Senior Backend / Fullstack Engineer
deCircle · Remote · Posted May 15, 2025
- Who can apply
- Germany
Remote job; berlin, Germany
- Pay
- Not stated in the posting
- How you’d be employed
- Employee
- Level
- Senior
- Location in the posting
- Remote job · berlin, Germany
- Skills required
- JavaScript, TypeScript, Node.js, SQL, Supabase, APIs, Database design
Analyzed from the full posting. Quotes are the posting’s own words.
From the posting
We are looking for a Senior Backend / Fullstack Engineer to join our team and help us build a robust data integration and automation platform around our internal knowledge system, Atlas. This role will focus on backend systems, database design, and API orchestration, with a strong emphasis on data synchronization and workflow automation.
You will be working with technologies like Notion, Supabase, Node.js, and various third-party APIs to automate and improve how data is structured, accessed, and maintained across platforms.
You’ll also contribute to the development of a custom knowledge management tool that goes beyond the limitations of Notion, enabling complex data queries and improved interoperability with AI assistants and future systems.
Key Responsibilities
- Design and implement backend systems for data synchronization between Notion and external databases/workflows.
- Model hierarchical data structures and implement scalable storage solutions (e.g., Supabase).
- Build tools to automate the Atlas edit workflow, detecting document structure changes and generating proposals.
- Develop integrations with third-party APIs and orchestrate data flows across services.
- Collaborate with cross-functional teams to define system architecture and ensure technical alignment.
- Research and contribute to building a custom knowledge management platform (e.g., using Model C Protocol Servers).
- Advocate for and implement AI-assisted tooling within the workflow.
- 5+ years of experience building production-level backend services.
- Strong proficiency in JavaScript / TypeScript.
- Experience with Python, Go, Rust, or Java is a plus.
- Solid knowledge of SQL databases, with ability to design and query relational and graph-based schemas.
- Experience working with Notion APIs (Node.js) and orchestrating third-party APIs.
- Familiarity with pagination, rate limits, and structured data formats.
- Ability to design and implement efficient algorithms.
- Experience with Supabase or equivalent modern DB platforms.
- Strong communication and technical documentation skills.
- Comfortable working with AI assistants and integrating them into daily workflows.
- Research mindset – open to exploring and integrating new technologies and protocols.