Full Stack Engineer - AI Systems

Build an AI product from the ground up.Most AI applications today are still glorified chatbots.We're building something different.A1 is creating an AI-native product that can plan, reason, remember, use tools, recover from failures, and proactively help users complete real-world tasks. Think beyond prompts and chat—this is about building reliable AI systems people can depend on every day.We're looking for a Full Stack Engineer – AI Systems who wants to solve difficult engineering problems at the intersection of product, distributed systems, and LLMs.What you'll be buildingEnd-to-end AI-native product features across frontend, backend, and AI systemsAgentic workflows capable of planning, tool usage, multi-step execution, and recoveryProduction-grade integrations with LLMs, memory, RAG, and external toolsReal-time AI experiences with streaming responses and low latencyReliable systems with strong observability, evaluation, and fallback mechanismsWhat we're looking for✔ Strong Full Stack Engineering experience (Next.js / React, Python, Node.js✔ Experience building production AI applications using LLMs, RAG, or AI agents✔ Strong system design and API architecture fundamentals✔ Someone who thrives in ambiguity, takes ownership, and enjoys building from scratchWhy join?Build a category-defining AI product from day oneHigh talent-density team with a flat structure and no unnecessary bureaucracySignificant ownership—you'll shape both the product and the engineering directionRemote-first work environmentSolve some of the hardest problems in production AI todayWork alongside engineers passionate about building reliable AI systems, not demosHow To ApplySubmit your application by emailing a detailed copy of your updated resume in MS Word Format to Lin Jin Sen (EA Personnel Reg. No. R26159541, Achieve Career Consultant Pte Ltd EA Licence No. 05C3451)by clicking the “Apply Now” or email to [email protected] for a confidential discussionCurrent & Expected SalaryReason(s) for leavingNotice Period / Availability to commence workEqual Opportunity StatementYOUR SUCCESS IS OUR ACHIEVEMENT! By submitting any application or résumé to us, you will be deemed to have agreed and consented to us collecting, using, retaining and disclosing your personal information to prospective employers for their considerationCessation Of Collection Of Full NRIC Numbers: In compliance with the Personal Data Protection Act and commitment to protect candidates’ personal data, Achieve Group will cease to collect, process or use full NRIC numbers during our screening and job application process. Kindly ensure your resumes provided to us does not contain your full NRIC number and full home address during your job application.We regret that only shortlisted candidates will be notified.