Top Software Engineer Jobs in Portugal

Build scalable, low-latency systems for machine-to-machine payments and agentic commerce. Responsibilities include developing payment protocols, usage metering, pricing, outcome verification, authentication, billing, settlement, digital wallet integrations, and revenue attribution. The role requires secure, reliable, high-throughput software across edge infrastructure and transaction engines, collaborating with engineering, research, product, and design teams to deliver emerging commerce capabilities.

Build and operate AI-powered developer tools, agentic workflows, backend services, APIs, and integrations with engineering platforms. The role involves applying software engineering practices to AI evaluation, testing, monitoring, and feedback loops; collaborating with developers; evolving platform architecture; and improving engineering processes and documentation.

Build scalable software for agent-web interactions, including edge services, data pipelines, protocol integrations, developer tools, content controls, and analytics. Develop support for MCP and related emerging standards, ensuring secure, reliable, high-performance systems. Collaborate with engineering, research, product, design, and other stakeholders to take concepts into production while evaluating AI-agent interactions with websites and applications.

Design and build LLM-based autonomous security agents and self-healing remediation pipelines. Integrate AI-driven threat detection into CI/CD and GitOps workflows, automate vulnerability research, patching, and security orchestration across cloud-native infrastructure.

Software Engineering Interns will build and ship projects affecting Cloudflare’s global Internet network during a 12–14 week, full-time internship. Responsibilities include collaborating cross-functionally, working with mentors, presenting projects, developing software at Internet scale, and participating in professional development and company networking activities.

Lead the design, development, and delivery of custom Odoo modules; run customer workshops; own solutions end to end; coach developers; design development processes; collaborate with product owners and consultants; align technology with business goals; and optimize system performance and reliability.

Develop and maintain React frontend functionality for a POS and business management platform. Build responsive interfaces for data management, reporting, and back-office operations, integrate components with REST APIs, and support micro-frontend architecture. Collaborate with an international engineering team, troubleshoot issues, use AI-assisted development tools, maintain technical documentation, and help ensure application quality.

Develop and maintain cloud-based enterprise applications across frontend and backend using Angular and Node.js. Build REST APIs, integrate application components, troubleshoot technical issues, write unit tests, and collaborate with engineering, QA, and cross-functional teams. Contribute to technical discussions, documentation, code quality, maintainability, and continuous improvement. The role involves full-stack development for enterprise POS and payment processing applications.

Build and maintain Ruby on Rails APIs for internal workflows, from stakeholder discovery and requirements refinement through design, testing, release, and evaluation. Write secure, maintainable code handling authentication, authorization, and sensitive data. Troubleshoot API issues, add regression coverage, participate in design discussions, review code, document decisions, and collaborate asynchronously in a distributed agile team.

Develop production Rust code for managing, reconfiguring, and adapting cloud resources within a Kubernetes development platform. Collaborate on architecture, infrastructure, and feature design; use AI to improve delivery; and work directly with users to gather requirements and debug complex distributed environments. The role requires strong systems thinking, cloud-native infrastructure knowledge, and effective async collaboration in a remote-first startup.

Build and maintain production-ready, scalable web applications as a Software Engineer II. Complete projects autonomously, collaborate on solutions, improve processes, anticipate roadblocks, and support team goals in a remote distributed environment. The role requires proficiency in Scala or Java, experience with Elasticsearch or Postgres, participation in on-call responsibilities, and legal authorization to work in the EU.

Leads architecture, development, optimization, testing, and delivery of modern C++ 3D software for clinical dental applications. Owns rendering, geometry, APIs, CI/CD, and cross-language integrations while applying AI-assisted development practices. Investigates complex defects, mentors engineers, leads technical discussions, collaborates across product and manufacturing teams, and ensures compliance with medical device software quality processes.

Build and scale Nuitee’s flight infrastructure from a production product into reliable API-first platform services. Responsibilities include API design, caching volatile flight offers, modeling booking data, supporting booking changes, cancellations and refunds, integrating NDC and legacy GDS flows, and improving performance and reliability. This hands-on individual contributor role requires deep backend and API expertise, flight-domain knowledge, Python experience, and ownership in a small team.

