BJAK Logo

BJAK

Full Stack Engineer, AI systems

Posted 6 Days Ago
Be an Early Applicant
Remote
Hiring Remotely in Portugal
Senior level
Remote
Hiring Remotely in Portugal
Senior level
Build end-to-end AI-native product features across frontend, backend, and model integrations. Design and deploy agent workflows, integrate LLMs, memory, and external tools, improve real-time streaming, latency, reliability, observability, and fallback mechanisms, and iterate on failures to deliver dependable, multi-step task completion in production.
The summary above was generated by AI
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.

Similar Jobs

15 Hours Ago
Easy Apply
Remote or Hybrid
Easy Apply
Senior level
Senior level
Enterprise Web • Hardware • Internet of Things • Software
Embed with manufacturing customers to design, build, and deploy Tulip solutions. Lead OT/IT integrations (PLCs, MES/ERP, quality systems), troubleshoot production issues, and deliver scalable, production-ready applications. Advise on architecture, document solutions, and represent customer needs to Product and Engineering.
Top Skills: Cloud-NativeEmbedded AiErpMachine Data IntegrationsMesNo-Code PlatformPlcsQuality SystemsTulip Frontline Operations Platform
15 Hours Ago
Easy Apply
Remote or Hybrid
Easy Apply
Expert/Leader
Expert/Leader
Artificial Intelligence • Cloud • Security • Software • Cybersecurity
Serve as Datadog expert for partner channel: onboard, train, and enable partner technical teams; support migrations, modernization, demos, proofs of value; advocate partner technical needs internally; collaborate with product, engineering, and partners to drive adoption and prioritize features.
Top Skills: Alibaba CloudAnsibleApmAppdynamicsAWSAzureChefCloud FoundryDatadogDockerDynatraceGCPGitlabGoJavaScriptJenkinsKubernetesLogsNew RelicNpmOpenshiftPerlPHPPuppetPythonRubySplunkSyntheticsTerraform
Yesterday
In-Office or Remote
Senior level
Senior level
Artificial Intelligence • Legal Tech
Lead GC AI's EMEA expansion from zero-to-one: own regional revenue, close enterprise deals, hire and lead sales and cross-functional teams, drive localized marketing and demand generation, and implement scalable sales processes and KPIs to build a repeatable European business.
Top Skills: Ai-Driven SoftwareLegal Text Processing

What you need to know about the Belfast Tech Scene

If asked to name the birthplace of the RMS Titanic, you might not say Belfast. Similarly, if asked to name Europe's leading destination for foreign direct investment in new software development, Belfast might not come to mind. Yet, both are true. The city has emerged as a tech powerhouse, recently ranked among the best in the U.K. for tech careers — especially for software developers. It also leads the U.K. with the highest percentage of software development jobs advertised.

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account