Senior Full Stack Engineer (all genders)

<span>As a Senior Full Stack Engineer at flaconi, you’ll play a key role in shaping the future of our Product Detail Pages (PDP) — one of the most visited and business-critical parts of our e-commerce platform. You’ll help build a scalable, high-performance architecture that delivers a seamless and inspiring shopping experience for millions of customers. </span><br/><span>In this role, you’ll collaborate closely with cross-functional experts from Product, Design, Data, and Engineering to tackle complex technical challenges such as real-time pricing, personalization, SEO optimization, and performance at scale. Your work will directly influence how users engage with flaconi’s products every day, ensuring our PDP continues to evolve as a fast, reliable, and conversion-driven experience</span> <h3>What We Offer</h3> <ul> <li><b>Our employees matter to us</b>: We offer you a permanent contract and cover the costs for your BVG or Deutschland ticket.</li><li><b>Work-life balance</b>: 29 vacation days, flexible working hours, up to three days of working from home per week, and in specific cases, the option to work 100 % remotely within Germany; the possibility of a paid sabbatical.</li><li><b>flaconi Academy</b>: Actively shape your own career path by taking advantage of our internal and external training opportunities.</li><li><b>We care about your well being</b>: We want to support you also during difficult times. For this, we offer you and your close relatives counseling sessions with mental health professionals.</li><li><b>flaconi fitness</b>: a wide range of sports options &amp; discounts on memberships.</li><li><b>Family first:</b> Our “emergency-daycare” is there for you in out-of-the-ordinary situations to look after your child on site at our office.</li><li><b>Thinking about tomorrow together</b>: flaconi subsidizes your savings contribution to the company pension scheme with an additional 20%.</li><li><b>A comfortable working space with everything you need</b>: High end technical equipment, fruits and drinks, no dress code and dogs are welcome in our office!</li><li><b>Other perks</b>: Great discounts in our online shop as well with our partner companies, cool team events &amp; company parties! </li><li>Check out all benefits <a href="https://www.flaconi.de/karriere/culture/">HERE</a>.</li></ul> <h3>Your role</h3> <ul> <li>Design, develop, and maintain scalable full-stack applications using modern technologies such as Node.js, React, TypeScript, and <a href="http://Next.js" rel="noopener noreferrer">Next.js</a>.</li><li>Architect and implement microservices and APIs that are secure, efficient, and maintainable.</li><li>Collaborate with Product, Design, QA, and DevOps teams to translate business requirements into technical solutions that deliver customer value.</li><li>Ensure code quality and maintainability through best practices such as automated testing, code reviews, CI/CD, and clean architecture.</li><li>Contribute to technical strategy and architectural decisions, helping shape the future of the PDP platform.</li><li>Mentor and support other engineers, fostering collaboration, continuous learning, and technical excellence.</li><li>Monitor and optimize system performance to ensure reliability, scalability, and a smooth user experience across platforms.</li><li>Stay current with emerging technologies, introducing tools and frameworks that improve productivity, performance, and developer experience.</li><li>Collaborate with DevOps and platform teams to enhance deployment pipelines, infrastructure automation, and observability.</li><li>Work with monitoring and analytics tools such as New Relic (for performance and observability), and integrate with partner solutions including Criteo (sponsored products) and Yotpo (customer reviews).</li></ul> <h3>Your profile</h3> <ul> <li>5+ years of full-stack development experience with Node.js, React, TypeScript, and Next.js as core technologies.</li><li>Proven experience designing, building, and evolving large-scale web applications in a production environment.</li><li>Strong understanding of APIs, microservices, and event-driven architectures, with experience designing for scalability and maintainability.</li><li>2+ years of hands-on experience with AWS services (Lambda, EventBridge, SQS, SNS, API Gateway); familiarity with the Serverless Framework is a plus.</li><li>Experience with Infrastructure as Code (IaC); Terraform preferred.</li><li>Hands-on experience with at least one SQL and one NoSQL database (e.g., PostgreSQL, DynamoDB, Redis).</li><li>Demonstrated ability to mentor engineers and advocate for best practices such as CI/CD, TDD/BDD, Domain-Driven Design, and observability.</li><li>Strong communication skills in English, with a collaborative and solution-oriented mindset.</li><li>Practical experience working in Agile environments (Scrum or Kanban) delivering customer-facing products.</li>Nice to have <li>Previous experience in e-commerce, especially with