Java Software Engineer at capital | Warsaw, Poland

SKELAR is a pioneering Ukrainian venture builder dedicated to establishing international tech businesses. We collaborate with co-founders to assemble top-notch teams that excel in global markets.Currently, SKELAR operates a range of businesses across various niches, from EdTech to marketplaces. These companies consistently rank among the top startups and product firms in Ukraine, achieving high rankings in the App Store and creating platforms that millions use daily. Major media outlets like TechCrunch and Wired have featured SKELAR's businesses.We take pride in a robust team of over 1,000 specialists who possess remarkable expertise and ambitious goals. Our people are the most valuable asset of the company, and we strive to build businesses with the best talents available in the market.RiseGuide is an expert-driven microlearning mobile application designed around the principles and examples of exceptional role models. Our users are guided by insights from Andrew Huberman and Simon Sinek to break harmful habits, enhance their social media presence with strategies from Alex Hormozi and MrBeast, and develop charisma inspired by Robert Downey Jr. and Steve Jobs.Key Facts about RiseGuide:Achieved unit economics in just 6 weeks and have been actively scaling since (we had an incredible Q5 and grew fivefold last year).Over 200,000 paid users, with ratings of 4.6/5 on the App Store and 4.4/5 on TrustPilot.A team of over 60 individuals from successful tech businesses and top management programs worldwide.We aim to redefine the self-improvement industry, granting users access to expert knowledge on demand. To achieve this, we are seeking a Software Engineer (Golang) to help develop our product's backend and turn our ambitious goals into tangible achievements.What We Offer:Opportunity to make architectural decisions and build systems from the ground up.Minimal bureaucracy and maximum speed to market. A small team focused on results and rapid deployment.Fast feedback loops — your solutions will immediately impact production and influence hundreds of thousands of users.The chance to join the team early and define your area of responsibility.Pure Tech: modern stack with Zero Legacy.

SKELAR is a pioneering venture builder that specializes in developing international tech businesses. Together with co-founders, we assemble strong teams to excel in global markets. Currently, SKELAR manages a diverse portfolio of businesses across various industries, from EdTech to marketplaces, consistently ranking among the top startups and product companies in Ukraine. Our platforms are utilized by millions, achieving top rankings in the App Store.RiseGuide is our innovative EdTech product designed for self-improvement, inspired by the examples and principles of outstanding role models. Users can overcome bad habits with advice from Andrew Huberman and Simon Sinek, enhance cognitive skills through the methodologies of Barbara Oakley and Jim Kwik, and develop charisma inspired by the principles of Robert Downey Jr. and Steve Jobs. We aim to redefine the self-improvement industry and provide users with on-demand access to expert experiences.Key Facts about RiseGuide:— Achieved unit economics in just 6 weeks and have been scaling actively since; — Over 500,000 paying users, with a rating of 4.6/5 on the App Store and 4.4/5 on TrustPilot; — Ranked in the top 3 for revenue among launches in the Genesis ecosystem over the past two years; — Our team of over 80 comprises individuals from successful tech businesses and top management programs worldwide.We are currently seeking a Content Manager who shares our passion for self-improvement and is ready to take full ownership of content that directly influences product metrics.As a Content Manager, your responsibilities will include:— Creating educational materials for our application;— Localizing and adapting text and video content;— Writing in English and improving existing descriptions, posts, and materials;— Engaging with social media, updating our website;— Generating ideas and content initiatives that support the product strategy;— Providing operational support: analyzing user feedback, moderating in-app comments, etc.What we value:— Ability to create and analyze large volumes of content;— Proficiency in English (B2-C1);— Experience as an editor with English texts;— Familiarity with LMS and CMS platforms;— Experience working with writers, and collaboration with specialists from various domains to enhance product, reputation, and marketing.Preferred qualifications:— Research experience in content development.

