Top Software Engineer Jobs in Lisbon

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.

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.

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.

Build and maintain high-performance embedded applications for Intel and ARM architectures using modern C++. Develop concurrent software with STL, Boost, and asynchronous programming; write unit, end-to-end, and stress tests; conduct code reviews; and contribute to architecture and design decisions. The role also involves using AI-assisted development tools and collaborating with distributed international teams.

Build and maintain API integrations and the connectivity platform linking EV chargers, vehicles, and OEMs. Improve reliability, observability, and scalability; develop automations and internal tools for monitoring and triage; define SLAs and alerting; collaborate with product and engineering teams to balance stability and delivery.

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.

The Software Engineer will install and integrate Feedzai products, develop custom interfaces, and ensure product performance while collaborating with project teams and clients.

As a Software Engineer in Customer Success, you'll integrate, install, and customize software solutions for clients, ensuring performance management and meeting requirements. You'll collaborate with various teams to enhance Feedzai's core product and provide second tier client support.

Build and operate elastic.co features across the full stack: design React components, implement backend services, manage CI/CD and deployments, instrument performance and observability, triage security vulnerabilities, perform on-call incident response, and collaborate with product and design to ship production-quality code.

Design, build, and maintain resilient, scalable backend services for Network API, xSIM Management and Recording Platforms. Implement features, maintain code quality and tests, improve observability, participate in code reviews, and own end-to-end delivery.

Lead design and development of low-level Linux instrumentation and runtime security technologies (eBPF) to detect threats and protect cloud-native workloads. Build reusable monitoring for process, file, and network visibility, drive end-to-end feature delivery, establish testing methodologies for reliability and performance, partner cross-functionally, and provide technical leadership and mentoring.

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.

Design, build, and maintain backend API and database services for a cloud PBX platform. Drive architecture decisions for scalability, reliability, and observability; profile and optimize performance; debug production issues; collaborate on testing strategies; write unit-tested code and mentor peers.

Lead development of an IP phone configuration/provisioning server: analyze phone documentation, create integration specifications, implement and validate support for phone models, produce technical configuration guides, add analytics and usage metrics, profile and optimize performance, and maintain high-quality Java backend code while collaborating with Product, QA, and support teams.

Build and maintain hardened Ubuntu-based container images and the automated CI/CD pipelines to build, test, scan, sign, publish, and retire them. Integrate upstream open-source projects, ensure security and cloud-native compatibility, collaborate with cross-functional teams, document and share knowledge, mentor colleagues, and contribute to hiring. Work in a distributed agile environment with occasional travel.

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.

Develop and optimize algorithms for battery and renewable energy projects, analyze market data trends, and ensure algorithm performance.

Own and build production Android applications in Kotlin that integrate AI features (chat, vision, voice). Optimize performance, memory, and responsiveness for AI-heavy flows; implement analytics, logging and feedback; collaborate with backend and ML teams to design APIs and ensure app stability, security, and scalability in production.

As a Backend Software Engineer, you'll design scalable backend systems, optimize database performance, and collaborate with front-end and DevOps teams.

Contribute to Juju's development, collaborate with teams on distributed systems, debug issues, and enhance cloud automation features.

Develop modern event-driven microservices with AWS, collaborate in design sessions, and build high-performance applications using Java or Typescript.

Develop complex cloud applications for the Altium 365 platform. Responsibilities include building cloud-native applications and scalable infrastructure, designing APIs and data models, developing stateful and stateless services, working with relational databases and ORM frameworks, and contributing to AI-powered search and large-scale data processing. The role requires technical ownership, collaboration, solving complex challenges, influencing technical direction, and establishing engineering standards and governance.

Build scalable application networking features for Elastic Cloud, focusing on ingress, security controls, private connectivity, and DNS. Implement and refactor Go-based networking components, run load and performance testing, instrument monitoring, diagnose network incidents, and collaborate across teams to meet application networking needs while leveraging AI tools to improve productivity.

Software Engineers at QuantCo will design and develop scalable solutions, integrate models into client businesses, and improve products based on client feedback.

As an Ubuntu Core Software Engineer, you will design and implement features for the embedded Linux operating system, maintain boot mechanisms, debug system-level issues, and collaborate with a global team.