Backend-Focused Software Engineer II at Tripadvisor | Lisbon

The Tripadvisor Group is dedicated to connecting people with experiences that are truly worth sharing. Our mission is to be the most trusted source for travel and experiences globally. By leveraging our esteemed brands, cutting-edge technology, and extensive capabilities, we connect a worldwide audience with partners through engaging content, expert travel advice, and two-sided marketplaces offering experiences, accommodations, restaurants, and more. The Tripadvisor Experiences Engineering team operates across Europe, overseeing Tripadvisor.com, the Tripadvisor mobile applications, and their supporting infrastructure. We manage the systems that empower operators to expand their businesses and enable third parties to access our extensive inventory. Additionally, we provide essential tools that equip our customer service teams to deliver world-class support to travelers and operators around the globe. We are on the lookout for a Software Engineer II to join our rapidly expanding team. This position is available for candidates residing within a commutable distance (typically up to 2 hours) from one of our office hubs in Lisbon, Saldanha. We embrace flexibility in work arrangements while also valuing the importance of in-person interactions for collaboration and connection. Expect a remote-first working model with occasional in-person gatherings at your closest office for team bonding, strategic planning, or other significant moments. At Tripadvisor, our engineers are adaptable and relish tackling diverse technical challenges. This is primarily a backend-focused full-stack role, where you'll predominantly work on backend tasks, with occasional frontend projects. While a strong desire to learn is essential, prior expertise in frontend development is not a prerequisite; we provide on-the-job training. Within our dynamic environment, our engineers collaborate closely with product managers and designers, engaging in the entire software development lifecycle—from design and coding to testing and deployment. Most of our engineers release code to production every few days, following a daily release cycle. Our tech stack includes Java, React, TypeScript, GraphQL, Kubernetes, SQL, and NoSQL databases, all hosted on AWS. While familiarity with every technology is not mandatory, a strong willingness to learn is crucial. You should have experience with a statically typed, object-oriented programming language such as Java, C#, or C++. Perks of Working at Tripadvisor Competitive compensation packages, including base salary and annual bonuses.

Tripadvisor’s Experiences Engineering team is looking for a Principal Software Engineer - Mobile to join the group in Lisbon. This position centers on leading mobile development for customer-facing solutions. The team operates remote-first, but candidates must be able to commute to the Lisbon office within roughly 1.5 hours for occasional meetings. Note: B2B contracts are not offered for this role. Role overview This is a senior technical leadership role focused on mobile app architecture and delivery. The Principal Software Engineer will guide the design and development of scalable mobile systems, ensuring strong performance, reliability, and offline functionality. Collaboration with other engineering teams is key to maintaining quality and consistency across platforms. What you will do Lead the design and architecture of complex mobile applications that power Tripadvisor’s customer-facing products. Run design reviews within the team and across the broader engineering organization, with an emphasis on mobile architecture and platform integration. Champion best practices in release management, app stability, observability, performance monitoring, and incident response to improve mobile operational maturity. Work closely with engineers to deliver reliable, high-quality mobile experiences for travelers and operators worldwide. Team context The Experiences Engineering team manages the platform, mobile apps, and supporting infrastructure across Europe. Their work helps operators grow their businesses, supports third-party integrations, and equips customer service teams to assist travelers globally.

Join the Tripadvisor Group, where we connect people with unforgettable experiences and strive to be the world's most trusted source for travel and adventure. Utilizing our vast portfolio of travel brands and advanced technology, we aim to engage a global audience and facilitate meaningful connections with our partners across diverse travel categories including accommodations, restaurants, and unique experiences. The Tripadvisor Experiences Engineering team, distributed across Europe, plays a pivotal role in managing Tripadvisor.com and our mobile applications, alongside the supporting infrastructure. We empower operators to grow their businesses while enabling third parties to leverage our comprehensive inventory. Our dedicated team provides essential tools that support our customer service representatives in delivering exceptional service to travelers and operators worldwide. We are in search of a Senior Software Engineer to become part of our dynamic team. This position is available to candidates who can commute (generally within a 2-hour radius) to one of our office hubs in Lisbon. We appreciate flexibility in work arrangements and value the importance of in-person interactions for collaboration and connection. Expect a remote-first work model complemented by periodic office gatherings for team planning and engagement. At Tripadvisor, our engineers thrive on tackling a diverse array of technical challenges. This backend-focused full-stack role primarily involves backend development, with opportunities to engage in frontend projects as well. While a willingness to learn is essential, expertise in frontend development is not required at the outset, as we offer on-the-job training. Our collaborative environment is designed for productivity, where engineers work closely with product managers and designers throughout the entire software development lifecycle—from design and coding to testing and deployment. Most engineers deploy code to production every few days within our daily release cycle. The technology stack at Tripadvisor includes Java, React, Typescript, GraphQL, Kubernetes, SQL, and NoSQL databases on AWS. While strong proficiency in Java is mandatory, familiarity with the entire stack is not a prerequisite; a passion for learning is what we value most. Why Work with Us? Competitive compensation packages, including base salary, annual bonuses, and more. “Work your way” approach offering flexibility to cater to your lifestyle and needs.

