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Java backend developer • hamburg

Zuletzt aktualisiert: vor 2 Tagen
Senior Backend Developer

Senior Backend Developer

Digital Blast GmbHHamburg, Germany
Quick Apply
SaaS that connects creators with their fans through WhatsApp and SMS.We empower influencers and creators to build meaningful fan relationships, monetize exclusive content, and foster genuine engage...Mehr anzeigenZuletzt aktualisiert: vor über 30 Tagen
Fullstack Developer (m / w / d)

Fullstack Developer (m / w / d)

plusYOU GmbHHamburg, Hamburg, DE
Java, Legacy, Fachlichkeit - bau die Zukunft auf Bestand.Fullstack Developer (m / w / d) in Hamburg.Unser Partner kümmert sich seit über 30 Jahren um die Entwicklung und Betreuung von maßgeschneiderten...Mehr anzeigenZuletzt aktualisiert: vor 7 Tagen
Backend Developer Java (m / w / d)

Backend Developer Java (m / w / d)

Sopra SteriaHamburg, DE
Du entwickelst nach dem Clean Code Ansatz auf Basis automatisierter Tests.Du hast Deinen Schwerpunkt in der Backend-Entwicklung mit Java, hast aber auch Interesse Deinen Horizont zu erweitern.Du an...Mehr anzeigenZuletzt aktualisiert: vor über 30 Tagen
Staff Backend Developer (Python)

Staff Backend Developer (Python)

Rise TechnicalHamburg
Staff Backend Python Developer - Simulation Algorithms.Hamburg - Permanent Employee, Full-Time, Hybrid (Monday & Friday remote). Holiday + Flexible working hours.Excellent opportunity for a Staff Ba...Mehr anzeigenZuletzt aktualisiert: vor 10 Tagen
Spezialist : in Application Development Backend

Spezialist : in Application Development Backend

HDI AGHamburg, DE
Stellenbeschreibung Spezialist : in Application Development Backend.Pflege der in COBOL entwickelten Programme und Schnittstellen im IBM Mainframe Umfeld (z / OS). Mitwirken beim Modernisieren unserer A...Mehr anzeigenZuletzt aktualisiert: vor 8 Tagen
Full Stack Developer (m / w / d) HealthTech Start-up in Hamburg

Full Stack Developer (m / w / d) HealthTech Start-up in Hamburg

Anna3 Solutions UG (haftungsbeschränkt)Hamburg, Germany
Homeoffice
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Anna3 Solutions UG (haftungsbeschränkt).Softwarelösungen für den Gesundheitsmarkt.Wir starten aktuell mit der Entwicklung einer modernen Plattform im Bereich. Als junges Start-up mit flachen Hierarc...Mehr anzeigenZuletzt aktualisiert: vor über 30 Tagen
BACKEND.NET / C# DEVELOPER

BACKEND.NET / C# DEVELOPER

Cluster ReplyHamburg
Software-Lösungen für unsere internationalen Kunden auf Basis des.Du hast einen klaren Fokus auf Architektur, Design, Testing und Implementierung nach modernsten Standards.Clean-Code-Prinzipien, cl...Mehr anzeigenZuletzt aktualisiert: vor über 30 Tagen
Full-time Backend Developer (f / m / d)

Full-time Backend Developer (f / m / d)

VAARHAFTHamburg, Germany
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VAARHAFT is a young startup that deals with the authentication of digital media.In an age of publicly accessible generative AI, creating deepfakes has become child's play, meaning that the authenti...Mehr anzeigenZuletzt aktualisiert: vor 10 Tagen
Senior Java Backend Developer (w / m / d)

Senior Java Backend Developer (w / m / d)

workidentity GmbHHamburg, Hamburg, DE
Deine nächste Mission : Backend mit Weitblick.Du liebst sauberen Code, denkst in Microservices und hast Lust, ein Team fachlich zu führen? Dann bist du bei uns goldrichtig.Wir sind ein innovativer B...Mehr anzeigenZuletzt aktualisiert: vor über 30 Tagen
Senior Backend Developer

Senior Backend Developer

ConsortiaHamburg
Consortia have recently partnered with a B2B SaaS company based in Hamburg.They build fully digital Software-as-Service (SaaS) solutions for insurance claims processing by creating a unique claims ...Mehr anzeigenZuletzt aktualisiert: vor über 30 Tagen
Senior Java Developer (w / m / d)

Senior Java Developer (w / m / d)

bits&birds GmbHHamburg, Germany
Homeoffice
Quick Apply
In kleinen Projektteams mit echter End-to-End-Verantwortung arbeiten Java Developer hier an abwechslungsreichen, langfristigen Projekten. Ein stabiles Umfeld mit langjährigen Stammkunden, ein modern...Mehr anzeigenZuletzt aktualisiert: vor über 30 Tagen
Senior Java Backend / DevOps Engineer - AI-First (m / f / d)

Senior Java Backend / DevOps Engineer - AI-First (m / f / d)

Goodgame StudiosHamburg
Quick Apply
Goodgame Studios is a leading free-to-play, online games development company active on web and mobile platforms.We self-publish our games in-house and have all relevant professions under one roof : ...Mehr anzeigenZuletzt aktualisiert: vor über 30 Tagen
Senior Java Backend Developer (w / m / d)

Senior Java Backend Developer (w / m / d)

