Senior Full-Stack Developer — React / Node.js (m/w/d)

About Technology&Strategy

Technology & Strategy is a European consulting firm with more than 3,500 employees, operating in France, Germany and internationally. T&S has developed significantly in recent years, particularly in the areas of digital transformation, embedded systems and operational excellence consulting. We are committed to working with you today to develop smarter, safer and more environmentally friendly solutions for the challenges of tomorrow. With us, you can expect numerous career opportunities, a great working environment and recognized experts. That's why we invite you to join our great team.

Your tasks:

• Build slick, resilient UIs in React + TS; nail state management; make offline/poor-network scenarios feel boringly reliable.
• Design clean contracts and implement lightweight services that keep data consistent, secure, and easy to evolve.
• Partner with design and product to simplify complex workflows.
• Raise the bar via reviews, docs, tests, and knowledge-sharing.

Your profile:

• React & TypeScript: 5+ years shipping robust, scalable web apps using React; strong component architecture and performance chops.
• Node.js & Backend Knowledge: 5+ years using Node.js; comfortable designing and evolving APIs (GraphQL or REST) and modeling data in relational DBs (e.g., PostgreSQL & SQLite).
• State management: Pragmatic experience with tools like Zustand/Redux, Swift/Kotlin expertise

Nice-to-Have:

• Offline-first: You know how to keep apps usable with flaky or no connectivity (service workers, caching strategies, sensible fallbacks)
• Experience with local-first data or sync patterns and real-time UI updates
• GraphQL experience
• An aesthetic eye for UI design (colors, shapes, spacing)
• Exposure to cloud + containers (AWS, Docker, CI/CD)
• UI foundations (design tokens/Storybook), accessibility, and UX issues

Our working environment:

• Happy At Work certification 2023 (and since 2019)
• We value inclusion and diversity through our CSR policy (patronage charter, diversity charter, sports courses, wellness workshops and many other projects...).

What we offer:

• Flexible working hours, home office option, 30 days' vacation and special leave days for special occasions
• Permanent employment contract
• Modern office space + IT equipment + kitchen, coffee machine and drinks for free
• Individual career program with long-term prospects through regular follow-up discussions with HR and managers
• Numerous training opportunities, paid language courses & a digital T&S learning platform
• Monthly events with your own team
• Flat hierarchies and a DU culture
• The possibility of a company car
• Company-wide relocation possible if desired

Our jobs are suitable for people with disabilities. T&S Group promotes diversity and equality in the workplace. All suitable candidates are considered on equal terms.