Backend Software Engineer I

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.

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.

At Qualtrics, we empower the world's leading brands to create outstanding frontline experiences, cultivate high-performing teams, and develop products that resonate with people. We aren't just a software platform; we are pioneers in the Experience Management domain, proudly serving over 18,000 clients worldwide. Building a new category demands tenacity, innovation, and a commitment to breaking the mold, but most importantly, it requires cohesive, high-performing teams dedicated to our customers.When you join our team, you'll become part of a dynamic group with the autonomy to establish ambitious targets and swiftly pursue them. We encourage strategic risks and collaboratively tackle complex challenges, continuously iterating until the optimal solution emerges. Growth opportunities will find you—whether you're in retail, government, or healthcare, we're on a mission to restore humanity, connection, and empathy to business. Join over 6,000 passionate individuals globally who believe in the value of meaningful work.Why We Need YouOur team consists of highly motivated engineers at the forefront of cloud computing and web scalability. We manage and analyze terabytes of data while creating solutions that are utilized by millions daily. We build tools that simplify complex research processes, and our teams have the liberty to choose the best technologies for each challenge. In our collaborative environment, you will find numerous opportunities to influence our full-stack product, from web and mobile UI to data visualization and analysis, microservices APIs, and data storage and processing.Your Path to SuccessAs a Software Engineer at Qualtrics, your passion for crafting straightforward solutions to complex scalability issues is key. Developing systems within an agile framework to support rapid growth while ensuring quality at every level is a rewarding endeavor—one of the many reasons Qualtrics is an exciting place to advance your career.Your Growth JourneyQualtrics offers a fast-paced, dynamic environment where you'll have the chance to enhance your skills through impactful projects, leverage cutting-edge tools and technologies, solve challenging problems, and collaborate with like-minded, driven technical professionals.

About Tripadvisor The Tripadvisor Group connects people to memorable experiences and strives to be the world’s most trusted source for travel and adventure. By harnessing our brands, technology, and capabilities, we link our global audience with partners through engaging content, travel insights, and two-sided marketplaces for experiences, accommodations, dining options, and more. Our portfolio includes renowned travel brands such as Tripadvisor, Viator, and TheFork. This position is a hybrid role based in Krakow on a permanent employment contract (Umowa o pracę). Please note that we are currently unable to offer B2B contracts. Key Responsibilities: Build and manage a high-performing technical team by recruiting, training, and mentoring engineers across various experience levels. Promote a collaborative and innovative team culture while advocating for effective Agile development processes. Craft project plans, timelines, budgets, and resource allocation strategies, ensuring timely and within-scope project delivery. Lead hands-on development across multiple layers of the software and data stack, conducting code and design reviews. Collaborate closely with principal engineers to define technology strategy and roadmap aligned with the broader organizational vision. Work with your Product Manager counterpart and business owner to prioritize product features against engineering tasks, balancing business needs with engineering integrity. Communicate effectively with both technical and non-technical stakeholders to ensure alignment on project objectives, commitments, and timelines. Establish and uphold engineering best practices to ensure deliverables are high quality and completed on schedule.

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.

Are you passionate about software development and looking to take your career to the next level? Kaseya is seeking a talented Software Engineer II with expertise in Node.js to join our dynamic team in Krakow, Poland. In this role, you will contribute to the design and implementation of innovative software solutions that enhance our products and services.As a key member of our engineering team, you will work closely with cross-functional teams to deliver high-quality software that meets the needs of our diverse client base. This is a fantastic opportunity for a motivated individual who thrives in a fast-paced environment and is eager to learn and grow.

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.

NFQ serves as a pivotal technology partner for HomeToGo, where a passionate team of software engineers and data science experts spearheads the innovation that fuels a marketplace showcasing the world’s largest selection of vacation rentals. As we expand HomeToGo’s tech team in Lithuania, we are on the lookout for top-tier talent to join our dynamic organization.HomeToGo, the premier marketplace for vacation rentals, boasts millions of listings from trusted partners like Booking.com, Vrbo, and TripAdvisor. Whether you’re searching for vacation homes, cabins, beach houses, apartments, condos, houseboats, castles, or farm stays, HomeToGo seamlessly integrates pricing, destination, dates, and amenities to help travelers find their ideal accommodation for any journey around the globe.Established in 2014, HomeToGo operates localized applications and websites in 25 countries across Europe, North America, South America, Australia, and Asia-Pacific. The company's portfolio also includes recognizable brands such as Agriturismo.it, AMIVAC, Casamundo, CaseVacanza.it, e-domizil, EscapadaRural, Tripping.com, and Wimdu.We are seeking a Senior Software Engineer (PHP) to join our Distribution Team, responsible for developing systems that connect HomeToGo with a multitude of partners—from individual agents to major industry players like Google, TUI, and Amadeus. In this role, you'll design and maintain diverse channels that fuel our growth, integrating our B2B tools and public channels into a cohesive, high-performance ecosystem that distributes millions of vacation rentals worldwide. You will collaborate with a team of PHP and React (TypeScript) Software Engineers focused on delivering self-service software projects with a strong emphasis on data quality. Our engineers engage throughout the entire software lifecycle and work with a wide array of technologies. Moreover, you will be part of a supportive team of intelligent, dedicated, and driven individuals who make the workplace enjoyable.

