Bjak

Technical Product Manager, AI Systems

United Kingdom full-time Mid Salary not listed
full-time Mid level Technology & IT Curated
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About the role

About A1
There are over 5 billion users using basic applications today such email, notes, tasks that are not AI-native. Our mission is to build a proactive smart assistant for everyday users 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. The system must handle multi-step reasoning, interact with external tools, and remain reliable despite non-deterministic model behavior. Our objective is to help users complete tasks daily enjoyable with over ~90%* reduced time.
Role
This is a deeply technical, hands-on role. Work directly with engineers on system design, evaluation, and trade-offs-defining requirements, but shaping how the system works for global users. You work at the intersection of user needs, model capability, and system constraints, and are responsible for turning AI potential into real, reliable behavior in a real-world application.
What You'll be Doing

Research and define end-to-end AI system requirements from capability to behavior to user impact

Translate model capabilities, data constraints, and evaluation results into clear product and system decisions

Make hard trade-offs across quality, latency, cost, reliability, and UX

Work closely with ML, backend, and mobile engineers on system design, evaluation, and iteration

Define and evolve evaluation frameworks across offline metrics, online experiments, and human feedback

Drive execution with clear specs, strong judgment, and disciplined prioritization

Ensure systems ship quickly, safely, and reliably, with strong feedback loops

Own product quality end-to-end - correctness, predictability, and user trust

What You Will Need
Technical foundation

Strong grounding in computer science fundamentals, including algorithms, data structures, and system design.

Solid understanding of ML fundamentals and how modern AI systems behave in production.

Comfort reading, reviewing, and discussing technical design documents.

AI & ML experience

Hands-on exposure to AI-powered products, including LLM-based systems.

Experience working with model evaluation, prompt or pipeline iteration, and feedback loops.

Strong intuition for model limitations, hallucinations, bias, and drift.

Product leadership

Significant experience owning complex, technical products end-to-end.

Proven ability to work closely with senior engineers and ML teams.

Strong judgment and decision-making ability in ambiguous, fast-moving environments.

Ability to balance ambition with technical and operational reality.

Nice to have

Experience shipping AI-heavy consumer products.

Background as an engineer or highly technical product manager.

Experience defining evaluation metrics for ML systems.

Strong intuition for AI UX patterns and failure handling.

Prior experience in zero-to-one product environments.

Outcomes

Product strategy clearly aligns AI capabilities with user needs and company priorities.

AI features deliver real value, are understandable, predictable, and trusted by users.

Decisions balance quality, speed, cost, and reliability effectively under uncertainty.

Roadmaps and priorities are clear, with fast iteration based on real user feedback.

Teams are aligned, focused, and able to execute on AI product goals with minimal friction.

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
If there appears to be a fit, we'll reach to schedule 3, but no more than 4 interviews.
Applications are evaluated by our technical 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.
Originally posted on Himalayas

Interview prep

Walk in with sharper answers.

Use this as a quick practice sheet before you speak with the employer.

Mid
Technology & IT Sales Technical Product Manager Systems Mid level

Likely questions

  1. Tell us about work you have done that is close to the Technical Product Manager, AI Systems role.
  2. How would you approach your first 30 days at Bjak?
  3. Which of Sales, Technical and Product have you used recently, and what did it help you achieve?
  4. Describe a time you solved a problem without waiting to be told exactly what to do.
  5. How do you handle busy days, changing priorities, or pressure at work?

Prepare before the call

  • A recent example that proves your experience with Sales, Technical and Product.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the Technical Product Manager, AI Systems role because I can bring practical experience in Sales, Technical and Product, learn the team quickly, and contribute to the outcomes Bjak needs from this hire.

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