Bjak

Full Stack Engineer, AI systems

Remote, United States remote Entry Salary not listed
remote 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
We are looking for a Full Stack Engineer - AI Systems to build the product layer that turns these capabilities into usable, production-grade workflows. This includes designing how agents operate, fail, recover, and deliver consistent value to users.
Focus
Build end-to-end product features across frontend, backend, and AI integrations

Design agent workflows that handle planning, tool use, failure, and recovery across multiple steps.

Integrate LLMs, memory, and external tools into systems that behave reliably under real-world conditions

Design real-time AI interactions with streaming, partial results, and tight latency constraints

Improve system reliability, observability, and fallback mechanisms

Collaborate closely with ML, backend, and product teams to ship features end-to-end

Continuously iterate based on real usage and failure modes

Ideal Experiences
Strong experience in full stack engineering (frontend + backend)

Solid understanding of system design and API architecture

Experience working with LLMs, RAG systems, or AI-powered applications

Ability to handle ambiguity and make pragmatic engineering decisions

Strong ownership - able to take features from idea to production

Comfort working in fast-moving environments with evolving requirements

Outcomes
Own and ship AI-native product features that move beyond chat into persistent, goal-driven workflows

Design and deploy agent workflows that reliably complete multi-step tasks across tools and sessions

Reduce latency and improve responsiveness of AI interactions while maintaining output quality

Build robust fallback and recovery mechanisms for LLM and tool failures in production environments

Improve the success rate and reliability of AI-driven workflows through iteration, evaluation, and monitoring

Establish patterns and abstractions for integrating LLMs, memory, and external tools into scalable product systems

Contribute to a product experience where AI feels proactive, consistent, and dependable over time

Tech Stack
Next.js

Python

NodeJs

Pytorch

OpenAI / Anthropic / open-source LLMs

SQl & noSQL

Kubernetes

Docker

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.

Role
Technology & IT API integration MySQL Python SQL remote

Likely questions

  1. Tell us about work you have done that is close to the Full Stack Engineer, AI systems role.
  2. How would you approach your first 30 days at Bjak?
  3. Which of API integration, MySQL and Python 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 stay organised and communicate clearly when working remotely?

Prepare before the call

  • A recent example that proves your experience with API integration, MySQL and Python.
  • 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 Full Stack Engineer, AI systems role because I can bring practical experience in API integration, MySQL and Python, learn the team quickly, and contribute to the outcomes Bjak needs from this hire.

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