nfq is hiring a Senior PHP Software Engineer in Krakow. This position centers on building, maintaining, and improving software solutions using PHP. The work involves hands-on development with a focus on quality and reliability. Role overview This role calls for experience with PHP to support the full software lifecycle. The Senior PHP Software Engineer will contribute to both new development and ongoing enhancements of existing systems. Collaboration Work closely with colleagues from different teams to ensure products align with client needs. Communication and teamwork are important aspects of this position. What you will do Develop and maintain PHP-based software Enhance existing solutions for better performance and stability Collaborate with cross-functional teams on project delivery

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.

Fraud Alert:Beware of scams that might post fake job listings. To ensure your application is properly reviewed, please apply exclusively through our official website or through verified Sensor Tower profiles on platforms such as LinkedIn, Indeed, BuiltIn, or Hackajob. Sensor Tower will never request payment or financial information during the application process. Communications from Sensor Tower will only come from email addresses ending in sensortower.com. All interviews will be conducted via phone or Zoom, and any conversation will not be shifted to other email platforms or text messaging. If you encounter any issues, feel free to reach out to us. Kindly submit your resume when applying.To Recruitment Agencies:Sensor Tower does not accept unsolicited resumes from third-party agencies. Please refrain from sending resumes to our jobs alias, Sensor Tower employees, or any other company location. We will not be liable for any fees associated with unsolicited resumes, and we do not pay any external agencies without a signed agreement.About the Role:Are you passionate about developing products that handle vast real-world data?At Sensor Tower, we manage vast amounts of data to deliver insights that benefit thousands of customers. We seek inquisitive and driven early-career engineers eager to enhance their skills while assisting us in creating swift, dependable systems that simplify data accessibility and comprehension.You will collaborate closely with seasoned engineers, contribute to significant features from day one, and gain insights into the design, construction, and optimization of large-scale systems in production.If you thrive on learning, problem-solving, and delivering software that users depend on, we are eager to connect with you. We have a proven history of rapidly advancing talented juniors, and this role provides a unique opportunity to collaborate closely with senior leadership.Our Engineering Culture:We believe that simplicity is essential for reliability. We are searching for engineers who share our core values:- Simplicity: We avoid unnecessary complexity. We prefer using existing tools and straightforward solutions over the latest trends.- Quality: We craft code that is enjoyable to read, recognizing that code is written once but read many times. We do not compromise on quality and ensure our code is polished to a high standard.

At Qualtrics, we develop innovative software that empowers the world's leading brands to provide outstanding frontline experiences, cultivate high-performing teams, and create products that resonate with users. We are not just a platform; we are the pioneers and custodians of the Experience Management sector, serving over 18,000 clients around the globe. Building a new category demands resilience, tenacity, and a break from the norm—but most importantly, it requires cohesive, high-functioning teams committed to prioritizing our customers' needs.Joining our teams means becoming part of an agile group that is trusted to set bold objectives and swiftly work towards achieving them. We encourage strategic risks and tackle complex challenges collaboratively, ensuring the best solutions emerge through discussion and iteration. Growth opportunities abound here; whether ready or not, they will find you. From retail to government and healthcare, our mission is to restore humanity, connection, and empathy to business. Join over 6,000 colleagues worldwide who share our belief in the importance of work that matters.Senior Software EngineerThe Employee Experience (EX) TeamThe Employee Experience (EX) Team at Qualtrics comprises passionate engineers, the first fully operational in EMEA, focused on creating solutions that enable companies to understand and nurture their employees. We thrive on diagnosing and resolving intricate, ambiguous challenges for our customers, constantly innovating through AI-driven products to provide the best possible experiences. This team enjoys a high level of autonomy and ownership, empowered to influence product and technology roadmaps. Utilizing state-of-the-art tools and adopting a technology-agnostic stance allows us to work closely with clients and actual end-users. Our contributions have an impact on some of the largest employers globally, including Walmart, Nestle, JPMC, Coca-Cola, and KFC, all within a collaborative culture filled with enthusiastic individuals.Your ResponsibilitiesDesign and develop scalable, efficient, and user-friendly web-based solutions to address complex business challenges.Introduce new functionalities and enhance existing ones to maximize performance.Collaborate closely with fellow engineers, tech operations, and product managers, integrating feedback effectively.Engage in daily stand-up meetings, work alongside peers, prioritize feature development, and coordinate with...

