Top Software Engineer Jobs in Lisbon

Build and maintain Ergodic AI’s AI platform across back-end and front-end systems. The role involves developing with Python web frameworks and JavaScript/TypeScript, integrating with client technology stacks and workflows, applying AI, ML, and LLM concepts, and contributing to DevOps, cloud deployment, testing, and infrastructure practices. As an early-stage hire, the engineer will help shape the product and solve complex data and AI challenges.

Build, extend, and operate systems that provision, monitor, and orchestrate private network interconnects at scale. Design, implement, test, and deploy software; collaborate with Product, Network, and Infrastructure teams; participate in on-call rotations and maintain production health. Work with systems-level languages and network technologies (BGP, routing, overlays) across distributed services.

Lead adoption of Sovos’s Core and AI Platform capabilities across engineering teams. Embed with teams to understand codebases, remove adoption blockers, contribute code using AI-assisted development, and create reusable guidance and automation. Establish standards for AI coding assistants, prompt engineering, code quality, and workflow integration. Collaborate on testing and deployments while addressing security and architectural considerations. Mentor engineers, document best practices, and communicate effectively with technical and non-technical stakeholders.

Design and implement large-scale browser-based rendering infrastructure to execute and extract structured content from JS-heavy web apps. Improve rendering quality, performance, cost, and throughput at internet scale and productionize rendering research.

Develop complex backend features for a cloud-native enterprise MDM platform. Responsibilities include designing scalable distributed systems, presenting solutions to architects, leading feature delivery, mentoring engineers, collaborating with QA and cross-functional teams, writing unit and integration tests, documenting features, making technical decisions, and supporting owned platform areas. The role requires strong Java, algorithms, data structures, software design, performance optimization, profiling, and Java runtime expertise.

Design, develop, and maintain scalable Go microservices, APIs, and data models supporting Cloudflare’s global IP addressing infrastructure. Build distributed, fault-tolerant systems for IP assignment, traffic engineering, BGP management, and provisioning. Collaborate with reliability, network, and product engineers while debugging complex systems and learning edge networking, routers, DNS, and Linux environments.

Build, deploy, and operate highly scalable Network Services systems on Cloudflare’s global edge network. Develop distributed networking systems involving BGP, Linux kernel dataplanes, control planes, APIs, traffic analytics, and data pipelines. Improve system performance, reliability, and scalability while solving complex customer problems. Own solutions end to end across design, development, deployment, and operations, and collaborate across engineering and product teams.

Build and own React Native features for Kraken’s consumer mobile app, from product discovery through launch, measurement, and iteration. Partner with Product and Design to create responsive, trustworthy financial experiences using dynamic or real-time data. Guide development for a new Asian-market app, including regional UX, connectivity restrictions, vendors, and telemetry. Contribute to architecture, performance, reliability, code reviews, and product engineering standards.

Lead the roadmap and technical vision for CI/CD and release infrastructure. Identify and resolve bottlenecks and security risks, design scalable release gates, direct engineers through complex cross-organizational projects, manage high-severity incidents, and establish engineering standards. Remain hands-on through code reviews, prototyping, debugging, mentorship, and technical communication while primarily delivering impact through team leadership.

Build and ship backend features for enterprise Coder deployments, including database migrations, observability, reporting, auditing, security, scalability, and reliability improvements. Investigate production issues, resolve operator problems, document designs, participate in code reviews and RFC discussions, and join on-call rotations. The role requires professional Go development, concurrency knowledge, SQL expertise, debugging ability, and strong communication.

Design, build, and operate billing microservices for metering, subscriptions, invoicing, payments, and financial workflows. Lead projects end-to-end, ensure financial correctness and reliability, improve observability, investigate incidents, and collaborate with Product, Finance, and other teams to deliver scalable billing infrastructure.

Own and deliver substantial connectivity features across drivers, protocols, client libraries, connectors, and distributed services. Design scalable systems, diagnose complex client/server and production failures, maintain compatibility and reliability, and build comprehensive testing and observability. Collaborate across Product, QA, Support, SRE, and partner teams; mentor engineers; influence technical direction; and contribute to open-source projects. The role requires deep systems programming expertise and experience with APIs, networking, concurrency, asynchronous programming, and production software delivery.

