Empleos de remote senior security engineer open-source browser en Valencia

Mozilla Corporation is seeking a Senior Software Engineer to advance Firefox security. You will design, implement, and ship security features for enterprise users, contribute to Firefox security architecture across multiple OS, and collaborate with cross-functional teams.You’ll bring 3+ years in low-level software, strong C/C++, knowledge of security...

Mozilla seeks a Senior Software Engineer for AMO, delivering features and platform modernization across Python/Django-based systems.You'll drive architectural improvements, enhance automated moderation pipelines, and collaborate with engineers, reviewers, and community contributors to ship reliable software used by millions.You'll contribute to CI/CD...

Mozilla is seeking a Senior Software Engineer to join the Privacy Team and advance the Firefox Web Platform. You will work on privacy protections, anti-tracking, and threat intelligence, contributing to Gecko and the broader browser stack. This role supports a remote arrangement within Spain, collaborating across Europe and the US. Ideal candidates have 4+...

Jobgether is seeking a Senior Product Manager based in Europe to shape the vision and strategy of open-source smart home projects. You will oversee initiatives across home automation, voice technology, music experiences, and connected devices, translating community feedback into opportunities and guiding discovery through delivery.You will collaborate with...

Mozilla Corporation is seeking a Senior Software Engineer to join the Privacy Team and help advance the Firefox Web Platform by implementing privacy protections, anti-tracking, and threat intelligence features that safeguard user data. You will work on Gecko architecture, contribute high‑quality C++, JavaScript, and Rust code, and collaborate with a...

CloudLinux is a global remote‑first company driven by our principles: do the right thing, employees first, we are remote first, and we deliver high‑volume, low‑cost Linux infrastructure and security products that help companies to increase the efficiency of their operations. Every person on our team supports each other and does what we can to ensure we...

Filigran is seeking a Senior Software Engineer who is AI-first and hands-on, capable of driving AI-native engineering across our XTM Foundation. You will experiment with AI coding tools, build guardrails for safe deployment, and work with multiple product teams to embed AI into daily workflows.You will help the organization scale AI practices, contribute to...

EverAI Limited is building the future of AI companionship with a fast-growing, globally distributed team. Our LLMs power a consumer-facing platform used by millions, and you will own end-to-end model development from post-training to production.You will work with Marco and the CTO across data, evals, and model behavior to push personalization, multilingual...

Jobgether is partnering with a global, remote-first team to hire a Senior Web Browser Researcher based in Spain. You will investigate browser behavior, develop automated research tools, and collaborate with product and engineering to translate findings into actionable priorities.Lead research from hypothesis to validation, mentor peers, and contribute to...

Wire is seeking a Senior Product Security Engineer to join our Information Security Team in a remote EU setup with periodic travel to Berlin. You will drive product and platform security across authentication, encryption, data handling and APIs, working closely with engineering, product, and other teams.You will review changes for security or privacy...

intro is partnering with a major international fintech to recruit a Senior Security Engineer. You will shape security architecture across multi-cloud environments, driving AI-enabled threat detection, security automation and zero-trust principles.You'll own cloud security design, threat monitoring, and secure-by-design engineering, collaborating with...

Software Engineer (Open Source Contributor)Position: Software Engineer (Open Source Contributor)Type: ContractorCompensation: $50–$100/hourLocation: Remote — WorldwideAbout the OpportunityWe’re seeking experienced software engineers and open-source contributors to create realistic coding challenges that help train next-generation AI systems. You’ll...

CloudLinux is a global remote‑first company driven by our principles: do the right thing, employees first, we are remote first, and we deliver high‑volume, low‑cost Linux infrastructure and security products that help companies to increase the efficiency of their operations. Every person on our team supports each other and does what we can to ensure...

Grafana Labs is seeking a Senior Software Engineer focusing on Security Assurance to advance our security observability, compliance, and control management across a cloud-native SAAS platform. This is a remote-first role with opportunities to collaborate across teams and auditors.You will build automation for security programs, integrate controls into SDLC,...

Metricool is seeking a Senior Security Engineer to own application, cloud and AI security in a fully remote role. You will protect its monolith (JavaEE, Spring Security, Vue) and AWS infrastructure while shaping compliance for ISO 27001 and SOC 2.You’ll collaborate with senior developers to integrate security into the development process from the start,...

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Web Browser Researcher based in Spain.Join a fully remote, globally distributed team developing advanced device intelligence and fraud-detection technology. As a Senior Web Browser Researcher, you will investigate browser...

Senior Software Engineer, Security Assurance | Spain | RemoteSpain (Remote)Grafana Labs is the company behind Grafana Cloud, the fully managed observability platform trusted by more than 10,000 organizations to ensure reliability, resolve incidents faster, and optimize telemetry at scale. Built on open source and open standards and designed for...

If you love getting hands-on with web security, cloud infrastructure and the emerging risks of AI and LLM integrations, you’ll feel right at home with us. At Metricool you will be able to do so with real ownership over how security and compliance get built into the product, not just audited after the fact. You will have the possibility to work 100%...

Senior Software Engineer, Firefox Securityat Mozilla CorporationTeam: FirefoxLocations: Remote Sweden, Remote UK, Remote France, Remote Germany, Remote Finland, Remote Belgium, Remote Spain, Remote NetherlandsWhy Mozilla?Mozilla Corporation is the non?profit?backed technology company that has shaped the internet for the better over the last 25 years.We make...

CloudLinux is a global remote?first company driven by our principles: do the right thing, employees first, we are remote first, and we deliver high?volume, low?cost Linux infrastructure and security products that help companies to increase the efficiency of their operations.Every person on our team supports each other and does what we can to ensure we all...