Job description

About Alumly Pty Ltd

Alumly Pty Ltd (trading as Alumable) is a venture-backed early-stage Australian software company building the country's first "Earn While You Learn" micro-internship platform, connecting tertiary students with paid professional gigs. We run a Laravel/MySQL platform and native iOS and Android apps, we move money between host companies and student workers, and we build product features on Anthropic's Claude models.

The role

We are seeking a senior Full Stack Developer to own Alumly's platform end-to-end — backend, mobile and AI features. This is a hands-on individual-contributor role in a small team, with limited supervision and tight delivery commitments.

Two things make this role unusual, and both are hard requirements. First, a substantial part of our engineering is transactional and financial systems work — payments, payouts and reconciliation that must be correct, auditable and secure. Second, this is an AI-first engineering team: we build customer-facing features on Claude and we work natively inside agentic coding tooling. We are not looking for someone who has used ChatGPT — we need a developer who has shipped and maintained LLM-backed features in production.

Key responsibilities

Design, build and operate Alumly's payment, payout, billing and reconciliation systems in PHP (Laravel), including third-party payment provider integrations Ensure secure handling of sensitive financial and personal data — encryption at rest and in transit, access control, defensible audit trails Design, implement and optimise MySQL schemas and complex queries for performance at scale Design and maintain a microservices architecture, applying Domain Driven Design and modular boundaries Implement asynchronous processing with message queues (RabbitMQ) and caching (Redis) for throughput and fault tolerance under load Develop and maintain Alumly's iOS and Android applications in React Native, and own the full release cycle through App Store Connect and Google Play — build provisioning, certificates, TestFlight distribution and store policy compliance Design, build and ship customer-facing AI features on Anthropic Claude models — system prompt and context design, tool use, structured outputs and streaming Integrate LLM capability into the Laravel backend and the React Native apps, including fallback handling and token-cost control Build internal admin and operations interfaces in React Design and integrate RESTful APIs across web and mobile clients Maintain high automated test coverage using PHPUnit, and participate in code review — including review discipline for AI-generated code Act as production owner: monitoring, incident response, diagnosis and resolution of live issues Build automated reporting for finance and regulatory/tax obligations Skills and experience required (essential)

Core engineering

At least 5 years of relevant work experience in commercial backend or full stack software development Expert-level PHP, with production experience in Laravel and/or Symfony on modern PHP (8.x) Demonstrated commercial experience building payment, billing, payout or comparable financial transaction systems — applications without this will not be progressed Demonstrated experience operating high-load / high-availability production systems and diagnosing performance problems under real traffic Demonstrated experience designing microservices architectures, including decomposition from a monolith, applying Domain Driven Design or equivalent Hands-on production experience with message brokers (RabbitMQ or equivalent) and caching (Redis or equivalent) Strong MySQL and/or PostgreSQL schema design and query optimisation Demonstrated experience implementing secure handling of payment or other sensitive personal data (encryption, tokenisation, PCI-aware practice) Commercial experience in ReactJS Rigorous automated testing practice including PHPUnit and demonstrably high code coverage Proficiency with Git and Docker Experience as a production / site-responsible engineer, including on-call or 24/7 support responsibility Demonstrated delivery in an Agile environment against tight commitments with minimal supervision Mobile

Demonstrated commercial experience building and maintaining production mobile applications in React Native Demonstrated experience releasing and maintaining apps on both the Apple App Store and Google Play, including provisioning, certificates, TestFlight and store policy compliance AI engineering

Demonstrated production experience building on Anthropic Claude models — features shipped to real users and maintained in production, not prototypes or personal projects Practical working knowledge of system prompt and context design, tool use / function calling, and structured outputs Experience integrating LLM capability into a production backend and mobile client, including fallback handling and token-cost control Demonstrated fluency with agentic AI development tooling (e.g. Claude Code, Cursor) as daily working practice, including review discipline for AI-generated code Ability to articulate the failure modes of LLM-backed features — hallucination, prompt injection, non-determinism — and the engineering controls used to manage them Other

Full, unrestricted and ongoing Australian work rights, and currently based in Melbourne Skills and experience desirable Integrating third-party payment providers (PayPal, Stripe or equivalent) at scale Antifraud, risk or compliance systems Automated regulatory or tax reporting Native iOS (Swift) or Android (Kotlin) development AWS Bedrock, model guardrails and cost governance Multi-step agent orchestration or MCP-based tool integrations AWS cloud environments and CI/CD pipelines Planning work and allocating tasks across a small engineering team Python Remuneration

Competitive annual salary plus superannuation, commensurate with experience.

How to apply

Applications must be submitted by email to with the subject line "Full Stack Developer — Melbourne", and must include all of the following:

Your CV A cover letter of no more than one page addressing, specifically, your commercial experience in PHP payment or payout systems, React Native, and shipping production LLM features Links to at least two live applications you have personally built and shipped to the App Store and/or Google Play, describing your specific contribution to each A short written response (max 300 words) to: "Describe a payment, payout or billing system you built or operated in production. Cover transaction volumes, how you guaranteed correctness and idempotency, how you handled third-party provider failures, and how sensitive data was protected." A short written response (max 300 words) to: "Describe an AI feature you built on Claude (or a comparable LLM) and shipped to production users. Cover the model and API, how you handled tool use or retrieval, and what you did about cost and latency. Name a specific failure mode you hit in production and the control you implemented to fix it." Applications that do not include all five items will not be considered. Only shortlisted candidates will be contacted.

No agencies, please.

Pay: From $110,000.00 per year

Work Location: In person