Top Software Engineer Jobs in Spain

As a Software Engineer II, you'll design, build, and maintain software while collaborating within a distributed system, ensuring quality and driving product features from development to production.

Owner of Atlassian and engineering-platform tooling: design, develop, administer and support enterprise Atlassian landscapes, drive Jira Data Center-to-Cloud migration, troubleshoot L2/L3 issues, build Python automation and internal apps, integrate CI/CD testing (Pytest, InSpec), deploy via ArgoCD/Helm to Kubernetes, consult stakeholders, and champion quality, compliance (GxP) and best practices across engineering teams.

Design, implement, and maintain embedded real-time firmware for robotics platforms; own firmware lifecycle from architecture through validation and maintenance; diagnose system-level issues using hardware debugging tools; collaborate with electrical, controls, and software teams; advise leadership on firmware strategy and technical direction.

Lead integration of LLMs and generative AI into production applications, implement RAG and prompt-engineering solutions, build CI/CD pipelines, collaborate with cross-functional teams, mentor engineers, and drive AI automation and platform improvements.

Build and own end-to-end features for Chainguard's AI-enabled CI/CD and supply-chain security products. Design, implement, and iterate on integrations like hardened GitHub Actions, container tooling, and agentic AI features. Drive architectural decisions, collaborate with Product and front-end teams, and ship secure, production-ready developer tools.

Develop and implement new client features and gameplay components for Asphalt Legends in C++. Collaborate with design, art, UI/UX, engine, and LiveOps teams, participate in technical discussions, iterate on features, and contribute to shared libraries (graphics, network, sound).

Design and build scalable software systems for an equity management and financial reporting platform. Responsibilities include developing core equity, reporting, AI systems, or tax capabilities; contributing to architecture and data model decisions; implementing reliable workflows and integrations; collaborating with product managers, designers, and engineers; participating in code reviews; and mentoring other engineers.

Develop and architect features for Malwarebytes Browser Guard, serving millions of users. Write high-quality, tested code; design integrations; collaborate with Product, UX, and QA; review code; mentor engineers; and support delivery of the product roadmap. The role emphasizes React, JavaScript/TypeScript, Go, debugging, system architecture, AI workflows, user-centric design, and strong communication.

Lead design and implementation of scalable test automation frameworks and tooling using Python. Build end-to-end automated testing infrastructure for distributed systems, collaborate with R&D and product teams, and apply networking and cross-platform (Linux/Windows) expertise to ensure software quality and integration across cloud-native environments.

Contribute to architecture and modernization of Advanced Tables for Confluence. Design and implement features, build integrations with Jira and cloud data sources, ensure quality, performance, security, and maintainability, troubleshoot complex issues, support escalated customer cases, and collaborate with cross-functional teams across the product lifecycle.

Design, develop, and deploy software interfaces and backend logic to manage end-to-end material flows. Diagnose and fix data flow interruptions, collaborate with end users to translate requirements, maintain documentation, and follow security best practices for data storage, transfer, and change control to maximize production line productivity.

Design and build AI-powered engineering platforms, application modernization workflows, developer tooling, and agentic AI capabilities. Develop React and TypeScript frameworks, analyze applications, generate migration plans, integrate source control and CI/CD, establish AI quality benchmarks, and partner with engineering teams to scale modern software delivery.

Design, develop, and maintain high-quality web applications using CodeIgniter and PHP. Collaborate with cross-functional teams to define and ship features, ensure application performance and quality, identify and fix bugs, and maintain code quality and automation.

Lead architecture and hands-on delivery of a next-generation personalisation engine and backend platforms enabling real-time, individualised customer experiences. Provide technical leadership across microservices, event-driven systems, APIs, data integrations, CI/CD and cloud infrastructure while mentoring engineers and collaborating with product and senior stakeholders.

Leads the design and delivery of scalable, secure software for business lending. Responsibilities include decomposing monoliths, developing microservices and event-driven systems, setting architecture, solving complex technical problems, contributing code, resolving production issues, mentoring engineers, influencing cross-functional decisions, and applying AI-assisted engineering practices.

Design, integrate, and validate software/feature blocks by reviewing requirements, performing robust design and validation, supporting technical architecture and standards, running simulations/coding/tests, performing worst-case/statistical and thermal analyses, supporting design reviews with suppliers, reporting task progress, and escalating risks.

Build and maintain scalable backend services and web ecosystem components for a high-throughput ad-tech platform. Integrate Agentic AI (LangChain, AWS Bedrock), ensure cloud security (AWS WAF, CloudFront), own features end-to-end from architecture to deployment, and collaborate across teams to preserve data integrity and performance.

Lead design and delivery of scalable web and backend systems for CommSec. Drive architecture, mentor engineers, collaborate with product/design/ops, champion best practices, and ensure reliability, security, and performance across TypeScript/React frontends and C#/.NET Core APIs backed by MSSQL or similar databases.

Build and enhance GraphAware Hume, a graph-powered analytics platform. Responsibilities include developing APIs, designing secure and scalable access-control systems, orchestrating workflows for graph analytics and real-time insights, optimizing application performance, contributing to architecture and technical design, and collaborating with distributed engineering teams.

Design, build, and maintain production-grade software for quantum and AI products; architect APIs and service-level systems; deploy and harden containerized applications; collaborate with ML, DevOps, and platform teams; mentor engineers; and solve high-value industry problems for enterprise customers.

The Backend Engineer will develop and maintain features for Restream web services, design backend APIs, ensure infrastructure resilience, and contribute to a collaborative team environment.

Design and implement CI/CD pipelines, internal PaaS tooling, virtualized test environments (containers and hypervisors), IaC automation, and optimize virtual networks and DDS middleware. Produce platform documentation and enable developer self-service.

Build high-throughput, low-latency backend applications and scalable microservices for Vonage’s RCS communications platform. Develop well-tested, maintainable Kotlin and Java systems; collaborate cross-functionally; estimate and implement features; design testing strategies; and deploy services using modern cloud, containerization, messaging, caching, monitoring, and observability technologies.

Develop and optimize Soroban smart contracts and integrate anchor services on the Stellar network for cross-border payment solutions. Collaborate with cross-functional teams, test and debug smart contracts, document development processes, provide technical support, and stay current with blockchain and payments technology trends to ensure secure and efficient implementations.

Implement and optimize EVM-compatible features, reduce gas usage, develop and test smart contracts, collaborate on Ethereum infrastructure, and provide technical support.