Latest AI JobsBrowse Jobs
bjakcareer logo

Product Engineer, AI Email App

bjakcareerUnited KingdomActAI Engineering
Apply on company site
Salary
Not listed
Job type
Full-time
Work mode
Remote
Experience
Senior
Posted
28 Sept 2026
Status
Open · checked 7d ago

About this role

Based in the United Kingdom, this Product Engineer position at bjakcareer focuses on building an AI-native email application to simplify proactive daily workflows. The role suits a hands-on, deeply technical professional who can bridge user needs, engineering limits, and machine learning capabilities.

Role Overview

This opening at bjakcareer operates at the intersection of technical constraints, model performance, and user experience within the United Kingdom. Team members build proactive applications designed to reduce complex prompting for millions of users relying on standard tools like email, calendars, and notes. The position requires close collaboration with engineering and machine learning specialists to define system behavior, establish performance measures, and continuously refine long-running workflows with high reliability.

Key Responsibilities

Formulate end-to-end specifications for artificial intelligence functions, covering user experience, system execution, and model performance.
Translate technical boundaries, testing results, and model features into concrete product choices.
Balance trade-offs between latency, safety, cost, reliability, quality, and user experience.
Collaborate directly with client, backend, and machine learning engineers on architecture design, testing, and iteration.
Create and mature assessment frameworks utilizing human feedback, online experiments, and offline metrics.
Establish quality standards and feedback mechanisms for artificial intelligence experiences.
Direct execution through prioritization, detailed specifications, and technical reasoning.
Spot failure points and guarantee predictable behavior and graceful recovery in systems.
Manage overall product reliability, correctness, usefulness, and user trust.

Requirements

Demonstrate solid computer science foundations and system design expertise.
Possess a strong grasp of modern machine learning and production-level artificial intelligence behavior.
Read and comprehend technical designs, system architectures, and engineering discussions.
Understand model limitations, evaluation methods, failure modes, and hallucination reduction.
Bring significant background managing complex, technical products from start to finish.
Gain hands-on practice with LLM-based systems and artificial intelligence-driven products.
Work with AI system iteration, prompting, experimentation, and model evaluation.
Structure ambiguous challenges into measurable goals, clear requirements, and actionable plans.

Nice to Have

Experience launching consumer products heavily reliant on artificial intelligence.
Previous background operating as a technical product manager or software engineer.
History establishing evaluation metrics for machine learning systems.
Intuition regarding artificial intelligence user experience patterns and failure management.
Background working in zero-to-one product environments.

Skills and Tools

Large Language Models (LLMs)
System Design
Offline and Online Evaluation Metrics
AI UX Patterns
Machine Learning Production Systems

About the Company

bjakcareer operates as a compact, high-talent-density team focused on hands-on execution and broad individual ownership. The organization values fast decision-making, minimal process, strong engineering fundamentals, and independent judgment. Team members work closely together to build proactive, AI-native alternatives to standard productivity tools for global users.

How to Apply

Interested candidates should apply on the official company careers page.

Skills and tech stack

Questions candidates ask

Where is the job located?

The position is located in the United Kingdom.

What type of product will I be working on?

You will work on an AI-native email application and proactive tools designed to handle conversations, workflows, and daily tasks with minimal prompting.

What kind of background is preferred for this role?

An engineering background is noted as a strong plus, alongside significant experience managing complex technical products and LLM-based systems.

How many interview rounds should candidates expect?

Candidates who fit the criteria will participate in three to no more than four interviews conducted via virtual meetings and/or onsite.

What is the primary technical focus of the role?

The role requires deep technical involvement in system design, model limitations, evaluation frameworks, failure mode identification, and balancing quality, latency, cost, and reliability.

Ready to apply?

The application is on the official bjakcareer careers page.

Apply on company site