Senior Frontend Engineer (Kotlin) - Frontend Core

DKB Code Factory

Welcome at DKB Code Factory….  { { … a_place_to_stay_yourself: } } ;  { { … a_place_to_stay_curious:   Join our engineering team as a Senior Backend Engineer (x,f,m) and play a key role in designing and operating the core backend systems that power secure, scalable, and high-performance digital platforms in a highly regulated environment. You will take ownership of mission-critical backend services, drive technical excellence, and contribute to reliable, customer-centric solutions impacting thousands to millions of users. This role offers the opportunity to deepen your expertise, shape architecture decisions, mentor peers, and influence engineering standards within a collaborative, quality-driven organization.   } } ;  { YOUR_RESPONSIBILITIES: [ * Design, build, and operate scalable, secure, and maintainable backend services with clean architecture and well-defined APIs. * Deliver functional, well-tested code adhering to Clean Code principles, Test Driven Development, and Domain-Driven Design. * Collaborate closely with frontend developers, product owners, QA, UX designer and other stakeholders to align API specifications and implementations. * Proactively identify and reduce technical debt while implementing user-driven improvements. * Lead and participate in technical deep dives and knowledge sharing to elevate engineering best practices. * Mentor peers and contribute to cross-team problem solving and innovation. ] } ; { following_qualifications_would_be_in_line_with_our_desired_profile_for_this_position: [ * Proven experience in backend development using Kotlin and Spring Boot framework. * Strong understanding of Domain Driven Design, Ports & Adapters (Hexagonal Architecture), and API design/validation. * Experience with relational databases such as Postgres. * Experience with container orchestration tools including Docker, Kubernetes and Helm. * Prioritizing code quality and engineering excellence: You believe in the power of automated test suites and ideally embrace TDD as a core part of your development workflow to build scalable and bug-free solutions. * Excellent communication and collaboration skills to work effectively across teams and stakeholders. * Ability to take ownership, deliver under uncertainty, and maintain attention to detail. * Bonus: You have a Startup and/or Finance background.   * You're passionate about your work, but also know how to enjoy your free time!   ] } ; Got the feeling not to match every single requirement? Don’t worry! We encourage you to apply anyways, even if your qualifications do not align perfectly. You might still be just the right candidate for us! { { … a_place_to_stay_together: From Morning Daily to Afterwork Drink, team spirit is essential to us. The heart of our togetherness is that we truly are connected with each other: We not only share fun & laughter, but also honest opinions - because that's how we grow: We exchange ideas, give support in our personal development, and celebrate success together! Besides our great community, we also offer numerous other benefits... } } ;

Doctolib

What we do Join a team of passionate and hardworking entrepreneurs to transform healthcare! Working in the tech team at Doctolib involves building innovative products and features to improve the daily lives of care teams and patients. We work in feature teams in an agile environment, while collaborating with product, design, and business teams.   What you'll do We are looking for a Senior Software Engineer FullStack to join the FIRE (FHIR & Interoperability Requirements EHR) team in the Clinical domain. As a Senior Software Engineer, your mission will be to ensure that Doctolib DE is well connected to the German digital health ecosystem and compliant with FHIR standards. You will be responsible for the interoperability of the German EHR (Electronic Health Record): connection to the Telematik-Infrastruktur (TI), electronic prescriptions (eRezept), qualified electronic signature (QES), connected medical devices (GDT), and integration of laboratory results.   Your responsibilities include but are not limited to: * Build and maintain the integration with German governmental health services, ensuring other Doctolib teams can seamlessly interact with the German health system through your platform * Drive the integration of the national EHR (Electronic Health Record) into Doctolib, with a multi-country rollout approach, navigating each country's standards and technical constraints * Design, ship, and operate production-grade fullstack solutions that connect the Doctolib platform to complex healthcare infrastructure * Partner with other engineering teams to shape the architecture of Doctolib's interoperability platform * Ensure privacy, security, and compliance by design in one of healthcare's most regulated technical environments * Own performance, observability, and reliability: monitoring dashboards, SLO/SLI, and system health * Contribute to cross-functional initiatives that shape Doctolib's future interoperability strategy across Europe   About our tech environment * Our solutions are built on a single, fully cloud-native platform that supports web and mobile app interfaces, multiple languages, and is adapted to country and healthcare specialty requirements. * The FIRE team works on a FullStack scope: React / TypeScript on the frontend and Kotlin on the backend. * Our broader stack is composed of Rails, TypeScript, Java, Python, Kotlin, Swift, and React Native. * We leverage AI ethically across our products to empower patients and health professionals. Discover our AI vision here!   Who you are Are you convinced that you have exactly what it takes for the position? Then we encourage you to apply. Even if you don't meet every requirement, you might be exactly the right future Doctoliber for this or other positions! Before you read on, if you don't have the exact profile described below, but you feel this job description matches your skill set, we still encourage you to apply. * You have 6+ years of experience as a software engineer, with strong fullstack expertise, particularly in Kotlin and React/TypeScript * You have a track record of building robust, end-to-end solutions that balance technical excellence with intuitive user experiences * You are able to design systems (system design) and make sound architectural decisions in complex environments * You understand and promote best practices related to the software development life cycle: automated testing, CI/CD, and DevOps practices (you build it, you run it) * You are curious, autonomous, and have a taste for exploring new systems : you are comfortable solving problems without complete documentation * You are at ease in complex technical environments with many external dependencies and evolving standards * You are eager to share your knowledge and help the team grow through pair programming and mentoring * You are comfortable speaking and writing in English in your day-to-day with the team, German is a plus Now, it would be fantastic if you: * Have experience with healthcare interoperability standards, particularly FHIR, HL7, or similar * Have experience integrating with governmental or regulated health systems (e.g. Telematik-Infrastruktur, eRezept, GDT) * Are familiar with the German digital health ecosystem   What we offer * A Deutschlandticket (Germany-wide public transport pass) fully paid for by Doctolib * 28 vacation days + 1 additional day for each full calendar year of employment (up to a maximum of 30 days) * Work from abroad for up to 10 days per year thanks to our flexibility days policy * Company health insurance with great supplementary benefits through our partner Allianz * Company pension scheme (bAV) through Allianz with an employer subsidy of 40% (15% within the probationary period) * Enrollment in Doctolib's long-term employee value sharing plan called DoctoGrowth * The Doctolib Parent Care program, which includes one month additional parental leave and much more * Free mental health and coaching services through our partner Moka.care * Subsidized sports membership through our partner Urban Sports Club * A flexible workplace policy offering both hybrid and office-based mode * Alongside healthy snacks and our regular breakfast buffet, we provide a subsidized meal benefit * For caregivers and workers with disabilities, a package including an adaptation of the remote policy, extra days off for medical reasons, and psychological support   The interview process * Recruiter Interview * Feature Building Interview * System Design Interview * Behavioral Interview * Reference check * Offer! Job details * Full-time * Location: Berlin * Working mode: Hybrid * Start date: as soon as possible If you would like to find out more about tech life at Doctolib, feel free to read our latest Medium blog articles! At Doctolib, we are committed to improving access to healthcare for everyone. This translates into our recruitment process. We evaluate candidates based solely on qualifications and motivation, without any form of discrimination. The more diverse ideas are heard, the more our product will truly improve healthcare for all. You are welcome to apply to Doctolib, regardless of your gender, religion, age, sexual orientation, ethnicity, disability. To ensure equal opportunities, we invite you to exclude personal information (e.g. pictures, age) from your applications. If you require any accommodation, please let us know for support during the hiring process.  Join us in building the healthcare we all dream of! All information provided is processed by Doctolib for application management. For data processing details, click here. Please contact hr.dataprivacy(at)doctolib.com for inquiries or to exercise your rights.

