Fullstack Developer – Backend Focus

🕒 September 22

🇩🇪 Germany – Remote

💵 €70k - €80k / year

⏰ Full Time

🟡 Mid-level

🟠 Senior

🧑‍💻 Full-stack Engineer

👻 Ghost score 0%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Circunomics

WebsiteLinkedInAll Job Openings

11 - 50 employees

💼 Consulting

📦 Logistics

🏭 Manufacturing

Consulting • Logistics • Manufacturing

Circunomics is a company committed to creating a circular battery economy through advanced battery lifecycle management. They provide analytics and a B2B marketplace to facilitate precise and transparent battery trade, helping businesses maximize profits while promoting sustainability. With an emphasis on second-life batteries, Circunomics aims to enable the energy transition and leverage the latent value in used batteries. Their expertise and platform position them as market leaders in battery lifecycle management.

📋 Description

• Own features end-to-end, from architecture, data model, and backend implementation to frontend, deployment, and production support • Design, build, and operate container-based backend services, APIs, and infrastructure in AWS • Design solutions for distributed, message-driven, and service-oriented systems • Implement frontend features in Angular based on product requirements and designs • Analyse business requirements and translate them into pragmatic technical solutions • Continuously improve application performance, reliability, and maintainability • Write clean, maintainable, understandable code with appropriate automated tests • Conduct thorough code reviews and contribute to engineering standards • Troubleshoot and debug issues across backend, frontend, and infrastructure • Collaborate closely with product, design, and other engineers in an agile environment • Use AI coding assistants and agents regularly; delegate suitable work effectively and critically review AI-generated code

🎯 Requirements

• 5+ years of professional software development experience, with the majority focused on backend engineering • Strong professional experience with PHP and Symfony, or another backend ecosystem such as Java, Python, or Node.js, with willingness to work in PHP/Symfony from day one • In-depth understanding of REST APIs, message-based systems, microservice architectures, and distributed systems • Strong experience with relational databases, data modeling, and schema design • Hands-on professional experience implementing frontend features in Angular or a comparable framework such as React or Vue.js • Strong in component and state logic and API integration; solid enough in styling to implement a given design • Experience with automated testing, Docker and containerized applications, and cloud-native development; ideally hands-on with AWS • Experience using AI coding assistants or agents such as Claude Code, Cursor, or GitHub Copilot • Clear communication in English; German is a plus • Experience with NoSQL systems is a bonus • CI/CD pipeline design, Infrastructure as Code (Terraform or CloudFormation), and serverless architectures are bonus points • Domain-Driven Design is a bonus • LLM-based application development, including RAG, tool/function calling, MCP servers, or agent orchestration, is a bonus • Experience with component libraries, design systems, and frontend performance optimization is a bonus • AWS certifications are a bonus

🏖️ Benefits

• Remote-first within Germany; hybrid-friendly with a modern office in Mainz • Flexible working hours • Fully paid company workation every year • Learning & development budget: conferences, certifications, and language courses • 50 € hrmony voucher: sports, takeout, shopping, your call • Hardware of your choice • Competitive salary plus performance-based bonus • AI coding tools as a standard part of the engineering workflow • Inclusive, multinational team with 18+ nationalities • Low-hierarchy, open-feedback culture • Radical transparency • Real ownership: you ship features end-to-end and see them in production