Tech Lead FullStack Nodejs React

Tech Lead FullStack (Node.js, React) Hybrid in Warsaw (3 days/week onsite required) | Full-time | Employment contract up to $9,200/month Our client is a US-based technology company headquartered in New York City, delivering digital solutions and consulting services that transform businesses and drive measurable value. With offices across multiple countries, the company is now investing in a new engineering center in Warsaw, recognizing the strong technical culture and exceptional talent of Polish software professionals. Their integrated ecosystem combines: PaaS (Platform as a Service): an AI-native enterprise operations foundation built to optimize workflows and accelerate value creation. SaaS (Software as a Service): a cloud platform delivering unmatched performance, intelligence, and execution at scale. S&C (Solutions & Consulting Suite): modular technology playbooks designed to manage, grow, and optimize company performance. With over a decade of experience supporting high-growth and private equity-backed platforms, the company brings deep domain expertise and a proven ability to turn technology into a strategic advantage. Role Overview Technical Leadership: Guide the architecture and design of applications using React (frontend) and Node.js/NestJS (backend), leveraging GraphQL and REST APIs. Team Management & Mentorship: Mentor, grow, and manage a team of full-stack engineers; establish and enforce best practices for development and collaboration Project Execution: Take ownership of complex full-stack feature delivery, ensuring quality, security, and high performance within defined timelines. Architectural Excellence: Conduct code and architecture reviews to ensure clean, maintainable code, enforce standards, and design scalable systems optimized for performance and user experience. Innovation: Proactively introduce modern tools, frameworks, and methodologies to boost team efficiency and product quality. Collaboration: Partner closely with product managers, UX designers, and other stakeholders to define technical scope and delivery plans. Required Skills & Experience Technical Expertise 10 years of software development experience with a strong focus on full-stack JavaScript (5 years focus). Advanced proficiency in key modern JavaScript technologies: React.js with Hooks and Context API. Node.js , NestJS , and Express. Next.js for Server-Side Rendering (SSR) and dynamic routing. GraphQL APIs and tools like Apollo Server/Client. Strong knowledge of HTML5, CSS3, JavaScript/TypeScript. Experience with REST and GraphQL API design and integration. Solid understanding of software engineering principles, design patterns, microservices, and asynchronous design patterns. Working knowledge of cloud platforms (AWS/GCP), CI/CD pipelines, Docker, and DevOps practices. Leadership & Management Proven success leading agile software teams in fast-paced environments. 3 years in a technical leadership or managerial role. Ability to coach and develop engineers across various skill levels. Strong project management skills, including scope definition, estimation, and execution. Hands-on experience working within Agile/Scrum methodologies. Excellent stakeholder communication and status reporting abilities Dtabase interactions and caching strategies using SQL (PostgreSQL, MySQL) and What's Offered Employment contract (UoP) with monthly compensation up to $9,200 Opportunity to grow in a global fintech environment High-impact projects with cutting-edge technology Collaborative, open, and ambitious team culture Hybrid model – 3 days/week onsite in Warsaw city center