Full Stack Engineer

About Diagonally

Diagonally Ltd builds AI systems, SaaS platforms, and digital products.

We focus on production-ready software that solves real operational problems.

We operate as a distributed team and are building multiple products across SaaS, AI, and mobile.

Role

We are hiring a Full-Stack Engineer to build and scale web-based SaaS systems.

This is a product engineering role. You will work across frontend, backend, and database layers, contributing to real systems used by businesses.

You should be comfortable taking features from idea → implementation → production.

Tech Stack

We use a TypeScript-first stack across the application:

Frontend

• React (Next.js)
• TypeScript
• State management (React Query / Context API)
• REST API integration

Backend

• Node.js (Express or NestJS)
• TypeScript
• RESTful API design
• Authentication (JWT / session-based)

Database

• PostgreSQL
• Schema design and relational modeling
• Query optimization

Infrastructure & Tooling

• Git (GitHub)
• API integration (third-party services)
• Basic understanding of deployment environments
• Environment/config management

Responsibilities

• Build and maintain full-stack web applications
• Develop APIs and backend services
• Design and implement database schemas
• Implement authentication and user management
• Integrate third-party services and external APIs
• Write clean, maintainable, and testable code
• Contribute to system design and performance improvements

Requirements

• 2–4 years of experience building real applications
• Strong proficiency in JavaScript / TypeScript
• Solid experience with React (Next.js preferred)
• Experience building backend services with Node.js
• Strong understanding of REST APIs
• Experience with PostgreSQL or similar relational databases
• Ability to design clean data models and application structure

Preferred

• Experience working on SaaS products
• Experience with API integrations and external services
• Familiarity with cloud deployment
• Experience with React Native or mobile development

What We Look For

• You have built and shipped projects (not just tutorials)
• You can explain your technical decisions clearly
• You understand how systems fit together (frontend ↔ backend ↔ database)
• You take ownership and follow through

We value ability and execution over credentials.

Application

Apply via LinkedIn and include:

• GitHub or project links
• Brief description of what you’ve built

<