Backend Software Engineer Internship jobs in Lisbon – Page 6 | RoboApply Jobs

Backend Software Engineer Internship jobs in Lisbon· Page 6

Results 101–120 of 395 for “Backend Software Engineer Internship” in Lisbon.

395 jobs found

101 - 120 of 395 Jobs
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NielsenIQ logo
Full-time|On-site|Lisbon, Porto

Join our dynamic team at NielsenIQ as a Senior Antibot Engineer, where you will be at the forefront of developing cutting-edge solutions to enhance our digital security measures. In this role, you will leverage your expertise to analyze and combat bot-related threats, ensuring the integrity of our platforms. Work collaboratively with cross-functional teams t…

Apr 13, 2026
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ValGenesis logo
Full-time|Hybrid|Lisbon

Join ValGenesis, a pioneering provider of digital validation solutions for the life sciences sector. Our innovative suite of products empowers 30 of the top 50 global pharmaceutical and biotech enterprises to achieve seamless digital transformation, ensuring total compliance and operational excellence throughout their product lifecycle. Discover the unique culture at ValGenesis, the gold standard for paperless validation in Life Sciences: Learn MoreAs an Application Engineer - Tier 1 at ValGenesis, you will hone your technical support skills while engaging in software troubleshooting and delivering exceptional customer service. In this role, you will tackle moderately complex software challenges, mentor junior application engineers, and collaborate with internal teams for system enhancements. This position is ideal for individuals seeking to deepen their problem-solving expertise and contribute to impactful technical projects.We offer a hybrid work schedule of 4 days per week, providing flexibility while fostering in-person collaboration at our Lisbon office. We believe that face-to-face interactions stimulate creativity and strengthen our community, which is vital to our continued success.

Jul 11, 2025
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Indicium AI logo
AI Engineer

Indicium AI

Full-time|On-site|Lisbon

About Indicium AI Indicium AI is a premier consultancy trusted by leading global enterprises to implement AI technologies at scale. As a dedicated AI-native consultancy, we possess extensive experience across various sectors including Financial Services, Energy & Utilities, Healthcare & Life Sciences, Retail & CPG, and Manufacturing. From strategic planning to execution and business outcomes, we deliver AI solutions with unparalleled speed, clarity, and effectiveness.Our team comprises over 600 AI specialists serving more than 50 enterprise clients from five global locations. We collaborate closely with top-tier partners such as Anthropic, Databricks, AWS, OpenAI, and Microsoft to provide cutting-edge AI solutions that yield measurable results. Position Overview We are looking for a skilled AI Engineer to design, build, and deploy robust AI systems powered by large language models (LLMs). This role merges software engineering with AI application, emphasizing the development of reliable and scalable applications instead of model training or research.In this position, you will leverage advanced LLM technologies to create sophisticated AI systems that address complex real-world challenges through multi-agent orchestration, intelligent tool integration, and efficient production workflows. Your primary focus will be on developing the orchestration layer that ensures these systems are production-ready, addressing failure modes, optimizing collaboration between agents, and guaranteeing consistent, dependable outputs at scale. You will blend strong software engineering principles with a profound understanding of LLM capabilities, limitations, and best practices for constructing trustworthy non-deterministic systems.

Mar 17, 2026
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Veeam Software logo
Full-time|On-site|Lisbon, Portugal

Join Veeam Software as a Software Developer in Test, where you will play a crucial role in ensuring the quality and reliability of our software products. We seek an enthusiastic individual with a strong background in software testing, particularly in Python or C#. You will collaborate with cross-functional teams to design and implement automated tests that enhance product performance and user experience.

Apr 7, 2026
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crossbordertalents logo
Manual Software Tester

crossbordertalents

Full-time|On-site|Lisbon, Lisbon, Portugal

Join our dynamic team as a Manual Software Tester for an exciting project in Lisbon! If you have a passion for ensuring software quality and possess a keen attention to detail, we would love to hear from you!Key Responsibilities:Design and execute comprehensive manual test cases.Identify, document, and report software bugs effectively.Collaborate closely with the development team to troubleshoot and resolve issues.Verify that functional requirements are satisfied.Actively participate in the ongoing enhancement of QA processes.

