Platform Engineer (m/w/d)

PLATFORM ENGINEER (M/W/D) PERMANENT EMPLOYEE, FULL-TIME · BERLIN (HYBRID)  THE IMPACT YOU WILL MAKE From socks, and petfood, to cosmetics, charles is helping countless brands reach their loyal customers every day, one conversation at a time. As a Platform Engineer at charles, you’ll help drive our product and infrastructure forward, enabling us to revolutionize conversational commerce. You’re a generalist with a passion for infrastructure and operations. You’ll work closely with the other Engineers to build scalable, high-performing systems, while improving system architecture, resolving tech debt, and ensuring seamless user experiences. Your contributions will result in reliable, data-driven solutions that support millions of users and push the boundaries of messaging-driven commerce. THIS IS WHAT YOU WILL BE DOING You'll build and operate our internal developer platform: the core services, APIs, and infrastructure that every product team builds on top of. That means writing software, not just configuring it, and standing up infrastructure that holds up under real production load. * You will be a part of a team that designs, develops, and operates the core services, APIs, and infrastructure that every product team builds on top of. Examples: building a billing API, maintaining Kubernetes operators, building an authentication broker, optimizing performance in our core monolith, and improving security in our link shortening service. * You will regularly partner with product teams to investigate issues, learn their use cases, and ship platform changes that hold up in production. * You'll join our on-call rotation as part of our "you build it, you run it" philosophy. * You'll have real room to drive cost and reliability initiatives that have measurable, company-wide impact. * You'll build the automations that make our whole software development lifecycle faster and more robust. YOU'LL FIT GREAT WITH THESE SKILLS AND VALUES * 3+ years of software engineering experience. You're a generalist - comfortable moving between writing a service, debugging infrastructure, and improving a pipeline in the same week. * You can build and ship production services in Go or TypeScript; not just scripts and glue. You also know Bash and have the judgment to pick the right tool instead of forcing your favorite one. * You can build and operate cloud infrastructure that survives real production workloads, ideally on GCP. * You've worked with GitHub Actions or similar CI/CD tools, and you know what a healthy and efficient pipeline looks like. * You have a solid grasp of scalable system design, distributed systems, cloud technologies, and how to roll out infrastructure changes. * You're comfortable with remote work and asynchronous communication. You also know that good collaboration needs visibility and cooperation, not just output. * You use AI tools effectively without handing over the steering wheel. * Product and business sense: you understand customer needs and focus on solving the right problems, not just building technically interesting solutions. * You're a self-directed learner. You don't need to know our whole stack on day one, but when you hit something unfamiliar, you dig in, ask good questions, and follow through. We'll give you room and context to grow; you bring the drive. Meeting all requirements is not necessary to apply. We encourage candidates who meet some but not all of these qualifications to submit their application. THINGS WE OFFER * Working on challenging and impactful projects at the forefront of one of the most innovative industries in Europe * Collaborating with some of the leading experts in Conversational Commerce and disrupting a fast-growing industry * Joining forces with a unique community of Tech, Product, Sales, Success, and Marketing experts committed to building the best product in Conversational Commerce. * High autonomy and visibility across the business with the option to own and drive new initiatives * Celebrating our major and micro-wins as well as getting to know each other better at regular team-building events * Sharing VSOP (virtual stock options) in the ownership and success of Charles * Working in a vibrant office in the heart of Berlin overlooking the Wall memorial * Flexible working model: Hybrid setup with remote work options and flexible hours * Earning a competitive compensation package What else we offer? * Urban Sports Club membership * Mental Health support through OpenUp * Free company lunch on Thursdays * A friendly, open, multicultural work environment * Dog-friendly office * Discounts on BVG tickets About us It’s better to have a conversation charles is a conversational AI and CRM for consumer brands that attracts, converts, services, and retains customers via AI agents, marketing automations, bulk campaigns, or an inbox for human agents. We help brands to maximize customer engagement and revenue through conversational channels such as WhatsApp. Businesses can reach customers in an interactive way, collect data to expand customer understanding and guide them to targeted offers that convert. charles’ AI Agents deliver hyperpersonalized experiences at scale while ensuring enterprise-grade security and GDPR compliance. Founded by Kapten & Son co-founder, Artjem Weissbeck, and ex-McKinsey ecommerce lead, Andreas Tussing. charles is backed by Salesforce Ventures, Accel and HV Capital and has raised over EUR 30 million to build the global leader in conversational marketing SaaS for global consumer brands. Charles and diversity: be yourself and no-one else Different perspectives bring innovation and richer work environments. We’re committed to building an inclusive company where you always feel like you belong, whatever your age, gender identity, ethnicity, religion, sexual orientation, disability, status or neurodiversity. These values sit at the heart of our hiring process, so we can create a welcoming workplace where everyone feels valued and heard.

