Summer 2026 Software Engineering Internship at ActiveCampaign | Krakow

Join ActiveCampaign as a Software Engineering Intern for Summer 2026 in Krakow! Our AC internship program offers a unique pathway for emerging talent, investing in your future career through hands-on experience. Designed for students and those transitioning careers, our program emphasizes mentorship, learning outcomes, and professional development to equip y…

We are searching for a passionate and talented Software Engineer to join our Agent Development team at ActiveCampaign. In this role, you will be instrumental in designing and implementing innovative software solutions that enhance our customer experience and drive our mission forward.You will work closely with cross-functional teams to analyze requirements, develop applications, and ensure the best practices in software development are followed. This is an exciting opportunity to contribute to projects that impact our users directly.

Join ActiveCampaign as a Senior Data Software Engineer, where your expertise in high-quality software engineering will shape our data management landscape. In this pivotal role, you will architect advanced data systems and uphold stringent best practices to ensure our platforms are both resilient and scalable. Your responsibilities will encompass designing and developing the software necessary for seamless data movement and management across our organization.

Join ActiveCampaign as a Staff Software Engineer and contribute to our mission of delivering exceptional customer experiences through innovative technology. As a Staff Software Engineer, you will play a pivotal role in developing robust software solutions that support our diverse clientele. You will collaborate with cross-functional teams to design, implement, and maintain high-quality software applications.

We are seeking an experienced Engineering Manager to join our dynamic team at ActiveCampaign. In this role, you will lead a talented group of engineers, fostering a culture of innovation while driving the development of cutting-edge solutions.Your responsibilities will include mentoring team members, overseeing project timelines, and collaborating cross-functionally to ensure alignment with business goals. You will play a crucial role in shaping our engineering practices and enhancing team performance.

SKELAR is a cutting-edge venture builder from Ukraine, dedicated to developing innovative tech enterprises on a global scale. Our mission is to create robust teams that excel in competitive international markets.Currently, SKELAR supports over 15 businesses across diverse sectors, including EdTech, HealthTech, and more. Our startups are regularly recognized as top contenders in various rankings and have achieved notable success in the App Store, with platforms that serve millions worldwide. Our ventures have also gained recognition in prestigious international media such as TechCrunch and Wired.We pride ourselves on our team of over 1500 skilled professionals who are driven by strong expertise and ambitious aspirations. Our people are our greatest asset, and we are committed to collaborating with the best talent available.We are excited to announce an opening for an Infrastructure Software Engineer at Leaply — our ecosystem of digital and physical products aimed at fostering healthy habits and enhancing quality of life. We operate in key global markets including the US, Tier 1 regions in Europe, and beyond.Having initially launched as a web platform, we have since expanded into mobile applications focused on habit formation with a subscription-based revenue model.By 2025, our team had tripled in size, and we anticipate further growth, aiming to double our business in 2026 and establish ourselves as a leading global player in HealthTech.Our team is on its third entrepreneurial venture together, boasting successful exits and profound insights into our niche and target audience. We prioritize agility, transparency in communication, and setting ambitious targets.Key Responsibilities:— Join as the inaugural member of a new Platform team, taking full ownership of building the infrastructure from the ground up — encompassing everything from strategy development to execution, impacting all facets of the business;— Evolve our rapidly growing infrastructure into a mature, organized platform, establishing clear service maps, dependencies, and ownership areas;— Elevate our use of Terraform and Kubernetes, developing a modular Infrastructure as Code (IaC) architecture, standardizing deployments, and implementing autoscaling for predictable and reliable releases;— Create a comprehensive observability system that includes metrics, logs, traces, and alerting, enabling proactive monitoring of system health rather than reactive troubleshooting;— Enhance security practices encompassing access management, secrets handling, and protection against external threats, making security an integral component of the engineering culture.

Join ActiveCampaign as a Senior Product Designer and play a pivotal role in shaping our product's design and user experience. You will collaborate with cross-functional teams to create innovative solutions that enhance user satisfaction and drive product success. Your expertise in user-centered design and your ability to translate complex ideas into intuitive interfaces will be essential as you work on challenging projects that impact thousands of users.

Join Kaseya, a leading provider of IT management software, as a Software Engineer II specializing in Golang. In this dynamic role, you'll collaborate with a talented team to develop innovative software solutions that empower IT professionals globally. Your expertise in Golang will be crucial in enhancing our applications and ensuring the highest standards of quality and performance.

