Senior Java Fullstack Developer at Alter Solutions | Warsaw

Join our dynamic team at Alter Solutions as a Senior Java Fullstack Developer, where you will leverage your expertise in Java and full-stack development to create innovative solutions. You will work collaboratively within a talented team, contributing to both frontend and backend development, and enhancing our software architecture.

Join our dynamic team at Talan as a Senior Full Stack Developer! In this role, you will leverage your expertise in both front-end and back-end technologies to create innovative solutions for our clients. You will collaborate with cross-functional teams to design, develop, and deploy applications that meet business requirements and enhance user experiences.Your proactive approach and commitment to quality will be essential as you tackle complex challenges in a fast-paced environment. If you are passionate about technology and eager to make a significant impact, we want to hear from you!

As a Business Development Manager at inetum2, your primary objective will be to connect our innovative digital technology solutions, particularly in data and AI, with the strategic business goals of our clients. We are seeking a motivated, passionate, and experienced professional in international sales to join our team.Your key responsibilities will include:Promoting and selling our IT services to international markets, with a focus on the UK, DACH, and Nordic regions.Enhancing the company's sales capacity abroad by acquiring new customers and fostering collaboration with business partners.Conducting thorough analyses of customer and market needs to identify requirements and develop innovative sales strategies.Preparing and delivering compelling value propositions and commercial offers.Negotiating agreements and contracts for IT services.Formulating and executing effective sales strategies.Generating leads and successfully converting potential clients from our Marketing and Lead Generation Team into long-term customers.Establishing and nurturing long-term partnerships with clients and business partners.

About the Role margo-group is looking for an Agentforce Developer to join a team in Warsaw. The company works at the intersection of commerce media and technology, building AI-driven solutions that connect shoppers with brands across the open internet. Company Culture The organization values diverse perspectives, ongoing innovation, and inclusivity. Although it has grown from start-up roots to a global presence, the company maintains an entrepreneurial approach and encourages team members to help shape the future of digital commerce.

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

Location: Poland About Us: RTB House stands at the forefront of marketing technology, delivering cutting-edge solutions to leading brands and agencies around the globe. Our proprietary ad-buying engine is the world's first to utilize Deep Learning algorithms exclusively, empowering advertisers to achieve remarkable results at every stage of their marketing funnel. We are on the lookout for a Backend Python Developer to become an integral part of our internal team at RTB House. In this role, you will engage in the development of applications and tools that directly enhance our real-time bidding operations. Collaborating with seasoned engineers and product teams, this position offers a fantastic opportunity for developers eager to expand their skill set, tackle real-world challenges, and create robust software that makes a tangible impact.

Join our dynamic team at Netcompany as a Junior Java Developer, where you'll have the opportunity to work on innovative banking solutions. In this role, you'll collaborate with experienced developers to design, implement, and support cutting-edge applications that empower our clients to achieve their financial goals. Your contributions will directly impact our projects, making you an integral part of our success in delivering outstanding banking services.

Join our dynamic team at Netcompany as a Junior .NET Developer, where you'll be part of a vibrant working environment focused on innovation and collaboration. In this role, you'll contribute to the development of cutting-edge banking solutions, enhancing user experiences through efficient and scalable applications.

Join SKELAR, a pioneering Ukrainian venture builder committed to crafting international tech businesses. Working alongside our co-founders, we assemble talented teams aimed at achieving victory in global markets.Currently, SKELAR boasts a diverse portfolio of businesses across various sectors such as EdTech and marketplaces. Our startups are consistently recognized among Ukraine's top startups and product companies, achieving high rankings in the PlayStore and developing platforms utilized by millions. Our businesses have been featured in renowned media outlets like TechCrunch and Wired.We take pride in a robust team of over 1,000 experts with exceptional expertise and ambitious goals. Our people are our most valuable asset, and we strive to build businesses with the finest talents available in the market.We are currently seeking a Strong Middle/Senior Android Developer.PawChamp is a mobile application and online platform designed for pet parents—dog owners—providing them with resources to train their pets and learn more about dog care through 24/7 expert chats, our AI companion Pawchie, and educational materials developed with canine professionals. We deliver personalized daily lessons covering all aspects of dog training from basic commands to behavioral problem-solving. Our strategic goal is to become a leader in the global online dog training market, catering to all needs of pet parents and their dogs beyond just training.Recognized as Product of the Day on Product Hunt in October 2025.PlayStore rating: 4.2Intro video about the product: Watch hereChallenges awaiting you:- Support and enhance existing functionality; - Implement new features while adhering to agreed architectural approaches; - Ensure product stability and high quality through Unit and Integration testing; - Collaborate closely with a cross-functional team: from discussing logic with the Product Owner to aligning contracts with Backend and refining UI/UX with designers; - Involve in task decomposition, estimation, and collaborative sprint planning; - Actively influence improvements in workflows, technology stack selection, and development approaches within the team;What we value:Must have:4+ years of experience in Android development...