Join Nordsec as a Senior Backend Engineer and be a part of our innovative team in Warsaw. We are seeking a talented engineer experienced in Golang to help us build robust backend systems that power our applications. You will work closely with cross-functional teams to design, implement, and optimize backend services that deliver exceptional user experiences.

About the TeamJoin the Sell Online Tribe, a dynamic group that empowers merchants to establish their presence online. We create innovative tools that enable millions of entrepreneurs, from barbers to bakers, to market their products and services effortlessly. Our core focus lies in the Online Store and Bookings products, which form the backbone of SumUp’s ecosystem, allowing merchants to manage appointments, highlight their offerings, and process payments—all from their mobile devices.We are a collaborative, cross-functional team of Product Managers, Designers, and Engineers dedicated to delivering exceptional mobile experiences. As a part of this team, you will play a crucial role in expanding into new sectors, bridging the gap between web and mobile, and making digital selling seamless for small businesses worldwide.About the RoleAs a Senior Backend Engineer, you will be instrumental in enhancing SumUp's major merchant-facing online products within the Bifrost team. You will contribute to the development and scaling of key products such as Payment Links, Virtual Terminal, and Unified Gift Cards, while also working on integration solutions that are vital for numerous other SumUp offerings.We are looking for a developer who prioritizes reliability, teamwork, and continuous growth. Your backend expertise will thrive in a high-impact environment where your contributions directly influence merchant success and team scalability.What You’ll DoEnsure scalability and continuous growth of high-priority online products at SumUpDrive the implementation, development, and integration of Online Checkouts across SumUpEngage actively in planning and review sessions at quarterly and sprint levels, providing constructive feedback and estimationsMonitor existing services, applying necessary fixes to maintain platform reliabilityDevelop new features with maintainable and testable codeEnhance application performance for scalabilityParticipate in code reviews to uphold high coding standardsYou Will Excel in This Role If:You have 5+ years of experience in backend engineering with GolangYou possess a robust understanding of fundamental system architecture, design principles, data modeling, and API designYou have substantial experience with distributed and fault-tolerant systemsYou have a passion for delivering high-quality software solutions

Join Skelar as a Payments Manager!At Skelar, a leading venture builder, we are on a mission to create innovative international product IT companies that excel in the world of venture investments. Together with co-founders, we assemble strong teams to launch product-driven IT businesses and succeed in global markets.About RiseGuide: Our EdTech platform is dedicated to self-improvement, drawing inspiration from renowned role models. Users can overcome detrimental habits through advice from experts like Andrew Huberman and Simon Sinek, enhance their social media presence with strategies from Alex Hormozi and MrBeast, and develop charisma inspired by principles from Robert Downey Jr. and Steve Jobs. We aim to redefine the self-improvement industry by granting users expert insights on demand.Key Achievements:Achieved unit economics in just 6 weeks and are actively scaling.Over 300,000 paid users, with an impressive 4.6/5 rating on the App Store and 4.4/5 on TrustPilot.Ranked in the top 3 for revenue among launches in the Genesis ecosystem over the past 2 years.A diverse team of over 70 professionals, hailing from BetterMe, Welltech, Jooble, and top management programs globally.We are currently seeking a Payments Manager to join our dynamic team.Key Responsibilities:Payment Optimization: Analyze and identify growth points for enhancing payment processing efficiency, conducting A/B testing for routing and monetization strategies.Risk and Tax Management: Analyze and improve key risk metrics such as VAMP rate (VISA), Fraud rate (Mastercard), and Dispute & Claim rates (PayPal); perform A/B tests to optimize tax burdens.Scalability of Payment Infrastructure: Maintain and develop relationships with current banking partners; implement new technical and commercial opportunities to enhance service quality and reduce costs.

About the Role nearmap is hiring a Software Engineer in Warsaw. This team focuses on developing solutions for aerial imagery, working together to solve technical challenges and improve products. What to Expect Contribute to projects that advance aerial imagery technology Work closely with colleagues in a collaborative setting Engage with complex problems and help build practical solutions Who We’re Looking For Experience in software engineering Comfort working as part of a team Interest in tackling technical challenges This position is based in Warsaw.