Design and lead resilient, low-latency systems for machine-to-machine payments, metering, and monetization across Cloudflare’s network. Define architectures and RFCs, establish technical standards, partner with customers and product teams, lead incident response and root-cause analysis, improve observability and reliability, review complex systems, mentor engineers, and guide product KPIs and roadmaps.

Build and maintain custom Odoo modules, translate customer requirements into technical solutions, migrate databases and modules across Odoo versions, write tests, conduct code reviews, troubleshoot live systems, improve performance and code quality, and support junior engineers. The role requires Python and Odoo expertise, XML knowledge, familiarity with the Odoo ORM and version upgrades, analytical skills, and effective English communication.

Build and maintain custom Odoo modules, translate customer requirements into technical solutions, migrate databases and modules across Odoo versions, write tests, conduct code reviews, troubleshoot live systems, improve performance and code quality, and support junior engineers. The role includes end-to-end ownership of modules from technical design through deployment and support.

Develop and maintain scalable full-stack applications, creating front-end interfaces, back-end services, and APIs. Collaborate with designers, project managers, clients, and cross-functional teams to gather requirements and deliver secure, high-quality solutions. Participate in code reviews, testing, debugging, and agile development while applying modern web technologies, database systems, and software engineering best practices.

Build and maintain ERP business management features across backend services, APIs, databases, and user interfaces. Develop reliable software, implement database models and schema changes, investigate issues, write tests, monitor releases, conduct code reviews, and communicate risks. The role requires professional software development experience and offers opportunities to grow into larger engineering responsibilities while working with technologies including Python, Django, React, PostgreSQL, AWS, and Kubernetes.

Develop and maintain finance services supporting transactional accounting, invoicing, and reporting. Design scalable solutions, investigate issues, improve system reliability, and ensure rigorous testing and code review. Collaborate with engineering, data, product, and security teams on technical roadmaps and project feasibility. Work with .NET, MongoDB, SQL Server, Kafka, Redis, and Docker while supporting continuous improvement across financial applications.

Develop and maintain C#/.NET backend components for a mission-critical Ground Control System used in unmanned aircraft operations. Responsibilities include real-time telemetry, mission planning, payload control, APIs, messaging, asynchronous pipelines, concurrency, observability, testing, CI/CD, and architectural improvements. The role also supports AI-assisted agentic development, automation, and internal engineering tools.

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.

Designs and builds Notabene’s Go-based transaction platform for secure, scalable, multi-tenant crypto transfers. The role focuses on distributed systems correctness, PostgreSQL performance, cloud infrastructure, observability, auditability, and regulated-data security. The engineer owns production operations, writes technical designs, reviews code, mentors teammates, collaborates with product and compliance teams, uses AI coding agents, and participates in on-call rotations.

Develop and maintain scalable backend and middleware services, design software architectures, optimize high-performance systems, monitor and debug production services, and build B2B integrations. The role includes writing clean, tested code, participating in code reviews, applying security and privacy principles, and collaborating within an agile, globally distributed engineering team.

Build full-stack developer-experience tools for Superhuman Docs. Responsibilities include creating internal platforms, improving CI/CD and deployment workflows, streamlining local development and testing, optimizing Bazel-based builds and Kubernetes infrastructure, documenting golden paths, and measuring developer productivity. The role partners closely with engineers, business-unit leaders, and the central platform team to translate developer friction into roadmap priorities and deliver reliable, high-velocity engineering workflows.

Design and build Java backend services and microservices using Domain-Driven Design, REST APIs, SQL, and relational databases. Collaborate across discovery, design, implementation, testing, release, and production support. Use and validate AI agents throughout the engineering lifecycle, investigate production issues, participate in code reviews, improve reliability, and help develop effective agentic workflows. The role requires product ownership, sound technical judgment, and occasional international travel.