Full-Stack QA Engineer (Mid/Senior+) at Capital | Warsaw, Poland

At Samba TV, we redefine the global viewing experience through our innovative data and technology that tracks streaming and broadcast video worldwide. Join us on our mission to revolutionize how audiences connect with media, enhancing the engagement between viewers and advertisers through actionable insights derived from our vast data pools.We invite a passionate Full Stack Software Engineer to join our dynamic core team in Warsaw, Poland. In this pivotal role, you will be responsible for developing and refining our core systems, including those being re-engineered to leverage cutting-edge Large Language Models (LLMs). You will work on intricate, large-scale systems that analyze audio and data signals from hundreds of channels globally and various streaming platforms, enabling effortless extraction of valuable insights.

At Samba TV, we are pioneers in tracking streaming and broadcast video globally through our innovative data and technology solutions. Our mission is to revolutionize the viewing experience for everyone. Our proprietary data empowers media companies to connect with audiences for new shows and movies, while providing advertisers with the tools to engage viewers and measure their reach across all devices. Join us as we share a compelling narrative shaped by a global footprint of data and AI-driven insights.We are currently looking for a talented Data Engineer to enhance our data platform team. This team is responsible for developing and maintaining the data infrastructure that supports our organization’s operations. Your work will span from data ingestion to analytics and reporting, managing valuable viewership and contextual datasets, and creating scalable applications that facilitate data-driven decision-making. While our organization operates in a hybrid model, you will primarily work with technologies including AWS, Databricks, BigQuery, and Snowflake. The ideal candidate will possess significant experience in cloud-based data engineering, distributed data processing, as well as data governance and metadata management to support analytics, reporting, and machine learning initiatives.

At Samba TV, we are redefining the viewing experience by harnessing the power of our proprietary data and cutting-edge technology to track streaming and broadcast video globally. Our mission is to empower media companies to connect with audiences and advertisers to engage viewers, delivering insights that transform how we experience entertainment.We invite a talented Data Engineer to join our dynamic Data Technology team in Warsaw. You will play a crucial role in building and maintaining our data platform that serves the entire organization — supporting everything from data ingestion and analytics to comprehensive reporting. You will work with cutting-edge technologies like AWS, Databricks, BigQuery, and Snowflake to enhance our data infrastructure.As a self-sufficient contributor, you will take ownership of well-defined pipeline components and features, collaborate effectively with your teammates and cross-functional stakeholders, and navigate the complete data lifecycle. We are looking for candidates with 2–4 years of hands-on experience who are proficient in writing production-quality code and are eager to grow their technical expertise.

At Samba TV, we are at the forefront of transforming the viewing experience worldwide through our innovative data and technology solutions. Our mission is to empower media companies by providing them with the insights they need to connect effectively with audiences while offering advertisers the tools to engage viewers across multiple devices. With our unique global footprint and AI-driven insights, we have a compelling story to tell about culture and media consumption.In the role of Data Engineer, you will lead the development of high-performance, scalable data pipelines and infrastructure that underpin Samba TV's analytics and insights. Your expertise will be essential in designing and implementing architectural enhancements, adhering to best practices, and mentoring a talented team of engineers. You will collaborate closely with teams in Data Science, Analytics, and Product to deliver robust, production-ready data solutions that drive significant business impact.

Samba TV leverages cutting-edge data and technology to monitor streaming and broadcast video globally. Our mission is to revolutionize the viewing experience for audiences everywhere. With our data-driven insights, media companies can effectively connect with viewers for new shows and movies, while advertisers can interact with audiences and measure their reach across various devices. We boast a compelling narrative and a unique cultural perspective shaped by our extensive global data footprint and AI-enhanced insights.We are on the lookout for a skilled Data Analyst to join our Internal Measurement department. This role is pivotal in enhancing internal reporting processes, ultimately driving operational excellence throughout our organization. The team focuses on critical initiatives such as data quality, cloud expenditure management, and optimization through FinOps, while also delivering key product and business metrics to stakeholders.

