Sr. UI -UX Software Engineer

📍 Job Overview

Job Title: Sr. UI/UX Software Engineer

Company: Ecolab

Location: Naperville, IL, United States

Job Type: FULL_TIME

Category: Software Engineering / UI/UX Development

Date Posted: April 24, 2026

Experience Level: 5-10 Years

Remote Status: On-site

🚀 Role Summary

• This role is central to the development of innovative web and mobile software applications for Ecolab's Institutional businesses, focusing on delivering enhanced customer value through cutting-edge UI/UX design and robust software engineering.

• The position requires hands-on experience in implementing Micro Front End architectures and deep expertise in UI development, particularly with the Flutter framework, ensuring a seamless and intuitive user experience across platforms.

• Candidates will be involved in all phases of the software development lifecycle, from design and coding to testing and deployment, with a strong emphasis on Agile methodologies like Scrum.

• This role offers a significant opportunity to contribute to the technical direction and implementation of critical customer-facing applications within a large, established enterprise in the sustainability and industrial solutions sector.

📝 Enhancement Note: While the job title is "Sr. UI/UX Software Engineer," the description heavily emphasizes software development and engineering skills, particularly with Flutter and related technologies. The "UX" aspect appears to be integrated into the UI development process rather than a dedicated UX research or design role. The focus is on building the user interface and experience through code.

📈 Primary Responsibilities

• Design, develop, and implement user interfaces and full-stack applications using Flutter for both web and mobile platforms, ensuring high performance and responsiveness.

• Write and maintain code in JavaScript, Angular, and leverage the Microsoft suite of technologies, including potential development with the .NET MAUI framework.

• Collaborate closely with peers and junior developers, participating actively in code reviews, providing constructive feedback, and mentoring team members to foster a high-performing engineering environment.

• Analyze business requirements and user stories, translate them into technical specifications, and provide accurate estimates for development efforts and deliverables, demonstrating a high degree of accountability.

• Create and maintain comprehensive technical documentation for software products, utilizing tools such as Visio, PowerPoint, and Word to clearly articulate system architecture, design decisions, and user guides.

• Actively participate in all Scrum ceremonies, including Sprint Planning and Estimation, Daily Stand-ups, Sprint Reviews, and Sprint Retrospectives, contributing to process improvement and team alignment.

• Troubleshoot, debug, and resolve technical issues in a timely manner, identifying root causes and implementing solutions to prevent recurring defects, ensuring application stability and reliability.

• Work closely with Quality Assurance (QA) teams to perform unit testing and ensure that developed modules meet functional and non-functional requirements before release.

• Integrate with various internal and external systems by consuming APIs, ensuring seamless data flow and functionality across different platforms.

• Contribute to the maintenance of a standard release plan, including adherence to code check-in processes and solution management best practices.

📝 Enhancement Note: The responsibilities clearly indicate a senior-level software engineering role with a strong focus on front-end development using Flutter and related technologies. The emphasis on Agile, collaboration, and technical documentation aligns with standard senior engineering practices. The mention of "Micro Front End Applications" suggests a need for architectural understanding in distributed UI systems.

🎓 Skills & Qualifications

Education:

Experience:

• A minimum of 5 years of experience working in an IT environment.

• At least 3 years of experience as a Senior Software Developer specifically focused on Front End Development.

• A cumulative of 5 years of experience as a software developer or senior developer.

• Demonstrated project experience in estimating, planning, and delivering complex projects with a high degree of accountability.

Required Skills:

• 5+ years of experience as a software developer using multiple of the following development languages and/or Frameworks: Flutter, .NET MAUI, Angular, client-side JavaScript, jQuery.

• 3+ years of dedicated experience in Front End Development.

• 2+ years of experience utilizing API testing tools such as Swagger, Postman, or Fiddler.

• 5+ years of experience using Integrated Development Environments (IDEs) like Microsoft Visual Studio 2019 (or higher) and/or Visual Studio Code.

• 2+ years of experience with Microsoft Azure DevOps for CI/CD pipelines and project management.

• 2+ years of experience consuming APIs and integrating with external services.

Preferred Skills:

• Strong analytical and problem-solving skills to effectively diagnose and resolve complex technical challenges.