Nov 22, 2024
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airapps logo
Full-time|On-site|Lisbon

Role overview airapps is looking for a Mobile Software Architect based in Lisbon. The focus of this position is to design and build mobile applications that deliver strong user experiences and reliable performance. Success in this role depends on technical depth and a hands-on approach to mobile architecture. What you will do Design and implement mobile solutions that prioritize usability and speed Collaborate with teams from different disciplines to ensure technical alignment Establish and uphold architectural standards across mobile projects Mentor junior developers and encourage their professional growth Requirements Extensive experience in mobile application development Strong interest in influencing mobile technology strategy Ability to work with others to address technical challenges Willingness to share expertise and support less experienced engineers

Apr 24, 2026
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Veeam Software logo
Full-time|On-site|Lisbon, Portugal

Veeam Software is hiring a Performance Quality Assurance Engineer in Lisbon, Portugal. This position centers on maintaining high standards for software quality through detailed performance testing and analysis. Role overview The Performance QA Engineer works closely with developers to spot potential performance issues in software products. The role involves analyzing system behavior, identifying bottlenecks, and supporting efforts to optimize performance. What you will do Conduct thorough performance testing on software products Analyze test results to uncover performance bottlenecks Collaborate with development teams to address and resolve issues Support the implementation of solutions aimed at improving software performance Collaboration This role requires frequent interaction with developers and other team members to ensure performance goals are met and maintained throughout the software lifecycle.

Apr 29, 2026
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Remote People logo
Full-time|Remote|Lisbon (Office), or Europe (remote)

Remote People creates technology that streamlines global payroll, benefits, taxes, and compliance. The company supports organizations in hiring and managing talent across borders, making it easier for teams to operate internationally. The workplace values diversity and welcomes candidates from all backgrounds. The team aims to foster an inclusive environment where different perspectives are respected and encouraged. Role overview The Lead Engineer provides both hands-on technical leadership and guidance to the engineering team. This position shapes product architecture, defines technical standards, and encourages a culture of learning and continuous improvement within the group. This role can be based in Lisbon at the office or performed remotely from anywhere in Europe.

Apr 27, 2026
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Datadog logo
Full-time|Hybrid|Lisbon, Portugal

Join our dynamic Notebooks team at Datadog as a Senior Staff AI Engineer, where your expertise in AI and machine learning will be pivotal. Our Notebooks platform empowers users to perform ad-hoc data analysis, collaborative investigations, and technical documentation seamlessly. We are currently enhancing our offerings with AI-driven workflows that facilitate natural language data analysis, assist in graph generation, and automate investigative processes. In this role, you will lead the technical efforts to design, develop, and deploy innovative AI features that set industry standards. We seek a product-focused ML engineer who possesses strong technical skills, exceptional communication abilities, and a proven history of executing impactful projects from inception to completion.At Datadog, we prioritize a collaborative office culture that fosters creativity and strong relationships. Our hybrid work model ensures that our team members can achieve an optimal work-life balance.

Feb 23, 2026
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YLD logo
Full-time|On-site|Portugal

