Backend Engineer

• Core member of the engineering team
• Responsible for the further development and operation of our broker, finanzen.net zero
• Work as part of an agile team, collaborating with internal departments including IT, Marketing, Support and Business
• Develop the platform using Java and Spring Boot in a cloud-based environment (AWS)
• Responsible for our platform and 3rd-level support requests
• Monitor and manage end-of-day processing from the banking system and handle securities order processing.

Senior Backend Engineer

• Collaborate closely with our development team on products built with F# (ASP.NET Core) and React.js
• Take full ownership of features, working closely with product in a cross-functional team
• Apply a functional programming approach and contribute to architectural discussions
• Keep our tech stack up to date and scalable
• Implement, optimize, and maintain new product features
• Improve all phases of the product lifecycle – from planning to deployment/production
• Build and maintain integrations with third-party systems like Azure and Office365

Senior Full Stack Engineer – F#, ASP.NET Core, ReactJS

• Build the core backend services
• Create a scalable SaaS foundation
• Power agent-facing retrieval workflows
• Work across product and infrastructure
• Operate what you build
• Contribute to technical direction
• Effective communication
• Ownership and impact

Staff Backend Engineer – Grafana

• Design, develop, and maintain core backend systems powering high-throughput trading, exchange, and network infrastructure using clean, efficient, and maintainable code.
• Index on-chain data into event queues and persistence layers to serve WebSockets and scalable APIs consumed by user interfaces and risk dashboards.
• Define the high-level backend structure, data flow, and interactions between components, focusing on event-driven architecture and messaging patterns common in financial systems.
• Ensure architectural designs meet strict performance, high availability, and reliability standards.
• Implement failover mechanisms, redundancy strategies, and disaster recovery plans to minimize potential downtime.
• Implement and maintain robust security measures to protect backend infrastructure and APIs against DDoS attacks, data breaches, injection vulnerabilities, and other threat vectors.
• Define data storage strategies and select appropriate databases and models tailored for financial applications.
• Evaluate trade-offs across relational databases, key-value stores, and messaging queues.
• Develop and execute a comprehensive testing strategy covering unit, integration, security, load, and performance testing.
• Collaborate with the broader engineering team to establish test reporting and maintain standardized testing processes.
• Stay informed on emerging backend technologies, evaluating new tools, frameworks, and methodologies to elevate system performance and scalability.
• Document architectural designs clearly for both technical team members and non-technical stakeholders.
• Participate in code reviews, mentor engineering team members, and enforce coding standards and best practices.
• Collaborate closely with cross-functional teams, including on-chain engineers, frontend developers, product managers, quantitative specialists, and executive leadership.

Senior Backend Engineer, Rust/C++

• You are responsible for enhancing and developing new microservices for SMART COMPARE
• You participate in all phases of the software development lifecycle (architecture, design, implementation, quality assurance, and documentation)
• You work according to agile methods and take part in code reviews
• You collaborate with colleagues from consulting, database administration, development, and support
• You actively contribute to technological advancement — whether in C#-based systems or in the Perl environment

Software Developer – C# / Perl

• 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.

Backend Engineer jobs in Germany

See all jobs on JobTailor