Backend Engineer

• Own a domain within our Go codebase
• Contribute to architectural decisions and ensure code quality
• Step in and keep projects moving when your lead is unavailable
• Participate in pull requests, code reviews, and technical discussions
• Collaborate closely with product and design teams to translate business needs into technical solutions

Senior Backend Engineer, Go

• Als Consultant bringst Du Hands-on Deine Expertise direkt im Projekt ein und haust so alle aus den Socken.
• Du zauberst mit Java (17+), Spring Boot und Microservices die coolsten Anwendungen aus dem Code-Hut.
• Du bist Meister des CI/CD-Universums und sorgst dafür, dass Anwendungen mit Lichtgeschwindigkeit ins Rampenlicht katapultiert werden.
• Mit Docker und Kubernetes jonglierst Du virtuose Containerstücke und beeindruckst mit Performance, die uns umhaut.
• Cloud-Plattformen wie AWS oder Azure sind Deine Spielwiesen, auf denen Du die Wolken beherrschst und Anwendungen in luftige Höhen hebst.
• Bei der Frontend-Magie bist Du der Superstar und kreierst mit Angular, React, und/oder vue.js beeindruckende interaktive und reaktionsfähige Benutzeroberflächen, die den Nutzer zum Staunen bringen.

Java Full-Stack Consultant – m/w/d

• Lead the technical design and implementation of new partner integrations and platform features.
• Own the full lifecycle of your services—from development and deployment to production monitoring, alerting, and incident response.
• Actively manage our AWS cloud infrastructure, writing and maintaining Infrastructure as Code (Terraform) to ensure environment parity and security.
• Evolve our integration strategy, championing a platform-first mindset that drives synergies across our integration ecosystem.
• Ensure high-performance, secure communication between internal and external systems.
• Leverage cutting-edge AI-powered tools across the entire software development lifecycle—from system design and code generation to infrastructure automation, log analysis, and performance monitoring.
• Provide technical support and create high-quality documentation to ensure the long-term maintainability of our connectivity layer.

• Develop and enhance internal tools and backend services using Go or C#/.NET
• Design, maintain, and optimize PostgreSQL databases, including schema design, migrations, and performance tuning
• Build and maintain data synchronization processes across multiple systems
• Design and optimize agent-first development workflows and CI/CD pipelines using GitLab
• Collaborate closely in a cross-functional team

Backend Developer, Go, C#, .NET

• Design, build, and maintain Python services for sports data ingestion, transformation, and distribution
• Integrate with third-party sports data providers and handle differences between provider models, formats, and update patterns
• Build reliable pipelines for near real-time and batch data processing
• Improve data validation, reconciliation, monitoring, alerting, and replay tooling
• Work on domain models for events, competitions, participants, markets, odds, scores, and related sports entities
• Investigate production issues, trace data problems, and improve system observability
• Collaborate with backend, product, trading, QA, and platform teams to deliver dependable data flows
• Contribute to architecture decisions, code reviews, technical standards, and mentoring within the squad

Senior Python Engineer, DataFeed Team

• Contribute to the further development of the hellomed web application with Vue 3, Nuxt 4, and Laravel
• Work closely with the product team to implement requirements efficiently and reliably
• Proactively contribute ideas for refactoring, performance improvements, and future-proofing the codebase

Full-Stack Developer, Nuxt/Laravel

• Contribute as part of one of five high-performing Scrum teams to further develop Projektron BCS
• Develop implementation concepts for extensions and changes in BCS
• Implement the developed concepts in the system
• Participate in resolving defects within the team and help prevent bugs by maintaining high test coverage
• Support second-level support in addressing customer-specific requests
• Assist with configuring BCS and integrating external systems

Frontend Developer, JavaScript, TypeScript

• Develop applications and capabilities based on specified requirements
• Implement scalable software solutions using Java/JEE for government clients
• Analyze business requirements to provide feedback and estimate effort
• Design, code, test, debug and document programs following agile development practices
• Support projects and customers on site as needed; business travel worldwide is desirable

Senior Software Developer – Full Stack, Java/JEE

• Du entwickelst den Kern unserer Plattform weiter: Customs Engine, Versand- und Fulfillment-Portal, Carrier-Schnittstellen und unsere öffentlichen APIs (CrossBorderX, Return Module).
• Du gestaltest die technische Modernisierung aktiv mit – von der bestehenden PHP/PostgreSQL-Basis hin zu einer modernen Framework-Architektur (Laravel/Symfony) und sauberen CI/CD-Prozessen.
• Du integrierst neue Postgesellschaften, Carrier und Kundensysteme (REST, EDI, Datenimporte) und setzt regulatorische Anforderungen um – z. B. die neuen EU-Zollregeln nach Wegfall der 150-€-Freigrenze.
• Du übernimmst Verantwortung für Architekturentscheidungen, Code-Qualität und Reviews – und baust mit uns ein wachsendes Entwicklerteam auf.

Senior Backend Developer, PHP, PostgreSQL

• Du entwickelst Features für unsere Plattform: Versand- und Fulfillment-Portal, Carrier-Anbindungen, Datenimporte/-exporte und unsere APIs (CrossBorderX, Return Module).
• Du bindest neue Postgesellschaften, Carrier und Kundensysteme an (REST-Schnittstellen, EDI, strukturierte Datenfeeds) – jede Anbindung ist ein eigenes kleines Projekt mit sichtbarem Ergebnis.
• Du arbeitest an der Customs Engine mit und setzt gemeinsam mit dem Team regulatorische Anforderungen um (z. B. neue EU-Zollregeln).
• Du schreibst automatisierte Tests, nimmst an Code Reviews teil und wächst dabei fachlich – eng begleitet durch unseren Lead Developer.

