Backend Engineer – Rust & Scalable Data Infrastructure

iO Associates; Islington (MA); Hybrid; USD 115,000 - 149,000; Full time

Job summary

iO Associates is seeking a Backend Software Engineer for a London hybrid role. You will design and build distributed systems in a Rust stack with Python at API boundaries, targeting scalable data infrastructure and robust API design.

You’ll join a small, autonomous team, owning architectural decisions and shaping the product, with emphasis on reliability, performance, and cross-functional collaboration.

Qualifications

• Minimum 2 years of backend development experience.
• Experience designing and building distributed systems.
• Ability to work in a Rust stack with Python at the boundaries.
• Familiarity with data pipelines and API design.

Responsibilities

• Design and build distributed systems, storage infrastructure, and platform primitives for the product.
• Own meaningful architectural decisions and ensure reliable services as the product scales.
• Collaborate across teams to shape features with limited top-down instruction.

Skills

Rust

Python

Systems thinking

Software craft

Uncertainty reasoning

AI-assisted development

Collaboration

Tools

Kafka

PostgreSQL/TimescaleDB/PostGIS

gRPC/protobuf

Kubernetes

Job description

iO Associates is seeking a Backend Software Engineer for a London hybrid role. You will design and build distributed systems in a Rust stack with Python at API boundaries, targeting scalable data infrastructure and robust API design.

You’ll join a small, autonomous team, owning architectural decisions and shaping the product, with emphasis on reliability, performance, and cross-functional collaboration.