Who We AreAt Pave, we are revolutionizing compensation management by creating the industry’s most advanced platform. Our solution integrates the largest real-time compensation dataset with cutting-edge AI and machine learning capabilities. Trusted by over 8,500 companies, we empower organizations to make informed compensation decisions with confidence.Renowned companies such as OpenAI, McDonald’s, Instacart, Atlassian, Synopsys, Stripe, Databricks, and Waymo leverage Pave to turn compensation strategies into competitive advantages. Our platform manages over $190 billion in total compensation expenditures, and 70% of the Forbes AI 50 utilize Pave for compensation benchmarking.We are at the forefront of transforming compensation into a real-time and predictive process. With $160 million in funding from leading investors like Andreessen Horowitz, Index Ventures, Y Combinator, Bessemer Venture Partners, and Craft Ventures, we are poised for significant growth.The Communicate Team @ PaveOur Communicate team develops products that enable clear, transparent, and trustworthy communication of compensation to employees and candidates. As a member of this team, you will take ownership of essential experiences used daily by thousands to understand pay and rewards. This is a unique opportunity to join as a founding engineer on a high-impact product team, influencing not only what is built but also how our team operates, shaping our roadmap, and establishing the engineering culture from the ground up. In your role as a Senior Software Engineer, you will contribute to creating elegant, enterprise-grade product experiences for some of the world’s leading companies. The immediate focus is on enhancing enterprise capabilities and developing AI-driven compensation intelligence features that aid organizations in making informed pay decisions and provide employees with a clearer understanding of their compensation.

At Qualtrics, we empower the world's leading brands to deliver outstanding frontline experiences, cultivate high-performing teams, and design products that resonate with users. More than just a platform, we are the pioneers and custodians of the Experience Management category, proudly serving over 18,000 clients globally. Building a category requires tenacity, creativity, and a willingness to challenge the status quo—but above all, it demands cohesive, high-functioning teams dedicated to our customers' success.Joining one of our teams means becoming part of a dynamic group that is encouraged to set ambitious goals and move swiftly to realize them. We embrace strategic risks and tackle complex challenges collaboratively, ensuring the best solutions emerge through discussion and iteration. Growth opportunities abound—whether you're ready or not, they'll find you. From retail to government to healthcare, we are on a mission to reintroduce humanity, connection, and empathy to the business world. Join over 6,000 individuals worldwide who believe this is work worth pursuing.Senior Software EngineerWhy We Have This RoleOur team consists of passionate engineers at the forefront of cloud computing and web scalability. We manage and analyze vast amounts of data while developing solutions utilized by millions daily. Our innovation simplifies complex research processes. Our teams have the autonomy to select the best technologies for each challenge, allowing for significant impact across our entire product stack—from web and mobile UI to data visualization, analysis, microservices APIs, and data storage and processing. How You’ll Find SuccessAs a Software Engineer at Qualtrics, you will thrive on constructing straightforward solutions to intricate scalability challenges. Designing systems within an agile framework to endure rapid growth and taking ownership of quality throughout the process is both a rewarding challenge and a key reason why Qualtrics is such an exciting place to work. How You’ll Grow Qualtrics offers a fast-paced, dynamic environment where you can expand your experience through impactful projects, cutting-edge tools and technologies, and collaborating with like-minded technical professionals.

Join nordsec as a Senior Full-Stack Software Engineer and play a pivotal role in developing innovative software solutions. In this position, you will collaborate closely with cross-functional teams to design, build, and maintain robust applications that meet our clients' needs. If you're passionate about technology and eager to contribute to exciting projects, we want to hear from you!