Backend Developer, PHP, PostgreSQL

• Du baust ein hochinnovatives MedTech-Tool.
• Du agierst als Techical Lead im Team, triffst Architekturentscheidungen und machst Code-Reviews.
• Du designst, entwickelst und pflegst Backend-Services und codest APIs.
• Du arbeitest mit Frontend-Entwicklern zusammen, um End-to-End-Webanwendungen zu bauen.
• Du übernimmst das Cloud-Deployment, Monitoring und die Zuverlässigkeit der Services.
• Du sicherst Codequalität, Testing, Dokumentation und DevOps-Best-Practices.
• Du brainstormst mit Produktmanagern und R&D-Ingenieuren über die Produkt-Roadmap.

Technical Lead, Fullstack, Python, Cloud

• Full-stack software development using modern technologies (Java / Spring / Angular / relational databases / containers, and more)
• Designing and implementing state-of-the-art architectures
• Architecture documentation, preferably following the arc42 approach and using UML
• Ensuring compliance with standards and high quality throughout the software development process (e.g., through code reviews or pair programming sessions)
• Responsibility for implementation in development projects within a partly English-speaking team, working closely with colleagues and customers
• Supporting preparation and execution of customer meetings

Senior Lead Developer – Architect, Java, Web

• Implement varied development projects at our own sites, on customer premises, or remotely
• Work in different phases of development, e.g., architecture, implementation, or verification/validation
• Develop complex software systems based on Linux, Windows, ARM, Infineon, Intel and communication buses (CAN, LIN)
• Manual C/C++ code development as well as model-based approaches for automated code generation and simulations using MATLAB, Simulink or TargetLink

C/C++ Software Engineer – Embedded Systems

• Entwicklung und Weiterentwicklung von Backend-Funktionalitäten mit Python (z. B. APIs, Services, Datenverarbeitung).
• Aufbau, Dokumentation und Pflege von Schnittstellen (z. B. REST APIs).
• Integration von Datenverarbeitungs- und Analysepipelines im medizinisch-technischen Kontext.
• Mitarbeit an KI-gestützten Komponenten – z. B. Datenaufbereitung, Modellintegration oder Optimierung bestehender Modelle.
• Zusammenarbeit mit Frontend-, Design- und Produktteams, um Funktionen sauber umzusetzen.
• Weiterentwicklung bestehender Algorithmen (z. B. Segmentierung, Klassifikation oder Optimierung).

Pflichtpraktikum, Backend Softwareentwicklung, KI – Python, APIs, MedTech

• Full-stack development: You design and implement Java and web applications across front-end and back-end — your creativity is in demand on client projects!
• Depending on your interests and background, you may have the opportunity to take on technical (partial) project leadership.
• Quality guardian: Clean Code, Test-Driven Development and DevOps are not foreign concepts to you but part of your daily toolkit.
• Thoughtful architecture: You see architecture as the foundation of good software.
• Technology & innovation: You are always looking for the latest trends, architectures and technologies and are happy to try them out.
• Problem solving: You identify technical issues, optimize existing solutions and develop creative approaches.
• Collaboration: You work closely with other teams to find the best solutions for the project.
• Advisory role: You are not only a developer but also an advisor in client projects, actively contributing your expertise.
• Professional development: Practice-oriented training — especially in architecture and cloud topics — as well as regular knowledge exchange in our guilds is part of our DNA.

Senior Software Developer, Java Fullstack

• Build backend services, APIs and workflows for the AI Neobank app.
• Support products across insurance, payments, wallet, savings, investing, travel and financial services.
• Design reliable systems for user accounts, transactions, partner integrations, reconciliation, notifications and operations.
• Work with product and mobile teams to ship customer-facing journeys quickly.
• Integrate with banks, payment gateways, insurers, data providers and other partners.
• Improve system reliability, observability, security and performance.
• Build systems that are practical, auditable and ready for regulated financial products.

Backend Software Engineer – AI Neobank App

• Build backend services and APIs for onboarding, accounts, payments, cards, transfers, rewards, travel, FX, KYC and risk flows.
• Design reliable systems that can support real customer transactions, operational workflows and future financial products.
• Integrate with internal systems, financial partners, payment providers, AI services and third-party platforms.
• Own backend quality across reliability, security, latency, observability, data integrity and incident handling.
• Work with product, frontend, mobile and AI teams to launch features quickly and safely.
• Improve existing systems by simplifying flows, removing manual work and automating repeatable processes.

Backend Developer

• Join our UI Engineering team and take ownership of full-stack projects that power our adtech ecosystem
• Build and maintain modern React frontends and Node.js APIs with TypeScript
• Design and implement REST or GraphQL APIs that scale efficiently
• Collaborate closely with backend engineers, designers, and product owners to translate requirements into elegant solutions
• Write clean, maintainable, and well-tested code – with automated tests as a natural part of your workflow
• Contribute to architecture decisions and best practices

Senior Full Stack Software Engineer – React, Node.js

• Build lean, high-performance software components in C++
• Implement efficient, maintainable C++ systems
• Analyze systems, hunt bugs, and write automated tests
• Actively contribute to technical discussions and mentor less experienced colleagues
• Define and evolve modern best practices for the team

C++ Engineer

• Develop and maintain microservices that connect worlds (internal & external systems)
• Command side quests (and sometimes the main questline) when the Tech Lead is away from keyboard
• Shape the team’s strategy with your strong opinions and battle-tested experience
• Master the arts of authentication & authorization (OAuth, Auth0 integrations, specs reading = your spellbook)
• Design & optimize SQL databases like a level 99 architect (bonus points for PostgreSQL mastery).

Backend Engineer jobs in Germany

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