Top Software Engineer Jobs in Seville

As a Staff Full Stack Software Engineer, you'll guide technical strategy, mentor engineers, and ensure quality in full stack development while collaborating across teams.

Develop and enhance MAAS core components, improve architecture, collaborate across teams, and ensure high standards in documentation and CI practices.

Lead development of vector similarity search capabilities in Elasticsearch, including designing algorithms and data structures, implementing modern Java features, improving search relevance and performance, fixing bugs, and collaborating with a globally distributed engineering and open-source community. Own technical initiatives from design through delivery, guide cross-functional projects, and serve as an expert on Elasticsearch vector search.

Lead development of Elasticsearch vector search capabilities, including designing and implementing new features, algorithms, and data structures; improving search relevance, speed, and scalability; fixing complex bugs; and contributing to Apache Lucene. Collaborate with a globally distributed engineering and open-source community, provide technical leadership, review code, and guide cross-functional initiatives. Develop modern Java software and independently drive projects from technical design through delivery.

Lead Elasticsearch search relevance and vector search initiatives, designing and implementing new search features, algorithms, and data structures in modern Java. Improve performance, scalability, and relevance; resolve complex bugs; collaborate with a globally distributed engineering and open-source community; review code, guide technical decisions, and own projects from design through delivery.

Lead Elasticsearch search relevance initiatives, designing and implementing search features, algorithms, and data structures while resolving complex bugs. Improve vector search capabilities, performance, scalability, and code quality using modern Java. Collaborate autonomously with globally distributed engineers and open-source contributors through design, code review, issue triage, and cross-functional initiatives.

Lead development of Runware’s AI platform, including scalable backend APIs, SDKs, developer tools, and inference orchestration systems. Design high-performance distributed architectures, optimize image and video model integrations, improve reliability and observability, shape technical direction, and mentor engineers. Collaborate across platform, infrastructure, and product teams to deliver robust developer experiences and maintainable systems.

Design, build, and own scalable backend services, APIs, and high-performance web frontends for an autonomous procurement platform. Improve reliability, security, and performance, implement async task pipelines, and collaborate with product and design. Mentor juniors, participate in code reviews, and leverage AI-assisted tools while shipping iteratively in a globally distributed, async-first team.

Lead technical direction and hands-on execution for major products and systems. Design scalable backend, frontend, API, database, and cloud solutions; write and review code; make architecture trade-offs; resolve production issues; improve testing, security, observability, and engineering practices; lead critical initiatives and mentor engineers across distributed international teams.

Lead technical direction and hands-on execution for major software products and systems. Design scalable backend, frontend, API, database, and infrastructure solutions; write code; make architecture trade-offs; resolve production issues; improve engineering quality; lead critical initiatives; and mentor engineers across distributed international teams.

Owns technical direction and execution for major products and systems. Designs scalable, reliable architectures across backend, frontend, APIs, databases, and infrastructure; writes code; leads architecture decisions; resolves complex production issues; improves engineering quality; drives critical initiatives; and mentors engineers across teams.

Design and evolve core cloud platform services, control-plane components, and internal APIs. Build platform abstractions, drive architectural initiatives (gRPC migration, eventing), write production-grade Go code, improve scalability and developer experience, and support production systems and incident response when needed.

Design and evolve core cloud platform services, control-plane components, internal APIs, and platform abstractions. Build production-grade Go services and tooling, drive architectural initiatives such as gRPC migration and eventing foundations, and improve scalability, reliability, and developer productivity. Collaborate across engineering teams, support production systems and incident response, and drive long-term technical solutions for managed cloud and enterprise deployments.

Design and scale backend systems, APIs, and services for Nango’s open-source developer infrastructure platform. Build APIs, SDKs, UIs, and runtime systems, optimize performance and reliability, solve integration challenges with customers, shape the roadmap, and maintain the open-source repository. The role requires strong ownership, product thinking, developer empathy, communication, and autonomy in a remote-first startup environment.

The Fullstack Software Engineer will design and build the core billing platform, handling payments and transactions while ensuring system scalability and reliability.

As a Fullstack Software Engineer, you will develop the core billing engine, ensuring accurate transaction processing, integrating with systems and platforms, and collaborating with teams to maintain a unified platform experience.

As a Fullstack Software Engineer, you'll engineer systems for payroll and benefits, automate workflows, and collaborate with HR teams to improve user experience. You will work with modern technologies to simplify complex business processes.

The Senior AI & Computer Vision Software Engineer will work on innovative software solutions, bridge research and production, and mentor others while working in an Agile environment.

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.

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.

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.

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.

Build and maintain high-security mobile wallet apps using React Native, Swift, or Kotlin. Implement biometric authentication and secure key storage, collaborate with cross-functional teams, debug performance issues, and propose UX and security improvements.