Join our dynamic API team as a Software Engineer, where you'll address the exciting challenges of delivering high-resolution aerial imagery and geolocation data at scale. Your responsibilities will encompass designing robust data pipelines and enhancing response times for intricate geospatial queries. In this role, you'll work closely with the Product team to transform ideas into reality, navigating various technology stacks to overcome complex technical obstacles. Whether you're scaling APIs, architecting innovative microservices, or refining developer integrations with our platform, your contributions will significantly influence how businesses leverage location intelligence to drive impactful decisions.

Join CreatorIQ, the leading operating system for creator-led growth, trusted by over 1,300 global brands and agencies. Our mission is to humanize businesses and empower individuals to make a significant impact. Our core values — being intentional, striving for excellence, embracing the journey together, and acting as good humans — guide us every day.Recognized as one of the best companies to work for by BuiltIn LA and NY, and featured on the Deloitte Technology Fast 500™ for four consecutive years, CreatorIQ has solidified its position as a leader in the influencer marketing space, as noted in the IDC MarketScape and The Forrester New Wave™. With a flexible work model that encourages collaboration and innovation, we adapt to the unique work styles of our team members.We are looking for passionate and innovative individuals to join our vibrant team and help us transform the industry!Your Role as a Software Engineer:As a Software Engineer, you will design, develop, and maintain scalable, high-performance software applications. Your strong technical skills and problem-solving abilities will enable you to collaborate effectively with cross-functional teams. You will take ownership of moderately complex tasks, contribute to system architecture discussions, and continuously enhance development practices while aligning with our business objectives.Key Responsibilities:Design, develop, test, and maintain software applications that fulfill both business and technical requirements.Write clean, efficient, and maintainable code, adhering to best practices and coding standards.Engage in code reviews, offering and accepting constructive feedback to maintain high-quality software.Develop and execute unit and integration tests to ensure system reliability.Debug and resolve software issues to guarantee system stability and performance.Contribute to discussions on software architecture, focusing on scalability, maintainability, and security.Leverage AI-powered tools to enhance coding efficiency, debugging, and performance analysis.

Join our dynamic team at Asana as a Junior Software Engineer, where you will play a pivotal role in shaping the future of work. We are seeking a candidate with foundational experience in software engineering. Whether your passion lies in web and desktop product development or mobile applications (Android), this position offers a remarkable pathway for professional growth, supported by our tailored boot camps and mentorship programs.Your contributions will be part of a world-class engineering team dedicated to developing innovative software solutions. We value creativity and forward-thinking, inviting you to tackle challenges and provide elegant solutions.This position is located in our Warsaw office with a hybrid work schedule. Standard in-office days are Monday, Tuesday, and Thursday, with the flexibility to work from home on Wednesdays. Working from home on Fridays may vary based on your specific role and team collaboration. If you proceed to the interview stage, your recruiter will provide detailed information regarding in-office expectations.Employees in Poland are employed under a contract of employment.

Join Complexio, where our innovative AI platform revolutionizes business processes by efficiently managing and comprehending extensive enterprise data—both structured and unstructured. Utilizing proprietary models, knowledge graphs, and orchestration layers, we streamline human-computer interactions and autonomously execute intricate workflows on a large scale.As a joint venture between Hafnia and Símbolo, alongside partners such as Marfin Management, C Transport Maritime, BW Epic Kosan, and Trans Sea Transport, Complexio is at the forefront of redefining enterprise productivity through context-aware, privacy-first automation.This project is dedicated to enhancing business operations through cutting-edge artificial intelligence and advanced technologies, enabling intelligent data handling and automated decision-making. Our solutions are built with modern, high-performance architectures to guarantee efficiency, security, and scalability.

