Description Back End Web Developer - Integration payment systems or payment providers Location: Wisconsin (Onsite or Remote for Wisconsin-based candidates) Contract Type: Contract-to-permanent Are you a talented Back End Web Developer looking to work on critical integration projects? We have an exciting opportunity with a top-tier client in Wisconsin. This role involves backend development with a focus on integrating payment systems and providers. If you thrive in collaborative environments and have a passion for delivering high-quality code, we’d love to hear from you! Key Responsibilities Develop and maintain backend systems for integration projects. Collaborate daily with tech leads, developers, product owners, QA, and coordinators via Slack. Work closely with cross-functional teams to ensure seamless integration of payment systems. Write clean, scalable, and efficient code using Node.js, JavaScript, and TypeScript. Must-Have Skills Node.js: Advanced experience in backend development. JavaScript: Strong proficiency in building dynamic and scalable web applications. TypeScript: Practical experience with typing and object-oriented programming. Integration Development: Expertise in integrating payment systems and/or payment providers. Qualifications 5+ years of backend development experience. Proven track record of successful integration projects, particularly in the payment systems domain. Strong problem-solving skills and ability to work in a collaborative team environment. Excellent communication skills, both written and verbal. Why Join This Team? Opportunity to contribute to critical projects with a significant impact. Collaborative work environment with daily interaction via Slack. Potential for long-term growth and permanent with the client. How to Apply: If you meet the qualifications and are excited about this opportunity, please send your updated resume and a brief cover letter detailing your experience with payment system integration and backend development. Requirements • Minimum of 5 years of experience in a similar role with payment systems or provider integration. • Proficient in backend development and able to demonstrate a strong understanding of the principles involved. • Experience with Agile Scrum methodology and able to work effectively within this framework. • Possess strong skills in API development, with the ability to create and manage robust and secure APIs. • Proficient in CSS, being able to effectively style web applications to meet user requirements. • Solid understanding and experience with Node.js, able to create server-side web applications. • Strong skills in JavaScript, including understanding of its nuances and ability to write efficient and scalable code. • Familiarity with JavaScript Frameworks, able to leverage them to build user-friendly applications. • Proficient in Typescript, able to develop robust, typed JavaScript applications. • Experience in application integration, able to connect different software applications to work as a coordinated whole. • Familiarity with party integrations and technology integrations, able to integrate third-party services into applications. • Experience with third-party integrations, able to connect external services to extend the functionality of applications. Technology Doesn't Change the World, People Do.® Robert Half is the world’s first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles. Robert Half works to put you in the best position to succeed. We provide access to top jobs, competitive compensation and benefits, and free online training. Stay on top of every opportunity - whenever you choose - even on the go. Download the Robert Half app (https://www.roberthalf.com/us/en/mobile-app) and get 1-tap apply, notifications of AI-matched jobs, and much more. All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan. Visit roberthalf.gobenefits.net for more information. © 2025 Robert Half. An Equal Opportunity Employer. M/F/Disability/Veterans. By clicking “Apply Now,” you’re agreeing to Robert Half’s Terms of Use (https://www.roberthalf.com/us/en/terms) .