Top Software Engineer Jobs in Lisbon

Develop and operate cloud platform services: build features in Go, own scoped projects from requirements to production, participate in code reviews and on-call rotation, automate repetitive work, investigate incidents, and collaborate asynchronously across distributed teams.

Owns technical direction and execution for major products and systems. Designs scalable, reliable architectures, writes production code, drives architecture decisions, solves complex engineering problems, improves testing, security, observability, and development practices, and mentors engineers across teams. The role requires leading major initiatives from design through production while collaborating across distributed international teams.

Develop and enhance MAAS core components, improve architecture, collaborate across teams, and ensure high standards in documentation and CI practices.

Lead development of vector similarity search capabilities in Elasticsearch, including designing new features, implementing algorithms and data structures, fixing bugs, and improving search relevance, speed, and maintainability. Collaborate asynchronously with a globally distributed engineering and open-source community, provide technical leadership, and guide initiatives from design through delivery. Write modern Java and serve as a subject-matter expert for vector search and Elasticsearch.

Lead development of Elasticsearch vector search capabilities, including new features, algorithms, data structures, performance improvements, and bug fixes. Collaborate with globally distributed engineers and open-source contributors, provide technical leadership, and guide initiatives from design through delivery. The role requires deep expertise in vector similarity search, modern Java, data storage technologies, concurrency, and scalable search platforms.

Lead Elasticsearch search relevance initiatives focused on vector search, designing and implementing scalable search features, algorithms, and data structures. Build and improve Elasticsearch and Lucene functionality, resolve complex bugs, optimize performance, and collaborate with distributed engineering and open-source communities. Write modern Java, guide projects autonomously from design through delivery, and contribute to technical direction across teams.

Lead Elasticsearch search relevance initiatives by designing and implementing search features, algorithms, and data structures; improving vector search speed and relevance; fixing complex bugs; contributing to Lucene; collaborating with globally distributed engineers and open-source contributors; and writing modern Java. The role requires autonomy, technical leadership, code review participation, and expertise with search or vector databases and storage technologies.

Design, build, and own scalable backend services, APIs, and high-performance web frontends for an autonomous procurement platform. Improve reliability, security, and performance, implement async task pipelines, and collaborate with product and design. Mentor juniors, participate in code reviews, and leverage AI-assisted tools while shipping iteratively in a globally distributed, async-first team.

Lead technical direction and hands-on execution for major products and systems. Design scalable, reliable architectures across backend, frontend, APIs, databases, and infrastructure; write code; make architecture trade-offs; solve production issues; improve testing, security, observability, and development practices; lead critical initiatives; and mentor engineers across teams.

Leads technical direction and hands-on execution for major software products and systems. Designs scalable backend, frontend, API, database, and cloud solutions; writes code; makes architecture trade-offs; resolves production issues; improves testing, security, reliability, and observability; and mentors engineers across teams. The role is fully remote, globally distributed, and requires strong English communication.

Design and evolve core cloud platform services, control-plane components, internal APIs, and platform abstractions. Build production-grade Go services and tooling, drive architectural initiatives such as gRPC migration and eventing foundations, and improve scalability, reliability, and developer productivity. Collaborate across engineering teams, support production systems and incident response, and drive long-term technical solutions for managed cloud and enterprise deployments.

Design and scale backend systems, APIs, and services for Nango’s open-source developer infrastructure platform. Build APIs, SDKs, UIs, and runtime systems, optimize performance and reliability, solve integration challenges with customers, shape the roadmap, and maintain the open-source repository. The role requires strong ownership, product thinking, developer empathy, communication, and autonomy in a remote-first startup environment.

Build end-to-end AI-first features for a benefits platform, working across frontend (React/TypeScript) and backend (Python/FastAPI/SQLAlchemy). Ship production code, integrate ML components (LLMs, recommenders, RL), maintain CI/CD and cloud deployments (GCP preferred), collaborate with product/design, write tests and documentation, and participate in peer review and iterative development.

Build and own release-defining projects for SingleStore’s multi-cloud managed database service. Develop scalable distributed systems across control and data planes, cloud infrastructure, networking, storage, Kubernetes, and customer-facing platforms. Lead initiatives from design through production, improve engineering standards, testing, observability, and CI/CD, solve reliability challenges, mentor engineers, communicate technical trade-offs, and collaborate cross-functionally to deliver high-quality products and customer outcomes.

Lead optimization of concurrent systems, scale backend microservices, and collaborate with developers and engineers on deployment for retail solutions.

Build and enhance GraphAware Hume, a graph-powered analytics platform. Responsibilities include developing APIs, designing secure and scalable access-control systems, orchestrating workflows for graph analytics and real-time insights, optimizing application performance, contributing to architecture and technical design, and collaborating with distributed engineering teams.

The Backend Engineer will develop and maintain features for Restream web services, design backend APIs, ensure infrastructure resilience, and contribute to a collaborative team environment.

Develop and optimize Soroban smart contracts and integrate anchor services on the Stellar network for cross-border payment solutions. Collaborate with cross-functional teams, test and debug smart contracts, document development processes, provide technical support, and stay current with blockchain and payments technology trends to ensure secure and efficient implementations.

Implement and optimize EVM-compatible features, reduce gas usage, develop and test smart contracts, collaborate on Ethereum infrastructure, and provide technical support.

Build and maintain high-security mobile wallet apps using React Native, Swift, or Kotlin. Implement biometric authentication and secure key storage, collaborate with cross-functional teams, debug performance issues, and propose UX and security improvements.

Build, deploy, and operate Cloudbeds' POS end-to-end: React Native/Expo frontend, Python/FastAPI backend, and Terraform/Kubernetes infrastructure. Implement offline-first sync, reliable APIs, observability, testing, and production support while collaborating across product, design, payments, and infrastructure teams.

Join a cross-functional team to design, build, test and maintain a next-generation peer review system using Kotlin and JavaScript. Champion engineering best practices (TDD, CI/CD), participate in code reviews and pair programming, mentor junior developers, own production applications, triage live issues, and contribute to architecture, deployments and continuous improvement within a hybrid Lisbon-based team.

The Senior Software Engineer will design and develop high-quality web and mobile applications, ensuring code quality while collaborating with product teams and mentoring junior engineers.

The role involves architecting AI solutions for compliance, ensuring regulatory adherence, automating processes, and enhancing team capabilities through technology and training.

Build and ship secure, production-ready CI/CD and AI-integrated features end-to-end. Design, implement, and iterate on products (e.g., hardened GitHub Actions, agent features), work closely with Product and front-end teams, make architectural decisions, and extend Chainguard's agentic AI capabilities into customer-facing experiences.