Backend Software Engineer Internship

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 team as a Senior .NET Software Engineer at inetum2, where you will have the opportunity to enhance and develop innovative software solutions. You will be responsible for designing, coding, and implementing high-quality software applications using .NET technologies.We are looking for passionate individuals who thrive in a collaborative environment and are eager to push the boundaries of technology. Your expertise will play a crucial role in our projects and will directly impact client satisfaction and project success.

Join Datadog, a leading monitoring and analytics platform for developers, IT operations teams, and business users. As a Software Engineer at the early career level, you will be a vital part of our team, contributing to the development of innovative solutions that enhance our service offerings.Your role will involve collaborating with experienced engineers, learning best practices, and applying your skills to real-world projects. We are looking for motivated individuals who are eager to learn and grow in a fast-paced environment.

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.

Join our dynamic team at tgs as a Junior Software Engineer where you will play a crucial role in ensuring the quality and execution of our innovative software products. As part of a global technology department, you'll collaborate with a talented and diverse group of professionals located in cities such as Barcelona, New York, London, Manchester, Bucharest, and India. If you're eager to be part of a rapidly growing company and make a meaningful impact, we would love to hear from you!About TransPerfect – TechOps:The TransPerfect TechOps team is integral to our success, having provided essential technology and services for over a decade. We are dedicated to simplifying workflows for our colleagues and delivering core services that empower our clients through the GlobalLink platform, offering scalable interfaces that make complex ecosystems accessible to all users.

Join GoCardless as a Software Development Engineer IIAt GoCardless, we are redefining the way businesses manage their payments. As a leading global bank payment provider, we empower over 100,000 businesses — from innovative start-ups to renowned enterprises — to seamlessly collect and send payments using direct debit, real-time payments, and open banking.With an impressive processing volume exceeding US$130bn annually across more than 30 countries, we facilitate both recurring and one-time payments without the hassles of chasing payments or incurring prohibitive fees. Our cutting-edge AI-powered solutions enhance payment success rates while minimizing fraud. We are proud to connect with over 2,500 banks worldwide, enabling our clients to make faster, informed decisions.Headquartered in the UK, with offices in London, Leeds, Australia, France, Ireland, Latvia, Portugal, and the United States, GoCardless is committed to fostering an inclusive and accessible workplace. If you require any support or adjustments during the hiring process, please contact your Talent Partner — we are here to assist you!We understand that you may not meet every single requirement. If you are passionate about this role, we encourage you to apply!Engineering at GoCardlessAs a Software Development Engineer II, you will tackle a variety of technical challenges, from simplifying banking schemes to optimizing dashboard performance. You'll thrive in our engineering culture if:You are eager to promote an exceptional engineering culture both at GoCardless and within the broader tech community.You enjoy collaborating with diverse teams and learning from individuals with different backgrounds.You take pride in your work and its positive impact on real customers.Our engineers actively contribute to the engineering community by engaging in Open Source Software projects (check out our Github) and sharing insights through post-mortems, conferences, and our blog.

Join Speechify as a Senior Software Engineer focused on enhancing core experiences. In this pivotal role, you will design, develop, and implement innovative solutions that drive user engagement and satisfaction. Collaborate with cross-functional teams to architect scalable software solutions that push the boundaries of technology.

About the RoleThe Software Engineer at iCapital Network will be responsible for developing new features, enhancing existing functionalities, and resolving defects across one or more of iCapital's software platforms. You will collaborate closely with our Product Management team throughout the software development lifecycle, detailing requirements, reviewing ongoing work, and addressing issues identified during manual testing. The role primarily involves backend development using Ruby on Rails and frontend work with React.At iCapital, we value expertise across various programming languages and business domains. We seek passionate team members who possess both technical depth and a strong commitment to delivering high-quality end products to our clients. If you are not already familiar with the technologies we use, you will have the opportunity to learn on the job, with support from our management and mentorship programs.

Join SIXT as we redefine the future of mobility through innovative technology. As a Software Engineering Manager, you will spearhead engineering initiatives for critical platforms that drive our global fleet operations and enhance revenue optimization. Your teams will develop systems for fleet planning, lifecycle management, operational decision-making, and logistics, enabling data-driven strategies across a vast network of vehicles worldwide.In collaboration with product managers, data scientists, analysts, and business stakeholders, you will help design and scale solutions that forecast demand, improve fleet utilization, and facilitate real-time operational decisions. As we modernize our core platforms, your contributions will directly impact operational efficiency, customer satisfaction, and overall business performance within our global mobility ecosystem.YOUR ROLE AT SIXTLead and cultivate high-performing engineering teams, promoting a culture of ownership, continuous improvement, and technical excellence, with a focus on adopting modern software development practices, particularly in AI and agentic engineering.Empower teams to create and deliver scalable, reliable systems while fostering modern engineering practices and robust architectural thinking.Serve as a mentor and coach, guiding autonomous teams in overcoming complex technical and organizational challenges.Collaborate closely with product leaders to shape product vision, translating business challenges into technical solutions that deliver measurable value to customers and the business.Drive execution and delivery of large-scale cross-functional initiatives involving engineering, data science, analytics, and business stakeholders.Balance speed and quality by managing trade-offs between rapid delivery, system scalability, and long-term technical sustainability.