• Experience working in a multi-technology environment, leveraging synergies across different platforms.

• Demonstrated experience developing cross-platform mobile solutions.

• Proficiency in a variety of software development methodologies, including Agile, Waterfall, and Scrum, with an understanding of their optimal use cases.

• Experience working in a methodical and structured manner, ensuring code quality and process adherence.

• Excellent presentation, written, and oral communication skills.

• Strong interpersonal skills to foster effective relationships with software vendors, outsourcing partners, and internal business and IT associates.

• Ability to perform effectively in a team-oriented environment, maintain a positive attitude, and achieve results with minimal supervision.

• Enthusiasm for learning new skills and technologies, coupled with a passion for knowledge sharing.

• Excellent organization skills to manage multiple tasks and priorities efficiently.

• Prior experience working with global development teams, understanding cross-cultural collaboration dynamics.

• Experience in IoT (Internet of Things) environments and developing related applications.

📝 Enhancement Note: The required experience levels are detailed and specific, particularly for front-end development and specific technologies like Flutter and .NET MAUI. The preferred skills highlight a desire for a well-rounded, adaptable, and collaborative senior engineer. The mention of "Micro Front End Applications" implies a need for understanding modular and scalable UI architectures.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Demonstrate significant contributions to the UI/UX development of at least two complex web or mobile applications, showcasing the candidate's role and impact.

• Provide examples of how you have improved user workflows, enhanced user engagement, or driven measurable efficiency gains through your UI/UX development efforts.

• Showcase your experience with implementing or contributing to Micro Front End architectures, detailing the challenges and solutions involved in creating modular and scalable user interfaces.

Process Documentation:

• Prepare to discuss your approach to developing and documenting front-end code, including coding standards, version control strategies (e.g., Git workflows), and build processes.

• Be ready to articulate how you approach unit testing and integration testing for UI components, ensuring code quality and robustness.

• Detail your experience with Agile methodologies, specifically Scrum, including participation in ceremonies, sprint planning, and backlog refinement from a development perspective.

• Be prepared to explain your process for troubleshooting and resolving defects, including root cause analysis and communication protocols.

📝 Enhancement Note: For a senior UI/UX Software Engineer role, a portfolio is crucial. It should not only showcase visual design but also the technical implementation details, the thought process behind UI decisions, and the impact on user experience and business goals. A strong emphasis on Flutter and Micro Front Ends is expected.

💵 Compensation & Benefits

Salary Range:

• The annual compensation range for this position is $101,400.00 - $152,100.00 USD.

Benefits:

• Ecolab offers a comprehensive benefits package designed to meet the needs of its associates and their families.

• Benefits include market-competitive offerings, details of which can be found on the Ecolab Careers website.

Working Hours:

• The standard working hours for this role are approximately 40 hours per week, aligning with full-time employment.

• While the role is on-site, the company culture may allow for some flexibility in scheduling, which could be discussed during the interview process.

📝 Enhancement Note: The salary range is provided and is competitive for a Sr. UI/UX Software Engineer role in the Naperville, IL area, considering the experience requirements. The benefits are described as comprehensive and market-competitive, which is typical for a large corporation like Ecolab.

🎯 Team & Company Context

🏢 Company Culture

Industry:

• Ecolab operates in the Environmental & Sustainability, Technology, and Software sectors, providing solutions and services primarily for the Institutional businesses. The company is a global leader in water, hygiene, and infection prevention solutions and services, focusing on making the world cleaner, safer, and healthier.

Company Size:

• Ecolab is a large enterprise organization, indicated by its significant employee count and global presence. This size implies structured processes, established career paths, and opportunities for cross-functional collaboration within a vast network of departments and specialists.

Founded:

Team Structure:

• The Sr. UI/UX Software Engineer will likely be part of a broader software engineering or digital solutions team, potentially within the Institutional business unit.

• The team structure is expected to be collaborative, with a mix of senior and junior developers, QA engineers, product managers, and potentially UX designers or researchers.

Methodology:

• The team likely employs Agile methodologies, with a strong emphasis on Scrum ceremonies, as mentioned in the responsibilities. This involves iterative development, continuous feedback, and adaptive planning.

