Senior UI Developer (IR-518)

📍 Job Overview

Job Title: Senior UI Developer (IR-518)

Company: Intellectsoft

Location: Spain

Job Type: FULL_TIME

Category: Frontend Development / UI Operations

Date Posted: May 07, 2026

Experience Level: 5-10 Years

Remote Status: Fully Remote

🚀 Role Summary

• Develop and implement highly responsive user interface components and front-end architecture using React.js.

• Instill best practices for software development, ensuring designs meet requirements and delivering high-quality work on schedule.

• Write application interface code using JavaScript, adhering to React.js workflows and optimizing for performance.

• Troubleshoot interface software, debug application code, and document all application changes and updates.

📝 Enhancement Note: While the title is "Senior UI Developer," the responsibilities and required skills, particularly those involving process and workflow, suggest a strong element of UI Operations. This role requires not just development but also the implementation of best practices, debugging, and documentation, which are core to operational excellence in software development. The AI-powered platform context also hints at a need for understanding how UI integrates with data analysis and decision-making processes.

📈 Primary Responsibilities

• Develop and implement highly responsive user interface components using React concepts and best practices.

• Write application interface code using JavaScript, following React.js workflows for efficient and maintainable code.

• Troubleshoot interface software and debug application code to ensure a seamless user experience and system stability.

• Develop and implement front-end architecture to support user interface concepts, focusing on scalability and modularity.

• Optimize components for maximum performance across a vast array of web-capable devices and browsers.

• Document application changes, develop updates, and contribute to the overall software development lifecycle.

• Collaborate with cross-functional teams (UX, Product Management, Marketing) to ensure cohesive product development.

📝 Enhancement Note: The responsibilities emphasize not just coding but also the operational aspects of software development, such as ensuring quality, performance optimization, documentation, and cross-functional collaboration. This aligns with a UI Operations perspective, where the focus is on the efficient and effective delivery of the user interface as a functional component of a larger system.

🎓 Skills & Qualifications

Education: Bachelor’s or Master’s degree in Computer Science or a related field.

Experience: 5+ years of commercial experience in frontend development, specifically with UI development using ReactJS.

Required Skills:

• Strong experience in frontend development, specifically 5+ years of commercial experience with UI development using ReactJS.

• React Expertise: Strong knowledge of React.js and related workflows.

• Core Web Technologies: In-depth knowledge of JavaScript, HTML, and CSS.

• State Management & Tools: Proficiency with Redux, Flux, Webpack, and Enzyme.

Preferred Skills:

• Advanced Frameworks: Experience with TypeScript, Angular, or Vue.js.

• Architecture: Familiarity with micro-frontend architecture to improve code modularity and scalability.

• Testing & Quality: Hands-on experience with testing tools like Cypress or Enzyme.

• Specialized Tools: Knowledge of Socket.io, Strapi CMS, or 3CX APIs.

• Cross-functional Collaboration: Experience working with UX, Product Management, or Marketing teams.

📝 Enhancement Note: The extensive list of required and preferred skills, particularly those related to state management, build processes, testing, and architecture patterns like micro-frontends, indicates a need for a developer who can not only build but also manage and optimize the UI development process. This goes beyond basic development into operational efficiency and strategic implementation.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Showcase projects demonstrating experience with ReactJS, emphasizing responsive UI development and component optimization.

• Include examples of complex JavaScript, HTML, and CSS implementations, detailing the problem-solving approach.

• Present case studies of state management solutions using Redux or Flux, highlighting efficiency gains and maintainability.

Process Documentation:

• Provide documentation for at least one significant project, detailing the development workflow from conception to deployment.

• Illustrate experience with code review processes, including feedback loops and quality assurance measures.

• Showcase examples of how testing methodologies (e.g., unit, integration) were applied to ensure software quality and performance.

• Detail any contributions to front-end architecture or the implementation of micro-frontend strategies.

📝 Enhancement Note: For a Senior UI Developer role with operational undertones, a portfolio that highlights not just finished products but also the process behind their creation is crucial. This includes demonstrating how the developer approaches code reviews, testing, architecture, and documentation – all key aspects of UI operations and efficient software delivery.