WORUM ES GEHT Deine Mission   Als „DevOps/Platform Engineer (m/w/d)“ stellst du für unseren KI-Plattform Alan eine sichere, skalierbare, beobachtbare Plattform bereit und etablierst das Prinzip „You build it, you run it“ im Team. Du unterstützt die produktiven Teams auf „paved paths“ (Self-Service, Guardrails) und sorgst für vorhersehbare Performance und Kosten.   Deine Aufgaben * Du übernimmst Ownership für zentrale Plattform-/Serving-Komponenten * Du betreibst K8s-Cluster, Networking (Ingress), Storage (Datenbanken, Snapshots) und OS/Kernel-Patching und stellst deren sicheren und stabilen Betrieb sicher * Du modellierst Multi-Cloud-Ressourcen (insb. Open Telekom Cloud) per Konsole und IaC (Terraform) * Du baust CI/CD-Pipelines und Release-/Versionierungs-/Rollback-Strategien auf * Im Bereich Observability & Site Reliability Engineering implementierst du OpenTelemetry-basiertes Tracing, Metrics und Logs, definierst SLIs/SLOs, Alerting und Error Budgets * Gemeinsam mit unseren AI Engineers stellst du die Plattform für Model Serving bereit: GPU-Scheduling, Autoscaling, Inference-Gateways, Observability (Latency/QPS/Token-Kosten) DAS BEGEISTERT DICH * Du hast dein Masterstudium oder deine Promotion in einem der MINT-Fächer oder einem geisteswissenschaftlichen Fach mit MINT-Vertiefung erfolgreich abgeschlossen * Du verfügst über mindestens 2 Jahre relevante Berufserfahrung in den Bereichen DevOps, Site Reliability Engineering oder Platform Engineering und hast nachweisliche Verantwortung für Kubernetes, IaC, CI/CD, Observability sowie den produktiven Betrieb übernommen – idealerweise im SaaS-Umfeld * Du besitzt Praxis-Know-how in Git-basierten Deployments, modularer IaC, Secret-/Config-Management sowie Incident-Erfahrung * Du hast Security-Fachwissen in Netzwerksicherheit, Secrets, Härtung (CIS), Software-Supply-Chain und Zugriffsprinzipien (Least Privilege) * Idealerweise bringst du erste Praxiserfahrung im Betrieb von Inferenz-Workloads (vLLM o. ä.), GPU-Capacity-Management, Autoscaling und Observability, mit * Dich zeichnen Neugier und Wissbegierde sowie eine ausgeprägte Problemlösungs- und Kommunikationsfähigkeit aus * Du kommunizierst überzeugend und effizient in deutscher und englischer Sprache WARUM WIR? * Du arbeitest an einer hochmodernen, skalierbaren AI-Plattform mit viel Gestaltungsspielraum und übernimmst früh Verantwortung für zentrale Infrastruktur- und Architekturentscheidungen * Mit deinen zukünftigen Kolleg:innen tauschst du dich fachlich auf Augenhöhe aus und erhältst Budget und Zeit für eure eigenen Innovationsprojekte  * Du wächst bei uns fachlich und persönlich durch speziell auf dich abgestimmte Weiterbildungen, Zertifizierungen und Laufbahnprogramme  * In deinen Spezialgebieten kannst du deinen Schwerpunkt setzen und ausbauen * Neben einem attraktiven Fixgehalt zzgl. Umsatz- und Ergebnisbeteiligung kannst du Überstunden ausgleichen und Reisezeiten als Arbeitszeit buchen  * Durch freie Wahl des Arbeitsorts und flexible Arbeitszeit gestaltest du deinen Arbeitsalltag passend zu deinem Lebensstil  * Dich erwarten außerdem ein top ausgestatteter Arbeitsplatz, JobRad, Body & Mind Workout, GamesNights, Grillen auf unserer Dachterrasse, Team-Aktionen mit unternehmungslustigen Kolleg:innen, Sommerfeste mit deinen Familienmitgliedern und viele weitere Benefits