Freelance Frontend Javascript Developer Jobs in Minnesota

RFA Engineering (www.rfamec.com) is an engineering service provider dedicated to delivering our clients with timely engineering support and expertise. We are seeking a Senior Front End Software Engineer to become an integral part of our software engineering team. The selected candidate will work with an experienced, collaborative engineering staff using modern development tools and processes to deliver high‑quality, user‑focused software solutions. This position supports advanced, business‑critical applications and will contribute to the design and development of polished, high‑impact user interfaces that support complex workflows.

Senior Front-End Software Engineer

As a Senior Front-End Software Engineer, you will play a key role in designing, building, and delivering intuitive, performant, and scalable user interfaces. You will collaborate closely with product, design, QA, and back‑end engineering teams to translate product vision and requirements into high‑quality, production‑ready software. Your work will emphasize clean, maintainable front‑end code, strong UX principles, accessibility, and performance best practices.

Responsibilities

• Consistently write bug‑free, well‑tested, and maintainable front‑end code using React, TypeScript, JavaScript, and Node.js, taking full ownership of the quality and reliability of assigned features
• Design, develop, and maintain robust, scalable front‑end features within a fast‑paced, collaborative development environment
• Build prototypes and translate product and customer requirements into elegant, user‑friendly solutions with a strong focus on UX, accessibility, and responsive design
• Optimize application performance through refactoring, tuning, and usability improvements, leveraging data and metrics to guide technical decisions
• Support the rollout of new features and enhancements by integrating insights from user behavior, system monitoring, and product feedback
• Collaborate closely with QA to ensure cohesive, high‑quality, and usable solutions are delivered across the full product lifecycle
• Evaluate, test, and recommend new tools, frameworks, and technologies to improve scalability, performance, and maintainability
• Actively participate in agile development processes, including sprint planning, daily standups, retrospectives, and continuous delivery activities
• Produce clear, effective documentation to support maintainability, onboarding, and internal knowledge sharing
• Implement and maintain unit tests and participate in peer code reviews to ensure consistent quality and adherence to best practices
• Collaborate across engineering, product, and design teams to deliver end‑to‑end functionality aligned with business and customer needs
• Manage Git‑based workflows, including branching strategies and merge conflict resolution
• Participate in CI/CD pipelines and deployment processes to ensure smooth, reliable releases across development, test, and production environments
• Support and maintain existing software functionality, contributing to shared internal resources and documentation
• Stay current with modern front‑end frameworks, libraries, and development practices and contribute to continuous improvement efforts

• 8+ years of hands‑on software development experience, with a strong emphasis on building and maintaining scalable, user‑centric web applications
• Bachelor’s or Master’s degree in Computer Science or a related field, or equivalent professional experience
• Proven experience delivering production‑ready front‑end solutions using React, JavaScript, TypeScript, and Node.js
• Strong foundation in front‑end architecture, including building reusable component libraries, optimizing performance, and implementing accessible, responsive interfaces
• Demonstrated ability to deliver features end‑to‑end, from early prototyping through production deployment, with a strong UX and product mindset
• Solid experience with performance tuning, refactoring, unit testing, and front‑end automation
• Comfort analyzing system‑level feedback, user behavior, and performance metrics to guide iterative development
• Strong commitment to writing clean, maintainable, and well‑documented code and contributing positively to code reviews and team collaboration
• Hands‑on experience using Git in multi‑developer, collaborative environments
• Familiarity with modern CI/CD pipelines and front‑end or full‑stack deployment workflows
• Experience working in AWS environments, including services such as EC2, S3, VPC, Elasticsearch, and Kinesis
• Proven ability to solve complex technical and business problems across evolving software architectures
• Ability to work effectively both independently and collaboratively in fast‑paced, deadline‑driven environments

Pay Range: $100,000-$160,000 Commensurate with experience

VISA Sponsorship is NOT available for this position.

About RFA Engineering

RFA Engineering has provided product development and engineering services to industry leading customers since 1943. Our primary focus is the development of off highway equipment including agricultural, construction, mining, recreational, industrial, and special machines. Our work includes concept development, product design, documentation, problem-solving, simulation, optimization, and testing of components, systems and complete machines. Our engineering staff is located at our Engineering Center in Minneapolis, branch office in Dubuque, IA, and at numerous customer sites throughout the U.S.
Competitive Benefits

• Health and Dental Insurance
• Health Savings Account
• TelaDoc: Virtual Health Care
• Vision Insurance
• Company Paid / Supplemental Life Insurance
• Company Paid Long-Term Disability
• Supplemental Short-Term Disability
• Retirement Savings Account (Traditional 401k & Roth 401k)
• Flexible Spending Plan Dependent Care
• Bonus Plan (Exempt Employees Only)
• Paid Time Off (PTO)
• Paid Holidays
• Bereavement Leave
• Employee Assistance Programs (EAP)
• Education Assistance

Equal Opportunity and Veteran Friendly