💵 Compensation & Benefits

Salary Range: Given the Senior level, 5+ years of experience, and remote status within Spain (Europe/Western Europe benchmark), a competitive salary range would typically fall between €55,000 - €80,000 annually. This is an estimate based on industry standards for experienced remote UI developers in Western Europe, adjusted for Spain's cost of living and market rates.

Benefits:

• Udemy courses of your choice for continuous learning and skill development.

• Regular team-building events, marathons, and charity activities for fostering a strong team connection.

• Workshops, trainings, and expert knowledge-sharing sessions to facilitate professional growth.

• A clear career path with defined opportunities for advancement within the organization.

• Absence days dedicated to work-life balance, promoting employee well-being.

• Flexible hours and a flexible work setup, allowing you to work from anywhere and organize your day effectively.

Working Hours: Standard full-time commitment, likely around 40 hours per week, with flexible scheduling and the ability to work from anywhere.

📝 Enhancement Note: The salary estimate is based on current market data for senior-level frontend developers in Spain, considering the remote work arrangement which often commands a premium or aligns with the higher end of local ranges. The benefits package, particularly the emphasis on learning, flexibility, and work-life balance, is highly attractive to experienced operations and development professionals.

🎯 Team & Company Context

🏢 Company Culture

Industry: Software Development, Technology Solutions, AI-powered Platforms. Intellectsoft specializes in delivering innovative solutions across various sectors including Fintech, Healthcare, EdTech, Construction, and Hospitality. This diverse industry exposure means the UI operations will need to be adaptable to different compliance, user experience, and data privacy requirements.

Company Size: Intellectsoft operates across North America, Latin America, the Nordic region, the UK, and Europe. While an exact headcount isn't provided, its international presence and client list (Jaguar Motors, Universal Pictures, Harley-Davidson) suggest a mid-to-large-sized organization with established processes and a significant operational footprint.

Founded: 2007. With over a decade of experience, Intellectsoft has a proven track record of delivering complex software solutions, indicating a mature development and operational framework.

Team Structure:

• The UI development team likely includes specialized roles such as UI Developers, UI/UX Designers, and potentially UI Engineers focused on performance and optimization.

• Reporting structure is anticipated to be hierarchical, with senior developers potentially leading smaller project teams or mentoring junior members.

Methodology:

• Data analysis and insights are crucial, especially given the client's AI-powered platform. The UI must effectively present these insights.

• Workflow planning and optimization strategies will be applied to the development and deployment of UI components.

• Automation and efficiency practices are likely employed in build processes, testing, and code deployment.

Company Website: www.intellectsoft.net

📝 Enhancement Note: The company's broad industry reach and prestigious client list imply a need for robust, scalable, and well-documented UI development processes. This Senior UI Developer role is positioned to contribute significantly to the operational excellence of their product development, ensuring that the user interface is not only functional but also a well-managed asset.

📈 Career & Growth Analysis

Operations Career Level: This is a Senior-level position. In UI Operations, this typically means leading development efforts, mentoring junior team members, contributing to architectural decisions, and owning the delivery of complex UI features. It involves a high degree of autonomy and responsibility for the quality and efficiency of UI development processes.

Reporting Structure: The Senior UI Developer will likely report to a Lead Frontend Developer, Engineering Manager, or a Head of Engineering. They will collaborate closely with Product Managers, UX Designers, and potentially other engineering leads.

Operations Impact: The UI Developer's impact is direct on user experience, customer satisfaction, and ultimately, the adoption and success of the AI-powered platform. By ensuring a responsive, performant, and intuitive interface, they directly contribute to the platform's ability to drive better business decisions and efficiency for clients.

Growth Opportunities:

• Operations Skill Advancement: Opportunities to deepen expertise in UI architecture, performance optimization, and potentially explore full-stack capabilities.

• Learning & Development: Access to Udemy courses, workshops, and trainings to acquire new skills (e.g., advanced TypeScript, new frameworks, DevOps principles).

• Leadership Potential: Potential to grow into a Tech Lead role, managing a small team of UI developers, or specializing in areas like UI performance engineering or front-end architecture.

📝 Enhancement Note: The "Senior" title, combined with the emphasis on best practices and architecture, positions this role as a stepping stone for leadership within UI development operations. The provided growth opportunities confirm a structured approach to career progression.

🌐 Work Environment

Office Type: Fully Remote. This offers maximum flexibility in terms of location and work schedule.