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.

Kaseya delivers IT infrastructure and security management solutions to Managed Service Providers and internal IT teams around the world. Founded in 2000, the company operates in more than 20 countries and manages over 15 million endpoints across various industries. Backed by Insight Venture Partners, Kaseya continues to expand its global reach. More information is available at www.Kaseya.com. Role overview The networking products team in Krakow seeks a QA Automation Engineer (Python) who will focus on both automated and manual testing. The position centers on building and maintaining scalable test automation frameworks and collaborating with engineering teams to validate new features and improve product quality. What you will do Design, develop, and maintain automated test frameworks with Python, Pytest, and Playwright. Create reliable, reusable test scripts for web and API testing. Work closely with developers to validate new features and enhance functionality. Participate in design and requirements reviews to support testability and quality standards. Perform manual testing as needed for comprehensive QA coverage. Identify, document, and track defects through resolution. Develop and maintain test plans, test cases, and related documentation. Continuously improve testing processes, tools, and strategies. Ensure all QA activities align with company and industry best practices and compliance standards.

About OpenX OpenX helps digital media companies grow their business by building advertising technologies and marketplaces that deliver strong value for publishers and advertisers. Our team brings deep experience in designing and running high-scale ad marketplaces. We look for creative professionals who are interested in market design, technical progress, operational quality, and excellent partner service to advance digital advertising. Role Overview: Software Development Engineer in Test II OpenX is hiring a Software Development Engineer in Test II for the Full-Stack team in Krakow, Poland. This role suits engineers who enjoy exploring new challenges and want to work on both frontend and backend systems as part of a collaborative team. Technologies We Use Frontend: JavaScript/TypeScript, React, Material UI API: Python Backend: Java, Go, Erlang, Elixir CI/CD: Cloudbuild, Spinnaker How We Work The team follows Scrum but adapts processes as needed. SDETs at OpenX work closely with peers across frontend and backend areas and participate in the QA Guild, which focuses on improving tools and processes across the company. Scale and Impact 100% cloud-based platform on Google Cloud Platform (GCP) Over 380 billion ad requests processed daily More than 120,000 CPU instances used each day Over 140 TB of RAM utilized daily 50+ petabytes of data processed every week More than 1,200 production deployments each month

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.

Zooplusse seeks a Senior AI Engineer in Krakow to design and build advanced artificial intelligence solutions. This position involves hands-on work with a diverse team, contributing technical expertise to projects that impact millions of users. Role overview This role focuses on developing and implementing AI technologies. Collaboration with colleagues from various backgrounds is central to daily work, ensuring that solutions are both innovative and practical. What you will do Design and build AI systems to support large-scale projects Work closely with team members from different disciplines Contribute to technology that reaches a wide user base Location This position is based in Krakow.

Join our dynamic team at Tanium as a Senior Helpdesk Engineer and play a pivotal role in enhancing our customer support experience. You will be responsible for providing top-tier technical assistance and ensuring that our clients receive the highest quality of service. This is an exciting opportunity for you to leverage your expertise in IT support and help shape our service offerings.

About Kaseya Kaseya provides IT infrastructure and security management solutions for Managed Service Providers (MSPs) and internal IT teams worldwide. Our products help organizations manage and secure IT operations efficiently. Backed by Insight Venture Partners (www.insightpartners.com), Kaseya has grown steadily, serving clients in over 20 countries and managing more than 15 million endpoints. Learn more about our solutions at www.Kaseya.com. Role Overview The Software Engineer I will join the R&D team in Krakow, Poland, focusing on Kaseya's Backup product. This entry-level position centers on backend development and cloud-based systems. What You Will Do Work with experienced engineers to develop, test, and maintain backup services Gain hands-on experience with cloud platforms, containers, and CI/CD pipelines Participate in code reviews and receive mentorship Contribute to systems with high standards for reliability, performance, and scalability Team and Culture Kaseya values transparency and clear expectations. The team is committed to exceeding customer needs and supporting each other's growth.