Senior JavaScript (React) Developer

Vistex Inc.; Walldorf; Hybrid; EUR 90.000 - 130.000; Vollzeit

Zusammenfassung

Vistex Inc. is seeking a Functional Expert to drive frontend architecture and collaborate with product, UX/UI, and QA to deliver seamless end-to-end user experiences.

The role focuses on designing and scaling complex applications, ensuring performance, accessibility, and maintainability across the UI domain. With 6 years of experience, you will own API contracts with backend teams, mentor peers, and contribute to long-term technical strategy while leveraging modern frontend tooling and cloud

Qualifikationen

• 6 years of experience in designing and building RESTful APIs, microservices, and backend services.
• Strong state management and data fetching with React Query, Redux Toolkit, and Entity Framework.
• Solid understanding of Clean Architecture, SOLID, OOP, and DDD.

Aufgaben

• Designing and scaling complex frontend applications using modern tech stack.
• Lead technical analysis and solution design for major features within the UI domain.
• Own frontend quality, performance, accessibility, and maintainability from development to production.
• Collaborate with backend teams to define API contracts and integrate services via REST and real-time patterns.
• Provide architectural direction and resolve complex technical challenges for the team.
• Coach and mentor mid-level and junior developers through code reviews and pairing.

Kenntnisse

Functional Expert

Team Player

Dedicated

Ability to Make an Impact

Excellent command of English

Ausbildung

Bachelor's or higher in Information Technology or related field

Tools

Docker-based deployments

RESTful APIs

Microservices

React Query

Redux Toolkit

Entity Framework

CSS/SCSS

WCAG accessibility

Git

CI/CD

Azure

AWS

Frontend tooling (Vite, React Router)

Jobbeschreibung

Vistex is a global enterprise software and services company that helps businesses take control of their mission-critical processes. With a multitude of programs covering pricing, trade, royalties and incentives, it can be complicated to see where all the money is flowing, let alone how much difference it makes to the topline and the bottom line. With Vistex, business stakeholders can see the numbers, see what really works, and see what to do next – so they can make sure every dollar spent or earned is really driving growth, and not just additional costs. The world’s leading enterprises across a spectrum of industries rely on Vistex every day to propel their businesses.

• designing and scaling complex applications (using TypeScript, React, React Query, Redux, Vite, React Router), defining the evolution of frontend architecture, state management, and data-fetching strategies
• lead technical analysis and solution design for major features, driving improvements in coding standards and engineering practices across the UI domain
• owning the quality, performance, accessibility, and maintainability of frontend solutions, ensuring operational stability from development to production
• collaborating with backend teams to define API contracts and integrating services using REST, authentication, and real-time communication patterns
• resolving complex, ambiguous technical challenges across components and providing clear architectural direction for the team
• coaching and mentoring mid-level and junior developers through structured feedback, pairing, and leading high-standard code reviews.
• partnering with Product, UX/UI, and QA to translate requirements into seamless end-to-end user experiences.
• driving tooling, testing, and CI/CD improvements to enhance deployment processes and team productivity
• contributing to long-term technical strategy, shared component libraries, and design system evolution

The Vistex platform helps businesses finally get control of all their different promotions, rebates, SPAs, discounts, and other incentives. With so many programs across so many partner relationships, it can be impossible to see where all the money is going, let alone how much difference it’s actually making to revenue. With Vistex, business leaders can see the numbers, see what really works, and see what to do next – so they can make sure every dollar they spend really is driving more growth, not just more costs. It’s why global enterprises ranging from Coca-Cola to Sony to Grainger rely on Vistex every day. Vistex | Now it all adds up.™

Functional Expert

Considered a thought leader on a subject

Team Player

Works well as a member of a group

Dedicated

Devoted to a task or purpose with loyalty or integrity

Ability to Make an Impact

Inspired to perform well by the ability to contribute to the success of a project or the organization

Education

Bachelors or better in Information Technology or related field.

Experience

6 years:

• Proven ability to design and build RESTful APIs, microservices, and complex backend services with practical experience in Docker-based deployments
• Advanced state management and data fetching using React Query, Redux Toolkit, and Entity Framework
• Solid understanding of Clean Architecture, SOLID principles, OOP, and Domain-Driven Design (DDD)
• Proficiency in modern frontend styling and standards, including CSS/SCSS, responsive design, and WCAG accessibility
• Proficiency with Git, CI/CD pipelines, and Agile/Scrum methodologies
• Good knowledge of cloud platforms and hands-on experience with Azure and/or AWS
• Strong analytical, problem-solving, and technical communication skills
• Excellent command of English, both written and spoken