Office Location(s): Spain. While fully remote, the role is designated for individuals based in Spain, likely for tax, legal, or timezone alignment purposes. This allows for flexibility within Spain's various regions.

Workspace Context:

• Collaborative Environment: Despite being remote, the company fosters connection through virtual team-building events, workshops, and knowledge-sharing sessions. Expect regular virtual meetings and collaboration tools.

• Operations Tools & Technology: Access to modern development tools, source control, CI/CD pipelines, and communication platforms is expected to support efficient remote work.

• Operations Team Interaction: Opportunities for regular interaction with UX, Product Management, and other developers through scheduled meetings, Slack/Teams channels, and collaborative coding sessions.

Work Schedule: Flexible hours and work setup, allowing individuals to organize their day effectively. This flexibility is key for optimizing productivity and work-life balance, a common trait in modern remote development operations.

📝 Enhancement Note: The fully remote nature within Spain, coupled with flexible hours, emphasizes a modern, results-oriented work environment. The focus on virtual collaboration and continuous learning is typical for tech companies that prioritize employee well-being and operational efficiency in a distributed setting.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: A review of your resume and portfolio to assess core skills and experience against the job requirements. Be prepared to highlight your ReactJS expertise and specific project contributions.

• Technical Interview(s): In-depth discussions covering JavaScript, React concepts, state management (Redux/Flux), and front-end architecture. Expect coding challenges or live coding exercises focusing on problem-solving and efficient implementation.

• Portfolio Presentation: A dedicated session to walk through selected projects from your portfolio. Showcase your approach to UI development, problem-solving, and impact. Focus on projects that demonstrate responsive design, performance optimization, and collaboration.

• Team/Cultural Fit Interview: Discussion with potential team members or a hiring manager to assess your collaboration style, communication skills, and alignment with Intellectsoft's values and work environment.

Portfolio Review Tips:

• Showcase Process, Not Just Product: Emphasize your role, the challenges faced, the solutions implemented, and the outcomes achieved. Use metrics where possible (e.g., performance improvements, user adoption rates).

• Highlight ReactJS Mastery: Dedicate sections to projects that clearly demonstrate advanced React concepts, state management, and component architecture.

• Demonstrate Operational Thinking: Include examples of how you've improved development processes, contributed to code reviews, implemented testing strategies, or documented significant changes.

• Tailor to the Role: Select projects that align with the AI-powered platform context, showing an ability to handle complex data visualization or interactive interfaces.

Challenge Preparation:

• Practice React Coding: Be ready for algorithm-based coding challenges and component implementation tasks in React.

• Prepare for Architectural Questions: Think about how you would design scalable and maintainable front-end architectures, including micro-frontends.

• Articulate Your Process: Be prepared to explain your approach to debugging, testing, code reviews, and documentation in detail.

📝 Enhancement Note: The emphasis on a portfolio review and potential coding challenges suggests that Intellectsoft values practical application of skills. For a senior role, demonstrating not just coding ability but also an understanding of development processes and operational efficiency will be key.

🛠 Tools & Technology Stack

Primary Tools:

• ReactJS: The core framework for UI development. Proficiency is essential.

• JavaScript, HTML, CSS: Fundamental web technologies.

• Redux/Flux: For state management in complex applications.

• Webpack: For module bundling and build processes.

• Enzyme: For component testing in React.

Analytics & Reporting:

CRM & Automation:

• Source Control: Git (e.g., GitHub, GitLab, Bitbucket) is a standard requirement for collaborative development.

• CI/CD Tools: Experience with continuous integration and continuous deployment pipelines (e.g., Jenkins, GitLab CI, CircleCI) is likely used for automating build and deployment processes.

📝 Enhancement Note: The specified tools are standard for modern frontend development. The mention of Enzyme for testing and Webpack for build processes highlights the need for operational understanding of the development pipeline. Familiarity with CI/CD is a strong plus for a senior role aiming for efficient delivery.

👥 Team Culture & Values

Operations Values:

• Innovation: Driving new solutions and approaches, especially within the context of an AI-powered platform.

• Quality & Best Practices: Instilling high standards for software development, code reviews, and testing to ensure robust and maintainable code.

• Efficiency: Optimizing components for performance and streamlining development processes.

• Collaboration: Working effectively with cross-functional teams to deliver cohesive products.