Join SKELAR as a Social Media Producer! We are a venture builder focused on crafting international product IT companies under the principles of venture capital. Collaborating with co-founders, we assemble strong teams to launch innovative IT businesses and compete in global markets. About RiseGuide: An EdTech product dedicated to self-improvement, inspired by the principles and examples of outstanding role models. Our users overcome bad habits with advice from Andrew Huberman and Simon Sinek, enhance their social media skills with playbooks from Alex Hormozi and MrBeast, and develop charisma inspired by Robert Downey Jr. and Steve Jobs. We aim to redefine the self-improvement industry and provide users with on-demand access to expert insights.Key Achievements of RiseGuide:— Achieved unit economics in just 6 weeks and have been scaling ever since;— Over 500,000 paying users with ratings of 4.6/5 on the App Store and 4.4/5 on TrustPilot;— Ranked top-2 in revenue among launches at SKELAR in recent years;— A team of over 70 members, hailing from BetterMe, Welltech, Jooble, and leading management programs worldwide.Now, we are looking for a Social Media Producer Your Responsibilities:1. Develop and launch Social Media channels (YouTube, Instagram) as strategic media assets for the brand:— Create viral content that converts viewers into users and attracts collaboration from stars;— Experiment with hypotheses, formats, and themes: from educational shows to interviews with celebrities;— Build an efficient production workflow: from idea and script to final editing, with a focus on systematic and predictable outcomes.2. Brand expansion through collaboration with stars and experts:— Organize collaborations with top experts and influencers for joint content creation;— Promote courses featuring signed-up stars, transforming our social media into a powerful media asset;— Generate buzz around the brand that goes viral in the self-improvement niche.3. Ownership and development of the Social Media team:— Hire and manage a team (writers, motion designers, etc.);— Responsible for achieving business metrics (reach, subscribers, conversions) and efficient resource allocation.What We Value:— Proven experience in building and scaling SMM for mobile applications or media projects from scratch;— Understanding of social media algorithms (YouTube, Instagram, TikTok, Facebook);— Ability to identify growth opportunities, comprehend platform algorithms, and implement ROI-positive content initiatives;— Deep understanding of the video content creation cycle (YouTube, Reels), knowledge of retention metrics, CTR, and virality mechanics;— Entrepreneurial mindset: comfortable working in high-uncertainty conditions, creating structure in chaos.

At Veeam Software, we pride ourselves on being the experts in Data and AI Trust, dedicated to empowering organizations to fully understand, secure, and ensure the resilience of their data and AI systems. Recognized as the market leader in data resilience and security posture management, we are perfectly positioned to navigate the convergence of identity, data, security, and AI risk. With our headquarters in Seattle and a presence in over 30 countries, we protect the operations of more than 550,000 customers globally, who rely on us to keep their businesses running smoothly. Embark on this exciting journey with us as we continue to innovate, learn, and create significant impacts for some of the world’s largest brands.About the RoleJoin us as we lead the charge in Kubernetes Backup and Disaster Recovery. Our Veeam Kasten platform is specifically designed for Kubernetes data management, providing enterprise operations teams with a seamless, scalable, and secure solution for backup, restore, disaster recovery, and application mobility. With our commitment to continuous optimization and enhancement, we are integrating our tools with SaaS services and expanding support for virtual machines hosted in Kubernetes, ensuring that we meet the evolving needs of our customers.

Role overview Alarm.com is looking for a Software Engineer skilled in C# and .NET to join the team at the EBS Warsaw office. The group focuses on building technology that enhances security and automation for both residential and commercial settings. What you will do Develop and maintain software using C# and .NET frameworks Create and support solutions that enable security and automation features Participate in all phases of the software development lifecycle, from design and coding to testing and deployment Location This role is based onsite in Warsaw, Poland, at the EBS office.