Tripadvisor Experiences (Viator) is looking for a Mid-Level DevSecOps Engineer to help secure its AWS-based platform. This role centers on proactive security engineering and hands-on incident response for a large-scale travel experiences marketplace. Role overview The DevSecOps Engineer II will monitor the AWS cloud environment for security threats, respond to incidents, and automate security processes. Collaboration with engineering teams is a key part of the job, working together to strengthen platform security and ensure safe travel experiences for users worldwide. Key responsibilities Monitor AWS infrastructure for security threats and vulnerabilities Respond to security incidents and support investigations Automate security processes to improve detection and response Work closely with engineering teams to embed security best practices Location This is a hybrid position based in Portugal. Occasional travel to the Lisbon office may be required.

About the Role tgs is looking for a Backend Engineer (Python or Go) to join the Unbabel division in Lisbon. This team builds and maintains backend services that support enterprise-grade translation solutions across platforms. The work centers on making language technology smarter and more seamless for clients worldwide. What You Will Do Design and implement core backend services and reliable system architectures. Build, maintain, and improve codebases with an emphasis on testability and efficiency. Develop, optimize, and support key services and infrastructure in live production environments. Enhance system architecture to improve scalability, resilience, and performance. Analyze complex technical problems and help prioritize initiatives alongside product and engineering teams. Encourage continuous improvement, automation, code quality, and strong architectural practices. Work with teams across disciplines to deliver solutions that adapt to changing business and technical needs. Troubleshoot and prototype quickly to address platform and service challenges as they arise. Location Lisbon, Lisboa, Portugal

About the Role TransPerfect’s Unbabel team in Lisbon is looking for a Backend Engineer with experience in Python or Go. This role focuses on building and improving backend services that power cross-platform translation solutions for enterprise clients. The team values reliability, scalability, and seamless performance as it develops intelligent language products. Main Responsibilities Design and implement reliable backend architectures and core services. Create, maintain, and optimize codebases with attention to testing and efficiency. Develop, support, and enhance critical services in production environments. Advance the architecture to support scalability, resilience, and high performance. Analyze complex technical problems and help prioritize initiatives with product and engineering teams. Promote continuous improvement, automation, code quality, and adherence to architectural best practices. Work with cross-functional teams to deliver solutions that meet changing business and technical needs. Troubleshoot and prototype to address platform and service challenges quickly. Location This position is based in Lisbon, Lisboa, Portugal.

Role overview Riskified seeks a Senior Backend Engineer in Lisbon to help build and maintain the backend systems that power its fraud prevention platform. The position centers on improving efficiency and reliability for clients around the globe. This work supports the technical foundation that enables Riskified’s services to scale and perform. What you will do Design, develop, and maintain backend systems for the core platform Collaborate with cross-functional teams to deliver technical solutions Tackle complex backend challenges to support platform growth and stability Contribute to the adoption and implementation of new technologies Impact Senior Backend Engineers at Riskified influence both product direction and client outcomes. The work directly supports Riskified’s ongoing efforts to lead in fraud prevention and deliver reliable results to customers.

Role overview Riskified seeks a Backend Engineer in Lisbon to help build and maintain the systems behind its fraud prevention products. This position centers on developing backend applications that keep client transactions running smoothly. The work involves ensuring reliability and scalability across key services. What you will do Design, develop, and maintain backend applications that support fraud prevention efforts Work with colleagues from other teams to deliver solutions that perform well under load Help ensure the stability and scalability of systems that process client transactions

About Air AppsAt Air Apps, we embrace a vision of expansive thinking and agile execution. Founded by a family in 2018, our mission is to revolutionize planning with the world's first AI-powered Personal & Entrepreneurial Resource Planner (PRP). With our roots in Lisbon, Portugal, and additional offices in San Francisco, we have successfully maintained self-funding while achieving over 100 million downloads globally.Our commitment to long-term innovation drives us to continually challenge conventional wisdom, expanding the frontiers of AI-driven solutions that genuinely transform lives. Here, you will play a pivotal role in crafting products that empower individuals worldwide.Join us on our mission to redefine resource management and make a lasting impact.The RoleAs a Backend Software Engineer, you will take charge of designing, developing, and maintaining the server-side components of our applications. You will work collaboratively with product managers, frontend developers, and other cross-functional teams to deliver robust and scalable backend services that enable essential features and foster rapid growth.Please be aware that this posting is intended to expand our talent pool while we prepare to officially launch the job. We will reach out to you as soon as it becomes available.ResponsibilitiesAPI & Service Architecture - Design and implement RESTful or GraphQL APIs, microservices, and business logic utilizing Node.js and TypeScript.Database Design & Integration - Model and manage data queries using Supabase and PostgreSQL, including functions, row-level security, and real-time features.Cloud Infrastructure - Deploy and oversee services on Google Cloud Platform (GCP), particularly with Cloud Run, Cloud Functions, IAM, and Pub/Sub.Code Quality & Testing - Create clean, testable code utilizing unit, integration, and end-to-end testing frameworks (e.g., Jest). Participate in code reviews and uphold quality assurance practices.Security & Reliability - Develop secure-by-default solutions for authentication, authorization, and data protection, adhering to Clean Code and Clean Architecture principles.Monitoring & Operations - Establish logging, monitoring, and operational practices to ensure system reliability.

