Senior JavaScript Engineer at TechBiz Global | Warsaw, Poland

Join TechBiz Global, where we connect top talent with leading companies. We are currently in search of a Senior JavaScript Engineer to become a vital part of our client’s dynamic team in Warsaw. If you aspire to thrive in a cutting-edge environment and embrace growth, this opportunity is tailored for you.Role OverviewKey Responsibilities:Tackle essential problem domains crucial to our client’s objectives, with the flexibility to transition between teams as our fast-paced environment evolves.Leverage cloud solutions, especially AWS, to engineer, deploy, and enhance scalable services.Engage in the entire project lifecycle—from ideation and design to deployment and maintenance—ensuring timely and top-quality outcomes.Work collaboratively with diverse teams to synchronize integrations and enhance overall system architecture.Promote a robust engineering culture prioritizing code quality, best practices, innovation, and continuous improvement.Proactively identify, troubleshoot, and address potential challenges in distributed financial systems.Participate in small, autonomous teams with rapid release cycles, fostering a strong sense of ownership.Ideal Candidate:Demonstrates expertise in JavaScript, with substantial experience in backend development using Node.js (e.g., Express, NestJS, or similar frameworks).Possesses experience with PostgreSQL and has expertise in designing, architecting, and building reliable, scalable backend systems.Is proficient in working with cloud technologies, particularly AWS

Join Fairmarkit as a Senior Frontend Engineer and be a key player in revolutionizing the procurement process. You will design and implement user-centric web applications that elevate the user experience. Collaborate with cross-functional teams to create scalable and maintainable solutions while ensuring high performance and responsiveness.

About WPP Media WPP is the leading creative transformation company, leveraging the power of creativity to forge better futures for our employees, the planet, clients, and communities. Discover more at wpp.com. WPP Media is WPP’s global media collective, orchestrating the best platforms, talent, and partnerships to unlock endless opportunities for growth in an era where media pervades every aspect of life. Learn more at wppmedia.com. At WPP Media, we value our culture and our people, which empower us to deliver outstanding experiences for our clients and each other. In this role, you will embody WPP & WPP Media’s core values: Be Extraordinary by Leading Collectively to Inspire transformational Creativity. Create an Open environment by Balancing People and Client Experiences through Cultivating Trust. Lead Optimistically by Championing Growth and Development to Mobilize the Enterprise. Role Summary and Impact As a vital member of the Global Operations Centre (GOC), you will collaborate with teams across the U.S., Europe, and Asia to deliver impactful solutions in a vibrant, multicultural setting. We are looking for a talented and passionate Frontend Engineer to join our Data & Technology Solutions team. You will play a key role in designing intuitive, engaging, and high-performance user interfaces for our data products and AI platforms, including the innovative WPP Open platform. If you enjoy creating beautiful and functional web applications, excel in modern JavaScript frameworks, and are keen to turn complex data into user-friendly experiences within the dynamic AdTech landscape, we invite you to apply. You are: A skilled user experience craftsman with a sharp eye for detail and a dedication to constructing pixel-perfect, responsive, and accessible interfaces. Proficient in contemporary frontend technologies, capable of producing clean, modular, and maintainable code. Passionate about performance and consistently optimizing web applications for speed and efficiency.

Join HelloFresh in Warsaw as part of our HelloTech organization, a vital segment of our global technology team comprising over 1000 professionals. We are dedicated to developing digital products that enhance the end-to-end food experience, encompassing meal kits, ready-to-eat meals, and even specialty items like pet food and premium meat & seafood. Our technology platforms empower millions of customers with personalized food solutions every month.Our direct-to-consumer subscription model is fueled by cutting-edge technology that optimizes every customer interaction—from engaging applications and personalization algorithms to pricing strategies and supply chain management. Although our brands operate independently to cater to diverse customer needs, they are unified by shared platforms, data, and operational excellence crafted by HelloTech.At HelloTech, we work in autonomous, cross-functional teams that take ownership of specific products and domains. By collaborating with our Warsaw office, you will contribute to scalable, data-driven products used across various markets, leveraging a modern tech stack and working with international teams to continuously enhance how our customers discover, order, and enjoy HelloFresh products now and in the future.

