Senior Full Stack Developer - SaaS & AI - with vibe coding experience Semcom Visual Communication - Sydney CBD NSW

Sydney | Contract / Full-Time | 3-12 Months

We are looking for an experienced

Senior Full Stack / SaaS Developer

to help further develop, scale and secure an advanced proprietary business platform.

Candidates should be experienced in building, improving and developing internal, client‑facing and supplier‑facing workflow management, procurement, reporting, logistics and business automation software and be experienced with working with vibe coding tools as well as traditional coding.

What You'll Do

Build and develop new systems as required by the business teams

Review and improve the existing application architecture

Strengthen security, authentication, MFA and permissions

Review multi-tenant data separation and Row Level Security

Secure database, file storage, APIs and backend functions

Build and maintain third-party integrations

Improve performance, scalability and maintainability

Refactor and develop frontend/backend functionality

Introduce automated and security testing

Provide ongoing technical guidance

Skills We're Looking For Strong experience with:

React / TypeScript / JavaScript

Node.js

PostgreSQL / SQL

Supabase or similar backend platforms

REST APIs / Webhooks

Multi-tenant SaaS architecture

Authentication and role‑based permissions

Application security

Git / GitHub





AI-Assisted Development Experience Experience with modern AI-assisted development tools such as

Lovable, Cursor, Replit, Bolt or similar platforms

is highly desirable.

However, we are not looking for someone whose experience is limited to prompting AI tools.

You should be comfortable:

Reviewing AI-generated code

Working directly in an existing codebase

Debugging independently

Writing custom application logic

Writing SQL

Creating secure database policies

Building backend functions

Integrating external APIs

Refactoring code where required

Reviewing application security independently

We are looking for someone who can combine the speed of modern AI-assisted development with proper software engineering discipline.

Engagement Initial engagement is expected to be approximately

3-6 months , with the potential for an ongoing relationship.

Sydney‑based candidates are preferred, as we would require you to work initially from our offices in Pyrmont to understand the needs and requirements of the business, followed by a hyrid working model thereafter. Strong remote candidates within Australia may also be considered.

About You You are a senior, hands‑on developer who can work independently, understand business workflows quickly and combine modern AI-assisted development with robust software engineering discipline.

We are ideally looking for an experienced individual developer or consultant rather than a large agency.

You can find out more about our business at www.sem.com.au

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📌 Senior Full Stack Developer – SaaS & AI - with vibe coding experience (Sydney)
🏢 Semcom Visual Communication
📍 Sydney