Empleos de senior javascript engineer en Valencia

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...

Scrambly S.r.l. is seeking a Senior Backend Engineer to help build the core systems behind Scrambly. You'll work on user-facing product systems and the internal platform, solving scalability challenges for a global, adtech product.You'll design and maintain scalable Node.js/NestJS RESTful APIs, mentor engineers, and collaborate with Product, Design and QA to...

UserWise, LLC is seeking a Principal Server Engineer to own our backend for live games with 1M+ DAU. You will design scalable Go/Python services, extend Nakama core game services, and drive performance improvements across PostgreSQL and in-memory stores.You will lead investigations, optimize distributed systems, and ensure reliability in production. The role...

Swiftly, Inc. is seeking an experienced Platform Engineer to help build the infrastructure underlying our transit data platform.You will modernize cloud infrastructure, expand to a new AWS region, standardize observability, and enable AI-assisted development lifecycle with automated checks. This role is cross-functional, gathering requirements across teams...

Elastic is seeking a Senior Information Security Infrastructure Engineer to own the data pipeline for security telemetry. You will ingest, process, and secure telemetry across Elastic clusters, ensuring end-to-end data quality and reliability.The role focuses on production-grade Elasticsearch operations, Kubernetes-based deployment, and automation using...

Trading 212 Ltd. is seeking a Senior Frontend Engineer to own complex frontend features across web and mobile. You will design and evolve React and React Native systems, build durable abstractions, and tackle rendering and performance bottlenecks with TypeScript.Collaborate with product, backend, and QA to deliver scalable user experiences while maintaining...

CONVOTIS Iberia busca un/a Mobile / SDK Engineer especializado/a en iOS para desarrollar y armonizar SDKs orientados a recopilación de datos en dispositivos Apple. Trabajarás en Speedtest y Umlaut, asegurando soluciones robustas y reutilizables.Se valorará experiencia en SDKs y librerías, así como capacidad para colaborar en proyectos complejos. Oferta...

Parser is seeking a Staff Backend Engineer (Java) to join a strategic area of our systems. You will drive architecture, champion engineering standards, and deliver high-scale services with asynchronous messaging and low latency. You'll work within lean teams and harness AI tools to enhance productivity and quality.You will shape decisions end-to-end, own...

King seeks a Senior Audio Engineer to join the Game Production core systems team. You will own the audio runtime, editor tooling, and APIs, shaping 3D audio, routing, and mixer architecture across mobile targets.You will mentor others, improve workflows, and collaborate with game teams to deliver high-quality, sonically rich experiences. You will work in an...

Utopiadesign is seeking dynamic Structural Design Engineers to support luxury hospitality projects worldwide, including boutique hotels and private villas. You will develop structural design solutions that balance aesthetics with safety and code compliance.You will collaborate with architects, interior designers, MEP engineers and clients, report to a...

Lever, Inc. is seeking a Lead Engineer/ Architect ( .NET ) in Spain to spearhead software architecture for an enterprise IoT asset tracking platform. You will balance hands-on coding with team leadership, shaping concurrent distributed systems using C# and .NET, and mentoring a global engineering team.Responsibilities include designing core platform...

UL Solutions in Spain is seeking a Senior Project Engineer - Heat Pumps to provide technical leadership in testing, certification, and evaluation of residential and commercial heat pump technologies.You will support customers and colleagues across performance, energy efficiency, and certification activities while helping shape the future of heat pump...

We’re Revolutionizing Energy to Change the World At Octopus Energy, we’re not your typical utility company. We’re a team of passionate people working every day to make energy 100% renewable, accessible, and fair for everyone. We believe technology and innovation are key drivers of change. Our mission is to transform the way the world consumes energy...

Signicat is hiring a Senior Java Cloud Developer to join our multinational team and contribute to the ReadID SaaS platform. You will build and improve secure, scalable server-side features, contribute to the roadmap, and help external developers use the ReadID API (REST/XML/JSON).You will also document APIs and participate in automated testing. The role...

Construo AG invites applications for a data-focused role shaping data models and pipelines in a multilingual, multinational setting. You will guide AI-generated code, ensure data quality, and explore new data sources while collaborating across teams.A strong foundation in data architecture, cloud infrastructure and agile tooling is expected. You will be...

Naphora Games Group is seeking a Senior Backend Engineer to design, build, operate, and scale robust backend systems and platforms. This fully remote role aligns with our Saudi working schedule (Sun–Thu, 9:00–17:00 KSA time).You will work across backend services, databases, and integrations, focusing on reliable, scalable solutions that support large...

Senior Microsoft 365 / Entra ID Engineer Spain Initial 6 Months We are looking for a Microsoft 365 specialist with strong expertise across enterprise messaging, collaboration and identity services. The role will focus on the ongoing administration, support and optimisation of Microsoft 365 environments, including Exchange Online, Share Point, Teams, Entra ID...

About the Team: Our Technology team drives the evolution of our Engineering, Data, Product and User Experience functions. Within this group, the GenAI Experiences team builds generative AI products that define the future of news and business intelligence for millions of users across the Wall Street Journal and Dow Jones brands. Through our Co-Engineering...

Location Barcelona (Hybrid / Flexible)Contract Type Contractor Full-Time / Enterprise Project EngagementAbout Xenon7 Where elite tech talent meets world-class opportunities! At Xenon7, we work with leading enterprise clients and innovative startups on high-impact projects across Data, AI, Cloud, and Software Engineering. Our expertise in AI solution...

OverviewJoin to apply for theFull Stack Engineerrole atBrainRocket . BrainRocket is a global company creating end-to-end tech products for clients across Fintech, iGaming, and Marketing. Young, ambitious, and unstoppable, we\’ve already taken Cyprus, Malta, Portugal, Poland, and Serbia by storm. Our BRO team consists of 1,300 bright minds creating...