Java Software Developer jobs in Germany

We are looking for a Lead/Senior Frontend Software Engineer to join our cross‑functional product team. You will play a pivotal role in designing, developing, and optimizing user‑facing applications that are performant, scalable, and intuitive. You’ll work closely with product managers, designers, and backend engineers to bring seamless experiences to life.

Key Responsibilities:

• Architect, develop, and maintain advanced frontend features using modern frameworks, primarily React.
• Build modular, reusable components and libraries to accelerate development across teams.
• Optimize applications for maximum speed, accessibility, and scalability.
• Ensure code quality through code reviews, automated testing, and adherence to best practices.
• Collaborate with cross‑functional teams to define and deliver complete solutions. junior engineers and support the frontend engineering culture.
• Write comprehensive unit, integration, and end‑to‑end tests to ensure code quality and maintainability.

• 5+ years of professional experience building and maintaining modern frontend applications.
• Expert‑level proficiency in JavaScript, TypeScript, React, and modern frontend build tools (e.g., Webpack, Vite).
• Hands‑on experience designing and implementing Micro‑Frontend architectures, including communication and integration between independent modules.
• Deep understanding of HTML5, CSS3, responsive design principles, and accessibility (WCAG).
• Solid understanding of cross‑browser compatibility issues and solutions
• Experience working with RESTful and/or GraphQL APIs.
• Proficient with version control systems such as Git (GitLab, GitHub).
• Familiarity with Agile development methodologies, CI/CD pipelines, and automated testing (e.g., Jest, Testing Library, Cypress).
• Excellent communication skills, a collaborative mindset, and a strong sense of ownership

Bonus Qualifications

• Experience in full‑stack development, including SSR (e.g., Next.js) or backend Node.js services.
• Exposure to design systems and component libraries (e.g., Storybook).
• Understanding of UX research or design thinking methodologies.
• Interest or experience in Conversational UI/Voice interfaces.
• Experience in performance monitoring and web analytics

At Beroe X nnamu GmbH, we prioritize a balanced work‑life experience.

Here’s what we offer you:

• 4-Day Work Week & 30 Days Paid Vacation – More time to recharge
• Competitive Compensation – Fair salary and comprehensive benefits.
• Flexible Work Arrangements – Work the way that suits you. Professional Development – Access to training and certifications.
• Team Events – Bi‑annual company events and monthly lunch get‑togethers.
• Work Abroad Flexibility – Remote work from the EU or selected non‑EU countries for up to 8 weeks a year with travel insurance coverage

We operate on a hybrid model with offices in Berlin and Munich, offering a 32‑hour, 4‑day workweek.

This means:

• In‑Office Collaboration: Work from the office two days a week
• Manage Your Own Hours: Flexibility to work around your needs as long as team goals are met.

Our Culture We are committed to fostering a collaborative, innovative and inclusive work environment where everyone’s ideas matter. We know that diverse teams lead to better outcomes and welcome applicants from all backgrounds.

At Beroe x nnamu GmbH, we are committed to empowering procurement teams to make informed, strategic decisions that drive real impact. By integrating AI and game theory, our Software as a Service (SaaS) platform, nnamu.negotiations, delivers a groundbreaking approach to complex, yet autonomous negotiations.

nnamu.negotiations delivers additional total‑value‑of‑ownership savings efficiently and effectively for buyers with no prior knowledge of game theory required. By combining our world class proprietary AI with an unmatched, unique database of over EUR 400bn actual game theory project data we help clients uncover incremental value in their negotiations, driving outcomes that were previously out of reach.

Beroe x nnamu GmbH is now a Beroe, Inc. group entity. Beroe is a global leader in procurement intelligence. Beroe has been on procurement’s leading edge since the company’s founding in 2006, bringing a world of insights forward. The unique combination of Beroe’s expertise, AI tools, and vast amounts of reliable data enable organizations to make smarter, faster, better procurement decisions. Not tomorrow, not today, but now. Selected by ProcureTech as one of the “most pioneering Analytics, Data and Intelligence solutions in 2024”, Beroe helps thousands of organizations sift through the data noise, mitigate risk, face fewer surprises, and ultimately gain a competitive edge.

With nnamu’s cutting‑edge AI and Beroe’s trusted market intelligence, we are unlocking game‑changing possibilities for procurement teams worldwide.

The Challenge We are Solving

Despite the proven potential of game theory to enhance negotiation outcomes significantly – potentially unlocking an incremental USD 1 Trillion of value – its application in business negotiations remains rare, inconsistent, and hard to scale. This gap presents a vast opportunity but also a challenge that many companies have yet to overcome. Beroe x nnamu GmbH is pioneering the use of AI‑powered game theory to make complex negotiation strategies accessible, scalable, and incredibly effective for organizations worldwide.