Systems Architect and Full-Stack Engineer
This is an architecture role that writes code, not a coding role that occasionally diagrams. The hard problems here are not framework problems.
Conceptual Challenges:
- What is the right abstraction for behavior that must stay identical across brands with wildly different experiences?.
- Where does a system have to be deterministic and reproducible, and where can human judgment live?.
- What belongs in a shared contract versus a local implementation?.
- How do you make a system's invariants checkable rather than aspirational?.
Expectations:
- We need someone who thinks in systems and concepts first, and who can then build the thing.
System architecture and concept design:
- Define service boundaries, data models, and contracts between components.
- Design seams that let the same code run locally and hosted without a rewrite.
- Turn fuzzy capabilities into clear models of core entities and rules.
- Apply MIT concept design methodologies to agentic system design.
- Design abstractions that keep behavior consistent across brands with very different experiences.
- Decide where systems must be deterministic and where human judgment can apply.
- Make architecture decisions alongside founders with product and engineering backgrounds.
Verification and documentation:
- Plan up front how each system will prove its correctness, rather than retrofitting tests.
- Make system invariants checkable through code and tests.
- Write specifications, decision records, and product invariants in RFC 2119 language.
Agent-driven development:
- Direct AI agents to build features and review their output in depth before merging.
- Write specs that agents can execute and reviewers can check.
- Maintain agent instructions and skills as first-class artifacts.
- Run independent adversarial reviews before opening pull requests.
- Catch plausible but wrong results, such as silent safety gates, empty version pins, or hollow dependency directories.
Location: Remote - Argentina, Brazil, Chile, Colombia, Costa Rica, Mexico, Paraguay, Peru, Uruguay
Skills required for this job:
- AI Systems
- CI/CD
- Claude Code
- Python
- TypeScript
- WhatsApp Cloud API
