AI Full Stack Engineer

About the client

Our client is a CFO-grade vendor spend intelligence platform for 50-200 person companies. They help finance and operations leaders see their total vendor spend, manage contracts, track renewals, and capture savings — across software and services, not just SaaS. Our client is an Australian pre-seed startup with two second-time founders, a live product, paying customers in onboarding, and a SAFE round in market. We've built the product so far using AI-assisted development (Claude Code, Replit Agent).

About Teamified

Teamified is a talent partner helping companies build exceptional remote teams across IT, software, product, and digital innovation. We collaborate with leading enterprises and fast-scaling tech businesses worldwide to help them access world class talent and accelerate growth. With operations across the globe our mission is to make building high performing global teams simple, fast, and cost-effective. Teamified has hundreds of clients with more than 200 engineers, testers, product managers, designers, and technology experts delivering impactful solutions every day.

Job Summary:

This is a real first-engineer role, not a "join an existing team" role. You will own the codebase, set the engineering bar, and lead delivery of the next 12 months of roadmap.

Responsibilities:

Foundations (first 30–60 days)

• Audit and reset our deploy workflow and CI/CD pipeline
• Stand up a proper staging environment
• Document the stack and architectural decisions
• Establish end-to-end testing as a discipline

Integrations (months 2–6)

• Build additional data ingestion connectors beyond Xero (accounting platforms, identity providers, HR/payroll systems)
• Design and build vendor utilisation integrations
• Build a notifications system covering onboarding, alerts, and insight delivery
• Design and build the master vendor catalogue at scale

AI agents (months 3–9)

• Extend LLM-based vendor identification and classification work
• Build evaluation infrastructure for agent reliability
• Productionise the agent task model (per-task pricing)

Productisation (months 6–12)

• Build Tier 2 functionality: utilisation analytics, consolidation recommendations, renewal automation
• Integrate Stripe billing and tier paywalling
• Help shape the hiring of engineer #2

Requirements

Stack

• Next.js 14 (App Router), TypeScript, React 18
• PostgreSQL via node-postgres, hosted on AWS RDS
• Auth0 for multi-tenant authentication
• AWS ECS Fargate (Sydney region), CloudWatch, SSM, OIDC-based IAM
• GitHub Actions for CI/CD
• Tailwind CSS, Radix UI (design system inspired by Stripe, Linear, Notion)
• Anthropic API (Claude) for LLM features
• SendGrid for transactional email
• Claude Code and Replit Agent for AI-assisted development

Must-have experience

• 1–5 years shipping production web applications
• Production Next.js with App Router (not just Pages Router)
• Strong PostgreSQL experience: migrations, indexing, transactions, raw SQL when needed
• Production AWS experience: ECS or equivalent, RDS, IAM, secrets management
• REST API design, OAuth, webhooks, idempotent operations
• Multi-tenant SaaS architecture and related tenancy issues
• Strong written English (async work with founders in a different timezone)
• Comfortable with AI-assisted dev tools (Claude Code, Cursor, or equivalent)

Strongly preferred

• Has shipped LLM-integrated features in production (prompt design, evals, cost management)
• Stripe billing integration experience (subscriptions, metered billing, paywalls)
• Early-stage startup experience (previously 2nd or 3rd engineer in a startup)
• Has owned production on-call

How we currently work (open to changes / improvement)

• Slack is the main communication tool
• Async-first, written-first; decisions are documented, not just outcomes
• Two long-lived working branches (one per founder), PR to main, auto-deploy to AWS ECS in ~5 minutes
• Heavy use of AI dev tools; focus is on judgement, decomposition, and quality rather than typing speed
• Direct, analytical communication; pushback is expected both ways
• No standups, no Jira; work is driven by briefs and PRDs in markdown

Benefits

• Flexibility in work hours and location, with a focus on managing energy rather than time.
• Access to online learning platforms and a budget for professional development
• A collaborative, no-silos environment, encouraging learning and growth across teams
• A dynamic social culture with team lunches, social events, and opportunities for creative input
• Health insurance
• Leave Benefits
• 13th Month Salary

If you possess the required skills and are eager to contribute to our team's success, we encourage you to apply for this exciting opportunity. Apply now!

#GrowWithTeamified #TeamifyYourCareer