At Samba TV, we are at the forefront of transforming the global viewing experience through our innovative data and technology. Our mission is to enhance how audiences connect with their favorite shows and movies, and empower advertisers to effectively engage viewers across devices. With a wealth of data and AI-driven insights, we offer a unique perspective on culture, shaped by our global reach.We invite you to be part of our Technology Operations team as a Data Engineer. This pivotal team is responsible for the operational delivery of Samba TV’s measurement and data licensing products, which serve as the primary revenue drivers for our organization. In this role, you will design, develop, and maintain robust data pipelines, automation workflows, and infrastructure that guarantee timely delivery of customized data solutions to our clients. You will also work on building and maintaining intelligent AI-driven workflows aimed at automating repetitive tasks, improving data validation processes, and ensuring smooth end-to-end delivery. Your hands-on experience with production systems will be crucial as you debug complex issues across distributed environments and collaborate with various teams to enhance operational efficiency through engineering and automation.

At Samba TV, we revolutionize the way audiences engage with streaming and broadcast content worldwide through our cutting-edge data and technology. Our mission is to transform the viewing experience for everyone, empowering media companies to connect with their audiences for new shows and movies, while enabling advertisers to effectively engage viewers and measure their outreach across devices. With a unique perspective shaped by our extensive global footprint of data and AI-driven insights, we are at the forefront of media innovation.We are on the lookout for a skilled Lead FinOps Engineer to join our Internal Measurement team. In this pivotal role, you will spearhead the establishment and leadership of a formal FinOps practice, focusing on designing, building, and implementing a robust cloud cost management framework that encompasses cost optimization, attribution, forecasting, and governance.As a key player in our team, you will have a direct impact on our bottom line by managing costs associated with our extensive cloud infrastructure across AWS and GCP. You will be responsible for attributing these costs to specific products and business initiatives. This financial visibility is essential for empowering our engineering and product teams to innovate in a sustainable and efficient manner. This is your opportunity to influence Samba TV's cloud strategy and foster a culture of cost-consciousness throughout the organization.

Samba TV is a leading innovator in the streaming and broadcast video landscape, leveraging our proprietary data and advanced technology. Our mission is to revolutionize the viewing experience worldwide. By harnessing our extensive data, media companies can effectively connect with audiences for new shows and movies, while advertisers can engage viewers and accurately measure reach across diverse devices. Our unique narrative and insights, driven by global data and AI, offer an unparalleled perspective on culture.As a mid-level Data Scientist on the Knowledge Graph & Identity team at Samba TV in Warsaw, you will take ownership of significant data science projects, delivering solutions with minimal oversight. You are a dependable and autonomous contributor, possessing deep expertise in one of Samba's core areas—knowledge graphs, identity spine, measurement, or audience modeling—and the technical skills necessary to develop production-ready solutions utilizing modern machine learning and AI techniques. Collaborating closely with peers, product teams, and engineering, you will also play a vital role in mentoring junior data scientists within the team.

At Samba TV, we are redefining the way viewers engage with content. Our innovative technology and robust data analytics empower media companies to connect with their audiences effectively, and advertisers to track and measure viewer interactions seamlessly across multiple devices. By harnessing a wealth of insights driven by AI and a global dataset, we aim to transform the viewing experience for everyone.As a Mid-Level Data Scientist joining our Knowledge Graph & Identity team in Warsaw, you will take charge of the complete execution of critical data science initiatives with minimal supervision. Your expertise in one of Samba's core areas—be it knowledge graphs, identity management, audience measurement, or modeling—will be crucial. You will utilize modern machine learning and AI techniques to develop production-ready solutions. Collaboration with peers, product managers, and engineering teams will be key, alongside mentoring junior data scientists to foster growth within the team.

Samba TV is at the forefront of transforming the global viewing experience through innovative data and technology. Our proprietary solutions enable media companies to effectively reach and connect with audiences for new shows and movies, while allowing advertisers to engage viewers and gauge their reach across all devices. With a rich narrative shaped by our global data footprint and AI-driven insights, we are committed to enhancing entertainment for everyone.As the Data Science Manager at our vibrant Warsaw office, you will lead and nurture a talented team of 4–6 data scientists dedicated to developing Samba's knowledge graph and identity solutions—essential tools that drive our measurement and audience intelligence products. Your role will involve translating complex business challenges into actionable technical roadmaps, overseeing the entire project lifecycle, and fostering a high-performance culture characterized by experimentation, collaboration, and continuous growth. Your primary focus will be on your team: recruiting exceptional talent, establishing clear objectives, and creating an environment that empowers them to excel. Your robust background in data science will allow you to engage deeply in technical scoping, solution design, and code evaluations, and to contribute hands-on when necessary.This position reports directly to the VP of Data Science.