Join our innovative team as a Senior Software Engineer focused on transforming business processes through cutting-edge artificial intelligence and advanced technologies. This project is dedicated to optimizing intelligent data handling and facilitating automated decision-making, utilizing modern, high-performance solutions that guarantee efficiency, security, and scalability.

Join Complexio, a pioneering joint venture at the forefront of AI innovation, dedicated to streamlining business processes through advanced automation. Our Foundational AI platform leverages comprehensive enterprise data—both structured and unstructured—to enhance productivity and drive intelligent decision-making.With a collaborative team of experts from diverse fields, we utilize proprietary models and knowledge graphs to optimize human-computer interactions and execute complex workflows autonomously at scale. Our mission is to redefine enterprise efficiency through context-aware, privacy-first automation.If you are passionate about harnessing AI and advanced technologies to transform business processes and are eager to contribute to a dynamic project, we invite you to apply!

Join Complexio, a pioneering company at the forefront of AI-driven business automation. Our Foundational AI platform revolutionizes enterprise productivity by efficiently managing both structured and unstructured data. Leveraging proprietary models, knowledge graphs, and orchestration layers, we empower organizations to enhance human-computer interactions and automate complex workflows seamlessly.As a joint venture established between Hafnia and Símbolo, and supported by esteemed partners including Marfin Management, C Transport Maritime, BW Epic Kosan, and Trans Sea Transport, Complexio is on a mission to redefine the landscape of business operations through privacy-first automation.Your role will focus on optimizing business processes using advanced AI technologies, facilitating intelligent data management, and enabling automated decision-making. Our solutions are designed for high performance, ensuring security and scalability in modern enterprises.

Box creates Intelligent Content Management solutions that support collaboration, content lifecycle management, and information security for organizations worldwide. Since its founding in 2005, Box has worked with companies such as JLL, Morgan Stanley, and Nationwide. Headquartered in Redwood City, California, Box also maintains offices across the United States, Europe, and Asia. Every day, Box manages millions of files and data exchanges, including contracts and HR documents. The company’s mission centers on bringing intelligence to content management, enabling customers to streamline business workflows. Engineers at Box play a key role in applying AI to real-world collaboration challenges. Role overview The Relay Experience team in Warsaw focuses on improving workflow automation for Box users. Relay automates routine tasks for many large enterprises, helping users save time and maintain consistency across processes. This team is seeking a Senior Software Engineer who will take ownership of major system components, contribute independently, and help refine the experience for millions of Relay users each day.

Join our client, a leading international technology company, as a Senior Software Engineer and play a pivotal role in enhancing a sophisticated platform that champions supply chain transparency and product provenance. This innovative solution employs cutting-edge technologies, including distributed ledger systems, artificial intelligence, and 3D data matching, to deliver secure and verifiable information about products from their origin to the end consumer. By collaborating with producers, manufacturers, distributors, and retailers, the company fosters trust, authenticity, and ethical standards throughout intricate global supply chains. Their advanced blockchain technology is currently tracking millions of products globally, showcasing a significant achievement in real-world industry applications.

Location: Poland About Us: RTB House is an innovative global leader in marketing technology, dedicated to developing cutting-edge solutions for esteemed brands and agencies around the globe. Our unique ad-buying engine, driven entirely by advanced Deep Learning algorithms, empowers advertisers to achieve remarkable results and meet their objectives across all stages of the marketing funnel. Since our inception in 2012, we have expanded our operations to over 90 markets while maintaining a steadfast commitment to first-party advertising and continuous innovation. RTB House provides comprehensive, Deep Learning-powered AdTech products and solutions designed to enhance conversion rates, drive customer acquisition, foster engagement, and stimulate long-term demand for a diverse clientele worldwide. Your Role: We are seeking a Senior Software Engineer to join our team in designing, developing, and fine-tuning high-performance backend systems that facilitate real-time bidding (RTB) and machine learning at scale. You will be instrumental in creating software that manages billions of daily transactions, ensuring adherence to stringent latency and reliability requirements within a distributed, low-latency environment.