UI Developer

Responsibilities:

• Develop and maintain UI components using JavaScript, Next.js, Lit.js, and TypeScript, ensuring modularity and reusability.
• Collaborate with designers, backend developers, and product teams to create responsive, high-performance web applications.
• Optimize UI performance by implementing Core Web Vitals best practices.
• Implement Technical SEO strategies, including structured data, metadata optimization, and server-side rendering (SSR) improvements.
• Ensure cross-browser compatibility, accessibility (WCAG standards), and mobile-first design principles.
• Work on web performance optimization using Lighthouse and DevTools.
• Integrate frontend components with headless CMS (e. g., Strapi) and backend APIs.
• Maintain code quality through unit testing, code reviews, and SonarQube analysis.
• Troubleshoot and resolve UI/UX issues, collaborating with QA engineers and stakeholders.

Requirements:

• 3-6 years of experience in frontend development.
• Strong proficiency in TypeScript and Lit.js .
• Experience in Technical SEO, including schema markup, page speed optimization, and SEO-friendly UI development.
• Knowledge of Core Web Vitals, Lighthouse, and DevTools for performance analysis.
• Understanding of Web Components and modular frontend architecture.
• Experience integrating frontend with CMS platforms like Strapi.
• Familiarity with Git, CI/CD pipelines, and agile development processes.
• Strong debugging and troubleshooting skills.

Nice to Have:

• Experience with Next.js or React.
• Knowledge of server-side rendering (SSR) and static site generation (SSG).
• Familiarity with legal or regulatory tech environments.
• Hands-on experience with SonarQube for code quality analysis.

Job Description:

We are looking for a good JavaScript developer who is proficient with React.js. Your primary focus will be on developing user interface components and implementing them following well-known React.js workflows (such as Flux or Redux). You will ensure that these components and the overall application are robust and easy to maintain. You will coordinate with the rest of the team working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product is important.

Responsibilities

• Developing new user-facing features using React.js
• Building reusable components and front-end libraries for future use
• Translating designs and wireframes into high-quality code
• Optimizing components for maximum performance across a vast array of web-capable devices and browsers

Skills:

• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
• Thorough understanding of React.js and its core principles
• Experience with popular React.js workflows (Redux)
• Familiarity with newer specifications of ECMAScript
• Experience with data structure libraries (e.g., Immutable.js)
• Knowledge of isomorphic React is a plus
• Familiarity with RESTful APIs
• Knowledge of modern authorization mechanisms, such as JSON Web Token
• Familiarity with modern front-end build pipelines and tools
• Ability to understand business requirements and translate them into technical requirements
• A knack for benchmarking and optimization
• Familiarity with code versioning tools (such as Git, SVN, and Mercurial)

KEY RESPONSIBILITIES:

• Collaborate with Project Manager or Project Consultant to develop front end of mobile and web application
• Delivering a complete front-end application
• Ensuring high performance on mobile and desktop
• Writing tested, idiomatic, and documented JavaScript, HTML and CSS
• Coordinating the workflow between the graphic designer, the HTML coder, and yourself
• Cooperating with the back-end developer in the process of building the RESTful API
• Collaborate with the stakeholders, the users, the build team and other development partners to implement state-of-the-art user experiences.
• Collaborate with cross-functional teams to analyze, design, and ship new features
• Participate actively in discussions, presentations and decisions about front end development, web application, mobile app etc.
• Act as the impulse by providing clear guidance to the team’s questions during implementation phases
• Implement new technologies to maximize application performance
• Work with outside data sources and APIs
• Work on bug fixing and improving application performance

KEY COMPETENCIES & SKILLS:

• Strong object-oriented JavaScript
• Flat box, material design concepts
• AngularJS, MVC frameworks – Angular
• CSS precompilers like Sass and LESS
• Skills in one or more chosen frameworks/libraries like jQuery or Bootstrap
• AJAX (Asynchronous JavaScript and XML)
• HTML 5, CSS Modules, Web pack, Babel, npm
• jQuery, jQueryUI, RequireJS, doT.js (Templating Engine)
• Able to integrate existing API (REST)
• Understanding of java web application technology stack (core Java, spring core, Spring MVC, Hibernate, REST)
• Git/GitHub, Continuous integration using maven & Jenkins
• Integrate applications with network systems, servers and databases.
• Troubleshoot problems with application development and use
• Excellent conceptual, and critical thinking capabilities
• Self-directed and self-motivated with the ability to take charge or play a supporting role
• Strong understanding of product development
• Clear written and verbal communications skills (English), including presentation skill
• Basic knowledge of Microsoft Office (Word, Excel and PowerPoint) is required.