At CreatorIQ, we are revolutionizing the way brands engage with creators, trusted by over 1,300 global brands and agencies. Our mission is to humanize businesses and amplify human impact. We embody our core values: intentionality, excellence, collaboration, and kindness.Recognized as one of the best companies to work for by BuiltIn LA and NY, we have also been named a Fastest-Growing Company in North America by Deloitte Technology Fast 500™ for four consecutive years. Our accolades include being recognized as a leader in IDC MarketScape: Worldwide Influencer Marketing Platforms for Large Enterprises in 2025, and achieving high ratings from G2 and Influencer MarketingHub.Join us in our flexible work environment that promotes both in-person and remote collaboration, fostering innovation and accommodating diverse work styles.Position OverviewWe are on the lookout for a Senior Full Stack Developer to contribute to our exciting new project, Gifting. This innovative solution allows brands to send products to creators seamlessly, manage fulfillment, and track outcomes, propelling the future of creator commerce.In this high-impact role, you will work across the entire technology stack to design and build scalable systems from scratch. Collaborating closely with product and design teams, you will define the architecture, deliver quickly, and enhance a completely new user experience.Technical StackFrontend: React, TypeScript, JoyUI/MUIBackend: Python (Django), Node.js (TypeScript)Infrastructure: AWS (Lambda, EC2)Key Responsibilities:Lead end-to-end feature development across both frontend and backend (equal contribution)Contribute to the architecture and design of our greenfield product, influencing technical direction from the outsetCreate scalable APIs and services leveraging Django and Node.jsDevelop user-friendly, high-performance interfaces with React and modern component libraries

Join the dynamic team at altersolutions as a Full-Stack Developer. In this role, you will be responsible for designing and implementing robust web applications. You will work closely with cross-functional teams to create streamlined solutions and ensure optimal user experience.

Join Complexio, where we are revolutionizing enterprise AI by developing an intelligence layer that automatically connects and enhances understanding of an organization’s personnel, processes, and systems. Our innovative platform processes both structured and unstructured data to create a dynamic Event Knowledge Graph, orchestrating a variety of AI models to discover hidden workflow enhancements and facilitate autonomous actions.As a Senior Full Stack Engineer, you will be at the forefront of shaping the user experience for thousands of enterprise users. Collaborating with a talented team of software engineers, data scientists, product specialists, and business analysts, you will help design next-generation web applications that bring our state-of-the-art automation capabilities to life. Your contributions will be vital in transforming complex data insights into user-friendly, efficient, and scalable interfaces, connecting advanced AI infrastructure with tangible business results.If you have a passion for integrating sophisticated front-end engineering, full-stack product development, and cutting-edge enterprise AI solutions, and thrive in a fast-paced, highly technical environment, we invite you to apply!

Role Overview Samba TV is hiring a Product Manager for its TV platforms in Warsaw. This role shapes the product vision, sets strategy, and builds the roadmap for our TV offerings. The position works closely with teams across the company to improve user experience and support business growth. What You Will Do Define and communicate the vision and strategy for Samba TV's TV platforms Develop and maintain the product roadmap Work with engineering, design, and other teams to deliver product improvements Use insights and data to guide product direction Help keep Samba TV's platforms aligned with current technology trends

Join Our Team!We are on the lookout for a highly skilled Senior Full Stack Software Engineer to be a pivotal part of our innovative teams in Warsaw. At Bolt, our engineering teams tackle unique product challenges that involve sophisticated algorithms for demand forecasting, real-time pricing optimization, routing logistics, fraud detection, and distributed systems, among others.About UsWith a customer base exceeding 200 million across more than 50 countries, Bolt stands as one of the fastest-growing tech firms in Europe and Africa. This remarkable growth is a testament to the dedication and talent of our team members.We foster an inclusive culture where every individual is valued, regardless of race, color, religion, gender identity, sexual orientation, national origin, age, or disability. Our ultimate aim is to create urban environments that prioritize people over vehicles, and we would love for you to help us realize this vision!

Waymo, the leader in autonomous driving technology, is dedicated to becoming the world's most trusted driver. Originating from the Google Self-Driving Car Project in 2009, our focus has been on developing the Waymo Driver—The World’s Most Experienced Driver™. Our mission is to enhance mobility access and significantly reduce traffic-related fatalities. The Waymo Driver currently powers our fully autonomous ride-hail service, having successfully completed over ten million rider-only trips, utilizing its extensive experience from more than 100 million miles driven on public roads and tens of billions of miles in simulation across 15+ states in the U.S.Are you ready to shape the future of transportation with cutting-edge infrastructure for driverless cars?Join our Waymo Simulation team and contribute to the development of groundbreaking systems that will enhance our core simulation capabilities. We are searching for a dedicated Senior Software Engineer who is passionate about creating impactful solutions.

