Top Software Engineer Jobs in Lisbon

You will solve complex problems related to cross-border logistics and B2B systems, focusing on high-load architecture and AI-driven tools.

Develop and architect features for Malwarebytes Browser Guard, serving millions of users. Write high-quality, tested code; design integrations; collaborate with Product, UX, and QA; review code; mentor engineers; and support delivery of the product roadmap. The role emphasizes React, JavaScript/TypeScript, Go, debugging, system architecture, AI workflows, user-centric design, and strong communication.

Design, build, and improve distributed clearing and securities-finance systems supporting brokerage products. Own projects from ideation through deployment, develop reliable APIs and integrations, refine existing infrastructure, and participate in on-call operations. The role requires strong systems fundamentals, attention to detail, financial-markets interest, and ownership of production systems handling customers’ money.

Build production-grade AI agent capabilities, including Agent2Agent communication, MCP integrations, and multi-step agentic workflows. Design, implement, evaluate, deploy, and monitor agent features while improving reliability, latency, and cost at scale. Collaborate with product and engineering teams to translate customer experience needs into agent architectures and contribute to internal frameworks and tooling.

As a Senior Backend Engineer at Mapped, you'll develop ETL pipelines, GraphQL and gRPC APIs, and scalable systems for a data platform.

Responsible for developing and maintaining backend services with a focus on REST APIs, collaborating with a team, and ensuring code quality.

Design, operate, and optimize a large-scale distributed architecture and microservices. Troubleshoot production issues and improve API gateways, ensuring system reliability and performance. Engage in CI/CD improvements and contribute to service decoupling.

Build and scale Base360.ai’s short-term rental platform, including customer-facing applications, APIs, automation engines, AI-powered workflows, third-party integrations, and cloud infrastructure. Develop systems for reservations, pricing, payments, guest communication, property operations, reporting, and financial workflows. Own projects end to end, make architectural decisions, ensure reliability, and deliver scalable products in a remote-first startup environment.

Staff Software Engineer responsible for architecting and developing scalable web applications and APIs using Elixir, React, and PostgreSQL. The role involves solving ambiguous technical and business problems, ensuring system reliability and performance, collaborating cross-functionally, presenting solutions to leadership, writing tested code, participating in code reviews, mentoring engineers, and removing technical roadblocks.

Build and own core systems powering Reach’s AI agents, including architecture, data pipelines, agent orchestration, and AI-powered product features. Work across React and TypeScript frontend, Python backend, cloud infrastructure, and relational or in-memory datastores. Ship features end-to-end, collaborate directly with users, move quickly in an early-stage environment, and help define the company’s technical direction.

Design, build, and scale high-throughput, low-latency Go services powering blockchain RPC infrastructure. Architect distributed systems, own production delivery, improve uptime and latency, resolve complex production issues, and collaborate across Product, Infrastructure, and Developer Experience teams.

Design, build, and operate high-throughput blockchain infrastructure using Go and Rust. Own distributed systems end to end, including architecture, performance optimization, security, testing, deployment, observability, incident response, and reliability. Lead technical designs and code reviews, mentor engineers, debug complex production issues, and collaborate across Product, Infrastructure, Security, and Developer Experience teams.

Lead the technical vision and development of Elasticsearch’s core search infrastructure, including indexing, query execution, retrieval, and relevance. Research search algorithms and data structures, guide long-term roadmaps, contribute hands-on code, mentor engineers, collaborate across teams, and improve large-scale distributed search systems.

Build and maintain scalable full-stack credit card and payment products using .NET, C#, React, and JavaScript. Own the software development lifecycle from coding through production monitoring and continuous improvement. Develop responsive interfaces, write unit and integration tests, troubleshoot issues, collaborate with product and QA teams, and translate technical solutions into business outcomes.

Build and maintain a production-grade iOS application using Swift and SwiftUI, integrating AI features through backend APIs. Design reliable AI interaction patterns, optimize performance, memory, battery, and latency, and support streaming, retries, and fallbacks. Collaborate with backend and ML engineers on API and system behavior, capture user feedback for AI evaluation, maintain App Store quality, and monitor and resolve production issues.

Design and operate customer-facing networking APIs, Python orchestration control planes, and automation that configures routers across global points of presence. Build resource allocation, job queues, retries, rollback, reconciliation, BGP, WireGuard, GRE, NAT, firewall, DNS, cloud interconnect, and Envoy xDS integrations. Own production monitoring, incident response, billing synchronization, API compatibility, and network configuration drift detection across application and infrastructure layers.

Lead the architecture and evolution of scalable ETL and data-processing systems for customer product catalogs. Design reliable distributed systems, improve throughput and latency, strengthen fault tolerance and observability, and guide technical direction across teams. Mentor senior engineers, conduct architecture reviews, lead cross-functional initiatives, influence hiring and onboarding, and help shape the engineering organization’s long-term technical vision.

Build and extend high-scale egress-path systems running on Linux kernel and network dataplanes. Work on kernel network stack (eBPF), routing (BGP), and distributed systems to optimize packet flow, reliability, and performance. Collaborate across teams and participate in on-call rotation.

Build and maintain fullstack identity verification systems using React/TypeScript and backend languages (Python/Kotlin/Ruby). Design scalable APIs and microservices on cloud platforms, improve reliability and security, mentor engineers, drive architecture and deliver privacy-compliant features end-to-end.

As a Software Engineer, you'll develop software for Ceph and distributed storage, collaborating with a global team to enhance cloud solutions.

Canonical is hiring a Software Engineer to develop features for Kubernetes, focusing on operators and integrations while collaborating in a distributed team.

Design and implement high-performance C++ applications for optical networking hardware. Contribute to system modernization, use STL/Boost and multithreading, write automated unit (GTest), integration and stress tests, and participate in design reviews and cross-functional collaboration.

Design, implement, and maintain telecom mediation and billing services with a focus on resiliency, scalability, security, and test coverage. Collaborate in an Agile team, identify improvements, document solutions, mentor juniors, and support full product lifecycle delivery.

Provide technical support for applications: investigate and resolve issues, develop and implement interfaces, create support documentation, collaborate with Design/Test/Dev teams, estimate resources, and monitor project performance.

Investigate and resolve verified application issues, develop and implement interfaces, create technical support documentation, collaborate with design, test and development teams, provide user support, estimate resource timings, and monitor project performance to meet goals.