Twisto, a Param Company, provides digital financial services throughout Central and Eastern Europe. The Twisto app offers tools for managing payments, including options for deferred or split purchases, shared expenses, invoice payments, and both virtual and physical cards. Twisto emphasizes clarity, convenience, and competitive exchange rates for transactions at home and abroad. As the company grows, it continues to broaden its product range to support daily financial needs. Role overview The Senior Business Development Manager drives Twisto’s expansion by securing major business opportunities and building strategic partnerships. This role blends new business generation with relationship management and close collaboration across internal teams. Managing key accounts and supporting the company’s growth strategy are central to this position. What you will do Seek out and secure new high-value clients, with a focus on fintech, e-commerce, and in-store payment solutions. Develop and implement sales strategies to generate leads and establish long-term business relationships. Manage a portfolio of major clients, deliver strong service, and identify opportunities for upselling or cross-selling Twisto’s services. Represent Twisto at industry events, trade fairs, and conferences as both an exhibitor and presenter. Support marketing efforts to boost brand awareness and engagement. Collaborate with internal teams to review performance, propose new product ideas, and assist with lead generation. Contribute to shaping internal processes that enable business and company growth. Location This position is based in Warsaw, Mazowieckie, Poland.

Join our dynamic team as a Java Developer, where you will play a pivotal role in the design, implementation, and development of backend microservices that support post-sales processes related to account management. This project utilizes a microservices architecture that allows for flexible scaling and seamless integration with our existing ecosystem of systems.A key aspect of this role involves integrating with databases and external systems, including financial systems and CRM platforms, to ensure data consistency and automate business processes.

About Us:Planner 5D serves as a global nexus for home design, bringing together over 100 million users across 230 territories (including two users from Antarctica each month!). Our platform transforms the home renovation journey from concept to implementation, streamlining the process through our state-of-the-art software. You don't need to be a professional designer to enhance your living or workspace; we believe in making the customization of dream homes accessible to everyone.Our cross-platform services include Web, iOS, Android, Windows, and MacOS, ensuring seamless synchronization for our users. Planner 5D is not just software; it's a vibrant community of passionate professionals from diverse backgrounds, collaborating across time zones with a unified goal of revolutionizing the home design industry.We are continually seeking like-minded talent who are eager to take initiative and drive innovation within our expanding suite of tools. Join us in shaping the future of home design!We are on the lookout for a skilled Android Engineer to develop next-generation mobile experiences for millions of users. You will collaborate with AI-driven 3D design tools, enhance performance, and test new features to push the boundaries of possibility. If you appreciate clean and reliable code, thrive in a strong team environment, and are passionate about modern technologies, we invite you to join us in shaping the future of home design!

Join Our Team as a Product Engineer!Product Engineer (Warsaw – Hybrid)Velocity is revolutionizing the financial landscape with a groundbreaking approach: Stablecoins. Our mission is to provide an intelligent, rapid, and unified method for transferring funds. As payment and banking infrastructures lag behind the demands of today's global economy, we are at the forefront of change with our Stablecoin Payment Account, merging the agility of digital assets with the rigor of traditional finance.Based in London, Warsaw, and New York, our experienced team collaborates in a hybrid work model. We value the balance of flexibility and in-person teamwork. This position is based in our Warsaw office and operates under a B2B contract arrangement.Your Role and ResponsibilitiesAs a Product Engineer at Velocity, you will leverage AI to develop comprehensive products that seamlessly integrate with financial systems. You will collaborate closely with product managers and stakeholders, taking ownership of entire product flows from concept to production and beyond.Essential QualificationsStrong product ownership: You are adept at understanding product goals, engaging with product managers and stakeholders, and managing features from ideation through to deployment and monitoring. You excel at problem-solving.Hands-on AI-driven development: You utilize AI tools daily to enhance design, coding, debugging, and shipping processes. AI is integral to our product development methodology.Rapid execution: You will deliver your first significant pull request on your very first day. Your drive and ambition focus on delivering tangible value rather than getting mired in discussions.Collaborative spirit: As part of a small, flat team of product engineers, you work autonomously, support your teammates, and thrive in an ego-free collaborative atmosphere. You take accountability for your design choices.Robust backend engineering experience (3+ years): You are proficient in building and maintaining production systems using frameworks such as Node.js, Django, FastAPI, or Ruby on Rails. Familiarity with frontend frameworks like React is a plus, along with expertise in leveraging GitHub for team collaboration.API and system design proficiency: You possess the skills to create clean, scalable RESTful APIs and backend architectures that are both maintainable and efficient.

