Senior Software Engineer - Windows/Desktop Applications

About Speechify Speechify builds tools that remove reading barriers and help people learn in new ways. More than 50 million users depend on our text-to-speech products to turn everything from PDFs and books to Google Docs, news articles, and websites into audio. Our platform includes apps for iOS, Android, Mac, Chrome, and the web. We have received recogniti…

Atto Trading is an innovative quantitative trading firm leading the way in global high-frequency trading strategies. We are looking for a talented C++ Software Engineer to become a key member of our expanding team in Lisbon, Portugal. This position requires on-site presence.Our diverse international team consists of experts in trading, statistics, engineering, and technology, allowing us to create a collaborative environment where we transform ideas into profits swiftly. We pride ourselves on our integrity, creativity, and dedication while tackling some of the most challenging problems in the industry.Key Responsibilities:Architect and implement high-performance components for our trading infrastructure.Develop cutting-edge high-frequency trading (HFT) systems in C++ focusing on low latency and high reliability.Write modern, efficient code, utilizing the latest C++ standards.Interact directly with advanced networking hardware through kernel-bypassing drivers.Conduct performance research to enhance our platform's speed and scalability.

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.

SingleStore offers a 12-week Software Engineer Internship on the Platform team in Lisbon, Portugal for Summer 2026. This internship places interns alongside experienced engineers, contributing to projects that support real-time technologies used by businesses around the world. The team values quick release cycles, collaboration, and creative problem-solving. Interns see their work make a visible impact, with chances to join team outings and explore Lisbon together. What you will do Take responsibility for assigned projects from start to finish, with guidance from mentors. Participate in the entire product lifecycle, working closely with engineering, product, marketing, and sales teams. Contribute to SingleStore’s internal testing platform, which helps ensure the reliability and scalability of the database engine. Develop new features, write tests, and help improve the platform’s user experience. Platform team focus The Platform team builds and maintains systems that increase productivity for SingleStore’s engineering organization of over 180 people. Interns play a role in strengthening the internal testing platform, directly supporting the quality of SingleStore’s core technology. Mentorship and growth Interns receive support from engineers committed to their professional development, gaining exposure to both technical and business aspects of software engineering. Collaboration with cross-functional teams is an essential part of the internship experience.

Join our dynamic team at inetum2 as a Unix System Administrator. In this role, you will be responsible for managing, maintaining, and optimizing our Unix-based systems. Your expertise will help ensure the reliability and efficiency of our IT infrastructure.We are looking for a proactive individual who can tackle challenges head-on and contribute to our growing technological landscape. If you are passionate about systems administration and thrive in a fast-paced environment, we want to hear from you!

About Relay Commerce Relay Commerce is a leading e-commerce enablement platform providing innovative scaling solutions tailored for personalized messaging, social commerce, and customer retention strategies. We empower merchants to thrive in an ever-changing digital marketplace with our cutting-edge suite of tools. Currently, our solutions facilitate over $1 billion in incremental gross merchandise volume for more than 35,000 merchants worldwide. Our ecosystem features eight advanced software products designed to enhance merchant revenue growth through email marketing automation, conversion optimization, user-generated content management, retention analytics, and subscription management. Relay's products are recognized as essential revenue-generating tools for forward-thinking e-commerce merchants across the globe. Role Overview In this pivotal role as a Full-stack Software Engineer, you will primarily focus on back-end development (approximately 70% of your time) by creating robust TypeScript services that drive subscription management, billing workflows, and merchant-facing APIs for Shopify stores handling millions of transactions. You will work collaboratively within a team, independently delivering features while collaborating with a seasoned team lead to propose solutions, implement them, and oversee their operation in production. It is crucial that these systems maintain high reliability, observability, maintainability, and performance. Utilization of AI tools such as Claude code and Codex will enable you to accelerate feature delivery effectively. Additionally, you will contribute to our React-based front-ends (approximately 30%) in a dynamic, multi-functional team environment. About Smartrr Smartrr, a subsidiary of Relay Commerce, is a frontrunner in subscription solutions tailored for e-commerce brands. Our platform empowers numerous Shopify merchants to effortlessly launch, manage, and scale their subscription and loyalty programs. Smartrr has facilitated over $300 million in transaction volume, significantly strengthening customer relationships and brand profitability.

We are seeking enthusiastic and skilled Junior Software Engineers to join our team in crafting innovative SaaS-based solutions aimed at combating money laundering and financial crime. Our mission is to unveil the truth and create a safer world by ensuring that illicit funds do not reach the hands of wrongdoers.As a Junior Software Engineer, you will:Collaborate with a talented team of software engineers.Develop new features that empower our platform to analyze data about individuals, apply machine learning models to classify behaviors, and integrate this with our existing datasets. Your contributions will assist our clients in identifying negative actions, understanding what occurred, and pinpointing when these actions took place.Play a key role in delivering new functionalities and maintaining our platform while we innovate with new technologies and scale our operations.Quickly learn and adapt to the technologies we employ for coding and deploying to Kubernetes.Engage in sprint planning and demonstrate the features you’ve developed to stakeholders.Take ownership of your code quality, ensuring rigorous testing and maintaining system integrity.Follow and propose enhancements to best practices for transitioning code from initial requirements to deployed services in production.Our Tech Stack:We utilize a technology stack optimized for public cloud architectures, particularly AWS and GCP.Kotlin is our primary language for backend services development.Our database technologies include significant use of relational databases like Postgres and a distributed SQL database, Yugabyte.We employ an event-sourced model with Kafka for our communication bus and gRPC for intra-service communication.Modern observability solutions are built on Grafana Cloud, and we utilize ArgoCD for code deployment.We prioritize engineering excellence, striving to deliver the highest quality code and solutions to our customers.

