Senior Frontend Engineer - Team Lead

About Harbor LabFounded in 2020 in Greece, Harbor Lab is a fast-growing B2B maritime tech company on a mission to simplify and optimize port cost management. Our end-to-end, AI-powered SaaS platform transforms how Shipowners and Shipmanagers handle Disbursement Accounts (DAs), bringing automation, real-time data, control and transparency to one of the most complex and costly parts of global shipping.But we don’t stop there. Harbor Lab also powers a thriving Marketplace, connecting Principals with a global network of vetted Port Agents and Vendors.At Harbor Lab, people come first. Our culture is anchored in ambition, trustworthiness, genuine care, and agility—values we bring to every interaction with our customers and our team. We're proud to be consistently recognized as a Best Workplace (2021, 2022, 2023) and recently certified as a Great Place to Work (2024).If you're looking to make a global impact, grow alongside passionate peers, and shape the future of maritime innovation—we’d love to meet you.About The RoleWe are looking for a highly skilled Senior Frontend Engineer – Team Lead to drive technical excellence and lead a cross-functional team of backend and frontend engineers. You will play a dual role: building high-quality user-facing features and guiding engineers’ professional growth, while also serving as a frontend mentor for other teams across the company when needed.This role is a blend of hands-on engineering, architectural ownership, and leadership. You’ll ensure the team delivers scalable solutions with our stack — React, Redux (RTK, RTK-Query), TypeScript, Vite, Storybook, and a robust design system — while driving adoption of best practices, testing, and AI-assisted tools.What You Will Be DoingLead & Mentor Lead a cross-functional team of frontend and backend engineers to deliver impactful features. Support each team member’s growth through Personal Development Plans (PDPs), mentorship, and constructive feedback. Foster a collaborative, inclusive, and high-performance culture. Own the Architecture Define and evolve the frontend architecture and technical roadmap, ensuring our applications are scalable, maintainable, and performant. Engage in full-stack architectural discussions that connect the frontend with APIs, backend systems, and infrastructure considerations. Deliver High-Quality Software Build and maintain features using React, Redux, TypeScript, and Vite, following modern best practices. Ensure a consistent user experience through our design system and Storybook. Champion testing, performance optimization, and accessibility. Drive innovation by introducing and promoting AI-assisted tools (e.g. Copilot, ChatGPT, AI testing tools) and modern workflows that enhance developer efficiency and product quality. Shape How We WorkHelp improve team processes using Agile methodologies (Scrum or Kanban). Balance technical priorities, product goals, and delivery timelines effectively. RequirementsWE WOULD LOVE TO HEAR FROM YOU IF YOU HAVE Required: 6+ years of frontend development experience, including 2+ years in a lead or tech lead roleStrong expertise in React, Redux, TypeScript, and modern frontend toolingExperience with design systems, component-driven development, and testing frameworks (Jest, React Testing Library, Cypress)Proven ability to mentor engineers and create PDPs to support growthComfortable engaging in backend and architectural discussions to shape full-stack solutionsFamiliarity with Agile practices and cross-functional collaborationInterest or hands-on experience with AI tools for development or product innovation Bonus points if you have:Experience working in mixed teams of FE + BE engineers, and willingness to engage with backend matters when neededFamiliarity with AWS, Kubernetes, or cloud-native environmentsKnowledge of performance optimization in large-scale React appsContributions to open-source frontend frameworks or design systemsExperience integrating AI/ML features into customer-facing applicationsBenefitsWHAT WE OFFER Attractive compensation package based on experience and skillset 30 days of paid annual leave Comprehensive private health insurance coverage for your entire family Hybrid way of work Yoga classes, Life Coach, Running Coach and Kick-Boxing Sessions Cool start-up environment (with swag, and much more) Harbor Lab is certified as Great Place to Work in Greece and is an equal opportunity employer and prohibits discrimination on the basis of race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.Harbor Lab collects and processes personal data in accordance with the EU General Data Protection Regulation (GDPR). We are bound to use the information provided within your job application for recruitment purposes only and not to share these with any third parties. We will keep your resume in our database for any future consideration. In case you want to be deleted from our database, you can contact us at people@harborlab.com If you are applying to this job post, then we assume that you have the legal right to work in the EU.