Backend Engineer – AI
BJAKSingapore1 day ago
Full-timeEngineering, Information Technology
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A1 is a self-funded AI group, operating in full stealth. We’re building a new global consumer AI application where backend systems are not glue - they are the control plane that connects models, data, users, and product experiences.
This is a founding backend role. You will design and build the systems that orchestrate models, manage prompts and evaluation, and power every AI interaction users experience - under real-world constraints like latency, cost, failures, and scale.
Why This Role Matters
We operate as a dense, senior, high-performance team. We value clarity, speed, craftsmanship, and relentless ownership. We behave like founders — we build, ship, iterate, and hold ourselves to a high technical bar.
If you value excellence, enjoy building real systems, and want to be part of a small team creating something globally impactful, you’ll thrive here.
About A1
A1 is a self-funded, independent AI group, focused on building a new consumer AI product with global impact. We’re assembling a small, elite team of ML and engineering builders who want to work on meaningful, high-impact problems.
This is a founding backend role. You will design and build the systems that orchestrate models, manage prompts and evaluation, and power every AI interaction users experience - under real-world constraints like latency, cost, failures, and scale.
Why This Role Matters
- You power every AI interaction users experience
- You shape how models are orchestrated, evaluated, and improved
- You directly affect cost, latency, and reliability
- You build real production AI infrastructure
- Design and implement backend services for AI-powered apps
- Integrate LLMs, vision, speech, and other models
- Build orchestration pipelines (agents, tools, workflows)
- Implement prompt management and versioning
- Build evaluation, logging, and feedback systems
- Design scalable APIs for mobile and web clients
- Handle retries, caching, rate limits, and fallbacks
- Ensure security, privacy, and cost control
- 4+ years backend engineering experience
- Hands-on AI model integration experience
- Strong proficiency in Python, Node.js, or Go
- Experience designing REST/gRPC APIs
- Understanding of AI latency and cost tradeoffs
- Built AI systems used in production
- Experience with RAG, vector DBs, or agent frameworks
- Designed evaluation or monitoring systems
We operate as a dense, senior, high-performance team. We value clarity, speed, craftsmanship, and relentless ownership. We behave like founders — we build, ship, iterate, and hold ourselves to a high technical bar.
If you value excellence, enjoy building real systems, and want to be part of a small team creating something globally impactful, you’ll thrive here.
About A1
A1 is a self-funded, independent AI group, focused on building a new consumer AI product with global impact. We’re assembling a small, elite team of ML and engineering builders who want to work on meaningful, high-impact problems.
Key Skills
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