Regular Frontend Developer

2 days ago


Remote Gdynia Gdańsk, Czech Republic Sphere Engine Full time

Must have:

  1. 3+ years of experience in web development
  2. Fluency in JavaScript, CSS, HTML
  3. React
  4. Node.js
  5. Typescript
  6. RESTful API
  7. Git, Docker basics
  8. Awareness of modern web browsers' inner workings (security, performance, rendering, debugging, etc.)
  9. Experience with responsive design, cross-browser compatibility, and performance optimization
  10. Good debugging skills
  11. Good problem-solving skills
  12. Polish and English (communicative levels)

Nice to have:

  1. Next.js
  2. Linux & Bash
  3. Python
  4. Familiarity with CI/CD practices and tools
  5. Familiarity with testing frameworks


We're a product company, not just another software house. We provide online source code execution and skill evaluation solutions to tech companies like scale.ai, w3schools.com, and Infosys.

Our IDE supports complex tech stacks, AI challenges, and large-scale hackathons with thousands of participants. Now, we're looking for talented developers to help take our online IDE to the next level.

As a developer at Sphere Engine, you'll be building a fast, user-friendly front-end while collaborating closely with backend developers. You'll play a key role in improving and expanding our core service, Sphere Engine, as well as completely rebuilding from the ground up community-driven platforms for programmers: ideone.com and spoj.com. You will get to know our product deeply and participate in its evolution and deployment. And the most fun part - you will need to learn new stuff all the time, and you will get paid for that.

Sphere Engine was founded by programmers, our clients are programmers, and our end-users are developers too. If you love programming and are friendly and open-minded, we want to hear from you

Recruitment process:

  1. Introductory phone call - we will tell you about ourselves, and we want to find out what you are looking for in your new job. We will also answer any questions you might have.
  2. A short task - we will ask you to write some code to find out how you think.
  3. Technical screening - we will talk about your experience and the code you wrote and want to hear your thoughts about web development and problem-solving in general. And we hope you bring even more questions with you
  4. The decision - if we're a match, that's it
,[Design, develop, and maintain web apps and their UIs, Ensure code quality through the implementation of unit and integration tests, Optimize products in terms of reliability and responsiveness, Work closely with backend developers, Research and expand the list of technologies supported by our source code execution engine, Perform code reviews, If it's up your alley: working directly with customers: from support, through task estimation, to implementation and delivery] Requirements: React, Node.js, HTML5, Java Script, CSS3, REST API, TypeScript, Git, Next.js, Docker, Linux, Bash, Python, CI/CD Tools: YouTrack, GitLab, GIT, Agile, Scrum, Kanban. Additionally: We understand good work-life balance , Friendly team that loves programming , Training budget for learning and coaching , Flat structure, Small teams, Challenging projects , We learn new technologies every day , Mentoring, Real impact and independence at work, In-house trainings, Modern office, Startup atmosphere, No dress code, Optional meetings in Tricity (Trójmiasto) , Free lunch.

  • Remote, Gdynia, Gdańsk, Czech Republic Sphere Engine Full time

    Must have:3+ years of experience in web developmentFluency in JavaScript, CSS, HTMLReactNode.jsTypescriptRESTful APIGit, Docker basicsAwareness of modern web browsers' inner workings (security, performance, rendering, debugging, etc.)Experience with responsive design, cross-browser compatibility, and performance optimizationGood debugging skillsGood...


  • Remote, Warszawa, Czech Republic Blazity Full time

    Our requirements 4 years hands on experience in React and Next.JS Advanced knowledge of Next.js (including pages router and app router) and TypeScript. Experience with headless CMS, ideally Sanity. Proficiency in English (C1 level) is essential for effective communication with the client. Strong problem-solving skills, proactivity, and a consulting...


  • Remote, Czech Republic Scale It Up Full time

    Company OverviewAt Scale It Up, we are reshaping our team to focus on delivering high-quality solutions and contributing to the company's overall growth. As a key member of this team, you will play a crucial role in helping us achieve our vision.Job DescriptionWe are seeking a Senior React/TS Engineer to join our product company, which is at the forefront of...

  • Senior FrontEnd

    2 days ago


    Remote, Czech Republic IRONSCALES Full time

    We are IRONSCALES! We Fight Phishing. We are an AI-driven email security solution that continuously detects and remediates advanced threats for global organizations of any size. Our solution is fast to deploy, easy to operate, and provides unparalleled protection against email threats! We care about people. We care about cybersecurity. We care about our...


  • Remote, Gdynia, Warszawa, Poznań, Kraków, Wrocław, Czech Republic Idego Group Sp. z o.o. Full time

    About Us:Idego Group Sp. z o.o. is a team of experienced problem solvers focused on delivering high-quality solutions in three areas: Cloud, Data & AI, and Software development.We value autonomy, common sense, and zero micromanagement, recognizing that our employees are human beings with personal lives. We've been 100% remote-friendly for years, taking...

  • Frontend Developer

    2 days ago


    Remote, Czech Republic Britenet Full time

    Our expectations: 3+ years of hands-on experience with Vue.js 3, including Composition API and component-based architecture.  Strong knowledge of Pinia for state management.  Proficiency in TypeScript and best practices in frontend development.  Experience with Vite for project setup and optimization.  Understanding of clean code principles and...