• Continuous Learning: Engaging with new technologies, attending workshops, and sharing knowledge to stay at the forefront of development.

Collaboration Style:

• Remote-First: Expect a highly collaborative but distributed team environment, relying on digital communication tools.

• Cross-functional Integration: Actively participating in discussions with Product, UX, and Marketing to ensure the UI aligns with business goals and user needs.

• Knowledge Sharing: Encouraging open communication and sharing of best practices through internal sessions and documentation.

📝 Enhancement Note: Intellectsoft's culture appears to value innovation, quality, and continuous improvement, which are all critical for effective UI operations. The emphasis on collaboration in a remote setting suggests a need for strong communication and proactive engagement from team members.

⚡ Challenges & Growth Opportunities

Challenges:

• Maintaining Performance: Optimizing complex UIs for high performance across diverse devices and browsers, especially when integrating with AI-driven insights.

• Adapting to Evolving Technologies: Keeping pace with rapid changes in JavaScript frameworks, React ecosystem, and front-end tooling.

• Cross-functional Alignment: Ensuring seamless integration and clear communication between UI development and other departments (Product, UX, Backend).

• Remote Collaboration Management: Effectively contributing to and maintaining team cohesion and productivity in a fully remote setting.

Learning & Development Opportunities:

• Specialized Training: Access to Udemy courses and internal workshops to deepen expertise in areas like advanced React patterns, TypeScript, or performance engineering.

• Mentorship: Opportunities for guidance from senior engineers or tech leads, fostering career growth.

• Exposure to AI/ML: Working on an AI-powered platform provides unique exposure to cutting-edge technologies and their UI implications.

📝 Enhancement Note: The challenges presented are typical for senior roles in dynamic tech environments. The growth opportunities clearly indicate a commitment to employee development, particularly in specialized technical and leadership areas relevant to modern software operations.

💡 Interview Preparation

Strategy Questions:

• "Describe a complex UI challenge you faced and how you approached its resolution, focusing on the process and outcome." (Prepare a case study using React, state management, and performance optimization).

• "How do you ensure code quality and maintainability in a large React project, especially when working remotely?" (Discuss code reviews, testing strategies, documentation, and collaboration tools).

Company & Culture Questions:

• "What interests you about working with an AI-powered platform and Intellectsoft's client base?" (Research Intellectsoft's clients and AI initiatives).

• "How do you contribute to a positive and productive remote team environment?" (Emphasize communication, proactivity, and collaboration).

Portfolio Presentation Strategy:

• Structure Your Narrative: For each project, clearly state the problem, your role, the technical approach (highlighting React, Redux/Flux, JS/HTML/CSS), the challenges overcome, and the measurable results.

• Focus on Impact: Quantify your contributions whenever possible (e.g., "improved load times by 20%", "reduced user error rates by 15%").

• Showcase Operational Elements: Highlight your involvement in code reviews, testing, documentation, and architectural discussions.

• Be Ready for Deep Dives: Anticipate detailed questions about your code, architectural choices, and problem-solving methodologies.

📝 Enhancement Note: Interview preparation should focus on demonstrating not just technical prowess but also an understanding of development processes, collaboration, and the operational aspects of delivering high-quality software in a remote environment.

📌 Application Steps

To apply for this Senior UI Developer position:

• Submit your application through the provided link on jobs.workable.com.

• Tailor Your Resume: Highlight your 5+ years of ReactJS experience, proficiency in JavaScript, HTML, CSS, Redux/Flux, and any experience with TypeScript, Angular, or Vue.js. Quantify achievements where possible.

• Curate Your Portfolio: Select 2-3 key projects that best showcase your React development skills, responsive design capabilities, and any experience relevant to complex data visualization or AI-driven platforms. Ensure your portfolio demonstrates your understanding of the software development lifecycle, including testing and documentation.

• Prepare Your Narrative: Practice explaining your projects, focusing on your role, the technical challenges, the solutions you implemented (especially around UI operations and optimization), and the impact of your work.

• Research Intellectsoft: Understand their industry focus, client portfolio, and company values to articulate your interest and cultural fit during interviews.

⚠️ Important Notice: This enhanced job description includes AI-generated insights and operations industry-standard assumptions. All details should be verified directly with the hiring organization before making application decisions.