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.

CoreWeave, the essential cloud for AI™, is built by pioneers for pioneers. We provide a robust platform of technology, tools, and teams that empower innovators to confidently build and scale AI solutions. Trusted by top AI labs, startups, and global enterprises, CoreWeave combines exceptional infrastructure performance with extensive technical expertise to accelerate innovation and transform computing capabilities. Since our establishment in 2017, we have become a publicly traded company (Nasdaq: CRWV) as of March 2025. Discover more at www.coreweave.com.We are proud to be recognized as a Living Wage accredited employer.

Join Euronet Worldwide, a leader in electronic payments and transaction processing, as a Financial Analyst. In this role, you will play a critical part in analyzing financial data, preparing reports, and supporting strategic decision-making processes. This is an exciting opportunity to contribute to the financial health of a dynamic and growing organization.

Join Hostinger as a Pricing Manager and play a pivotal role in shaping our pricing strategies. You will work alongside a dynamic team to analyze market data, set competitive prices, and enhance our revenue models. Your insights will drive our pricing decisions, ensuring we remain competitive while maximizing profitability.

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!

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.

WHAT IS BOXBox Inc. (NYSE:BOX) is at the forefront of Intelligent Content Management, revolutionizing how businesses manage their content and foster collaboration. Our innovative platform empowers organizations to secure critical content, streamline business workflows, and leverage enterprise AI to drive success in the AI-first era. Since our inception in 2005, we have simplified operations for leading global firms such as JLL, Morgan Stanley, and Nationwide, with our headquarters located in Redwood City, CA, and offices throughout the United States, Europe, and Asia.By becoming a part of Box, you will play a pivotal role in driving our platform's evolution. Content is the lifeblood of modern work, comprising the myriad files and information exchanged across teams and departments daily. Our mission is to infuse intelligence into content management, enabling our customers to transform their workflows entirely. With the integration of AI and enterprise content, the potential to reshape how organizations collaborate has never been more significant, and at Box, you'll be at the forefront of this transformation. WHY BOX NEEDS YOUAs Box continues to scale its AI capabilities and internal analytics, we are looking for experts to harness these tools to drive smarter business decisions.You will be responsible for designing and deploying AI agents and operational solutions that bolster both IT and business workflows. These agents will be crafted to minimize inaccuracies while prioritizing security in their modeling, data processing, and decision-making. Additionally, you will build and maintain MCP servers and developer tools that yield actionable data insights, facilitating prompt actions for teams. Ultimately, your contributions will link secure, reliable infrastructure with practical AI capabilities, enhancing informed and low-risk decision-making throughout the organization.WHAT YOU’LL DODesign, develop, and implement AI agents to automate and enhance IT and business workflows, ensuring reliable outputs.Establish model validation, monitoring, and fail-safe systems to identify and mitigate incorrect or risky agent behaviors.Architect secure data handling pipelines for data ingestion, storage, access control, and encryption to protect sensitive information.

SoftwareMind is looking for a Data Engineer based in Warsaw. This role centers on designing, building, and maintaining data pipelines that help drive informed decisions throughout the company. Key responsibilities Create and manage data pipelines that integrate information from multiple sources Monitor and support data quality and reliability at every stage Collaborate with team members to deliver solutions aligned with business needs Requirements Strong grasp of data engineering principles Comfort working closely with others in a collaborative setting Interest in building systems that support data-driven decisions

Engage in continuous collaboration with Business Analysts throughout all phases of implementation projects (Design, Build, Test, Hyper Care) utilizing the SCRUM framework.Configure the Ivalua Buyer application based on the specifications provided by Business Analysts.Prepare and conduct Unit Tests to ensure application functionality.Perform System Integration and/or Regression Tests to validate system performance.Analyze and troubleshoot system bugs to ensure optimal performance.Assist the project team in creating project documentation as required by the Client.