Join ARQ as a Senior Platform EngineerARQ stands at the forefront of the fintech revolution, transforming how individuals manage their finances on a global scale. We are dedicated to creating seamless and innovative solutions that empower users to interact with money without borders. As one of the fastest-growing companies in our sector, we offer a thrilling opportunity for talented individuals to significantly impact our culture, product, and expansion.If you are passionate about tackling substantial challenges and aspire to be part of a world-class team, ARQ is the ideal place for you!Your RoleWe seek an exceptional, hands-on Senior Platform Engineer who approaches infrastructure development with a software engineering mindset. Our engineering ethos emphasizes fully type-safe, declarative, and testable infrastructure as code. We invite engineers who share our values to apply.The perfect candidate will exhibit a fervent passion for programming, possess extensive knowledge, and demonstrate the ability to delve into any technical area necessary to empower our product engineering team to deliver unparalleled financial management solutions.You will design and implement high-quality automated systems to manage a multitude of backend services and databases across various Kubernetes clusters, processing thousands of data jobs and CI/CD builds weekly. If this excites you, we want to hear from you!Key ResponsibilitiesDesign and implement a secure, highly available infrastructure that supports a modern, rapidly growing financial services firm.Facilitate the rapid deployment of new infrastructure for our product engineering team through the thoughtful creation of shared Infrastructure as Code libraries, CLI tools, and coding patterns.Identify and resolve infrastructure issues and opportunities in collaboration with the broader engineering team.Strategize and execute infrastructure change rollout techniques, continuously integrating best practices and security enhancements.Oversee multi-region infrastructure and deployments to ensure compliance with security and availability standards.Develop, maintain, and optimize high-volume CI infrastructure and reusable pipeline templates for a microservices architecture.Implement GitOps workflows for declarative application deployments.

Kaseya® stands as the premier provider of comprehensive IT infrastructure and security management solutions tailored for Managed Service Providers (MSPs) and internal IT teams globally, driven by cutting-edge AI technology. Our exceptional suite of tools empowers organizations to effectively manage and secure their IT environments, fostering long-term business success. Over the past several years, Kaseya has consistently demonstrated strong double-digit growth and is supported by Insight Venture Partners www.insightpartners.com, a leading global private equity firm focused on high-growth technology and software businesses that catalyze transformative change across various industries.Since our inception in 2000, Kaseya has expanded its reach to serve customers in over 20 countries across diverse sectors, managing upwards of 15 million endpoints worldwide. To discover more about our innovative solutions and company culture, visit www.Kaseya.com.Kaseya is not your average workplace. We pride ourselves on our transparency and clear expectations. The countless individuals who thrive here are those who are committed to going the extra mile for our clients.Job Type: Full-Time Experience Level: Senior (7+ years)We are on the lookout for an accomplished Senior Python Developer who specializes in designing and architecting expansive systems. In this pivotal role, you will spearhead the development of robust, high-performance software platforms from the ground up. You will define the system architecture, guide critical technical decisions, and ensure our solutions are reliable, maintainable, and scalable for future growth. While experience with AI and automation is advantageous, your primary expertise will lie in scalable architecture, distributed systems, and engineering leadership. You will collaborate across various teams to deliver systems that underpin vital business functions and drive innovation.

Who We AreAt Pave, we are revolutionizing compensation management with the industry's foremost platform. By merging the largest real-time compensation dataset with advanced AI and machine learning capabilities, we empower over 8,500 organizations to make informed compensation decisions with unparalleled confidence.Prestigious companies such as OpenAI, McDonald’s, Instacart, Atlassian, Synopsys, Stripe, Databricks, and Waymo rely on Pave to transform their pay strategies into competitive advantages. Our workflows manage a staggering $190 billion in total compensation spend, with 70% of the Forbes AI 50 utilizing Pave for compensation benchmarking.The future of compensation is real-time and predictive, and we are leading the charge. With $160 million in funding from prominent investors like Andreessen Horowitz, Index Ventures, Y Combinator, Bessemer Venture Partners, and Craft Ventures, we are committed to making compensation more accessible and effective.The Data Platform Team @ PaveThe Data Platform team is the backbone of Pave's operations, managing the data infrastructure that connects our platform to HRIS, EMS, ATS, and partner systems. This high-impact role is essential for ensuring that Pave delivers maximum value to our clients. As a founding engineer on this team, you will not only execute on a defined roadmap but also influence the platform's evolution, priorities, and engineering culture from the ground up. In your role as a Senior Software Engineer, you will design and develop the connectors, pipelines, and platform capabilities that enable Pave to efficiently serve enterprise customers at scale, significantly impacting the architecture and reliability of our systems.

Join Geotab, a global leader in telematics and IoT, as a Software Developer. In this role, you will have the opportunity to innovate and develop cutting-edge software solutions that help businesses optimize their fleets and improve efficiency. Work in a collaborative environment where your contributions are valued and make an impact.