• Emphasis will be placed on data-driven development, leveraging insights from user interactions and business requirements to inform design and implementation decisions.

Company Website:

• https://www.ecolab.com/

📝 Enhancement Note: Ecolab's strong presence in sustainability and industrial solutions provides a unique context for software development, aiming to solve real-world problems for their diverse customer base. The company's size and history suggest a stable environment with established procedures.

📈 Career & Growth Analysis

Operations Career Level:

• This is a Senior-level position, indicating a requirement for significant independent contribution, technical leadership, and the ability to mentor junior team members. The role involves complex problem-solving and the application of advanced development skills.

Reporting Structure:

• The Sr. UI/UX Software Engineer will likely report to a Software Engineering Manager or a Team Lead within the Digital Solutions or IT department for the Institutional business.

Operations Impact:

• The software developed directly impacts Ecolab's ability to deliver value to its institutional customers, enhancing operational efficiency, safety, and sustainability.

Growth Opportunities:

• Technical Specialization: Deepen expertise in Flutter, Micro Front Ends, or explore adjacent technologies like .NET MAUI for cross-platform development.

• Leadership Development: Transition into roles such as Tech Lead, Architect, or Engineering Manager by demonstrating technical leadership, mentorship capabilities, and strategic thinking.

• Cross-Functional Exposure: Gain experience in product management, business analysis, or other areas by collaborating with different departments and understanding broader business objectives.

• Industry Expertise: Develop specialized knowledge within Ecolab's key industries (e.g., hospitality, healthcare, food safety) and how technology supports their unique operational challenges.

📝 Enhancement Note: The senior level implies a path towards technical leadership or management. Ecolab's focus on sustainability and global operations offers unique opportunities for impact and specialized career growth within the company.

🌐 Work Environment

Office Type:

• This is an on-site role, meaning the engineer will work from Ecolab's Naperville, IL office.

Office Location(s):

Workspace Context:

• The workspace will likely be equipped with standard office amenities and technology, including high-speed internet, comfortable workstations, and access to necessary software and development tools.

• Opportunities for collaboration with colleagues will be readily available through team meetings, project discussions, and informal interactions within the office setting.

Work Schedule:

• The standard work schedule is approximately 40 hours per week. While on-site, there may be some flexibility in daily start and end times, subject to team and management approval, to accommodate personal needs while ensuring business continuity and team coordination.

📝 Enhancement Note: The on-site requirement in Naperville suggests a traditional corporate office environment. The focus on collaboration within this setting is a key aspect for a senior engineer who will likely mentor and work closely with other team members.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: A recruiter or hiring manager will review your application and resume. Be prepared to briefly articulate your key experience with

Flutter, UI/UX development, and relevant technologies.

• Technical Interview(s): Expect one or more technical interviews. These may involve:

  • Coding Challenges: Live coding exercises focusing on algorithm implementation, data structures, and front-end development principles, potentially using Flutter.
  • System Design: Discussions on how you would design or architect a particular feature or application, with a focus on scalability, performance, and maintainability.
  • Technical Q&A: In-depth questions about your experience with specific technologies (Flutter, Angular, JavaScript, APIs, Azure DevOps) and software development methodologies.

• Portfolio Review/Discussion: You may be asked to present and discuss specific projects from your portfolio, detailing your role, technical challenges, solutions implemented, and the impact of your work.

• Behavioral/Cultural Fit Interview: Questions assessing your problem-solving approach, teamwork, communication skills, and alignment with Ecolab's values and culture.

• Final Interview: Potentially with senior leadership to discuss overall fit and strategic alignment.

Portfolio Review Tips:

• Focus on Impact: For each project, clearly articulate the problem you solved, your specific contributions, the technologies used, and the measurable results (e.g., improved user satisfaction, increased conversion rates, reduced load times).

• Showcase Flutter & Micro Front Ends: Highlight projects where you extensively used Flutter or contributed to Micro Front End implementations. Detail the architectural decisions and challenges overcome.

• Code Samples: Be prepared to share relevant code snippets (if permissible) or detailed descriptions of your coding practices, including testing strategies and code quality considerations.

• Technical Depth: Be ready to discuss the "why" behind your technical choices, demonstrating a deep understanding of trade-offs and best practices.