Join a leading trading platform that is ambitiously extending its reach globally. Our award-winning products are recognized for their innovative technology and exceptional client experience. We pride ourselves on delivering excellence, and we seek extraordinary talent to enhance our dynamic team.We are in search of an accomplished Senior Technical Recruiter. This pivotal role focuses on sourcing top-tier engineering talent to align with Capital.com's strategic objectives for 2025 and beyond. As the Senior Technical Recruiter, you will manage the complete recruitment lifecycle, identify exceptional engineering candidates, and act as a strategic partner to stakeholders within the engineering department.

Discover the Opportunity at The Dot CollectiveAt The Dot Collective, we are a pioneering consultancy operating across the UK and EU, dedicated to engineering excellence and empowering individuals to create meaningful impacts.We embrace modern technology stacks and apply agile scrum methodologies to all our projects.Who You AreIf you have a passion for data and its transformative potential, and you're eager to make significant contributions in a short timeframe, we could be the perfect fit for you.

Company Overview:Twisto, a Param Company, is a forward-thinking financial services provider revolutionizing payment methods in Central and Eastern Europe. Our innovative app empowers users with complete control over their financial transactions, enabling them to defer or split purchases, share expenses, pay invoices, and shop using both virtual and physical cards. We are committed to providing transparency, convenience, and competitive exchange rates both locally and globally. Our mission is to continuously innovate and expand our offerings to simplify everyday financial tasks for our customers.Your Future Responsibilities:We are seeking a dedicated Python Engineer to join our dynamic team! In this role, you will collaborate with Engineering Managers, Product Analysts/Managers, and fellow engineers to enhance user stories, define requirements, and assist in prioritizing and executing tasks throughout the software development life cycle.Key Responsibilities:Design, develop, and maintain Python applications with an emphasis on writing clean, reliable, and maintainable code.Transform business requirements into viable technical solutions.Implement new features, conduct code reviews, provide technical support, and resolve bugs.Contribute to system architecture design and ensure that technical documentation remains current.Engage actively in code reviews and promote high engineering standards within the team.Effectively communicate with stakeholders and team members regarding technical solutions and project updates, both verbally and in writing.Our technology stack is constantly evolving, but currently includes the following tools: Languages: Python.Tools: Kubernetes, Terraform, Docker, AWS Cloud, Grafana, Firebase.Methodologies: Agile, Scrum; we operate on 14-day sprints, with stand-ups conducted online via Slack.

Join Box as a Senior Software Engineer!At Box, we are revolutionizing the way organizations manage content. As the leader in Intelligent Content Management, our platform empowers businesses to collaborate, streamline workflows, and secure vital content through the power of enterprise AI. With a global clientele that includes industry giants like JLL, Morgan Stanley, and Nationwide, we are dedicated to transforming the workplace experience for our customers.By becoming part of Box, you will play a crucial role in advancing our eCommerce platform, which is pivotal for enabling customers of all sizes to purchase and manage their Box subscriptions through self-service solutions. This initiative not only supports our expansion into new international markets but also enhances our pricing and discount mechanisms to drive business growth. Your contributions will directly impact a significant portion of Box's revenue, making reliability and performance critical to our success.Your Responsibilities:Design and develop high-quality, scalable, and responsive software using cutting-edge technologies.Write clean, maintainable code adhering to industry best practices.Collaborate effectively with cross-functional teams including Designers and Product Managers to deliver exceptional user experiences.

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.

Location: Warsaw, Poland Company: Veeam Software About Veeam Software Veeam leads in data management and AI trust, helping organizations understand, secure, and strengthen their data. Headquartered in Seattle with teams in over 30 countries, Veeam protects the operations of more than 550,000 clients worldwide. The company focuses on keeping businesses running smoothly and enabling the safe, rapid adoption of AI at scale. Role Overview The Senior Data Security and Privacy Engineer will focus on implementing privacy-by-design principles and building strong data protection strategies for the Veeam Data Cloud (VDC) data plane. This position plays a critical role in upholding high standards for data security and privacy, helping to maintain client trust in Veeam's solutions.