Location: Portugal Department: Engineering Employment: Full-time About YLD: At YLD, our mission is to empower clients to excel in their fields. We are dedicated to enhancing our clients' capabilities, enabling them to outpace their competition. Our success stems from our clients' achievements and the extraordinary talent within our company. As a leading software engineering and design consultancy, we create sustainable digital solutions that extend beyond our partnerships, with offices located in London, Lisbon, and Porto. About the Role: As an AI Engineer, you will be integral to a dynamic team, developing cutting-edge products. We seek individuals who are curious, passionate, and eager to innovate. You will excel in problem-solving and building scalable, resilient architectures. Effective communication and teamwork are essential in our fast-paced engineering environment, where you will achieve remarkable results and bring exciting projects to life. About You: As a YLD Software Engineering Consultant, you are a highly skilled developer who exemplifies excellence in software engineering and enjoys mentoring others. You will have the chance to work on intriguing projects that challenge both product and methodology. We embrace an Agile (Scrum) environment with a test-first approach, valuing practices such as pair programming and thorough code reviews. Your enthusiasm for problem-solving and collaborative learning will be key as you engage with your team. Your Day-to-Day Responsibilities Will Include: Developing exceptional AI-driven features tailored to our clients' customers, enhancing their Digital Platforms with intelligent capabilities. Consistently implementing changes to products, including AI model integrations, prompt optimizations, and system enhancements, as we strive for a complete CI/CD model. Collaborating closely with your team on both conventional engineering and AI projects, continually pushing the boundaries to create smarter systems. Participating in regular presentations to showcase your work — from AI experiments to production deployments — to your department and the wider company.

Mar 5, 2026
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Dashlane logo
Full-time|On-site|Lisbon, Portugal

Join Dashlane as a Staff Platform Engineer - Web and play a vital role in shaping our web platform. We are looking for a talented engineer who is passionate about building scalable and high-performance web applications while leveraging modern technologies. You will collaborate with cross-functional teams to design, develop, and maintain our platform, ensuring a seamless user experience.

Mar 17, 2026
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Veeam Software logo
Full-time|On-site|Lisbon, Portugal

Join Veeam Software as a Junior to Mid-Level Quality Assurance Engineer where you will play a crucial role in ensuring the quality and reliability of our products. You will collaborate with cross-functional teams to design, implement, and execute test cases while actively participating in the software development life cycle.

Apr 2, 2026
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Mollie logo
Full-time|On-site|Lisbon

Your OpportunityAt Mollie, we are dedicated to revolutionizing payments and money management for businesses across Europe. Our vision is to empower every business by simplifying financial transactions and operations.Currently, we support over 250,000 businesses with our comprehensive solution, which streamlines payment processes and enhances financial management. Our diverse team of 850 professionals, specializing in product development, finance, customer support, commerce, and engineering, spans from Lisbon to London.As an AI Application Engineer I, you will play a pivotal role in designing, developing, integrating, and scaling AI-driven applications and workflows that significantly impact our operations. Collaborating closely with Machine Learning Engineers and Application Engineers across various domains, you will create pragmatic AI solutions that serve both internal users and our customers.This position is ideal for an engineer passionate about applied AI, product integration, and the development of effective systems using modern tools. Your focus will be on leveraging existing AI models, platforms, and open-source software to build dependable, production-ready applications that advance Mollie's mission to eliminate financial bureaucracy.Key Responsibilities:Design and customize user-friendly frontend interfaces for AI-powered tools and platforms.Develop and integrate agentic AI applications, tools, and workflows for both internal and customer-facing scenarios.Create agent-based and workflow-driven solutions using modern AI orchestration tools, employing both low-code and code-first methodologies.Utilize and extend open-source AI software, including LibreChat and browser-based automation tools.Build, integrate, and maintain MCP Servers and associated interfaces to facilitate safe and efficient interaction between AI systems and internal tools.Contribute to application development primarily using Typescript and Python, with additional integration opportunities for those with Java expertise.Qualifications:1–3 years of relevant software engineering experience, particularly in frontend engineering.A Bachelor's Degree in Computer Science, Computer Engineering, or a related field.

Apr 30, 2026
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Veeam Software logo
Full-time|On-site|Lisbon, Portugal

Join Veeam Software as a Quality Assurance Automation Engineer specializing in Java!As a key member of our team, you will be responsible for designing, developing, and executing automated test scripts to ensure the quality and performance of our software products. Your expertise in Java will be pivotal in enhancing our testing frameworks and driving continuous improvements in our QA processes.

