Senior Softwar Engineer Integrations (Sydney)

Humanitix; Sydney; Hybrid; AUD 140,000 - 170,000; Full time

Job summary

Humanitix is hiring a Senior Software Engineer, Integrations in Sydney to shape how our platform connects with external systems. You will extend and harden the public API so hosts, developers and partners can build on our platform, and grow MCP integrations enabling AI agents to interact with Humanitix data.

You will work with partners like Google and HubSpot, designing secure patterns and thorough documentation.

Qualifications

• Experience designing or consuming APIs at scale.
• Excellent documentation and testing discipline.
• Strong understanding of secure, scalable application design.
• Experience integrating with third-party platforms/partners.
• Curiosity and eagerness to learn.

Responsibilities

• Extend and harden the public API to enable external hosts, developers and partners to build on Humanitix.
• Build and maintain MCP integrations for AI assistants and agents to interact with Humanitix data.
• Grow integrations with external partners such as Google and HubSpot, covering listings, sync, payments, and reconciliation.
• Design integration patterns that are secure, well-documented and easy for internal and external teams to adopt.
• Own problems end-to-end from API design and data sync through monitoring, error handling and partner support.

Skills

APIs at scale

Documentation

Testing

Security principles

Communication

Job description

Senior Software Engineer Integrations (Sydney)

Location

Sydney, Australia

Schedule

Full time

Join the Team That’s Changing Ticketing for Good

At Humanitix, we’re flipping the script on ticketing. Instead of lining the pockets of profit-driven platforms, we turn booking fees into funding for education, healthcare, and a better world — over $20.7M raised so far. We’re a social enterprise powered by purpose, and the belief that businesses can put humanity and the planet first.

We’re also a startup with a big heart. Our team culture is built on kindness, empathy, and connection, where you’re free to be yourself and do your best work — surrounded by people who care.

The Role: Senior Software Engineer, Integrations

We're growing our Integrations team and looking for a senior engineer who wants to shape how Humanitix connects to the outside world. This role sits at the centre of two big pushes: making our platform genuinely useful to AI systems and agents, and deepening our connections with external partners

You'll work on:

Extending and hardening our public API so hosts, developers, and third parties can build on top of Humanitix reliably.

Building and maintaining MCP (Model Context Protocol) integrations, enabling AI assistants and agents to interact with Humanitix data and workflows.

Growing our footprint with external partners such as Google, HubSpot, and reseller/distribution platforms (e.g. Viator/TripAdvisor via OCTO) — covering listings, sync, payments, and reconciliation.

Designing integration patterns that are secure, well-documented, and easy for both internal teams and external partners to adopt.

Owning problems end-to-end: from API design and data sync through to monitoring, error handling, and partner support.

Requirements

Be ethically aligned and genuinely inspired by our mission.

A good sense of humour and warm heart - your colleagues are awesome human beings who bring their personality into the office.

A great work ethic and the confidence to escal problems and ask your colleagues for help.

Experience designing or consuming APIs at scale, and an interest in emerging standards like MCP and AI-agent tooling.

Experience integrating with third-party platforms/partners (payments, auth, data sync, webhooks).

Expert in documentation and testing — integration work lives or dies on clear contracts.

Understanding of design principles behind a scalable, secure application.

A curiosity and a thirst for learning.

A keen eye for design and the desire to add the extra 1% that make good integrations great.

Why You’ll Love It Here

You will have JOINT OWNERSHIP to contribute and change the customer experience process & be responsible for its success

We do not micromanage anyone, you are trusted, have full autonomy and are treated as an adult

We use the absolute BEST software, tools & equipment to do our job.

We ONLY hire other smart, ambitious people who LOVE to learn and grow

As a leading team member your input will be absolutely CRITICAL to the success of the company in all areas – including design, marketing and product.

Our Values

Show up

We go all-in for our customers and for each other because we care about what we do. It's okay to be yourself, be vulnerable and say 'I love you'. Try it.

Be bold

Think for yourself, say what you believe and have the curiosity and courage to lead us further forward into new territory. Let's go.

The world is not f*cked

Yep, it can be a lot better, but there's no future in giving up. We create a better world by choosing positivity, investing in humanity and forging pathways to progress. Be humane.

Keep it weird

We celebrate humanity, thrive on individuality, and love all the ways we are different. Bring your true self to work and be inclusive, open and transparent.

This is our second home

The truth is we spend more of our time awake at work than anywhere else in life. We believe a truly enjoyable workplace is critical to a life well-lived.