Senior Backend Engineer

Job not on LinkedIn

🕒 May 26

🏄 California, New York – Remote

🏄 California – Remote 🗽 New York – Remote

⏰ Full Time

🟠 Senior

🔙 Backend Engineer

👻 Ghost score 23%

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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decircle

WebsiteLinkedInAll Job Openings

1 - 10 employees

Founded 2019

📣 Marketing

📦 Logistics

💼 Consulting

Marketing • Logistics • Consulting

Decircle is a talent partner specializing in staffing and recruiting for decentralized organizations and projects related to Web3. As a boutique recruitment agency, Decircle focuses on identifying and attracting talent in the blockchain and Web3 sectors, fostering connections within the community of decentralization enthusiasts and guiding them in finding their roles in the evolving decentralized landscape.

📋 Description

• Design, build, and maintain scalable async backend services and APIs in Python. • Own core systems end-to-end: architecture, implementation, testing, deployment, and operational excellence. • Build systems for multi-tenant workflows, fine-grained permissions, integrations, and agent-driven product experiences. • Write and review database migrations and row-level security policies in a compliance-sensitive environment. • Improve reliability, observability, and performance across critical paths. • Collaborate closely with product, design, and research to translate user needs into robust backend architecture. • Contribute to engineering standards, code review culture, and team ways of working. • Help shape technical direction in a fast-moving environment with evolving product requirements.

🎯 Requirements

• 5+ years of professional software engineering experience with substantial backend development experience. • Strong production experience building backend services in Python. • Strong experience with asynchronous programming in Python, such as asyncio, async database access, or high-concurrency service development. • Deep PostgreSQL experience, including schema design, query tuning, transactions, and production migrations. • Experience designing or implementing multi-tenant data isolation and access control. • Strong software design fundamentals: modular architecture, testing discipline, maintainability, and clear interface design. • Experience with Redis or similar infrastructure for caching, queues, rate limiting, or pub/sub. • Ability to independently own projects and make sound technical tradeoffs in ambiguous environments. • Strong communication skills and a collaborative, low-ego working style. • Strongly preferred: Experience with FastAPI, Starlette, Litestar, or another modern Python web framework. • Experience building backend systems for AI products, agentic workflows, or LLM-powered applications, such as RAG pipelines, tool-calling agents, or orchestration layers. • Experience with security-sensitive or enterprise systems, including access controls, audit logging, and compliance-driven engineering constraints. • Experience with OpenTelemetry or comparable production observability tooling. • Nice to have: Experience with pgvector, SurrealDB, or other vector retrieval systems. • Exposure to SOC 2, fintech, healthtech, or other regulated environments. • Experience with agent runtimes, sandboxing, or MCP integrations. • Familiarity with distributed systems, asynchronous processing, and performance optimization. • Startup or zero-to-one experience. • Comfort reading TypeScript or React during frontend-backend integration work.

🏖️ Benefits

• Work on technically challenging products at the intersection of AI, security, and enterprise software. • Join a small, senior team with deep experience in research, distributed systems, and production engineering. • Have meaningful influence over architecture, product direction, and engineering culture. • Build products with real-world impact, not just prototypes.