Join Dashlane as a Backend Software Engineer and be part of a dynamic team dedicated to enhancing digital security for our users worldwide. In this role, you will design, develop, and maintain scalable backend systems that support our innovative applications. Your contributions will directly impact the user experience and the overall success of our products.

About the Role Renesas Electronics Corporation is hiring a Senior Backend Software Engineer in Lisbon. This role focuses on designing, building, and maintaining backend systems that support Renesas products. What You'll Do Develop and maintain backend software components Work with cross-functional teams to deliver reliable solutions Contribute to the architecture and performance of core systems Location This position is based in Lisbon.

Join Dashlane as a Junior Backend Software Engineer and embark on a journey to enhance user security and experience. In this role, you will collaborate with seasoned engineers to design and develop backend solutions that power our innovative password management platform.As a key member of our engineering team, you will engage in coding, debugging, and testing applications while contributing to architecture discussions. This is an excellent opportunity for those eager to learn and grow in a supportive environment.

About TripadvisorThe Tripadvisor Group connects individuals to unforgettable experiences, aiming to be the most trusted source for travel and adventures globally. Leveraging our extensive brands and technology, we engage our worldwide audience with partners through rich content, insightful travel guidance, and two-sided marketplaces for experiences, accommodations, restaurants, and various travel categories. Tripadvisor, Inc. (Nasdaq: TRIP) encompasses a diverse portfolio of travel brands, including Tripadvisor, Viator, and TheFork.We are seeking a proactive Cloud Security Engineer II (AWS) to serve as the primary defense for the Tripadvisor Experiences platform. This vital mid-level role integrates proactive security engineering with reactive incident response. You will immerse yourself in our cloud environment, continuously monitoring for threats, addressing security incidents, automating defenses, and collaborating with our engineering teams to enhance platform resilience.Job Location: This is a remote or hybrid position based in Portugal. Occasional travel to company offices may be required.

Join Dashlane as a Backend Software Engineer Intern and take the first step in your career by contributing to our innovative projects. In this role, you will collaborate with our talented engineering team to develop robust backend solutions that enhance user experience and ensure data security.

Join our dynamic tech team at Sixt SE as a Backend Java Software Engineer! In this exciting role, you will be responsible for designing, developing, and maintaining robust backend systems that drive our innovative applications. Collaborate with cross-functional teams to deliver high-quality software solutions that enhance our customer experience.

Join our dynamic team at inetum2 as a Java Backend Engineer. We are looking for a talented individual who is passionate about backend development and eager to contribute to innovative technology solutions. In this role, you will collaborate with cross-functional teams to design and implement high-quality software solutions that meet our clients' needs.

Internship Overview evolution is looking for a Backend Engineering Intern to join the team in Lisbon. This position offers hands-on experience with real projects and the chance to work closely with seasoned engineers. What to Expect Collaborate with the engineering team on active backend projects Gain practical skills and learn from experienced colleagues Contribute ideas and support ongoing development work This internship is designed for those eager to grow technical abilities in a supportive, team-driven setting.

Join our dynamic team at inetum2 as a Software Test Engineer. In this role, you will play a crucial part in ensuring the quality and performance of our software products. You will collaborate with cross-functional teams to identify and resolve software issues, implement testing protocols, and contribute to the overall improvement of our development processes.

SingleStore is seeking a Software Engineer (Graduate) to join its Lisbon office. This position centers on building real-time technology that helps businesses work more efficiently. The engineering team emphasizes teamwork, creativity, and hands-on ownership of projects from the initial idea through deployment. New graduates will collaborate closely with experienced engineers, receiving mentorship and opportunities for professional growth. Cross-functional work with product management, marketing, and sales is a regular part of the role. What you will do Design and improve product features using advanced technologies, including WASM Strengthen cluster fault tolerance for SingleStore deployments Boost SQL query performance with methods such as SIMD and LLVM code generation Create and refine search and costing modules for the query optimizer Contribute to both new and ongoing projects that ship with each release Write and test production software, gaining insight into the product and business operations Requirements Bachelor’s degree in Computer Science, Electrical Engineering, Computer Engineering, or a related discipline Strong grasp of computer science fundamentals, including operating systems, concurrency, multithreading, and server architectures Proficiency in C++ or C Solid understanding of algorithms and data structures Interest in building reliable, robust software Work environment Engineers at SingleStore work in small, collaborative teams and see their contributions go live with every release. The company values celebrating achievements together, both in the office and throughout Lisbon.

Emma Sleep is hiring a Senior Backend Engineer with expertise in Golang to help shape the technology behind its global platform. This position is based in Lisbon and centers on developing and refining backend systems that keep Emma Sleep’s operations running smoothly. Key responsibilities Design, build, and maintain backend services using Golang Improve system performance and scalability Support the reliability and efficiency of Emma Sleep’s technology platform Location This role is located in Lisbon.