  • Remote, Kraków, Czech Republic Strix Full time

    Company OverviewAt Strix, we're shaping the future of commerce by empowering businesses to thrive in an ever-evolving market. Our team is comprised of experts who share a passion for innovative solutions and a commitment to excellence.Job DescriptionWe're seeking a seasoned Frontend Developer with extensive experience in e-commerce solutions to join our...


  • Remote, Kraków, Czech Republic Strix Full time

    Dream big. Code bigger. Join usWe are looking for a talented and ambitious developer to work in an international environment on innovative, big-scale projects. We offer excellent growth opportunities. Expect a team with a great atmosphere, an environment where ideas thrive, and opportunities that take your career to the next level. Get to know our values:...


  • Remote, Czech Republic Antavo Kft. Full time

    Experience: Past work experience developing single page applications and progressive web applications (PWA). Technical Skills: Solid understanding of HTML, CSS (with preprocessors like Sass, Stylus or Less), and JavaScript. Extensive experience with Vue.js and Nuxt, as well as a strong foundation in vanilla JavaScript. Familiarity with frontend...

  • Frontend Developer

    2 days ago


    Remote, Poznań, Czech Republic Profitroom S.A. Full time

    At least 2 years of experience in frontend development. Strong proficiency in Vue.js (Vue 2 & Vue 3) and its ecosystem (Vuex/Pinia, vue-router, vue-i18n). Solid knowledge of HTML, CSS, JavaScript, and build tools (Vite/Webpack). Experience with version control systems (Git preferred). Familiarity with frontend unit testing frameworks...


  • Remote, Budapest, Czech Republic High Edge Software Full time

    5+ years of Frontend development experience Profound Javascript/Typescript knowledge. Confident C#/.NET knowledge. Proficiency with HTML and CSS. Knowledge of programming patterns and an ability to use them. Unit testing experience. Knowledge of basic algorithms and data structures and an ability to use them. Knowledge of Git. Would be a...


  • Remote, Warsaw, Czech Republic Blazity Full time

    At least 4-5 years of experience as a Frontend Developer, Strong proficiency in React and Next.js (App router), Experience working with fast-path enviroment, trunk-based development,, Experience in e-commerce platform integrations and headless architecture, Understanding of performance optimization techniques in web applications, Knowledge of CMS platforms...


  • Remote, Czech Republic AVENGA Full time

    As a Technical Expert for Frontend Development at AVENGA, you will play a vital role in shaping the digital experience of our clients.Key Responsibilities:React.js Mastery: Leverage your expertise in React.js to craft dynamic user interfaces that delight and engage users.Frontend Proficiency: Demonstrate a solid grasp of HTML5, CSS3, and JavaScript (ES6+)...

  • Frontend Developer

    2 days ago


    Remote, Poznań, Czech Republic Profitroom S.A. Full time

    3+ years of frontend development experience. Proficiency in Vue.js (Vue 2 & Vue 3) and its ecosystem (Vuetify, Vuex/Pinia, vue-router, vue-i18n). Strong skills in HTML, CSS, JavaScript, and build tools (Vite/Webpack). Experience with Git, unit testing (Vitest/Jest), TypeScript, and CSS preprocessors. Interest in optimizing workflows with AI...


  • Remote, Wrocław, Warszawa, Kraków, Czech Republic Holisticon Connect Full time

    We are a dynamic and innovative software development company, Holisticon Connect, part of the NEXER GROUP. We have been delivering custom software solutions since 2017 and have expanded to a team of over 140 professionals across Poland.Our expertise lies in developing cutting-edge projects for world-renowned brands from Scandinavia, the UK, and Western...


  • Remote, Czech Republic AVENGA Full time

    At least 5-years of experience English level: B2/C1 Expert knowledge in creating application front-ends using JavaScript and related technologies/frameworks Coding using JS Design Patterns Creation of CSS and JS code working on multiple browsers and mobile platforms Knowledge of: semantic HTML markup, presentation separation of content and page HTML...


  • Remote, Warszawa, Czech Republic AVENGA Full time

    Job Description:We are seeking a highly skilled Senior Backend and Frontend Developer Specialist to join our team at AVENGA. As a key member of our development team, you will be responsible for designing, developing, and maintaining full-stack applications using Angular, Python, and Django.About the Role:Design and implement efficient workflows for metadata...


  • Remote, Czech Republic Secret Sauce Partners, Inc. Full time

    Must-haves At least 5 years experience in frontend development positions Experience with modern frontend frameworks, especially with React Experience with the Svelte framework Ability to build things from scratch Fluency with web technologies An eye for a good product and user experience A strong notion of clean code and good coding practices A strong...


  • Remote, Opole, Czech Republic Staffbit Full time

    At least 6 + years of professional experience in frontend development, with a strong emphasis on React and Next.js. At least 4+ years of experience in backend development, ideally using Node.js. A proven track record of developing scalable, high-quality applications. Knowledge of software testing tools and practices to ensure code quality. Strong...


  • Remote, Czech Republic Adaptiq Full time

    BS/MS in Computer Science or Engineering.At least 2 years of experience as a team leader.Experience mentoring and supporting developers in their growth.6+ years of hands-on experience in backend and frontend development.3+ years of experience with React, single-page applications, and modern frontend paradigms.6+ years of significant experience with...