Top Software Engineer Jobs in Lisbon

Build and maintain Python backend services, versioned APIs, data pipelines, and React/TypeScript internal applications. Design ClickHouse analytics models, implement authentication and authorization, and deploy services to Kubernetes across Azure and AWS using Helm, CI/CD, and GitOps. The role also involves automated testing, API contracts, platform tooling, multi-tenant SaaS security, and collaboration with product and engineering stakeholders.

Drive application security and regulatory compliance through vulnerability management, CI/CD and Azure-based practices, security scanning, compliance testing (DR, pen tests), and developer best-practice governance. Report on product compliance, lead technical change (GenAI, FinOps), and support remediation and patching efforts.

Design and develop automated tests (interface, load, integration, mobile) within an automation team. Automate critical business scenarios, build quality-focused test cases, and maintain frameworks and tools to ensure product reliability.

Design and build full-stack user interfaces for Elastic Fleet and Streams using TypeScript, React, and Node.js. Own complex projects end-to-end, lead architecture and system-design discussions, establish coding standards, conduct code reviews, and implement testing and deployment practices. Collaborate asynchronously with designers, product managers, and distributed engineering teams to deliver scalable, secure, user-focused experiences for observability and log-data workflows.

Develop and maintain Reachdesk’s full-stack SaaS platform, including backend systems, integrations, APIs, MCP services, and responsive web interfaces. Use Ruby on Rails, Python, SQL, React, and JavaScript while applying AI-assisted development, automated testing, CI/CD, monitoring, incident response, and performance practices. Collaborate with product, design, engineering, and business teams to deliver scalable, reliable, accessible features.

Design, implement, and maintain distributed software systems supporting Cloudflare’s application security products, including Rate Limiting and Web Application Firewall. Participate across the software development lifecycle, write automated tests, monitor production deployments, debug complex systems, review code, collaborate with security and infrastructure teams, and mentor colleagues. The role involves Rust and Go development, databases, Docker, Kubernetes, and maintaining reliable, fault-tolerant systems at scale, with possible on-call responsibilities.

Own backend and distributed-systems features for Dremio’s Open Catalog, from requirements and design through implementation, testing, rollout, and production support. Build catalog APIs, metadata services, authorization, multi-tenant isolation, and integrations with query engines. Solve concurrency, consistency, performance, and failure-recovery challenges while extending Apache Polaris and Iceberg standards. Diagnose production issues, review code and designs, mentor engineers, and contribute to open-source projects.

Lead technical architecture and development of highly available, distributed marketing platforms at global scale. Guide UI, full-stack, and data engineering teams; design Java and Spring Boot APIs; integrate data services with user interfaces; and drive cloud modernization using AWS and Databricks. Establish engineering practices for automation, testing, observability, reliability, performance, and CI/CD. Champion GenAI adoption, real-time data processing, and modern cloud-native development.

Develop and maintain secure, performant, resilient Java and Spring microservices for Mastercard’s global digital payment tokenization platform. Build event-driven, cloud-ready applications, support migration from on-premises infrastructure to public cloud, own software maintenance, and promote technology standards. Collaborate with product managers and engineers to improve customer journeys and reliability at global scale.

Design, develop, deploy, monitor, and maintain Java/Kotlin microservices powering MobileID and digital identity wallet solutions. Build REST APIs, run services on Kubernetes, contribute to delivery platforms and architecture decisions, and strengthen authentication, security, and key-handling capabilities. The role owns services end to end in production and involves collaboration across engineering teams.

Maintain and evolve FAdmin, a mission-critical Ruby on Rails flyer processing system, and related Content Platform tools. Deliver roadmap features end to end, support service desk requests, use AI coding agents to improve delivery and code quality, write automated tests, participate in code reviews, and maintain CI/CD pipelines. The role requires production software development experience, relational database and SQL expertise, and strong English communication.

Build and operate full-stack systems for an AI-powered offensive security platform. Responsibilities include developing React frontends, TypeScript APIs, Kotlin and Go backend services, deploying on AWS, designing scalable systems, optimizing databases, supporting production, and owning features from concept through deployment. The role involves close collaboration with AI and security researchers in a fast-paced remote startup.

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.