Saily, part of nordsec, helps travelers connect worldwide without roaming fees or plastic SIM cards. The service delivers fast, secure mobile data in more than 200 locations and supports millions of paying users, including hundreds of thousands of travelers at any given time. The team values an AI-native product engineering approach. Engineers at Saily take responsibility for the full product lifecycle, from early ideas through deployment. AI agents handle repetitive work, freeing engineers to focus on solving customer problems and building new features. How the team works Engineers design and deliver solutions to real customer challenges, owning projects from start to finish. AI tools automate routine tasks, letting the team work more effectively. Everyone can suggest and implement improvements to the platform. Continuous learning, curiosity, and sharing knowledge are core values. The main goal is to provide travelers with a smooth, reliable connection wherever they go. Culture and values Growth is valued over comfort. Contribution matters more than hierarchy. Impact takes priority over rigid processes. Team members receive the context, autonomy, and AI tools needed to excel.

Altersolutions is seeking a Senior Platform Engineer (Developer Experience) to lead the establishment and standardization of engineering practices, enhance developer workflows, and define standards for CI/CD and collaboration. This role melds hands-on DevOps expertise with a strong focus on clarity, comprehensive documentation, and effective process design.The primary objective is to boost the efficiency, consistency, and scalability of our engineering organization. In this capacity, you will collaborate closely with engineering leads, product managers, and other key stakeholders to ensure our operational methods are thoroughly documented, clear, and actionable.Key ResponsibilitiesDesign, document, and maintain comprehensive software development processes, encompassing coding standards, branching strategies, testing protocols, release management, and deployment workflows.Engage with engineering managers, team leads, and product teams to gather insights and best practices, facilitating the seamless adoption of tools and methodologies.Convert intricate technical workflows into clear, concise documentation and visual aids (such as flowcharts, process maps, checklists, and templates) to enhance understanding.Assess and implement tools aimed at improving developer experiences (e.g., feature flagging, local development environments, code quality tools).Oversee a central documentation repository (e.g., Confluence, Notion, or Git-based systems), ensuring that all documentation remains current and version-controlled.

Saily, part of Nord Security, is looking for a Senior Android Engineer with strong Kotlin skills to help shape and improve our mobile applications. This role centers on building new features and refining app performance for a better user experience. What you will do Design and implement features for Android applications using Kotlin Work closely with cross-functional teams to deliver high-quality solutions Troubleshoot and resolve technical issues as they arise Maintain high coding standards throughout the development process Requirements Extensive experience in Android development Proficiency with Kotlin Strong problem-solving skills and attention to detail Comfort working collaboratively with diverse teams This position is based in Warsaw and offers the chance to work on challenging projects in a collaborative setting.

We are seeking an experienced Senior Backend Engineer to become a vital member of our dynamic, cross-functional product teams. This role demands extensive technical expertise, exceptional communication abilities, and a proactive, collaborative approach. The successful candidate will be deeply involved in ongoing client projects and seamlessly integrated into our established workflows.

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.

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.

About Us:Planner 5D serves as a leading global platform for home design, engaging over 100 million users across 230 territories, including two users from Antarctica each month! Our innovative software streamlines the home renovation journey from ideation to execution, making it simpler than ever. You don't need to be a design expert to transform your living or working space. We are committed to enhancing the design experience and making the dream of customizing homes accessible to everyone.Our platform is available across various devices, including Web, iOS, Android, Windows, and MacOS, ensuring seamless synchronization for our users. Planner 5D is not merely software; it is a vibrant community of passionate and product-driven professionals from diverse backgrounds, collaborating across time zones with a common ambition to transform the home design industry.We are continuously on the lookout for talented individuals who are eager to take initiative and drive innovation within our expanding suite of tools. Join us in shaping the future of home design.We seek a skilled Senior Full-Stack Developer to join our web team, focusing on developing new features and enhancing our existing solutions.Our Tech Stack: PHP 8.4, Symfony, PHPUnit, MySQL, Redis, MongoDB, RabbitMQ, Git, Docker for back-end development. For front-end development: native JavaScript, jQuery (legacy code), TypeScript, React, Three.js (OpenGL), Webpack, WebSocket, Jest (unit tests), Docker, SVG.Note: Candidates should be prepared to work as a Contractor under a B2B service agreement.