BJAK Logo

BJAK

Interaction Designer, HCI

Reposted 21 Days Ago
Be an Early Applicant
Remote or Hybrid
Hiring Remotely in United Kingdom
Mid level
Remote or Hybrid
Hiring Remotely in United Kingdom
Mid level
Design interaction models for AI-driven products focusing on user interaction, feedback, micro-decisions, and creating prototypes for engineering handoff. Collaborate with teams to ensure usability and test designs with real users.
The summary above was generated by AI
About ActAI

There are over 5 billion users using basic applications today such email, notes, tasks, calendar and they're not AI-native. Our mission is to build proactive applications for anyone in the world, who are not used to complex prompting. We aim to bring intelligence to conversations, errands, organising and workflows, with minimal prompting.

Our product focuses on achieving high reliability for long-running workflows, persistent context, and real-world task completion. We believe products will greatly reduce hallucinations.

Our objective is to organise anyone's life, allowing us all to spend time on valuable and meaningful things.

Role

You will design the detailed mechanics of how users interact with A1 - the gestures, states, flows, and micro-decisions that determine whether an AI-driven product feels controlled or confusing.

This role is focused on HCI interaction design: how users give input, receive feedback, supervise AI actions, correct mistakes, and maintain agency over AI-driven workflows.

There are no established playbooks for interaction design in proactive AI products. You will help define new patterns from the ground up.

What You'll Be Doing
  • Design detailed interaction models for AI-driven flows, including how users initiate, monitor, pause, correct, and complete multi-step tasks.

  • Define interaction states for AI interfaces: idle, thinking, acting, waiting, uncertain, interrupted, failed, and recovered.

  • Design human-in-the-loop controls - how users review AI decisions, override actions, and stay informed without micromanaging.

  • Create interaction patterns for delegation, approval, correction, escalation, reversibility, and recovery.

  • Create detailed interaction specifications, annotated flows, and prototypes for engineering handoff.

  • Work with product and ML teams to translate system capabilities and constraints into usable interaction patterns.

  • Test interaction designs with real users to identify where AI behavior creates confusion, distrust, or friction.

  • Contribute to a shared library of HCI interaction patterns that can be reused across the product.

What You Will Need
  • Experience as an interaction designer or senior UX designer with strong interaction design depth.

  • Ability to design at the micro level - states, transitions, edge cases, and failure handling.

  • Strong prototyping skills in Figma or equivalent tools.

  • Systematic thinking - able to map complex AI behavior into coherent user-facing interaction logic.

  • Clear understanding of HCI principles: user control, transparency, feedback, and graceful recovery.

  • Experience working closely with engineers to ensure interactions are implemented as designed.

  • Comfort designing for systems where output is non-deterministic and behavior can vary across sessions.

  • Strong judgment on when users should be guided, interrupted, asked for confirmation, or left alone.

 
How We Work

The best products today in the world were built by small, world class teams. We are a high talent density and hands-on team. We make decisions collectively, move at rapid speed, striking a balance between shipping high quality work and learning. Joining our team requires the ability to bring structure, exercise judgment, and execute independently. Our goal is to put in hands of our users a truly magical product

 
Interview process

For design roles, we expect candidates to submit a portfolio as part of the application process.

If there appears to be a fit, we'll reach out to schedule 2 rounds of interviews and a design assessment.

Applications are evaluated by our team members. Interviews will be conducted via virtual meetings and/or onsite.

We value transparency and efficiency, so expect a prompt decision. If you've demonstrated the exceptional skills and mindset we're looking for, we'll extend an offer to join us. This isn't just a job offer; it's an invitation to be part of a team that's bringing AI to have practical benefits to billions globally.

Similar Jobs

25 Minutes Ago
Remote or Hybrid
Bournville, Birmingham, England, GBR
Entry level
Entry level
Big Data • Food • Hardware • Machine Learning • Retail • Automation • Manufacturing
Plans and executes chemical analysis experiments, establishes analytical methods, validates data, and prepares technical reports and presentations. Ensures data integrity, maintains laboratory standards and equipment, manages assigned project workloads, and collaborates across teams. The role also mentors junior staff and supports laboratory administration while maintaining a safe, organized working environment.
Top Skills: Analytical InstrumentsChemical Analysis TechniquesLaboratory EquipmentStatistical Software
An Hour Ago
Easy Apply
Remote
United Kingdom
Easy Apply
Mid level
Mid level
Cloud • Security • Software • Cybersecurity • Automation
Leads technical direction for GitLab Professional Services engagements from discovery and scoping through implementation and handoff. Designs GitLab architectures, deploys self-managed and cloud environments, executes source-code and CI/CD migrations, and provides DevOps and DevSecOps consulting. Coordinates customers, partners, and internal teams; creates delivery documentation, automation, training, and reusable implementation assets. The role requires strong technical communication, cloud and on-premises infrastructure experience, Terraform and Ansible expertise, migration experience, and the ability to manage complex customer projects remotely.
Top Skills: AnsibleCi/CdCloud ComputingCongregateDevOpsDevsecopsGitlabGitlab Environment ToolkitInfrastructure As CodeOn-Premises InfrastructureTerraform
9 Hours Ago
In-Office or Remote
London, Greater London, England, GBR
Expert/Leader
Expert/Leader
Cloud • Information Technology • Productivity • Security • Software • App development • Automation
Lead the design, development, deployment, and continuous improvement of AI/ML solutions for enterprise customers. Build integrations using Python or JavaScript, APIs, microservices, and enterprise systems; analyze data; automate workflows; address AI risk, privacy, and compliance; and align technical solutions with business goals. Mentor engineers and communicate effectively with technical and non-technical stakeholders in complex, ambiguous environments.
Top Skills: Agent-Based FrameworksAPIsArtificial IntelligenceAtlassian IntelligenceGdprGenerative AiJavaScriptLarge Language ModelsMachine LearningMicroservicesPythonRovo Ai

What you need to know about the London Tech Scene

London isn't just a hub for established businesses; it's also a nursery for innovation. Boasting one of the most recognized fintech ecosystems in Europe, attracting billions in investments each year, London's success has made it a go-to destination for startups looking to make their mark. Top U.K. companies like Hoptin, Moneybox and Marshmallow have already made the city their base — yet fintech is just the beginning. From healthtech to renewable energy to cybersecurity and beyond, the city's startups are breaking new ground across a range of industries.

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account