• Presentation Clarity: Organize your portfolio logically and practice presenting your projects concisely and effectively. Tailor your presentation to the specific requirements of this role.

Challenge Preparation:

• Coding Fundamentals: Brush up on data structures, algorithms, and object-oriented programming principles, especially as they apply to front-end development. Practice coding problems on platforms like LeetCode or HackerRank, focusing on medium-level challenges.

• Flutter Proficiency: Review Flutter widgets, state management (e.g., Provider, BLoC), asynchronous programming, and common UI patterns. Understand its cross-platform capabilities.

• API Interaction: Be prepared to discuss how to consume RESTful APIs, handle responses, and manage errors in a front-end context.

• Scrum & Agile: Understand the roles, events, and artifacts of Scrum and how a developer contributes to each.

• Scenario-Based Questions: Practice answering questions about how you would approach specific development scenarios, troubleshoot issues, or collaborate with team members.

📝 Enhancement Note: The interview process is likely to be rigorous, focusing on both technical depth in Flutter and UI/UX development, as well as the candidate's ability to work within an Agile framework and contribute to a large enterprise. A well-prepared portfolio is essential.

🛠 Tools & Technology Stack

Primary Tools:

• Flutter: The core framework for UI development, used for building cross-platform web and mobile applications. Expect deep involvement in Flutter development, widget creation, state management, and performance optimization.

• Angular: Required for web application development. Proficiency in Angular, including its component-based architecture and TypeScript, will be necessary.

• JavaScript (Client-side) & jQuery: Foundational web technologies; understanding their application in modern front-end development and historical context is beneficial.

• Microsoft .NET MAUI: A preferred skill for mobile application development, indicating a potential for cross-platform development beyond Flutter.

Analytics & Reporting:

• Azure DevOps: Essential for CI/CD pipelines, version control (Git), work item tracking, and overall project management within the Microsoft ecosystem.

• Swagger/OpenAPI: Used for defining, documenting, and consuming APIs. Experience with Swagger for API specification and interaction is required.

• Postman/Fiddler: Tools for API testing, debugging, and inspection, crucial for validating API integrations.

CRM & Automation:

• While not explicitly mentioned as primary tools for this role, understanding how front-end applications interact with backend systems and potentially CRM platforms (like Salesforce, though not specified) is valuable. The focus is on API consumption, suggesting integration with various backend services.

• Visual Studio / Visual Studio Code: Integrated Development Environments (IDEs) for writing, debugging, and managing code across different platforms and languages.

📝 Enhancement Note: The technology stack is heavily weighted towards front-end development with a strong emphasis on Flutter and Angular, integrated within the Microsoft Azure ecosystem. Experience with API tools is critical for understanding how these applications connect to backend services.

👥 Team Culture & Values

Operations Values:

• Customer Focus: Developing software that directly enhances the value and experience for Ecolab's institutional customers, aligning with the company's mission.

• Innovation: Embracing new technologies and methodologies (like Micro Front Ends and Flutter) to create leading-edge software solutions.

• Collaboration: Working effectively within a team, sharing knowledge, and supporting peers to achieve common goals.

• Integrity & Accountability: Taking ownership of work, delivering high-quality results, and acting with honesty and transparency.

• Sustainability & Safety: Contributing to solutions that promote cleaner, safer, and healthier environments, reflecting Ecolab's core purpose.

Collaboration Style:

• Agile & Iterative: The team operates using Agile principles, with regular feedback loops and adaptive planning. Collaboration occurs daily through stand-ups and sprint activities.

• Cross-Functional: Expect to work closely with product managers, business analysts, QA engineers, and potentially other development teams to ensure alignment and successful project delivery.

• Knowledge Sharing: A culture that encourages sharing best practices, code reviews, and learning from each other's experiences, particularly with senior members mentoring junior ones.

📝 Enhancement Note: Ecolab's values, particularly around sustainability and customer focus, are likely to be integrated into the team's operational mindset. The emphasis on Agile and cross-functional collaboration is standard for modern software development teams.

⚡ Challenges & Growth Opportunities

Challenges:

• Legacy System Integration: Potentially integrating modern front-end applications (Flutter, Angular) with existing or legacy backend systems, requiring careful API design and management.