Join our dynamic team at inetum2 as a System Administrator specializing in Unix systems. In this pivotal role, you will ensure the stability, integrity, and efficient operation of our Unix-based systems. Your expertise will be crucial in optimizing performance and implementing security measures while providing technical support to our users.

Role Overview Lucidya is hiring a Software Engineer to join its remote team in Lisbon, Portugal. This role focuses on designing, building, and maintaining software that supports the company’s core business. What You Will Do Design and implement software solutions for new and existing products Maintain and improve code quality across projects Work closely with other engineers to solve technical challenges Contribute ideas and expertise to help shape project success Who We’re Looking For Engineers who enjoy collaborating with others People ready to tackle complex technical problems Individuals committed to delivering strong results Those interested in growing their skills while contributing to team goals This is a remote position based in Lisbon, Portugal.

Join our dynamic team at inetum2 as a Linux System Administrator! In this role, you will be responsible for managing and supporting our Linux-based systems, ensuring optimal performance and security. You will collaborate with cross-functional teams to design and implement solutions that meet our business needs.

Join our dynamic team at inetum2 as a System Administrator. In this role, you will be responsible for maintaining our IT infrastructure, ensuring system reliability, and providing exceptional support to our users. You will play a crucial part in system upgrades, security management, and troubleshooting issues to enhance operational efficiency.

We are seeking a talented Windows Systems Administrator to join our dynamic team at Inetum in Lisbon. As a key member of our IT department, you will manage and support Windows-based systems, ensuring optimal performance and security.

We are seeking a talented and driven Windows Expert to join our dynamic team at inetum2. In this role, you will leverage your expertise in Windows systems to enhance our infrastructure and support our clients' IT needs effectively. The ideal candidate will be passionate about technology and have a strong problem-solving mindset.

inetum2 is seeking a skilled System Administrator to join our dynamic team in Lisbon. In this role, you will be responsible for managing and maintaining our IT infrastructure, ensuring optimal performance, security, and availability. Your expertise will contribute to enhancing our systems and supporting various IT initiatives.

Role overview Dashlane is hiring a Director of Engineering in Lisbon, Portugal. This leader will guide engineering teams as part of the company’s broader leadership group. The Director will help shape the technical direction for Dashlane’s security products and play a key role in building a collaborative, high-performing culture. What you will do Lead and mentor engineering teams working on security solutions Set and influence the strategic direction for engineering initiatives Work closely with other leaders to ensure Dashlane’s products meet and exceed customer expectations Promote a culture of excellence and teamwork within the engineering organization What we are looking for Proven experience in software development Demonstrated success managing and growing engineering teams Ability to drive technical strategy and foster collaboration This position is based in Lisbon, Portugal.

Join Pipedrive as a Staff Software Architect and play a pivotal role in shaping the future of our software solutions. In this key position, you will lead architectural design, collaborate with cross-functional teams, and drive innovative engineering practices to optimize performance and scalability. Your expertise will guide the development of cutting-edge features and ensure the delivery of high-quality software that meets our customers' evolving needs.

Join inetum2 as a Software Architect and play a pivotal role in designing and implementing innovative software solutions. You will collaborate with cross-functional teams to enhance system architecture, ensuring optimal performance and scalability.

Role overview airapps is seeking a Software Architect based in Lisbon. This position shapes the technical direction of software projects, turning complex requirements into practical architecture. The architect plays a key role in ensuring applications remain scalable and reliable as business needs evolve. What you will do Design software architecture that aligns with current and future business goals Translate both technical and business requirements into clear, functional solutions Guide development teams to deliver high-quality software Encourage scalable and maintainable code across projects Requirements Experience designing software architecture for complex systems Ability to communicate technical ideas to engineers and stakeholders Collaborative approach to problem-solving and team leadership Strong interest in building reliable and scalable applications

Role Overview inetum2 is looking for a ServiceNow System Administrator based in Lisbon. This role focuses on managing and optimizing the ServiceNow platform to keep daily operations running smoothly. The position involves supporting users and implementing improvements that help streamline business processes. What You Will Do Oversee the day-to-day performance of the ServiceNow system Support users with system issues and questions Implement enhancements and updates to improve workflows and processes

Join our dynamic team as a Backup Systems Administrator where you'll leverage your extensive expertise in administering Enterprise Backup platforms. We seek a self-driven and meticulous professional who thrives in large-scale corporate settings and is dedicated to ensuring the reliability, continuity, and security of our data protection systems.Key Responsibilities:Administer, install, and operate leading Enterprise Backup engines, including:Commvault, Veeam, NetBackup, and more.Optimize and manage centralized backup systems to enhance performance, plan capacity, and enforce proper retention policies.Implement enhancements, refine configurations, and ensure data integrity and accessibility.Diagnose intricate incidents and execute effective corrective measures.Support technology evolution initiatives and integrations with infrastructure platforms.Collaborate closely with multidisciplinary technical teams to ensure seamless continuity of data protection services.