Top Software Engineer Jobs in Valencia

Build and maintain high-volume payment services, write testable code, improve reliability and performance, investigate production issues, collaborate across product and engineering teams, and explore AI-enabled engineering tools to boost productivity.

The Software Engineer will join a product squad to develop and maintain functionalities on the 360Learning platform, focusing on JavaScript technologies and clean architecture.

Build scalable backend systems and data pipelines to power consumer credit reporting. Partner with Product, Compliance, Servicing, and Credit teams to design, deliver, monitor, and operate accurate reporting systems, including on-call responsibilities. Develop robust, well-tested code in Python or Kotlin using distributed systems patterns and technologies like AWS, MySQL, and Spark.

Build end-to-end full-stack AI features on a Ruby on Rails backend and React frontend, design and run experiments (A/B tests and AI evaluations), implement AI infrastructure for reliable LLM inference, and iterate quickly to scale production-ready LLM-powered products.

Design, build, and maintain backend integrations connecting a public safety platform to third-party systems (REST, SOAP, GraphQL). Develop integration workflows in Java/Spring Boot, write tests, debug production issues, contribute documentation, and collaborate across product and engineering teams to deliver scalable, secure cloud-based integration solutions.

As a Senior Software Engineer, you will enhance the REDAPL platform, leading initiatives in data ingestion, processing, and supporting infrastructure-related projects while mentoring other engineers.

Develop and maintain embedded Linux applications for electrical power devices, implement web services (backend and UI), deploy on Linux, enforce security measures, follow QoS processes, use GitLab/Redmine, participate in Agile ceremonies, and support testing, documentation, and mentoring.

Develop and maintain embedded Linux applications for electrical power devices, including kernel modifications, backend (Python/Flask) and frontend (HTML/CSS/JS/Vue) work, web services for remote control, security implementation, deployment on Linux, code review and versioning (GitLab/Redmine), sprint participation, documentation, testing at customer sites, and mentoring junior engineers.

Lead organization-wide software and AI engineering strategy, architect large-scale data and LLM integrations, drive deployment and CI/CD practices, mentor technical leaders, and convert prototypes to production while ensuring AI evaluation, observability, and high code quality.

Lead design and delivery of real-time fraud decisioning services and APIs, extend decisioning platform to international markets, integrate regional risk vendors and ML/AI signals, own platform tooling and availability, mentor engineers, collaborate cross-functionally, and participate in on-call rotation.

You will lead engineering efforts for backend system development, collaborate with global teams, ensure operational availability, and develop talent on your team.

As a Senior Software Engineer, you will lead backend development for the Merchant Data Platform, mentor junior engineers, ensure system reliability, and collaborate in product development. Your role involves project management, technical planning, and maintaining high availability of services.

Drive end-to-end performance and scalability testing for NVIDIA DGX Cloud across Kubernetes and NVIDIA components. Develop automated workload tests, monitoring and CI/CD frameworks, triage complex distributed-system issues, collaborate with customers and upstream open-source communities, and document and present findings.

Lead full-stack development of cloud-native SaaS transportation solutions: prototype, design, build and deploy responsive React front ends and scalable C#/.NET back ends, implement REST APIs, optimize performance/security, use AI-assisted coding, and operate CI/CD and cloud infrastructure (Azure/Docker) in an agile international team.

Lead and deliver backend features for Repayment Scheduling: design and implement highly available distributed systems, collaborate with product/design/analytics, own operational reliability and on-call duties, mentor engineers, set quality standards, and drive technical decisions and delivery.

Design, operate, and improve secure, scalable Kubernetes-based cloud platforms and GitOps deployment pipelines. Build IaC and automation (Terraform), enhance CI/CD, observability, reliability, and cost efficiency, lead production incident investigations, and collaborate with DevOps, SRE, software, data, AI, and security teams.

Build and own end-to-end features across backend and frontend: design backend services and data models (Python/Django), implement RESTful APIs, create reusable frontend components (TypeScript/React), write tests, participate in code reviews, maintain production reliability and security, and collaborate with product and design.

Develop and maintain C# applications, design robust solutions with the team, write unit tests and occasional end-to-end test plans, conduct code reviews, and diagnose and resolve technical issues to ensure code quality and reliability.

Drive performance and scale characterization for NVIDIA DGX Cloud across Kubernetes and NVIDIA components. Build automated tests, monitoring, and CI/CD for large-scale GPU-accelerated workloads. Triage and resolve distributed systems performance issues, collaborate with researchers and upstream open-source communities, and present findings at conferences.

Build and maintain reliable API integrations with EV chargers, vehicles, and OEM platforms. Improve connectivity platform reliability, observability, and scalability. Develop automations and internal tools, define SLAs and monitoring, reduce incidents, and collaborate across teams to support Enode's energy device integrations.

Own and deliver backend identity systems for international markets, shaping technical direction, designing distributed, highly available services, and collaborating with product, design, and analytics. Improve reliability, performance, and operational health; participate in on-call rotation; set code and design standards; mentor and grow engineers; reduce toil and create runbooks/playbooks. Drive cross-team collaboration to meet regulatory and market-specific identity/KYC requirements.

Develop and integrate Python-based AI/ML backend solutions. Design, implement, test, and optimize scalable services; collaborate with data scientists to deploy models; improve performance and development processes; work with DevOps and cloud ML tooling.

Design and implement Python-based AI/ML software, build scalable services, integrate models with existing systems, optimize performance, and improve development processes in collaboration with data scientists and developers.

Build and scale a blockchain data platform handling petabytes of on-chain data. Design and implement distributed systems, data ingestion/decoding pipelines, and performant SQL processing. Write production code (Kotlin, Go, Java, Rust), improve developer experience, automate operations (including AI-driven automation), and own platform components.

Lead and deliver Repayment UX features for Affirm's mobile products using React Native. Own quarterly goals, guide engineers through ambiguous problems, collaborate with product/design/analytics, ensure operational reliability (metrics and on-call), improve engineering standards, and mentor teammates to drive high-quality, scalable mobile experiences.