Apr 30, 2026
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TransPerfect logo
Full-time|On-site|Lisbon, Lisboa, Portugal

Join TransPerfect, a well-established company that embodies a dynamic start-up culture, and become part of a team that values creativity and entrepreneurial spirit. We are currently seeking a Junior Frontend Engineer to enhance our global team, where you will play a pivotal role in the quality, development, and execution of our software products. If you're eager to contribute to a growing organization and make a significant impact, we want to meet you!About Our TechOps Team:The TransPerfect TechOps team has been integral to our success for over a decade, delivering technology and services that have greatly improved the efficiency of our clients and colleagues. From enhancing workflows for our team members to developing foundational services for our GlobalLink platform, we focus on creating scalable client interfaces that empower users to navigate complex ecosystems seamlessly.

Aug 20, 2025
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Sensor Tower logo
Full-time|On-site|Lisbon

Important Notice: Fraudulent job postings can appear on various platforms. To ensure your application is considered, please apply exclusively through Sensor Tower's official website or authorized postings on sites like LinkedIn, Indeed, BuiltIn, or Hackajob. We will never request payment or financial information during the application process. All communications from Sensor Tower will come from email addresses ending with sensortower.com. Interviews will be conducted via phone or Zoom, and we will not transition conversations to any other email or text service. If you encounter any issues, feel free to reach out to us. Please include your resume with your application.To Recruitment Agencies: Sensor Tower does not accept unsolicited third-party resumes. Please refrain from sending resumes to our job aliases or to any Sensor Tower employees. We are not liable for any fees related to unsolicited applications.About the Role:Are you passionate about developing products that interact with extensive real-world data?At Sensor Tower, we handle vast amounts of data to deliver insights that thousands of clients rely on. We are seeking inquisitive and motivated early-career engineers eager to enhance their skills while collaborating on the creation of fast, reliable systems that simplify data accessibility and comprehension.You will work closely with seasoned engineers, contribute to significant features from the outset, and gain insights into the design, construction, and optimization of large-scale systems in a production environment.If you thrive on learning, solving challenges, and delivering software that users depend on, we would love to connect with you. We have a proven track record of nurturing talented juniors and this position provides a unique opportunity to work alongside senior leadership.Our Engineering PhilosophyWe adhere to the principle that 'Simplicity is crucial for reliability.' We seek engineers who share our core values:- Simplicity: We favor straightforward solutions and prefer utilizing existing tools over unnecessary complexities.- Quality: We produce code that is easy to read, understanding that code is written once but read multiple times. We prioritize quality and strive for excellence in our work.

Feb 12, 2026
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Sensor Tower logo
Full-time|Remote|Lisbon

Important Notice:To ensure your application is considered, please apply exclusively through our official website or directly associated posts on platforms like LinkedIn, Indeed, BuiltIn, or Hackajob. Sensor Tower will never request any form of payment or sensitive information such as bank details during the application process. All communications from Sensor Tower will originate from email addresses ending in sensortower.com. Interviews will be conducted via phone or Zoom, and we will not move conversations to alternative email addresses or text messages.To Recruitment Agencies:We do not accept unsolicited resumes. Please refrain from sending resumes to our job alias, employees, or any other locations associated with Sensor Tower, as we will not be responsible for any fees related to unsolicited applications.About the Role:We are seeking innovative engineers to enhance our database operations and manage our expanding data volumes, currently in the tens of terabytes. Your role will involve gathering insightful data and contributing to the development of exceptional products and features that cater to our users' needs.A Day in the Life:As noted by our Engineering Team Lead, Sasha Yelkovenka, the role involves working with significant data volumes, ensuring our customers access it swiftly, and providing them with convenient tools for data consumption. The team thrives on a culture of ownership and collaboration, often partnering over Zoom to share knowledge and achieve optimal results.