Enjoy Gaming develops live dealer shows and slot games for a global audience. The company values ownership, open communication, and honesty in every project and daily interaction. Role overview The Shift Engineer role is located in Krakow, Dolnośląskie, Poland. This position centers on ensuring that systems and equipment remain reliable and efficient during gaming operations. Collaboration with colleagues from different departments is key to maintaining safety and quality standards while supporting operational objectives. Main responsibilities Monitor and maintain equipment to ensure gaming sessions run without interruption. Respond promptly to technical issues that arise during assigned shifts. Work with other team members to troubleshoot and resolve equipment problems. Perform regular inspections and preventive maintenance tasks. Accurately document all maintenance and repair activities. Requirements Strong technical skills and a proactive approach to solving problems. Experience in a similar environment is helpful. An interest in gaming technology supports success in this position.

Are you passionate about creating powerful systems that enhance financial independence? Join DolarApp, a visionary startup dedicated to transforming access to dollar-based financial services throughout Latin America. As a Senior Python Engineer, you will architect, develop, and sustain scalable, secure, and high-performing backend systems that fuel our groundbreaking products. Collaborate with a skilled team to devise solutions that promote financial inclusion and revolutionize how individuals manage their finances. If you're eager to tackle intricate challenges and contribute significantly to a rapidly expanding company, we want to hear from you!What You'll Be DoingYou will be instrumental in developing the foundational infrastructure that supports our operations, including customer support bots and fincrime AI agents that will transform fintech operations.You will adopt a pragmatic approach to crafting our business logic, prioritizing clean code and maintainability, with a focus on rapid development through Test-Driven Development (TDD), Domain-Driven Design (DDD), and continuous integration and delivery.

Join Our TeamAt Hitachi Digital Services, we are on a mission to empower positive changes in the world through innovative digital solutions. Our vision focuses on the potential for transformation in urban spaces, environmental conservation, and life-saving technologies. By harnessing our collective expertise and cutting-edge technology, we help our clients navigate from the present to a bright future.We value diversity in experiences and perspectives, believing that your unique journey can contribute to our shared success.Your RoleCollaborate proactively with teams across the organization to address and resolve customer and team challenges.Analyze product usage data from live environments to devise strategies for optimizing operational costs and enhancing application maintainability.Identify performance bottlenecks in applications and propose solutions to ensure optimal performance, quality, scalability, security, and responsiveness.Contribute ideas to reduce costs in IT and business operations.Design, document, and implement technical solutions for various systems, while considering integration, maintenance, and migration aspects.Ensure the efficiency, security, and alignment with the organization's goals.Create compliance architecture methods, including data storage, metadata management, and change control.Plan, execute, and document unit tests, providing regular status updates and addressing issues.Work collaboratively with third-party engineers and tools.Act as the escalation point for all technical issues within projects.Demonstrate effective communication and teamwork skills, able to discuss technical challenges and approaches confidently with clients.

Tripadvisor helps travelers find experiences, advice, and options for any journey. Through brands like Tripadvisor, Viator, and TheFork, the company supports millions in discovering places to stay, activities to try, and restaurants to visit. Its platforms connect a global audience with travel content, recommendations, and marketplaces for experiences, lodging, and dining. Role overview The Senior Engineering Manager will join the Tripadvisor Experiences team, known as Viator. Viator provides access to over 400,000 experiences worldwide, from guided city tours to outdoor excursions. The team focuses on making it easy and reliable for travelers to plan and book memorable activities. Location and contract This is a hybrid role based in Krakow. The position is offered as a permanent employment contract. B2B contracts are not available for this role.

Saily is changing how travelers access mobile data, removing the need for roaming fees and physical SIM cards. The platform delivers fast, secure connectivity in more than 200 destinations, serving millions of customers and supporting hundreds of thousands of travelers worldwide. The Senior iOS Engineer role at Saily in Krakow centers on building solutions that directly address customer needs, from initial concept through to production. The team works within an AI-native Product Engineering environment, where engineers have access to AI agents that automate routine tasks. This approach frees up time for deeper, more meaningful work and encourages everyone to suggest and implement improvements. How the team works Engineers handle the full cycle of product development, solving real customer problems. AI tools automate repetitive work, letting engineers focus on high-impact tasks. Continuous improvement is expected and supported, team members regularly propose and drive changes. Curiosity and sharing knowledge are valued parts of the culture. The main goal is to create a smooth, reliable experience for travelers using Saily. Culture and values Saily puts growth, contribution, and impact first. The company values autonomy and provides context and AI-powered tools so engineers can do their best work, rather than focusing on hierarchy or rigid processes.