Senior Front End Developer Jobs in Manchester, NH

What We Do

We calm the confusion of IT by guiding the connection between people and technology. If a customer is looking for a better way to manage their warehouse inventory, equip their workforce, or secure their data, we make it happen. All it takes is finding the right combination of tech hardware, software, cloud solutions, and support services. That's what we do. We're the IT Department's IT Department.

Who We Are

Our team is made stronger by a multitude of backgrounds, experiences, and perspectives. It's what makes Connection unique-what drives us to innovate and create technology solutions that stand apart from the crowd. We'd love for you to be a part of that fabric, to share your ideas and experiences with a team that thrives on fresh thinking, creativity, and helping others.

Why You Should Join Us

You'll find supportive teammates and a rewarding career at Connection-plus great benefits. We take pride in supporting employees with a total rewards package that provides financial, emotional, and physical resources for you and your family.  Our compensation, 401k plans, medical insurance, and other benefits are progressive and competitive.  We value the importance of our employees' emotional wellbeing. To support employees, we provide free therapy visits, mental health coaching and tools, and meditation resources. You'll also enjoy a generous paid time off package that includes not only vacation and care time, but also Wellness and Volunteer Time Off days.

Applicants must be authorized to work for any employer in the U.S. We are unable to sponsor or take over sponsorship of an employment visa at this time.

Working under minimal supervision of the Manager, Web Development, referring only exceptional problems and issues for management review or approval, the Senior Front-End Developer is responsible for designing, developing, maintaining, and enhancing a modern web application using React, TypeScript, and related front-end technologies. This role independently leads complex development efforts, provides technical guidance, and collaborates with cross-functional teams to deliver scalable, high-quality user experiences. Responsibilities include application architecture, feature development, troubleshooting, production support, work planning, code reviews, technical documentation, and continuous improvement of front-end development practices. The Senior Front End Developer exercises sound judgment in resolving complex technical challenges and escalates only exceptional issues requiring management review or approval.

Design, develop, test, and implement features and functionality for modern web applications using React, TypeScript, and related front-end technologies. Collaborate with developers, architects, analysts, UX designers, QA Engineers, and business stakeholders to deliver high-quality software solutions that meet business requirements. Participate in application design and technical planning activities, contributing to architecture, component design, and implementation approaches. Translate business requirements and functional specifications into scalable, maintainable, and reusable software solutions. Leverage software development lifecycle (SDLC) best practices, including source control, code reviews, testing, and deployment processes. Diagnose, troubleshoot, and resolve application defects, performance issues, and production support requests. Develop and maintain technical documentation, including design specifications, implementation details, and support documentation. Ensure applications adhere to established coding standards, style guides, security requirements, policies, processes, and procedures. Contribute to continuous improvement efforts by evaluating and applying modern development tools, frameworks, and best practices. Performs all other duties or special projects as assigned.

Technical Competencies:

Strong experience developing modern web applications using React and TypeScript. Strong understanding of JavaScript (ES6+), HTML5, CSS3, and responsive web design principles. Experience with Material UI (MUI) or similar component libraries. Experience with modern front-end development tools and workflows, including Vite, npm, and Git. Experience consuming and integrating RESTful APIs. Experience developing forms, validation, and user input workflows. Understanding of application state management and asynchronous data patterns. Experience with Software Development Life Cycle (SDLC) methodologies, code reviews, testing practices, and source control. Experience working in Agile development environments.

Preferred Competencies:

Experience with TanStack libraries, including React Query, React Table, and React Virtual. Experience with React Hook Form and validation libraries. Experience with internationalization/localization frameworks. Experience building data-intensive applications, dashboards, reporting solutions, or eCommerce applications. Experience with advanced user experience patterns. Experience with modern front-end architecture and performance optimization techniques. Familiarity with server-side technologies such as .NET and PHP to support integration with front-end React applications. Experience designing and implementing user interfaces that seamlessly incorporate AI features, utilizing LLM APIs and prompt engineering to deliver intuitive, responsive, and highly personalized user experiences.

Professional Competencies: Strong analytical, problem-solving, and troubleshooting skills. Ability to manage multiple priorities and adapt to changing business needs. Self-motivated with the ability to work independently with minimal supervision. Strong attention to detail and commitment to delivering high-quality software. Effective verbal and written communication skills. Strong collaboration and interpersonal skills with the ability to work effectively across technical and business teams. Ability to quickly learn new technologies, tools, and business processes. Commitment to continuous learning and professional development. Demonstrated initiative, accountability, and a customer-focused mindset.