Senior Software Engineer

🏢 Summary: Develop and evolve high-performance Java microservices for online financial products in a Scrum team. The role focuses on scalable, highly available systems that process large data volumes with minimal latency, with opportunities to influence technical solutions and product development. 🗂️ Requirements: Strong experience building Java microservices, Microservice design, implementation and evolution, Understanding of scalability and performance, Ability to translate business analysis into technical solutions, Delivery to requirements and deadlines, Clean, testable code and engineering best practices, Ownership, proactive risk identification and solution proposals, Effective collaboration in an experienced technical team 📃 Skills: Java, Micronaut, Kubernetes, Rancher, gRPC, Protobuf, Kafka, Pulsar, RabbitMQ, Chronicle, PostgreSQL, MongoDB, Redis, Prometheus, Grafana, OpenSearch, Opsgenie, OpenTelemetry, JUnit, Testcontainers, IntelliJ, Copilot, Windsurf, Claude, GitLab, Jira, Confluence, Gmail, Drive, Docs, Meet, Chat 🏢 Description: XTB is a global company from the financial industry, focusing on online trading of financial instruments. We are the largest FinTech in Poland and a leader in Central and Eastern Europe, and the range of our operations covers several countries, including Asia and South America. At XTB, we focus on the development of our employees, giving them opportunities to gain knowledge and skills in various fields, as well as offering a number of training and development programs. If you are looking for challenges and want to gain valuable experience in an international business environment, XTB is the right place for you. We are a certified Great Place to Work company. Responsibilities Working in a Scrum environment, with a strong focus on effective team collaboration. Development of multiple products, offering the opportunity to build a wide range of functionalities. High-performance systems - we process massive volumes of data with minimal latency. A strong emphasis on high availability and scalability, supporting investments made by users all over the world. Technologies Our microservices are primarily developed in Java 17+ using Micronaut. Deployed on Rancher (Kubernetes) across multiple data centers. Inter-service communication via gRPC and Protobuf. Asynchronous communication using Kafka, Pulsar, RabbitMQ, and Chronicle. Data storage in PostgreSQL, MongoDB, and Redis. Production monitoring with Prometheus, Grafana, OpenSearch, Opsgenie and Open Telemetry. Testing with JUnit and Testcontainers. Development in IntelliJ IDEA with GitHub Copilot, Windsurf and Claude Code support. Source code hosted on GitLab, with builds managed via GitLab CI. Task tracking in Jira and documentation in Confluence. Extensive use of Google Workspace: Gmail, Drive, Docs, Meet, and Chat. Internally developed GenAI tools available to all employees. Requirements Strong Experience in building Java-based microservices - hands-on expertise in designing, implementing, and evolving microservices, with an understanding of scalability and performance challenges. Ability to deliver according to requirements - translating business analysis into concrete technical solutions while ensuring compliance with requirements and deadlines. Ownership and proactivity - taking responsibility for assigned tasks, identifying risks, and proposing solutions to ensure successful project delivery. Commitment to code quality - adhering to the highest engineering standards, focusing on clean, testable code and alignment with best practices and system architecture. Active contribution to project development - engaging in continuous improvement and optimization, proposing innovative solutions, and collaborating closely with the team toward shared goals. Experience in effective communication and collaboration with an experienced team - you are comfortable working with professionals with strong expertise, building productive working relationships, and aligning on goals and decisions within a mature team environment. What we offer Real influence on the development of the company and the product. Work in an experienced team that is happy to share its knowledge. A clear vision of development thanks to regular feedback and clear career paths. Regular team-building meetings. Benefits A training budget for courses and conferences that interest you. An extra day off on your birthday. An extra day off for parents. Equipment tailored to your needs. Private medical care and group insurance. Access to an e-learning platform for learning English and a benefits platform. Access to a wellbeing platform and the opportunity to take advantage of workshops and private therapy sessions. Remote work, from the office in Warsaw or from a coworking space in your city.

🏢 Summary: B2B full-stack engineering role for a remote AI-powered SaaS platform serving video and digital-content professionals. The position owns end-to-end delivery of new React.js and Node.js features, from concept through deployment, while contributing to engineering practices and mentoring teammates. 🗂️ Requirements: 5+ years of Full Stack Engineering experience, React.js proficiency, Node.js proficiency, Independent end-to-end solution delivery, Modern web technologies and full-stack architecture knowledge, Full SDLC experience, including deployment and maintenance, CI/CD and version-control experience, Mentoring experience, Cross-functional communication skills, English at B2 level or higher 📃 Skills: React.js, Node.js, ReactQuery, Tailwind, Fal, AWS, MongoDB, CI/CD 🏢 Description: Employer: US video production company Location: Remotely from Poland Salary:  24 050 - 38 850 PLN on B2B Cooperation model: B2B Start date: ASAP Recruitment process: 3 online steps (Async Loom Screen, Behavior with SVP, Live Case Study) Technology stack: React.js/Query, Tailwind, Node.js, Fal (most image models), AWS, MongoDB Join an innovative product company building an AI-powered platform that supports professionals in the video and digital content industry. The solution focuses on simplifying and accelerating the journey from idea to production, helping teams collaborate, plan, and execute creative projects more effectively. The product leverages advanced AI models (image, text, and video) and combines them into intelligent workflows designed for real-world collaboration. Instead of focusing only on content generation, the platform addresses key challenges in planning, coordination, and execution. We are looking for someone who enjoys ownership, moves fast, and wants to have a real impact on both product and engineering practices. Your role is: Design, develop, and deploy full-stack features for an AI-driven SaaS platform; Work closely with product stakeholders to define solutions and deliver measurable business impact; Take ownership of the full development lifecycle — from idea to production; Build and iterate on new product features (0→1 development); Ensure high quality by owning testing, validation, and release of your solutions; Contribute to improving development processes, increasing delivery speed, and reducing friction; Mentor other engineers and share best practices across the team; Collaborate in a fast-moving environment focused on experimentation and continuous improvement. Your skills and experiences: 5+ years of experience as a Full Stack Engineer; Proficiency with React.js and Node.js; Proven track record of delivering end-to-end solutions independently; Experience working in product-oriented environments with a strong focus on delivery and impact; Solid understanding of modern web technologies and full-stack architecture; Ability to work across the entire SDLC — from development to deployment and maintenance; Experience with CI/CD, version control systems, and modern development workflows; Strong ownership mindset and ability to take responsibility for delivered solutions; Experience mentoring others and contributing to team growth; Strong communication skills and ability to work in cross-functional teams; English proficiency at B2 level or higher. Nice to have: Experience working with AI/ML-based products or integrating external model APIs; Familiarity with building or scaling early-stage (0→1) products; Background in industries related to media, video, or digital content; Experience with prompt engineering or chaining AI models; Knowledge of DevOps or Product Operations practices; Proven ability to improve team delivery speed and efficiency; Interest in product thinking and experimentation; Basic design sense or experience working closely with UI/UX. Our client offers: Great opportunity for personal development in a stable and friendly large multinational company; Career growth and additional education.