Top Software Engineer Jobs in Lisbon

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.

Build and maintain fullstack identity verification systems using React/TypeScript and backend languages (Python/Kotlin/Ruby). Design scalable APIs and microservices on cloud platforms, improve reliability and security, mentor engineers, drive architecture and deliver privacy-compliant features end-to-end.

Build and ship production-quality React components, turn ambiguous product problems into testable specs, run end-to-end workflows, own production deployments and debugging, ensure architectural consistency, optimize browser performance and accessibility, and integrate reliably with backend and third-party systems.

Design and ship production-quality React frontend features: translate ambiguous product problems into testable specifications, run and review AI agent workflows, debug and root-cause production issues, write accessible HTML/CSS, integrate with backends, and own end-to-end delivery including tests and deployment.

Design, develop, and maintain Entrust's iOS SDK for document capture. Implement camera capabilities, on-device image processing and ML, integrate RESTful APIs, improve CI/CD and test automation, collaborate with product and design to deliver accessible, high-quality SDK features across devices.

Join Dashlane as a Backend Software Engineer, focusing on feature development and improving customer experiences in a collaborative team environment using NodeJS and Typescript.

Design, build, and evolve scalable frontend features and shared UI libraries using React and TypeScript. Lead cross-team frontend initiatives, architect micro frontend platform with module federation, maintain monorepo structure and tooling, and own CI/CD pipelines (GitHub Actions). Use AI-assisted and agentic tools as a core part of the development workflow.

Fullstack engineer (backend-focused) building synthetic testing, evaluation frameworks, and validation tools for AI agents. Develop APIs, event-driven systems, data workflows, and user-facing tools while collaborating with product, design, data, and ML teams to ensure reliability, performance, and product-quality delivery.

Design, develop, and maintain full-stack SaaS software using .NET/C#/ASP.NET and Angular; build high-performance database solutions (SQL Server, PostgreSQL); participate across the SDLC including coding, testing, deployment, monitoring, troubleshooting, code reviews, documentation, and cross-team collaboration in a hybrid Lisbon role.

The Senior iOS Engineer will lead engineering decisions, ship production code for the iOS app, maintain app architecture, and contribute to product discussions in a fast-paced, remote work environment.

Design, implement, and operate scalable event-driven backend services on AWS (primarily serverless). Build APIs, model relational and NoSQL databases, own IaC and CI/CD pipelines, instrument observability, and collaborate in Scrum. Advocate for code quality, testing, and AI-assisted development tooling.

Design and implement scalable event-driven backend services on AWS using Lambda and serverless patterns. Own infrastructure as code, build secure REST/GraphQL APIs, optimize CI/CD pipelines, model relational and NoSQL databases, and instrument systems for observability. Contribute in Scrum, drive architecture decisions, and promote AI-assisted development tooling.

The role involves developing GPU Monitoring features, maintaining eBPF functionality, investigating production issues, and contributing to architectural decisions in Datadog's eBPF platform.

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.

Design and build cloud-native, event-driven backend services in Java. Develop distributed microservices, implement messaging with brokers (Kafka/NSQ/RabbitMQ), participate in code reviews, documentation, and create tools/libraries for the microservices ecosystem.

The Senior Software Engineer will enhance the REDAPL platform by building a query engine, leading projects, and driving architectural decisions while collaborating with product teams.

Develop and maintain automated tests and test frameworks for Veeam products, collaborate with development teams, build and manage test infrastructure, analyze source code and test results, and maintain defect databases.

Develop, test, and maintain Mimo/Mobilix applications; collaborate on requirements and architecture; implement integrations and APIs; follow DevOps/CI/CD, version control, security, and documentation best practices; support continuous improvement and system stability.

Design, develop, test, and deploy features in .NET Core/.NET Framework. Migrate from .NET Framework to .NET Core, optimize SQL queries and distributed cache performance, implement observability (OpenTelemetry, OpenSearch, Prometheus), create/consume NuGet packages, perform code reviews and automated testing, and provide third-line production support.

Develop, review, and refactor clean, scalable C#/.NET code in a SaaS environment. Mentor junior engineers, implement unit tests, monitoring/alerting, and produce technical documentation while collaborating on product quality, security, and performance improvements.

Maintain and evolve the FileNet application: perform functional and technical analysis, develop and implement solutions, design and execute test cases, validate functionality, and monitor testing cycles to ensure quality and performance.

Build, deploy and maintain production infrastructure tooling and automation to support scalable, highly available services; develop observability, orchestration, backup/disaster recovery systems; improve deployment CI/CD and integrations with cloud and third-party infrastructure for customer and internal SRE teams.

The Software Engineer will support data collection for model training, manage ingestion pipelines on GCP, and collaborate with data scientists to enhance dataset quality and scale.

The Senior Software Engineer will collaborate to design and implement scalable applications, focusing on backend development with Java and Spring Boot while ensuring high-quality code and a strong user experience.

Software Engineers at SingleStore work on real-time technology, responsible for new and existing projects, collaborating across teams, and contributing to the product lifecycle.