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Senior Backend / Fullstack Engineer(m/w/x)
Building backend systems for data synchronization between Notion and external databases, creating scalable storage solutions with Supabase for DeFi abstraction. 5+ years production backend services and Notion API experience required. Work on blockchain abstraction for financial primitives.
Requirements
- 5+ years of experience building production-level backend services
- Strong proficiency in JavaScript / TypeScript
- Experience with Python, Go, Rust, or Java
- Solid knowledge of SQL databases and 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
Tasks
- Design and implement backend systems for data synchronization between Notion and external databases
- Model hierarchical data structures and create scalable storage solutions using Supabase
- Build tools to automate the Atlas edit workflow and detect document structure changes
- 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 using Model C Protocol Servers
- Advocate for and implement AI-assisted tooling within the workflow
Work Experience
- 5 years
Education
- Vocational certificationOR
- Bachelor's degreeOR
- Master's degree
Languages
- English – Business Fluent
Tools & Technologies
- JavaScript
- TypeScript
- Python
- Go
- Rust
- Java
- SQL
- Notion APIs
- Node.js
- Supabase
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Senior Backend / Fullstack Engineer(m/w/x)
Building backend systems for data synchronization between Notion and external databases, creating scalable storage solutions with Supabase for DeFi abstraction. 5+ years production backend services and Notion API experience required. Work on blockchain abstraction for financial primitives.
Requirements
- 5+ years of experience building production-level backend services
- Strong proficiency in JavaScript / TypeScript
- Experience with Python, Go, Rust, or Java
- Solid knowledge of SQL databases and 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
Tasks
- Design and implement backend systems for data synchronization between Notion and external databases
- Model hierarchical data structures and create scalable storage solutions using Supabase
- Build tools to automate the Atlas edit workflow and detect document structure changes
- 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 using Model C Protocol Servers
- Advocate for and implement AI-assisted tooling within the workflow
Work Experience
- 5 years
Education
- Vocational certificationOR
- Bachelor's degreeOR
- Master's degree
Languages
- English – Business Fluent
Tools & Technologies
- JavaScript
- TypeScript
- Python
- Go
- Rust
- Java
- SQL
- Notion APIs
- Node.js
- Supabase
Like this job?
BetaYour Career Agent finds similar jobs for you every day.
About the Company
deCircle
Industry
IT
Description
The company aims to simplify blockchain interactions by creating an abstraction layer for DeFi, enabling access to on-chain financial primitives.
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