• Designing, developing, and testing UI for mobile and web applications
• Build reusable code and libraries for future use
• Accurately translate user and business needs into functional frontend code.
• Developing new user-facing features using React and redux
• Building reusable components and front-end libraries for future use.
• Translating designs and wireframes into high-quality code with proper standards.
• Optimizing components for maximum performance across a vast array of web-capable devices and browsers.
• Work with outside data sources and APIs.
• Added Advantage: Knowledge and experience in Cloud Computing

As a Mid Level Front-End Developer, you will:

Create well-designed, documented, and tested front end solutions using modern JavaScript frameworks, such as React and Redux, CSS-in-JS, Styled Components, etc.

Collaborate with clients, project managers, UX designers, and other developers to gain a thorough understanding of project requirements within agreed-upon scope and architecture designs

Translate wireframes into fully functional user interfaces and proactively address edge case scenarios

Collaborate with back-end developers to design REST APIs and request/response schemas

Perform code reviews with constructive feedback

Promote clean code, best practices, and consistent design patterns across the team

Write infrastructure as code and automated deployment scripts for customer delivery

Provide development estimates from granular tasks to comprehensive projects/applications

Lead and present technical discussions to clients, including knowledge transfers

Take on additional responsibilities over time and become a key contributor for scaling team size

Responsibilities:

• To build next-generation complex web applications that are efficient and modular.
• Works closely with UX designers and back-end engineers to implement versatile front-end solutions and new features.
• Responsible for integration with the services that reside on the back end.

Must-have skills:

• 2+ years of experience in building Single page applications using HTML5 CSS3 and AngularJS.
• In-depth knowledge on HTML5 and CSS is mustHands-on experience integrating upstream services, REST APIs.
• Hands-on with JS and preferably worked with Angular2+.
• Hands-on with automation/bundler like Gulp, Grunt or webpack.
• Extremely detail-oriented to strive for pixel perfection across all browsers.

Front-end Developer

*H1 is a Spanish fin/proptech that revolutionizes the mortgage market by offering bank-risk approved loans before knowing the house an individual wants to purchase. It also offers a powerful selling tool for real estate agents and developers that helps manage their businesses. From there, H1 is building a community of millions of high credit profile users (individuals + companies) that use the credit marketplace technology to access a multiproduct platform (including banking and non-banking capital and multiple financial and credit scoring products) that becomes a financial partner for individuals and companies as well as a personal documentation encrypted storage for all family or group members (SAAS model).

*H1 is the future of digital banking. 

*Recently capitalized, and in a strong growth phase to expand nationally and into 5 additional countries.

About the Job:

H1 seeks front-end developers with experience on React, UX and responsive layout for our development team

In this role, you will report directly to the CTO

Agile based organization, with bi-weekly sprints on long-term project

Responsibilities:

• Build an extraordinary tech product (software) from an user centric perspective, for all the different actors involved with the organization and in direct contact with the technology (clients, management, finance, risk/operations team, commercial team, marketing, etc.) 
• Working with the CTO to build the roadmap and agile based organization required.
• Receive and react to product feedback from all internal and external stakeholders
• Create and optimize company web applications
• Product KPIs, and product releases on a recurring basis
• Producing reports to monitor level of usability, engagement, etc. (product metrics and analytics)
• Contributing to deliver the expected results from a usability and engagement perspective

About You:

• With strong software product background, and extraordinary capabilities in terms of product strategy development and usability 
• 3-6+ years robust experience on developing software products in an agile based organization
• Demonstrated success in bringing new products to market, capturing market share and delivering market leading products and services.
• Clear examples of products managed or developed during his/her career 
• Strategic thinking: you are able to think at the strategic level and make the link with the pixel level 
• Able to work in a flat and transparent manner within a fast paced environment
• Results oriented
• Academic education in tech/product/digital related careers
• High level english (spoken and written). Spanish at any level would be a great plus.
• Entrepreneurial mindset: Is looking for a very ambitious project. Due to the stage of growth kick-off the upside could be extraordinary (a life-time opportunity)

Skills:

• Great flavour towards software products
• High expertise and excellence on software usability and user experience optimization. Expertise in software design
• Sensitivity towards customers and users
• Data driven decision making
• Deep knowledge of the digital world
• Fintech / Proptech / Digital banking background experience will be very positively considered, but not necessarily needed
• ReactJS on typescript with class and hooks
• Experience with responsive design
• Css with less compiler experience
• Long SPA development using json web tokens security
• AntD library would be a plus
• Experience in working with tech teams, on an agile based style
• Proactive and able to take initiative. Decisive and resolute
• “Out of the box” thinker
• Creative thinker
• Works well in a team and with a wide range of people from different backgrounds and ages
• Organised and methodical
• Succeeds under pressure
• Is able to have fun and keep a positive atmosphere in the team

Location of Headquarters: Madrid, Spain

Tech Hub in India: Office in Bangalore, Karnataka (India). Full tech team between Madrid, Spain + Bangalore, India

This is a unique opportunity to contribute heavily to the growth of an innovative, market-leading Fintech & Proptech company.

Salary Range: 40k-90k Rupees monthly (5 Lakhs - 11 Lakhs per annum)