Build and operate backend pricing systems for real energy contracts. Responsibilities include designing the Pricing API, consolidating pricing logic, improving quote speed, implementing error handling and observability, creating alerting, explaining pricing failures, and supporting live incidents. The role requires production Python backend experience, FastAPI, SQL, data-heavy systems, end-to-end project ownership, and AI-assisted development workflows.

Develop and enhance MetaMask social and multi-chain experiences across Portfolio, browser extension, and mobile platforms. Collaborate across teams on complex projects, mentor engineers, and build scalable full-stack applications using React, React Native, modern JavaScript, blockchain technologies, APIs, testing, and continuous integration. Ensure cross-platform compatibility and apply web security best practices.

Designs and develops backend services for Elastic’s Streams data pipeline, Logstash, and OpenTelemetry Collector using Java, JRuby, and Golang. Solves distributed-systems problems at scale, improves existing code, maintains automated test coverage, reviews pull requests, collaborates across teams, supports customers, and participates in on-call rotation. The role also involves open-source contributions and operating reliable streaming infrastructure in a globally distributed, remote-first environment.

Build and evolve Rerun’s open-source viewer, cross-language SDKs, and integrations with Rerun Hub. Develop high-performance interfaces for large-scale multimodal data, optimize workflows across desktop and web, make full-stack architecture decisions, and collaborate with backend, Hub, design, customers, and the open-source community. The role involves UI development, rendering, data handling, infrastructure, real-time applications, visualization, and performance optimization.

Develop and optimize software solutions for industrial additive manufacturing in an agile team. Responsibilities include designing algorithms, data structures, and software subsystems; debugging complex issues; benchmarking and improving performance, stability, efficiency, and scalability; and contributing to software quality and documentation. The role uses Vue.js, TypeScript, Python, C++, MongoDB, Docker, and automated development tools.

Design and develop scalable backend services and APIs for creating, configuring, testing, deploying, monitoring, and managing AI agents. Build orchestration, workflow execution, integrations, runtime, permissions, observability, and lifecycle capabilities. Collaborate with frontend, AI/ML, product, UX, DevOps, and platform teams to deliver secure, reliable, high-performance AI products and resolve complex production issues.

Lead software development initiatives within Natixis’s BPCE-SI department, collaborating with business users and IT teams. Analyze requirements, design and implement technical solutions, develop system architecture modules involving migration and security, and maintain code and data quality. The role requires strong programming skills, analytical and communication abilities, cross-functional collaboration, Agile knowledge, fluency in French, and B2-level English.

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.

Lead a hands-on frontend engineering team building partner acquisition and onboarding products. Architect scalable frontend and backend systems, oversee React and TypeScript development, integrate Kotlin, AWS, and Salesforce workflows, and establish experimentation infrastructure with Growthbook. Drive A/B testing, AI-assisted engineering practices, modern SDLC standards, code reviews, system design, and team performance across six engineers.

Supports functional, performance, and regression testing of WES/WAF software; documents defects and assists Development with resolution. Helps integrate and configure interfaces with customer systems, supports onsite software commissioning, maintains documentation and training materials, and provides second-level incident troubleshooting. Participates in a 24/7 support rotation and collaborates with international engineering and project teams while developing toward a senior integration and support specialist role.

Leads software testing, integration, troubleshooting, and technical support for WES/WAF warehouse execution systems. Develops test plans, integrates software with ERP, WMS, and PLC systems, commissions customer solutions, manages escalated 24/7 incidents, and drives root-cause resolution. The role also mentors junior engineers, leads complex integration projects, schedules support resources, maintains documentation, and improves testing and support processes. Travel of approximately 10% across EMEA and participation in an on-call rotation are required.

Designs and implements scalable platform integrations using React, Angular, Java, Spring Boot, and microservices. Responsibilities include architecture, data modeling, testing, monitoring, alerting, performance optimization, security, CI/CD, production support, cross-functional collaboration, and mentoring junior engineers. The role requires building high-traffic distributed systems, working across time zones, and applying AI-assisted development practices.

Lead the design and development of complex backend and cloud-native systems. Own ambiguous technical challenges, shape architecture and engineering standards, investigate production issues across services and environments, and drive operational improvements. Influence product strategy and long-term technical direction while mentoring engineers, managing stakeholders, leading technical interviews, and fostering engineering excellence across the organization.