Netfonds AGHamburg, Heidenkampsweg 73, Deutschland
Wir sind über 80 KollegInnen in der gesamten IT und die Softwareentwicklung besteht aus folgenden Teams : .Produktteams + 1x Datenmanagement + 1x DWH + 1x IDP-Team (Intelligent Document Processing).C...Mehr anzeigenZuletzt aktualisiert: vor über 30 Tagen
Developer (m / w / d)

Developer (m / w / d)

HaysHamburg
Arbeitnehmerüberlassung Hamburg Startdatum : sofort Referenznummer : 861610 / 1.Diesen Job teilen oder drucken.Entwicklung und Implementierung von Backend-Services - Konzeption, Realisierung und Optimi...Mehr anzeigenZuletzt aktualisiert: vor 2 Tagen
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Senior Backend Developer

Senior Backend Developer

Digital Blast GmbHHamburg, Germany
Vor 30+ Tagen
Anstellungsart
  • Quick Apply
Stellenbeschreibung

fanblast is a fast-growing SaaS that connects creators with their fans through WhatsApp and SMS. We empower influencers and creators to build meaningful fan relationships, monetize exclusive content, and foster genuine engagement. Our product focuses on ease of use, seamless monetization, and scalability, transforming the way creators connect with their audience. With a collaborative, agile, and creative work culture, each team member's input helps shape our innovative product. Join fanblast, where your work will help define the future of creator-fan interactions and bring real value to influencers across various industries, including entertainment, social media, and more.

We are seeking an experienced Senior Backend Developer to join our engineering team. You will be responsible for designing, developing, and maintaining scalable backend services that power our tool. This role involves working with a modern microservices architecture, integrating with third-party services, and ensuring high performance and reliability of our backend systems.

Aufgaben

Responsibilities

Design, develop, and maintain robust, scalable backend APIs and microservices

  • Architect and implement efficient database schemas and queries for PostgreSQL
  • Implement caching strategies using Redis to optimize application performance
  • Build and maintain message queue integrations using RabbitMQ and NATS
  • Integrate with third-party payment processors (Stripe, Solidgate, PayPal)
  • Develop and maintain integrations with messaging platforms (Telegram, WhatsApp)
  • Implement media processing pipelines and services
  • Write clean, maintainable, and well-documented TypeScript / JavaScript code
  • Collaborate with frontend developers and other team members to deliver features
  • Participate in code reviews and maintain high code quality standards
  • Debug and resolve production issues in a timely manner
  • Optimize application performance and scalability
  • Design and implement RESTful APIs following best practices
  • Work with Docker and containerized applications
  • Implement proper error handling, logging, and monitoring

Qualifikation

Required Technical Skills

Core Technologies

  • Node.js (v24+) >

    • Advanced proficiency (Building high-performance, scalable applications)

  • TypeScript >

    • Strong experience (Type-safe development and large-scale application maintenance)

  • Express.js >

    • Strong experience (Building RESTful APIs and web services)

  • JavaScript (ES6+) >

    • Strong experience (Modern JavaScript features and best practices)

    Databases & Data Storage

  • PostgreSQL >

    • Database design, query optimization, migrations

  • Redis >

    • Caching strategies, session management, pub / sub

  • Couchbase >

    • NoSQL / document database operations

    Message Queues & Event Systems

  • RabbitMQ >

    • Message queue implementation and management

  • NATS >

    • Event-driven architecture and messaging

    Infrastructure & DevOps

  • Docker >

    • Containerization and Docker Compose

  • Microservices Architecture >

    • Designing and maintaining service-oriented systems

  • Nginx >

    • Reverse proxy configuration and load balancing

  • Linux / Unix >

    • Server administration and deployment

    Third-Party Integrations

  • Payment Processing (Stripe, Solidgate, PayPal integration experience)
  • Messaging Platforms (Telegram Bot API, WhatsApp integration)
  • Cloud Services (AWS SDK, Superbase & Betterstack)
  • API Integration (RESTful APIs, webhooks, authentication)

    • Development Tools & Practices

  • Git (Version control and collaborative development)
  • Yarn / NPM (Package management)
  • Code Quality (ESLint, Prettier, code review practices)
  • Testing (Unit testing, integration testing)
  • API Documentation (OpenAPI / Swagger, API design best practices)

    • Preferred Qualifications

  • 5+ years of professional backend development experience
  • Experience with microservices architecture and service communication patterns
  • Strong understanding of database design principles and query optimization
  • Experience with payment gateway integrations and PCI compliance considerations
  • Knowledge of real-time messaging systems and WebSocket protocols
  • Experience with media processing and file uploads
  • Understanding of security best practices (authentication, authorization, encryption)
  • Experience with monitoring, logging, and observability tools
  • Familiarity with CI / CD pipelines and automated deployment processes
  • Experience working in agile development environments

    • Nice to Have

  • Experience with GraphQL APIs
  • Knowledge of Kubernetes for container orchestration
  • Experience with message broker patterns (pub / sub, queues)
  • Understanding of event sourcing and CQRS patterns
  • Experience with performance testing and optimization
  • Knowledge of internationalization (i18n) implementation
  • Experience with WebRTC or real-time communication protocols

    • Benefits

    Why you should join us

  • Great workplace in the center of Hamburg (hybrid : 3 days per week in office).
  • Flat hierarchies, fair compensation & flexible working hours
  • You'll be part of an ambitious team that values speed, persistence and results.
  • You'll work with top creators, helping them transform how they connect and monetize.
  • fanblast is at the center of the creator economy boom — a $250B+ market that's reshaping culture.
  • We're a startup with momentum : lean, ambitious, and ready to scale

    • Providing interactive experiences to the world. In all aspects of entertainment.