Join our dynamic team as a Senior Software Engineer where you will leverage your expertise to design and implement robust back-end systems utilizing Java and Spring frameworks. You will play a key role in developing and integrating data from diverse sources to enhance and elevate application performance.Your responsibilities will include optimizing application efficiency to ensure seamless user experiences, troubleshooting and debugging across the entire stack, and staying abreast of emerging technologies to propose innovative solutions. You will also engage in collaborative code reviews to maintain high standards of code quality and best practices.Work closely with product managers, designers, and fellow developers to deliver exceptional software solutions in a timely manner. Your ability to document your work will contribute to our knowledge base and continuous improvement efforts.

Speechify is looking for a Software Engineer, Platform, to join the team in Lisbon. This position centers on building and refining the core platform that supports how users engage with Speechify’s products. The work directly shapes user experience and drives efficiency throughout the company. What you will do Develop and maintain essential platform features that enable Speechify’s products Collaborate with engineering, product, and design teams to deliver improvements Use modern technologies to create reliable, scalable solutions Share ideas and feedback to influence the platform’s direction Requirements Experience building software platforms or infrastructure Comfort working within collaborative and creative teams Interest in enhancing how people interact with technology Located in Lisbon, Portugal

As a Linux System Administrator at Inetum, you will play a crucial role in ensuring the availability, performance, and security of Linux server environments for our diverse clientele. You'll deliver operations, automation, and Level 2/3 support while participating in a rotating on-call duty to maintain service continuity.CONTEXTJoin a shared services team of five administrators dedicated to supporting multiple client environments in a multi-tenant architecture.Take responsibility for the operational availability, performance, and security of our Linux infrastructure across both on-premises and cloud platforms.Engage in a rotating on-call schedule to uphold service continuity as per contractual SLAs.Main Responsibilities:System Administration:Install, configure, and maintain Linux servers (such as Ubuntu, Debian, CentOS, RHEL).Perform regular patching, upgrades, and system hardening.Manage users, groups, permissions, and access policies effectively.Ensure system stability, performance, and carry out capacity planning.Shared Services and Platforms:Oversee shared services (e.g., DNS, NTP, SMTP relays, web servers, file servers).Provide support to application teams utilizing the shared Linux infrastructure.Maintain and optimize virtualization and/or container platforms (VMware, KVM, Docker, Kubernetes, based on the environment).Contribute to the standardization of environments and configurations across teams.Monitoring, Incident Management, and On-call:Configure and maintain monitoring and alerting tools (e.g., Zabbix, Prometheus, Nagios, Grafana).Investigate and resolve incidents affecting shared systems and services.Participate in a rotating on-call duty schedule (24/7 support):Respond to alerts within defined SLAs.Conduct first-level analysis, mitigation, and escalate issues as necessary.Communicate effectively with stakeholders during major incidents.Contribute to post-incident reviews (RCA) and ongoing improvement actions.Security and Compliance:Implement security best practices and hardening guidelines on Linux systems.Collaborate with security teams to identify, prioritize, and remediate vulnerabilities.Manage firewalls, VPN access, and ensure secure remote access (SSH, bastion/jump hosts).Ensure compliance with internal policies and external regulations when applicable.Backup, Recovery, and Continuity:Regularly test recovery and disaster scenarios.Assist in defining and meeting RPO/RTO targets for critical services.Automation and Industrialization:Utilize scripting languages (Bash, Python, etc.) to automate repetitive operational tasks.Employ configuration management tools (e.g., Ansible, Puppet, Chef, SaltStack) to maintain consistent environments.Contribute to infrastructure as code and standard operating procedures.

As a Senior Full-Stack Software Engineer at Inetum, you will join a globally distributed team of developers dedicated to crafting innovative software solutions. Your role will involve collaborating with diverse teams across various regions to create scalable, secure, and efficient applications that align with both business objectives and technical standards.Key Responsibilities:Architect and implement robust full-stack applications following best practices and technology roadmaps.Engage in requirement analysis, design solutions, and contribute to system architecture discussions.Develop and enhance user-centric front-end interfaces and back-end services.Work closely with cross-functional teams to ensure seamless integration, testing, and deployment.Drive improvements in software design, fostering functional and technical excellence.Conduct comprehensive integration tests and User Acceptance Testing (UAT) to maintain high quality.Collaborate with central teams to uphold secure coding practices and robust Software Development Life Cycle (SDLC) processes.Champion SDLC best practices, with a focus on automation, CI/CD pipelines, and streamlined deployments.Mentor team members and advocate for code quality through regular code reviews and adherence to development standards.Embrace new technologies, frameworks, and methodologies to enhance productivity.Facilitate efficient support collaboration with relevant IT teams, particularly in Production Support (APS).

