AI Full Stack Engineer

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!

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