Join Universe Group, the innovators behind an ambitious AI-first web product in the visual content generation and editing space. As we transition into a phase of rapid scaling, we are on the lookout for a talented Full-Stack Developer to tackle architectural challenges and implement cutting-edge technologies into our product.Your future team includes: CEO, Full Stack Developer, Product Designer, PPC Specialist, Growth Product Manager, Product Manager, Data Analyst.Technology stack you will work with: React.js, Node.js, Nest.js, TypeScript, Redux, PostgreSQL, MongoDB, Redis, AWS, Kubernetes.Why you should join us:Collaborate closely with Ruslan — an experienced CEO with a proven track record. His previous startup, Eventmate, quadrupled its revenue within a year, secured $150K in investments (including from Google), and expanded into international markets including Europe and Brazil.Impact on business development — As a core team member, you will play an essential role in shaping the product while delving into architectural solutions and integrating the latest technologies into a product built from the ground up.A team of like-minded professionals — You will work alongside motivated individuals who support one another. We closely collaborate with technical teams across other businesses within the Universe Group, sharing insights and expertise.Opportunities for professional and career growth. We believe that the success of our business depends on the motivation and potential of each team member, so we continually invest in learning and development. You will also have the chance to advance to the Tech Lead position and contribute to team expansion and mentorship of junior specialists.Your future tasks will include:Defining and developing the product architecture, including technology selection, project structuring, and building scalable infrastructure to support a large number of users.Developing and maintaining...

Join Saily, where we simplify connectivity for travelers by eliminating roaming fees and plastic SIM cards, providing secure mobile data at over 200 destinations. With millions of paying customers and countless travelers accessing our services, your contributions will truly matter.We embrace an AI-native Product Engineering culture, where:The Engineer is a builder, tackling customer challenges from concept to implementation.AI Agents assist in coding and automating repetitive tasks, enabling Engineers to focus on impactful work.Everyone is encouraged to identify improvement opportunities and implement solutions.Curiosity and knowledge sharing are core to our team dynamics.Our ultimate goal is to ensure a comfortable and hassle-free journey for our customers.At Saily, we prioritize growth over comfort, contribution over hierarchy, and impact over process. We empower talented individuals with context, autonomy, and AI to enhance their productivity.We are excited to welcome motivated junior engineers to our team. Here, your impact is defined not by years of experience, but by your passion for learning, discipline, and innovative thinking. You'll have the opportunity to shape your environment, and Saily will provide the platform for you to do just that.Expect hands-on experience with AI-driven software development, full access to learning resources tailored to your growth, and the chance to work on a successful and technically challenging product that you will be proud to build.Bring your skills and vision, and become part of the Saily journey!

About Saily Saily, part of nordsec, helps travelers stay connected without roaming fees or physical SIM cards. Our platform delivers fast, secure mobile data in more than 200 destinations. With millions of paying users and hundreds of thousands online at any moment, we focus on making travel easier and more enjoyable. Our Product Engineering Culture Engineers own the entire product lifecycle, from initial concept through deployment. AI tools support coding and automate repetitive work, so engineers can focus on meaningful problems. Team members regularly suggest, discuss, and implement improvements together. We value curiosity, ongoing learning, and sharing knowledge across the team. Our main goal is to keep the travel experience smooth and stress-free for our users. We put growth ahead of comfort, impact above process, and contribution before hierarchy. Saily provides context, autonomy, and AI-driven tools to help people do their best work. About the Internship This is a 3-month, full-time paid internship based in Warsaw. Trainee Engineers work with experienced team members from day one, tackling real product challenges and building practical skills. Guidance is available, but interns are encouraged to take ownership and grow into their responsibilities. We use AI as a standard part of our workflow and emphasize strong engineering habits from the start. Outstanding interns may receive an offer for a full-time position at the end of the program. Who We’re Looking For Clear thinkers who learn quickly and take responsibility for their work Curious, self-disciplined individuals ready to contribute in a collaborative setting People eager for hands-on experience with real products, not just theoretical tasks If this sounds like the right fit, apply now to join the Saily team in Warsaw.