Feb 11, 2026
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Thought Machine logo
Full-time|On-site|Portugal, Lisbon

At Thought Machine, we are on a groundbreaking mission to eliminate outdated technology from the banking sector. Our innovative core and payments technology is designed to operate seamlessly in the cloud, laying the groundwork for modern banking.Having expanded rapidly over the past few years, our team now comprises over 550 talented individuals across offices in London, New York, Singapore, Sydney, and our newly launched Engineering Hub in Lisbon. With more than £500 million raised in funding, we boast a diverse group of investors including Molten Ventures, Eurazeo, Intesa Sanpaolo, Temasek, Nyca Partners, JPMorgan Chase Strategic Investments, and Standard Chartered Ventures.We cultivate a dynamic workplace culture that encourages excellence and enjoyment, often recognized for our outstanding employee experience. Sifted magazine has honored us with one of the highest Glassdoor ratings among UK fintech companies, and we have been acknowledged by Global Finance Magazine as one of the world's most innovative fintechs. Furthermore, the Financial Times recognized us as one of Europe’s fastest-growing companies for two consecutive years, and we were named a UK Best Employer for 2026.As an Engineering Manager, you will play a crucial role in driving our software engineering initiatives at Thought Machine. Our engineers tackle unprecedented engineering challenges across the technology stack, producing high-quality code that is scalable, secure, and user-friendly. You will oversee the complete lifecycle of projects, from engineering design to implementation, ensuring that both backend services and frontend experiences meet our clients' diverse needs.We serve a wide range of clients, from the largest financial institutions to regional banks. Your role will involve crafting customizable user experiences that cater to various personas, bridging the gap between back-end and front-end systems to deliver exceptional solutions.This is a full-time, permanent position based in our Lisbon office, where collaboration and innovation are at the forefront of our engineering efforts.

Apr 29, 2026
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Air Apps logo
Full-time|On-site|Lisbon

About Air AppsAt Air Apps, we are driven by the belief that innovation knows no bounds. Founded in 2018, our mission is to revolutionize the way individuals and entrepreneurs manage their resources through the world's first AI-powered Personal & Entrepreneurial Resource Planner (PRP). With a passionate team and a commitment to excellence, we have achieved over 100 million downloads globally from our bases in Lisbon and San Francisco.We challenge conventional approaches daily, pushing the limits of AI to create solutions that genuinely impact lives. Here, your creativity will shape products that empower users worldwide.Join us as we embark on this transformative journey in resource management and make a lasting difference.The RoleAs a Release Engineer at Air Apps, you will play a crucial role in ensuring an efficient and reliable release process for our applications. You will manage versioning, build management, and deployment workflows, guaranteeing seamless delivery of new features and updates to our users.Your responsibilities will include collaborating with development, QA, DevOps, and product teams to optimize release cycles, mitigate risks, and uphold high standards in software delivery.

Feb 17, 2026
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mlabs logo
Full-time|$200K/yr - $275K/yr|Remote|Remote — Lisbon, Lisbon, Portugal

Location: Fully Remote - NYC preferred. Open to US remote or EU remote (Must be able to overlap with EST 6+ hours daily)Employment Type: Full-timeCompensation: $200,000 - $275,000Join an exciting opportunity with our client, a pioneering leader in the blockchain industry, as a Senior Golang Engineer on their core backend team. They have developed an innovative real-time parimutuel prediction market platform on Solana, designed to seamlessly integrate rapid 60-second to 30-minute prediction markets into both livestream environments and web platforms.After successfully raising a $1M pre-seed round in April 2026, led by key venture players in the Solana ecosystem, they are expanding their infrastructure to accommodate high-concurrency traffic patterns. As one of the initial backend engineering hires, you will take ownership of essential systems that facilitate market creation, settlement, and automated payouts during high-stakes global livestream events.Key Responsibilities:System Ownership: Architect, develop, and sustain production-grade, low-latency backend systems capable of managing thousands of concurrent market resolutions.Concurrency & Performance: Implement advanced Go concurrency patterns to handle real-time data flows and high-frequency transaction processing.Infrastructure & Scaling: Oversee and optimize distributed systems, ensuring idempotency, consistent ordering guarantees, and robust failure recovery.Observability: Spearhead production debugging initiatives using logs, metrics, tracing, and profiling to ensure 24/7 system reliability.Technical Autonomy: Operate independently in a dynamic startup environment, influencing the foundational architecture of an emerging product category.

Apr 8, 2026

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