Mid-Senior Level Backend Engineer (Rust, LLM) - Civic Tech

Capua United Kingdom
Remote
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AI Summary

Join a high-growth civic tech company as a mid-senior level backend engineer to build scalable infrastructure for participatory decision-making. Design and implement backend systems and APIs using Rust, and contribute to the architecture of a platform that supports complex use cases.

Key Highlights
Design and implement backend systems and APIs using Rust
Contribute to the architecture of a platform that supports complex use cases
Work with modern technologies such as Rust and LLM-powered systems
Key Responsibilities
Design and implement backend systems and APIs using Rust
Develop and optimize LLM-driven workflows
Contribute to the architecture, development, and maintenance of core infrastructure
Technical Skills Required
Rust LLM-powered systems APIs Authentication Distributed systems
Benefits & Perks
Competitive salary (£55K–£70K)
Fully remote working with flexible hours
Opportunity to work on meaningful products with real societal impact

Job Description


High-Growth Civic Tech Company | Mid-Senior level Back-End Engineer | Fully Remote (Preferably Scotland-based) | £55 - 70K + equity


About the Company:

We’re partnered with a mission-driven technology company building digital platforms that empower citizens and strengthen democratic participation. Their platform helps governments and communities co-create policies, run deliberative processes, and make collective decisions in a transparent and inclusive way. They combine technology with real-world impact to help organisations make better decisions, with a strong focus on civic tech, digital governance, and user-centred design.


About the Role:

They are currently seeking a driven Backend Engineer to join their team and play a key role in building the core infrastructure powering a platform designed for large-scale, participatory decision-making. This role sits at the intersection of backend engineering, infrastructure, and emerging AI workflows, offering the opportunity to work with modern technologies such as Rust and LLM-powered systems. You will play a key role in designing scalable backend systems, building robust APIs, and contributing to the architecture of a platform that supports complex, real-world use cases.


Responsibilities:

  • Design and implement backend systems and APIs using Rust, following modern engineering best practices.
  • Develop and optimise LLM-driven workflows to support structured decision-making and processing of user input at scale.
  • Contribute to the architecture, development, and maintenance of core infrastructure.
  • Collaborate closely with frontend engineers, designers, and policy experts to deliver end-to-end product features.
  • Ensure systems are scalable, performant, and maintainable as the platform grows.


Requirements:

  • 3-6 years of professional development experience.
  • Experience building backend services using Rust.
  • Strong understanding of APIs, authentication, and distributed systems.
  • Experience working with or integrating LLM-based tools or workflows.
  • Familiarity with modern development practices, including Git and CI/CD.
  • Interest in building impactful products within civic tech or social impact space.
  • Experience with the Axum framework is a plus.
  • Experience with Kubernetes and cloud infrastructure is a plus.
  • Familiarity with observability tools such as Prometheus or Grafana is a plus.
  • Experience in data processing, machine learning, or natural language systems is a plus.


Compensation and benefits:

  • Competitive salary (£55K–£70K).
  • Fully remote working with flexible hours.
  • Opportunity to work on meaningful products with real societal impact.
  • Collaborative, mission-driven team environment.
  • Modern tech stack with strong ownership and growth opportunities.
  • Equity package for full time employees.

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