused content.

Manage a portfolio of B2B energy-sector customers, serving as their primary contact for platform, data, and API questions. Provide first-level support, onboarding, training, knowledge-base content, account health tracking, QBR preparation, and product adoption support. Coordinate with technical, product, and commercial teams, contribute customer feedback to roadmap discussions, and support renewals and upsell opportunities. Success is measured through retention, account growth, and adoption.

Owns electrical engineering standards, reference designs, power architecture, and technical assurance across Volta’s global AI factory portfolio. Leads electrical design from concept through commissioning, covering utility interconnection, medium- and low-voltage distribution, UPS, generation, protection, and high-density AI/HPC power. Partners across engineering, procurement, technology, and operations, supports live projects, directs external design partners, and builds the electrical engineering team.

Own RemotePass’s Employer of Record product end to end, including employee lifecycle workflows, roadmap, customer discovery, compliance, benefits, internal tooling, and AI-powered operational systems. Translate country-specific employment requirements and operational feedback into scalable product experiences. Lead cross-functional execution across product, engineering, operations, payroll, and go-to-market teams in a distributed environment.

Own strategic healthcare accounts across the full sales lifecycle, including market insight, account planning, opportunity development, complex project closing, delivery coordination, collections, and growth. Build executive and stakeholder relationships, expand product, service, upgrade, digital, and lifecycle opportunities, and coordinate cross-functional resources to deliver integrated solutions and long-term customer value. Requires healthcare sales and account management experience, commercial insight, collaboration, channel management, and strong compliance awareness.