meteocontrol

DAS ERWARTET DICH: * Transformation von Prototypen in produktionsreife Microservices für die Cloud EMS-Plattform und Etablierung von Architekturstandards. * Design und Entwicklung skalierbarer Backend-Services mit Kotlin/Ktor, Node.js und PostgreSQL. * Implementierung von RESTful APIs für Frontend-Anwendungen und Integration externer Systeme. * Aufbau und Optimierung von Datenpipelines für Echtzeit-Monitoring und Analyse großer Energiemanagement-Daten. * Zusammenarbeit mit Frontend-Entwicklern und Produktmanagement für kohärente Produktfeatures und API-Integration. * Etablierung von Entwicklungsstandards, API-Dokumentation, Testing-Strategien und CI/CD-Prozessen. * Unterstützung von DevOps-Initiativen, Containerisierung und Monitoring. * Mentoring von Junior-Entwicklern, Durchführung von Code-Reviews und Förderung einer qualitätsorientierten Entwicklungskultur. DAS BRINGST DU MIT: * Abgeschlossenes Studium in Informatik, Software Engineering oder vergleichbar, mit Fokus auf Backend-Entwicklung. * Mindestens 4 Jahre Erfahrung in Backend-Entwicklung mit Enterprise-Anwendungen und Microservices. * Experte in Kotlin/Ktor, Node.js und PostgreSQL (inkl. Datenmodellierung, Performance-Tuning). * Erfahrung mit RESTful APIs, Microservices-Architektur und Event-Driven Systems (z. B. Kafka, RabbitMQ). * Erfahrung mit Containerisierung (Docker) und Orchestrierung (Kubernetes), Testing, CI/CD und Monitoring. * Führungserfahrung oder Mentoring von Entwickler:innen. * Fließendes Englisch; Deutschkenntnisse von Vorteil. * Erfahrung in Regelungstechnik ist ein Plus. Wir begrüßen Bewerbungen von Menschen mit Behinderung und fördern aktiv Chancengleichheit und Vielfalt. DARAUF KANNST DU DICH AUCH FREUEN: 6 Gründe für deinen Einstieg bei meteocontrol (und mehr): 1. Arbeiten für eine bessere Zukunft: Mit uns schaffst du eine bessere Zukunft für uns und alle Generationen nach uns 2. Mehr Flexibilität: Wir wissen, wie wichtig eine ausgewogene Work-Life-Balance ist. Deshalb bieten wir flexible Arbeitszeiten und ein Home-Office-Modell, das sich an deine Bedürfnisse anpasst. 3. Urlaub, der wächst: Starte mit 30 Tagen Urlaub und deine Treue wird alle zwei Jahre mit einem zusätzlichen Urlaubstag belohnt – bis zu 35 Tage für noch mehr Auszeit! 4. Kontinuierliches Lernen & Weiterentwicklung: Deine Weiterentwicklung liegt uns am Herzen – mit vielfältigen Angeboten unterstützen wir dich bei deiner Karriereplanung im Unternehmen. 5. Geld on top: Neben deinem Gehalt erhältst du eine monatliche SpenditCard im Wert von 50 € sowie einen Zuschuss zum Deutschlandticket. 6. Fitness: Trainiere mit unserem attraktiven Arbeitgeberzuschuss bei EGYM Wellpass, nimm an unserem JobRad Leasing teil oder power dich bei unserem jährlichen Firmenlauf aus. ... viele weitere Gründe findest du auf unserer Karrierewebseite!  DEIN/E ANSPRECHPARTNER:IN: Pia Schwiebert Business Partner People & Culture p.schwiebert@meteocontrol.com