About
SG Systems
A Singapore-based forward-deployed engineering practice for SEA applied AI.
Who we are
SG Systems delivers applied AI for Southeast Asian enterprises and the Systems Integrators that serve them. We embed alongside your team, build on a reusable engine designed for SEA constraints — PDPA-compliant, locally-tuned, channel-native — and ship operational outcomes in weeks, not quarters.
What we believe
Outcomes over hours. We sell defined results on fixed timelines, not hourly retainers that drift.
Embedded, not advisory. We work alongside your developers and ship code into your environment. We don't drop decks.
Locally-tuned, regionally-built. SEA-specific regulation, language, and channel realities are designed into the engine from the start, not retrofitted from Western AI products.
Disciplined scope. Every engagement begins with Discovery, so work and price are calibrated before the build. No surprise quotes.
Own the result, retain the platform. Clients own the deliverable end-to-end; SG Systems retains the underlying engine, libraries, and patterns.
How we operate
SG Systems is a small, deliberately-scoped delivery practice. Engagements are led by the founding engineer; contract delivery support is added on a partner basis as engagements demand. We do not scale by hiring ahead of demand, and we do not staff engagements we cannot deliver.
Shipped portfolio
Alongside the consulting practice, SG Systems builds and operates AI products. The current portfolio:
Tandemu
AI teammate for development teams.
Memory, coding-style adaptation, and DORA visibility for engineering leads.
tandemu.devAnswerRank
Answer-engine optimisation.
Track how ChatGPT, Claude, Perplexity, and Gemini talk about your brand. Built for indie founders and agencies.
answerrank.appSubstaff
Hire AI employees that do real work.
Goal + budget in, planned & executed work out.
substaff.appThe operator
SG SYSTEMS PTE. LTD. is founded and operated by Sebastian Grebe, a senior engineer with 10+ years shipping production systems across payments, marketplaces, and consumer platforms.
Author of two editions of Full-Stack Web Development with GraphQL and React (Packt Publishing). More personal background at sebastian-grebe.com.