Principal Software Engineer I

Seeking a Principal Software Engineer for the Elasticsearch Distributed Systems team to enhance scale, performance, and resilience of cluster communication, data indexing, allocation, and replication.

Elastic, the Search AI Company, enables everyone to find the answers they need in real time, using all their data, at scale — unleashing the potential of businesses and people. The Elastic Search AI Platform, used by more than 50% of the Fortune 500, brings together the precision of search and the intelligence of AI to enable everyone to accelerate the...

ThreatDown is a leader in elite Managed Detection and Response (MDR), purpose-built to empower resource-constrained security teams with high-efficacy protection, without the complexity. As attacks grow faster and more automated, ThreatDown pairs proprietary AI and threat research with analyst judgment to deploy in minutes to deliver high-efficacy protection....

the company, the Search AI Company, enables everyone to find the answers they need in real time, using all their data, at scale — unleashing the potential of businesses and people. The the company Search AI Platform, used by more than 50% of the Fortune 500, brings together the precision of search and the intelligence of AI to enable everyone to accelerate...

Principal/Staff Software Engineer (AI & Healthcare) | Remote Europa Startup stealth de Healthcare AI, fundada por líderes com experiência em empresas tecnológicas de topo, procura engenheiros excecionais para construir agentes de IA de raiz. Procuramos: - Experiência em AI/ML, LLMs e sistemas de agentes - Background forte em Python e sistemas...

Location: Lisbon, Portugal / Krakow, Poland Working Pattern: Fully Remote (Portugal); Hybrid (Poland) Join our AI Delivery & Engineering team and provide principal-level technical leadership for reusable AI platform capabilities. You'll help partners assemble secure, scalable and maintainable enterprise AI solutions through clear standards and integration...

Updated: 07 July 2026 Freelance | 8–20 hrs/week | Remote (EU/UK) Are you an accomplished Principal Software Engineer passionate about shaping the future of artificial intelligence? Join 10x Team as a Freelance Principal Software Engineer – AI Trainer and leverage your technical expertise to enhance advanced AI models, all while enjoying the freedom of...

About the roleCyberhaven is redefining data security by tracing how sensitive data actually moves across endpoints, cloud, SaaS, and now AI tools and agents. Our AI Security team builds the backend systems that give enterprises real-time visibility and control over how their data flows into and out of LLMs, GenAI applications, and autonomous agents. We're...

Location: Lisbon, Portugal / Krakow, PolandWorking Pattern: Fully Remote (Portugal); Hybrid (Poland)Join our AI Delivery & Engineering team and provide principal-level technical leadership for reusable enterprise AI data and grounding capabilities. You'll help ensure AI solutions use secure, scalable, reliable and well-governed data foundations.Impact You'll...