Develop and maintain Elasticsearch’s Inference API and plugin framework, integrating internal and external machine learning providers. Responsibilities include API and protocol design, streaming, asynchronous execution, rate limiting, billing integration, error handling, open-source contribution review, incident response, and comprehensive unit, REST, and rolling-upgrade testing. The role requires strong Java expertise, concurrency knowledge, API design skills, collaboration across distributed teams, and autonomous decision-making.

Develop and maintain scalable, stable, secure, and user-friendly software in an agile environment. Collaborate with engineers, support teams, and customer representatives across product development. Solve complex technical problems, write maintainable code, participate in testing and release cycles, and contribute across backend and frontend development while working independently in a remote setting.

Own the design, development, and delivery of complex ERP features, backend services, APIs, data models, and user-facing functionality. Ensure reliability, performance, data integrity, and maintainability across production systems. Collaborate with Product and engineering teams, lead incident resolution, conduct code reviews, improve testing and monitoring, and mentor intermediate developers. Contribute to architecture, technical planning, hiring, and safe deployment practices including feature flags, incremental rollouts, and data migrations.

Build, test, debug, and maintain query execution engine components in Java, including query operators, expression evaluation, scheduling, memory management, and resource management. Investigate correctness, reliability, and performance issues using logs, telemetry, benchmarks, and query profiles. Collaborate with senior engineers, write unit and integration tests, participate in code reviews, and develop expertise in vectorized processing, concurrency, parallelism, data exchange, and disk spilling.

Own the architecture and long-term direction of Alpaca’s Redpanda-based event streaming platform. Lead migration to event-driven systems, design scalable real-time client streaming, establish schema and library standards, shape authentication for streaming, partner on resilience and testing, mentor engineers, influence cross-team technical decisions, and participate in platform on-call. The role primarily uses Go and involves Kubernetes, Helm, PostgreSQL, observability, and distributed systems.

Develop and enhance backend-focused financial and investment products using TypeScript, Node.js, PostgreSQL, AWS services, and modern web technologies. Responsibilities include analyzing requirements, implementing scalable features, building financial institution integrations, writing automated tests, troubleshooting production issues, and improving software quality, availability, and security while collaborating with US-based teams.

Build and operate MCP servers and clients, A2A communication components, and multi-step agentic workflows for enterprise production use. Own system reliability, latency, cost, observability, evaluation, security, and production debugging across distributed, non-deterministic agent systems. Collaborate on architecture and code reviews while developing safeguards against tool abuse and prompt injection.

Build and operate MCP infrastructure, A2A communication layers, and agentic workflow runtimes. Responsibilities include designing orchestration systems, agent discovery, delegation, state management, observability, evaluation tooling, security controls, and production reliability solutions. The role requires solving complex multi-agent failures, making infrastructure build-versus-buy decisions, and collaborating closely with engineers through design and code reviews.

Maintain and evolve the Storybook codebase, designing APIs for developers, addon authors, and maintainers. Responsibilities include issue triage, pull request reviews, RFC development, educational content, community engagement, cross-team collaboration, and support rotation participation. The role requires strong web development experience, knowledge of frontend frameworks and build tools, excellent communication, and enthusiasm for improving developer experience and AI-assisted development workflows.

Build and operate production custody systems: signing service, key management, chain integrations, and transaction pipelines. Own end-to-end subsystems, integrate new chains, collaborate with cryptography on threshold signing and key recovery, write post-mortems, and produce clear async design docs and PRs.

Build backend systems powering enterprise AI capabilities for data modeling, schema generation, documentation, governance, and metadata workflows. Develop .NET microservices, REST APIs, MCP servers, LLM integrations, context management, output validation, request orchestration, usage metering, and compliance-aware workflows on AWS. Collaborate directly with product and architecture leadership in a remote-first team.

Build and scale backend systems for AI-native construction procurement software. Own data models, GraphQL APIs, distributed processing semantics, integrations with construction ERPs, authorization, approvals, and transactional business workflows. Develop in Go with Postgres and AWS, while contributing to AI-driven document extraction, optimization, observability, and complex integrations. Collaborate in a fast-moving startup environment with evolving product requirements and strong ownership expectations.