Staff Engineer (LLM Systems)

TL;DR

Staff Engineer (LLM Systems): Leading the architecture and delivery of foundational systems across hirify.global’s AI and data platform, including production agent systems, evaluation pipelines, anomaly detection, cost infrastructure, and orchestration patterns. Focus on building production-grade LLM/agent workflows and relational data systems at real scale with an emphasis on quality evaluation, observability, cost control, and recovery patterns.

Location: Remote (European-timezone overlap with the UK working day); London, GB

Company

hirify.global builds an enterprise community intelligence and management solution for Discord and Reddit.

What you will do

• Lead architecture and delivery of foundational systems across hirify.global’s AI and data platform.
• Build production agent systems, evaluation pipelines, and anomaly detection.
• Own data models, orchestration patterns, and internal frameworks that help the team ship faster.
• Design and evolve relational systems at scale with a focus on PostgreSQL performance and reliability.
• Shape practical approaches to agent behavior, evaluation, quality, observability, cost control, and recovery.
• Act as a technical reference point by writing clear PRs/notes and making sound architectural decisions.

Requirements

• 10+ years of professional software engineering experience, operating at staff level.
• Deep, at-scale production experience with relational data (indexing, partitioning, schema design, query performance, migrations).
• Proven experience building or leading foundational technical work that other teams/products depend on (platform/data/pipelines/evaluation/cost infrastructure/architecture refactors).
• Production AI/LLM experience focused on real engineering problems (quality, evaluation, cost, observability, edge cases), not demos or prompt experiments.
• Essential: at-scale experience with customer-facing LLMs, specifically testing and iterating based on real end-user interactions.
• Ability to work fully remote with meaningful overlap with the UK working day (European-timezone team).

Culture & Benefits

• Remote-first with flexible working hours and expectation of overlap with the UK working day.
• Shipping and learning from production with tight feedback loops.
• Small, focused squads working closely with product and design.
• 25 days annual leave plus UK public holidays; stock options; home office budget after probation.
• Mental health support via Spill and twice-yearly company meet-ups.

Hiring process

• Initial screening call with a Talent Partner.
• Engineering conversation and a technical pairing/deep dive with an AI-focused iterative task.
• Staff-level technical interview with the CTO and final conversation with senior leadership.

Salary: Highly competitive basic salary (full details shared at initial interview stage)