About the Role
About CONXAI
CONXAI has built a no-code, agentic AI platform for the Architecture, Engineering and Construction (AEC) and physical industries, focused on knowledge-automation. We automate high-stakes, knowledge-intensive workflows traditionally trapped in siloed data, fragmented tools and tacit (undocumented) human expertise.
Our multi-agent systems perform complex reasoning in the physical world; and transform bespoke, service-heavy processes into scalable Service-as-a-Software automation.
CONXAI is trusted by some of the leading AEC companies in Europe, US, LATAM and Japan.
Your Role
As a Senior Frontend Engineer, you will play a key role in shaping and evolving a modern, scalable frontend architecture within a complex B2B AI platform.
You won’t just implement features — you’ll design systems. You’ll think in terms of structure, boundaries, and long-term sustainability. Your focus will be on building robust, maintainable solutions that can grow with the product and the organization.
This role is ideal for someone who:
Takes ownership of architectural decisions
Values clean abstractions and clear domain boundaries
Thinks beyond short-term delivery toward long-term scalability
Enjoys collaborating across teams to align technical direction
Sees frontend engineering as system design, not just UI implementation
You will influence how the frontend evolves, contribute to technical standards, and help ensure the platform remains scalable, testable, and maintainable as it grows.
What You’ll Do
Architect & Build at Scale
Develop complex B2B features using React 18 + TypeScript
Work within a structured Feature-Sliced Design (FSD) architecture
Design clean domain boundaries and public APIs between layers
Build reusable features, widgets, and domain entities
Maintain architectural integrity using dependency rules and validation tools
Deliver High-Quality Code
Write type-safe, production-grade TypeScript
Implement unit & integration tests (Jest, React Testing Library)
Optimize performance, bundle size, and rendering efficiency
Implement robust error handling and monitoring
Build Advanced Product Capabilities
Implement efficient server-state management with TanStack Query
Work on complex UI patterns
Collaborate on AI feature integration (LLM workflows, structured outputs)
Collaborate & Lead
Work closely with backend engineers on RESTful APIs
Contribute to architectural decisions and technical planning
Conduct thoughtful code reviews
Mentor mid/junior engineers on architecture and best practices
Our Tech Stack
React 18 + TypeScript 5.5+
Feature-Sliced Design (layered architecture)
TanStack Query + Zustand
Material-UI (MUI v5) + Emotion
SCSS Modules
Webpack 5
AWS Amplify & Cognito
Jest + React Testing Library + MSW
CI/CD pipelines with automated testing
What We’re Looking For
Required
5+ years of professional frontend experience
Advanced React & TypeScript expertise
Strong architectural thinking (FSD, Clean Architecture, or similar)
Experience with modern state management
Strong testing mindset (unit & integration)
Experience integrating REST APIs
Strong written and verbal English communication skills
High standards for code quality and maintainability
Highly Valued
Experience building complex B2B SaaS products
Knowledge of scalable frontend architecture patterns
Experience with performance optimization
Experience with AWS (Cognito / Amplify / S3 / CloudFront)
Nice to Have
Experience in AEC, construction, or document-heavy domains
Exposure to AI/ML integrations in frontend applications
PDF rendering or document processing experience
Why CONXAI
Edge of Innovation: Be at the absolute forefront of AI in the construction tech space
High Autonomy: Own the product strategy and shape a product that directly impacts the industry
Top-Tier Peer Group: Work with a global team of ML engineers, software engineers and industry practitioners
Equity & Scale: Competitive compensation with significant equity upside
**Applications for "Remote work" will not be accepted**