Top Software Engineer Jobs in Valencia

Design and evolve core control, data, and observability systems; implement resilient region-spanning architectures; build libraries, protocols, and tooling; diagnose and harden critical paths using metrics, tracing, and testing; and shape platform capabilities across identity, scheduling, observability, and distributed state management.

Design, implement, and manage LiveKit's infrastructure, focusing on performance, reliability, and automation while ensuring effective incident management and coordination with vendors.

The role involves designing and evolving core systems at LiveKit, implementing resilient architectures, and building tools to enhance system reliability and developer speed. Strong distributed systems experience and programming skills are essential.

Design, implement, and operate low-latency, highly available distributed control, data, and observability systems. Build region-spanning architectures, libraries, protocols, and tooling; diagnose and harden critical paths using metrics, tracing, testing, and real traffic; and shape platform capabilities around identity, scheduling, observability, and distributed state management.

Design and implement scalable backend services and APIs with tight AI/LLM integration. Collaborate with product and data science teams to operationalize models, deploy microservices (Docker/Kubernetes), maintain CI/CD and reliability, mentor junior engineers, drive technical best practices, ensure security and compliance, and lead feature development and documentation.

Design, implement, and maintain scalable backend services and APIs with LLM/AI integration. Collaborate cross-functionally to operationalize AI models, lead projects, mentor engineers, ensure reliability, security, and CI/CD-driven deployments, and drive technical best practices.

Work as a Senior Software Engineer on a large-scale Ruby on Rails product: collaborate with product, implement and review code, prepare integration plans and estimates, run tests, and help define the roadmap while supporting rapid experimentation and scaling.

Lead the development of Runware's serverless platform by building core systems for AI workload management and providing technical guidance to the team.

The Senior Software Engineer will design and implement systems for AI integration, build scalable backend services, and mentor team members, ensuring high-quality systems that meet user needs.

As a Senior Software Engineer, you will develop and manage a MongoDB solution on various platforms, ensuring reliability and security while contributing to a small team focused on impactful projects.

The Senior Software Engineer will build integrations with external APIs, optimize code performance, and maintain testing protocols. A focus on backend development is essential.

The Staff Software Engineer will design and manage end-to-end data pipelines, ensuring data quality and governance while collaborating across Java and Python systems, including event schema design and AI tooling.

Join a remote EU-based game studio talent pipeline as a senior C++ engineer working in custom engines or UE5. Maintain and develop game features and tools, collaborate across disciplines, and regularly debug, profile, and optimize code. Candidates may be contacted for future openings and will complete a technical test.

Lead the technical direction and implementation of Grafana's authentication systems (OAuth/OIDC/SAML/LDAP/SCIM). Build and operate low-latency, high-throughput Go services, drive cross-team architecture, mentor senior engineers, and ensure reliability, security, and scalability of identity at edge.

As a Senior or Staff Software Engineer focused on SRE, you will optimize performance, manage infrastructure with code, drive observability, and collaborate with teams to enhance system reliability and efficiency.

Build production-grade AI agent infrastructure for Fever’s Product Engineering organization, including agent harnesses, sub-agents, guardrails, evaluations, knowledge bases, cloud development environments, CI/CD delivery systems, observability, and measurement platforms. Optimize AI workflows for quality, speed, and cost while improving planning, coordination, and communication across engineering squads. Own backend systems end to end and establish engineering standards for reliable production software.

Design, develop, and maintain high-quality software for automated document-processing products. Collaborate with stakeholders to translate business needs into product improvements, contribute to architecture and technology decisions, conduct code reviews, optimize scalability and performance, lead major technical initiatives, mentor teammates, and improve engineering practices.

Build and improve Restream’s web interfaces and user-facing features for the AI Clips team. Design UI and business logic, collaborate with product designers, participate in code reviews, improve system reliability, and evaluate emerging technologies. The role requires strong JavaScript and TypeScript expertise, advanced React knowledge, CSS preprocessor experience, and familiarity with backend development, cloud infrastructure, containers, and continuous deployment.

Execute and improve manual and automated Android test cases, find and track defects, collaborate with Agile teams, enhance test coverage and QA processes, and mentor peers to ensure mobile app quality.

Design, build, and operate backend services for the orchestration engine and automated decisioning pipeline. Deliver orchestration features, improve resilience (idempotency, backpressure, retries), maintain observability, participate in on-call rotations and incident response, and drive engineering quality via code reviews, CI, documentation, and mentoring.

Lead design and ownership of shared libraries, Spring Boot starters, and agentic frameworks. Set standards for agent orchestration, evaluations, and guardrails. Mentor teams on Python-based agents (LangChain/LangGraph), drive adoption, prototype research directions, and improve developer experience across Kotlin backend and client libraries.

Join Grafana Labs as a Staff SRE focused on database products (Mimir, Loki, Tempo, Pyroscope) to own production reliability for high‑SLA customers. Partner with product squads, design and implement automation and SLOs, lead incident response and post-incident reviews, improve observability and alerting, and drive scalable, fault-tolerant solutions and reliability engineering best practices.

Leads architectural and code-level performance engineering for Elasticsearch, from design through production. Develops performance models, profiles distributed systems, identifies bottlenecks, optimizes logging, metrics, vector search, and ES|QL, and builds benchmarking and regression-detection automation. Drives AI-assisted optimization harnesses, collaborates across engineering teams, establishes performance-focused practices, and mentors engineers. The role requires deep Java, JVM, concurrency, distributed systems, benchmarking, and large-scale data-store expertise.

Architect and build production AI-powered HR systems using agentic workflows, multi-agent systems, APIs, and workflow automation. Integrate Workday and other HR tools, implement governance, audit logging, privacy controls, and human approval gates, and ensure reliable payroll-adjacent workflows. Document solutions, train People team users, drive adoption, and measure automation impact. The role requires strong software engineering, AI application development, HR technology, Workday, data privacy, and workflow automation experience.

Senior software engineer responsible for designing, developing, and maintaining business-critical applications. Collaborate with product, QA, DevOps, and stakeholders to translate requirements, implement scalable Java/Python solutions on AWS, address technical debt, improve performance, participate in code reviews, support releases, and ensure application stability and continuous improvement.