Top Software Engineer Jobs in Lisbon

The Senior Software Engineer will lead the development of a Python-based platform, enhancing a mature system for open-source collaboration, mentoring teams, and driving innovation.

Lead technical direction and implementation for Revenue Intelligence: design and deliver customer-facing web apps, backend APIs, event-driven services, data pipelines, analytical stores, and recommendation workflows. Improve reliability, security, observability, and scalability; modernize legacy systems; mentor engineers; drive architecture, operational readiness, and cross-team alignment.

Full‑stack engineer for self‑service cloud growth focusing on user and agent onboarding. Design and implement scalable frontend and backend features, APIs, data evolution strategies, and integrations with Kibana and Elastic Cloud. Collaborate with PMs, designers, and solution teams to ship production software and operationalize deployments.

As a Senior Blockchain Engineer, you will design and optimize smart contracts and blockchain infrastructure, collaborate with teams to ensure secure solutions, and lead development efforts in the DeFi ecosystem. You will analyze technologies, mentor staff, and enhance performance while maintaining security best practices.

The role involves designing, developing, and maintaining high-throughput systems for the billing platform, collaborating with teams, leading technical discussions, and mentoring other engineers.

Seeking a Senior Full-Stack Developer to design and implement scalable applications using React.js, Next.js, Node.js, and MySQL, while driving architectural discussions and ensuring code quality.

Design, implement, test, deploy, and maintain cloud-native full-stack features. Collaborate with cross-functional teams, follow software engineering best practices, participate in code reviews, troubleshoot issues, and leverage AWS and event-driven architecture to build scalable, maintainable applications.

Lead development and maintenance of an IP phone configuration/provisioning server. Analyze phone config docs, implement support for new phone models, troubleshoot VoIP/SIP/network issues, optimize performance, implement analytics, and produce technical configuration guides while collaborating with Product, Development, and QA.

Design and build highly scalable, low-latency market data systems and APIs. Implement backend services, influence architecture, maintain test coverage, participate in code reviews, troubleshoot incidents, and occasionally be on-call. Work spans streaming and historical market data endpoints and developer-focused API improvements.

Design, develop, and maintain scalable backend services and contribute to frontend features. Influence architecture and technical decisions, write well-tested code using TDD, troubleshoot production issues, mentor teammates, and collaborate with Product and cross-functional stakeholders to deliver reliable, high-performance SaaS solutions.

The Senior Software Engineer will design, develop, and maintain scalable software solutions, optimize performance, contribute to architectural decisions, and troubleshoot production issues.

Join Reedsy to develop and improve a collaborative word processor, adding features and ensuring performance and security for users.

The Staff Software Engineer will lead project delivery, understand client needs, define product requirements, and support engineering culture, with over 5 years of experience required.

Design and implement core Web3 protocol features and secure smart contracts in Solidity. Integrate blockchain solutions with cross-functional teams, ensure scalability and performance, stay current on EVM internals, conduct code reviews, and mentor junior engineers.

Design and implement a video processing engine, develop a cross-platform rendering engine, integrate systems, and optimize performance while collaborating with other engineers.

As the AI Agents Solutions Architect at Kraken, you'll design and build an AI-native finance operating system, automating finance operations and ensuring compliance in a regulated environment.

The Senior Software Engineer will focus on backend development, designing and maintaining APIs and services, collaborating on features, and enhancing integrations at Motion.

Design and implement real-time telemetry pipelines and fault-tolerant integration layers between IT and OT systems for datacenter power and grid-aware workload control. Own architecture and delivery of safe, reliable control systems from edge to control plane.

Build and maintain scalable, serverless microservices and APIs in Go; own services end-to-end from design to deployment and monitoring; use AI-powered developer tools daily; mentor engineers and improve engineering practices to support global fulfilment operations.

Lead architecture and backend development for the vCluster platform by designing and implementing Kubernetes-native solutions in Go, owning features end-to-end, contributing to open-source, and solving deep systems challenges around multi-tenancy, isolation, and GPU infrastructure.

Lead rapid prototyping, architectural research, and complex technical projects for a Kubernetes virtualization platform. Partner with the CTO to shape product direction, integrate new technologies, and occasionally engage customers to translate needs into engineering solutions. Provide technical leadership beyond coding and mentor the team.

Architect and build core backend components of the vCluster platform by working deeply with Kubernetes internals. Write high-performance Go code, take end-to-end ownership from design to release, contribute to open-source projects, and solve complex systems and multi-tenancy problems for GPU and Kubernetes-based infrastructure.

Develop core backend components for a blockchain network, focusing on reliability and scalability, mainly using Rust. Ensure code quality through testing and debugging.

The Senior Full-stack Engineer will design and build features in TypeScript, driving projects with a product mindset and collaborating in a dynamic startup environment.

The Staff Software Engineer will lead technical direction, improving system design and mentoring others while writing code and collaborating across teams for a cloud-based generative coding platform.