• Cross-Platform Consistency: Ensuring a consistent and high-quality user experience across web and mobile platforms, especially when using different frameworks or adapting designs.

• Rapid Technological Evolution: Staying current with the fast-paced changes in front-end technologies, frameworks (like Flutter), and development methodologies.

• Global Collaboration: Working with potentially distributed global teams, which requires adapting to different time zones, communication styles, and cultural nuances.

Learning & Development Opportunities:

• Advanced Flutter/Dart Training: Opportunities to deepen expertise in Flutter, Dart, and related architectural patterns.

• Micro Front End Architecture: Gaining hands-on experience and contributing to the design and implementation of Micro Front End systems.

• Cross-Technology Exposure: Working with .NET MAUI and other Microsoft technologies to broaden skill sets.

• Industry-Specific Knowledge: Developing a strong understanding of the institutional market, sustainability, and hygiene solutions, and how technology supports these domains.

• Leadership Mentorship: Opportunities to mentor junior engineers and potentially take on technical leadership responsibilities.

📝 Enhancement Note: The challenges highlight common issues in enterprise software development, while the growth opportunities align with staying relevant and advancing within specialized areas of front-end engineering.

💡 Interview Preparation

Strategy Questions:

• "Describe a complex UI you've built with Flutter. What were the main challenges, and how did you overcome them?" (Focus on technical problem-solving, architectural decisions, and performance optimization.)

• "How would you approach designing a Micro Front End architecture for a large-scale application? What are the key considerations?" (Demonstrate understanding of modularity, communication, and deployment strategies.)

• "Walk me through your process for troubleshooting a performance issue in a Flutter application. What tools and techniques would you use?" (Showcase debugging skills and systematic problem-solving.)

Company & Culture Questions:

• "What interests you about Ecolab and our mission in sustainability and hygiene?" (Research Ecolab's mission, values, and recent initiatives.)

• "How do you approach collaboration with business stakeholders and non-technical team members?" (Highlight communication skills, empathy, and ability to translate technical concepts.)

• "Describe a time you had to adapt to a new technology or development methodology. How did you approach it?" (Showcase learning agility and a proactive attitude.)

Portfolio Presentation Strategy:

• Structure Your Narrative: For each project, clearly state the business problem, your specific role and contributions, the technologies used (emphasize Flutter, Angular), the technical challenges, your solutions, and the impact/results.

• Highlight Key Skills: Ensure your presentation explicitly demonstrates your expertise in Flutter, UI/UX principles, API consumption, and any experience with Micro Front Ends or .NET MAUI.

• Technical Depth: Be prepared to answer detailed questions about your code, architectural decisions, and the trade-offs you made.

• Visual Aids: Use screenshots, diagrams, or live demos (if possible and appropriate) to illustrate your work effectively.

• Conciseness: Practice delivering your presentations within the allotted time, focusing on the most impactful aspects of your projects.

📝 Enhancement Note: Interview preparation should focus on demonstrating deep technical expertise in Flutter and UI/UX, a strong understanding of Agile methodologies, and the ability to articulate contributions and impact effectively, especially concerning Micro Front End concepts.

📌 Application Steps

To apply for this Sr. UI/UX Software Engineer position:

• Submit your application through the provided link on the Ecolab careers portal.

• Tailor Your Resume: Customize your resume to highlight your experience with Flutter, UI/UX development, Micro Front Ends, JavaScript, Angular, and relevant tools like Azure DevOps, Swagger, and Postman. Quantify your achievements whenever possible.

• Curate Your Portfolio: Select 2-3 of your strongest projects that best showcase your skills in Flutter, UI development, and any experience with Micro Front Ends or complex web/mobile applications. Prepare to discuss the technical challenges and your solutions.

• Prepare for Technical Interviews: Review fundamental data structures, algorithms, and object-oriented programming concepts. Refresh your knowledge of Flutter, Dart, and front-end best practices. Practice coding problems and system design scenarios.

• Research Ecolab: Understand Ecolab's mission, values, and its role in sustainability and hygiene solutions. Prepare to discuss why you are interested in working for Ecolab and this specific role.

⚠️ 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.