Frontend Developer (React)

Posted 3 Days Ago
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Hiring Remotely in Poland
Remote
Senior level
Information Technology • Software • Business Intelligence
The Role
Develop and maintain high-quality React and Next.js applications for mobile and desktop. Responsibilities include writing reusable code, optimizing performance, troubleshooting bugs, collaborating with cross-functional and offshore teams, participating in Agile ceremonies, maintaining code quality, testing applications, and sharing technical knowledge. The role requires strong JavaScript and TypeScript expertise, web security and performance knowledge, distributed microservices experience, cloud development, responsive design, and modern frontend testing practices.
Summary Generated by Built In
Growth through diversity, equity, and inclusion. As an ethical business, we do what is right — including ensuring equal opportunities and fostering a safe, respectful workplace for each of us. We believe diversity fuels both personal and business growth. We're committed to building an inclusive community where all our people thrive regardless of their backgrounds, identities, or other personal characteristics.

Tasks

    • Design, build and maintain efficient, reusable and reliable code.
    • Build React/Next.js based applications.
    • Ensure the best possible performance, quality, and responsiveness of applications.
    • Identify bottlenecks and bugs, and devise solutions to mitigate and address these issues.
    • Help maintain code quality.
    • Participate in the agile team scrums and effectively communicate to the team the status, roadblocks, and timelines for the task at hand.
    • Must be able to collaborate with BA, QA, developers and offshore developers to plan, design, develop, test, and maintain mobile web and desktop-based applications requested by the stakeholders.
    • Share knowledge with the team during workshops.

Requirements

    What we're looking for:
    • 5+ years of professional experience.
    • Strong experience in JavaScript and TypeScript.
    • Thorough understanding of React/Next.js core principles along with React router, hooks, Redux (or the like) workflows, Web performance and security.
    • Developing and maintaining modern distributed micro services.
    • Development in Cloud environments (Google Cloud Platform preferred).
    • Building, testing, and troubleshooting high volume web services using API Protocols and Data Formats (REST & JSON).
    • Solid foundation in data structures, algorithms and its implementation in JS.
    • Expertise with semantic HTML.
    • Proficiency in CSS, including Tailwind, Styled Components, CSS Modules, and SASS.
    • Expertise browser-based debugging tools.
    • Experience with responsive and adaptive design.
    • Experience with Testing (Unit Testing, react-testing-library, E2E).
    • Keen understanding of web application development process and standard methodologies.
    • Excellent communication skills.
    • Great ownership of assigned tasks.
    • Self-driven and proactive approach.
    • English (B2+)
    • Nice to have

      • Previous experience in Frontend development with Docker.
      • Experience with Headless CMS (preferably Contentful).
      • Experience with NodeJS
      • Knowledge of GraphQL.
      • Missing one or two of these qualifications? We still want to hear from you! If you bring a positive mindset, we'll provide an environment where you feel valued and empowered to learn and grow.

We offer:
  • Stable employment. On the market since 2008, 1800+ talents currently on board in 7 global sites.
  • “Office as an option” model. You can choose to work remotely or in the office.
  • Workation. Enjoy working from inspiring locations in line with our workation policy.
  • Great Place to Work® certified employer.
  • Flexibility regarding working hours and your preferred form of contract.
  • Comprehensive online onboarding program with a “Buddy” from day 1.
  • Cooperation with top-tier engineers and experts.
  • Unlimited access to the Udemy learning platform from day 1.
  • Certificate training programs. Lingarians earn 500+ technology certificates yearly.
  • Upskilling support. Capability development programs, Competency Centers, knowledge sharing sessions, community webinars, 110+ training opportunities yearly.
  • Grow as we grow as a company. 76% of our managers are internal promotions.
  • A diverse, inclusive, and values-driven community.
  • Autonomy to choose the way you work. We trust your ideas.
  • Create our community together. Refer your friends to receive bonuses.
  • Activities to support your well-being and health.
  • Plenty of opportunities to donate to charities and support the environment.
  • Modern office equipment. Purchased for you or available to borrow, depending on your location.

Skills Required

  • 5+ years of professional experience
  • Strong experience with JavaScript and TypeScript
  • Thorough understanding of React and Next.js core principles
  • Experience with React Router, hooks, and Redux or comparable state-management workflows
  • Knowledge of web performance and security
  • Experience developing and maintaining modern distributed microservices
  • Experience developing in cloud environments, preferably Google Cloud Platform
  • Experience building, testing, and troubleshooting high-volume web services using REST and JSON
  • Strong foundation in data structures and algorithms implemented in JavaScript
  • Expertise with semantic HTML
  • Proficiency in CSS, including Tailwind, Styled Components, CSS Modules, and Sass
  • Expertise with browser-based debugging tools
  • Experience with responsive and adaptive design
  • Experience with unit testing, react-testing-library, and end-to-end testing
  • Understanding of web application development processes and standard methodologies
  • Excellent communication skills
  • Strong ownership of assigned tasks
  • Self-driven and proactive approach
  • English proficiency at B2 level or higher
  • Previous frontend development experience with Docker
  • Experience with a headless CMS, preferably Contentful
  • Experience with Node.js
  • Knowledge of GraphQL
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The Company
HQ: Warsaw
1,340 Employees
Year Founded: 2008

What We Do

You’ve got the data — now what’s next? Many businesses are overwhelmed by data and struggle to turn it into real business impact. At Lingaro, we empower global brands and companies to achieve more with data. From strategy development to scalable solutions, we guide you every step of the way. We transform raw data into actionable insights with deep tech expertise, sharp business sense, and a user-centric mindset. Rooted in Europe and operating worldwide, we deliver with agility, a fresh perspective, and a proven track record. Join 75+ leading CPG companies across 30+ countries that have already transformed their business with Lingaro. Be data ready. Be business ready. Be future ready. Contact us at https://lingarogroup.com/contact_us to get started. Want to know more? Check our recognitions & awards below. 🏆 Positioned as a Leader in ISG Provider Lens™ 2025 – Generative AI Services in Strategy & Consulting and Development & Deployment 🏆 Identified as a Leader in ISG Provider Lens™ 2025 – Specialty Analytics Services in Supply Chain and Retail & CPG 🏆 Strong Performer in the Gartner® Peer Insights™ 2022 and 2024 "Voice of the Customer" reports 🏆 Major Contender in the Everest Group® 2024 Analytics and AI Services Specialists PEAK Matrix® Assessment 🏆 Listee in the Gartner® 2024 Guide to Service Providers for GenAI Initiatives 🏆 Great Place to Work® in Poland, the Philippines, and India in 2024

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