About UsAt Supermodular AI, we empower enterprises to embrace the AI transformation journey. Our philosophy centers on actionable strategy stemming from execution.While many organizations recognize AI's potential, they often find it challenging to convert that vision into tangible operational changes. The technology itself is rarely the barrier; instead, the integration of AI into established, intricate systems, workflows, and engineering teams—developed over many years—is where the challenge lies. We assert that AI transformation cannot solely be conceptualized through strategic documents; genuine strategy materializes through the construction, deployment, and operation of AI systems within the organization.Our focus is on collaborating directly with enterprise IT and software teams, designing and implementing AI systems in real-world environments. We assist engineering teams in adopting innovative AI-native development practices, frameworks, and technical assets that redefine how software is built and operated. Additionally, we develop bespoke AI systems to facilitate modernization and harmonization efforts where traditional methods have faltered.Our team boasts a proven history of creating impactful AI systems and scaling engineering teams within complex enterprises. If you thrive on tackling challenging enterprise issues and transforming ambitious concepts into operational systems, you will find your place at Supermodular AI.Your ResponsibilitiesAs a Forward Deployed Software Engineer at Supermodular AI, you will collaborate closely with enterprise IT and software teams to convert AI into reliable systems that function in production.You will be immersed in real enterprise settings, partnering with engineers and technical leaders to comprehend current operational systems and identify where AI can drive significant enhancements. Your role will involve navigating complex system landscapes, uncovering opportunities, formulating practical solutions, and constructing the systems that realize these solutions.Your work will encompass the entire engagement lifecycle. You will help shape technical strategies from the outset, design architectures tailored to enterprise constraints, and implement the systems that yield meaningful operational advancements.Many challenges you will face may not be fully articulated at the outset. Your mission is to clarify these environments by proposing actionable solutions and building systems that propel the organization forward. At its core, this position is about one fundamental goal: creating systems that translate AI aspirations into functional capabilities.

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 our global team at tgs as a Software Engineer, where you will play a crucial role in ensuring the quality, development, and implementation of our innovative software solutions.As a key member of our technology department, you will collaborate with a diverse group of talented professionals located in cities such as Barcelona, New York, London, Manchester, Bucharest, and India. If you are eager to join a fast-growing company and make a significant impact, we would love to hear from you!About TransPerfect – TechOps:The TechOps team at TransPerfect has been instrumental in our success over the past decade, providing technology and services that have streamlined processes for both clients and colleagues. From enhancing workflows to building the foundational services of our GlobalLink platform, we create scalable client interfaces that enable users to navigate complex ecosystems effortlessly.

About GapstarsGapstars, a premier software development services firm based in the Netherlands, specializes in cultivating remote, agile teams in Sri Lanka and Portugal for groundbreaking tech companies. Our workforce of over 275 TechStars is dedicated to transforming scalable software into high-performance products that redefine industry standards. We partner with ambitious tech firms aiming to dominate their markets.Position OverviewWe are looking for a Senior Software Engineer to enhance a rapidly expanding FinTech’s cloud-based data and analytics platform utilized by leading global market players. You will design and implement dependable, secure, and high-quality systems that facilitate extensive data distribution, with a strong emphasis on hands-on engineering, automation, and data visualization.This role is hybrid, located in Lisbon, Portugal.Key ResponsibilitiesDrive technological advancements within a fast-growing fintech company by shaping its tech solutions.Interpret business requirements and convert high-level goals into well-structured, scalable solutions utilizing the best practices of GCP.Develop robust, secure, and reliable systems, implementing practical workarounds to ensure service continuity during failures.Plan and execute well-structured releases while minimizing disruption and establishing clear rollback strategies.Guide and support junior team members, promoting a culture of learning and professional development.QualificationsAt least 5 years of experience in software development using Python and/or Java.Strong expertise in databases and cloud data warehouses (SQL, PostgreSQL, MySQL, etc.).

Join Gapstars as a Mid-Level Software Engineer!At Gapstars, we pride ourselves on building innovative remote teams across Sri Lanka and Portugal, dedicated to delivering exceptional software solutions for forward-thinking tech companies. Our dynamic team of over 275 TechStars is committed to transforming scalable software into high-performance products that reshape industries. We collaborate with ambitious partners in technology, striving to excel in their respective markets.Role OverviewWe are looking for a Mid-Level Software Engineer who will be instrumental in supporting a rapidly expanding FinTech cloud-based data and analytics platform utilized by leading global market players. Your role will focus on developing reliable, secure, and high-quality systems that facilitate large-scale data distribution, emphasizing hands-on engineering, automation, and data visualization.This is a hybrid role based in Lisbon, Portugal.Key Responsibilities:Contribute to the growth of our FinTech solutions by shaping technology initiatives.Translate high-level business objectives into scalable, architecturally sound solutions leveraging GCP.Develop robust, secure systems, ensuring effective workarounds for service continuity during failures.Plan and execute structured releases to minimize disruptions, with clear rollback strategies.Mentor junior team members, promoting a culture of continuous learning and development.Essential QualificationsAt least 2 years of experience in Python and/or Java.Strong expertise in databases and cloud data warehouses (e.g., SQL, PostgreSQL).

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 inetum2 as a Windows System Administrator in Lisbon! In this critical role, you will be responsible for managing and maintaining Windows server environments, ensuring optimal performance and security. Collaborate with cross-functional teams to implement solutions that drive efficiency and reliability.